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1
D'Argenzio, Domenic. "Inspection and repair of underwater concrete structures." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69790.
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The service life of any concrete marine structure is influenced by the physical condition of both the above water and below water portions of structure. This requires implementing an adequate inspection, maintenance, and repair program for the entire structure. To develop an effective maintenance and repair program for the submerged portion of the structure, the causes and extent of concrete distress or deterioration must be clearly understood. This requires a selective underwater condition survey, using a range of in-situ and laboratory testing and inspection techniques, to obtain the necessary information to assess the condition of the submerged portion of the structure. The cause and extent of deterioration, site logistics, and the clients needs will dictate the methods of inspection and repair. Recent developments in concrete admixtures has made it possible to place higher quality concrete suitable for underwater repairs. This thesis provides a summary of the most common forms of concrete distress found in a marine environment, along with a state-of-the-art review of existing and recently developed underwater inspection and repair techniques.In addition, four case studies are presented to illustrate the application of the above knowledge. The first case study describes the special aspects of underwater repairs to a concrete storm surge barrier damaged during construction. The second case study summarizes the procedures used for repairing a cracked concrete gravity dam by polyurethane resin injection methods. The third case study presents the various procedures used for repairing concrete railway bridge piers in a marine environment which were damaged by severe alkali-aggregate reaction. The final case study describes underwater repair procedures and concrete investigation techniques used in repairing the piers of a highway bridge.
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Ahamdi, Hossein. "Concrete Bridge Deck Aging, Inspection and Maintenance." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1513292224089599.
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Powers, Mark. "Effectiveness of the concrete reinforcing placement inspection process." [Gainesville, Fla.] : University of Florida, 2002. http://purl.fcla.edu/fcla/etd/UFE0000592.
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Nsabimana, Placide. "A method for prioritisation of concrete bridge inspections in South Africa." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96770.
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Thesis (MEng)--Stellenbosch University, 2015.ENGLISH ABSTRACT: Bridges are amongst the most important structures of any highway network. Once the bridge construction is complete and a bridge is put into service, it is subjected to deteriorations. An effective condition assessment, as a component of bridge management system, is therefore necessary to keep bridges in admissible conditions of safety and serviceability. In South Africa, some bridge authorities do not have sufficient funds to carry out bridge inspections at required intervals. In the case where bridge authorities have enough funds, a systematic inspection is performed, covering a number of bridges that are not in need of inspection. Inspection and maintenance for a limited number of bridges randomly chosen may result in an increase of the number of bridges in critical conditions. A bridge inspection prioritisation method that takes into account the need of inspection of bridges is therefore needed for South African highway bridges. This research provides a prioritisation method for concrete bridge inspections by integration of nonprofessional inspectors, imagery inspection and deterioration models. To achieve the research objectives of this study, a literature study has been carried out to understand bridge inspection practice in general and South African practice in particular. The literature helped also to identify previous works on bridge inspection prioritisation, the use of information from informal sources, imagery inspection and involvement of non-professionals in bridge inspection and use of deterioration models in bridge management. A survey has been conducted amongst South African bridge authorities in order to fill the literature gaps. Inventory and inspection data of bridges managed by South African National Roads Agency Limited (SANRAL) was used to develop a deterioration model by considering bridge characteristics such as bridge age, number of spans, and bridge type. Based on the literature review, results of surveys and estimated regression parameters, a bridge inspection prioritisation method has been developed. This method comprises three phases. The first phase is the initial screening that consists of an identification of bridges with critical defects that have not been repaired yet. These bridges, to which are added bridges that have not been inspected in the previous inspection, constitute the first inspection priority category. The second phase is an imagery screening which is an analysis of digital photographs for detection of defects that need urgent assessment by professional inspectors. The analysed photographs are taken by non-professional inspectors and uploaded to the Bridge Management System. The third phase is a grouping of bridges in inspection priority categories as a function of their physical characteristics and deteriorating factors using deterioration modelling. The method has been applied on SANRAL bridges using inspection ratings of 2011-2012. 422 SANRAL bridges have been categorised in the first inspection priority group by considering hydraulic related defects as critical. The third phase allowed to rank 522 possible combinations of bridges based on their characteristics. The developed method would help bridge authorities where inspection budget is limited, to prioritise bridge inspection as a function of needs of inspection.
AFRIKAANSE OPSOMMING: Brûe is ʼn belangrike deel van enige snelweg netwerk. Wanneer brugkonstruksie voltooi is en dit in diens gestel word, is die brug onderhewig aan skade en verval . 'n Doeltreffende toestandsassessering, as 'n komponent van ʼn brug bestuurstelsel, is dus nodig om brûe in ʼn toestand van veiligheid en diensbaarheid te hou. In Suid-Afrika het sommige brugowerhede nie genoeg fondse om bruginspeksies teen vereiste intervalle uit te voer nie. In die geval waar ʼn brugowerhede wel genoeg fondse het, word stelselmatige reekse inspeksies uitgevoer, waar brûe wat nie lukraaknoodwendig op daardie stadium inspeksie nodig het nie, ook soms ingesluit word. Inspeksie en onderhoud vir slegs 'n beperkte aantal brûe wat gekies word kan 'n toename veroorsaak in die aantal brûe wat in ʼn kritiese toestand is. 'n Bruginspeksie prioritiseringmetode wat brûe identifiseer vir inspeksie is dus nodig vir Suid-Afrikaanse brugowerhede. Hierdie navorsing stel 'n metode voor wat bruginspeksies prioritiseer deur gebruik te maak van nieprofessionele inspekteurs, inspeksie van foto’s en brugtoestandsvervalmodelle. Om die navorsings doelwitte van hierdie projek te bereik, is 'n literatuurstudie uitgevoer oor die praktyk van bruginspeksie in die algemeen, en meer spesifiek om die praktyk in Suid-Afrika te verstaan.. 'n Opname is voorts onder Suid-Afrikaanse brugowerhede uitgevoer om gapings in die literatuur aan te vul. Inventaris en inspeksie data van brûe wat bestuur word deur die Nasionale Padagentskap (SANRAL) is daarna gebruik om 'n toestand agteruitgangsmodel te ontwikkel deur die eienskappe soos brug ouderdom, aantal spanne en die tipe brug in ag te neem Gebaseer op die literatuur, resultate van opnames en beraamde regressie parameters is 'n brug inspeksie prioritiseringsmetode ontwikkel. Hierdie metode bestaan uit drie fases. Die eerste fase is die aanvanklike siftingsproses wat bestaan uit die identifisering van brûe met 'n kritiese defek wat nog nie herstel is sedert ʼn vorige inspeksie nie. Hierdie brûe, wat ingesluit word by ander brûe wat nie geïnspekteer was in die vorige inspeksie nie, is die eerste kategorie van inspeksie prioriteit. Die tweede fase is 'n ontleding van digitale foto's vir die opsporing van defekte wat dringende assessering deur professionele inspekteurs nodig het. Die foto's word geneem deur nie-professionele inspekteurs en dit word gelaai op die brug bestuurstelsel. Die derde fase is die groepering van brûe in inspeksie prioriteit kategorieë as 'n funksie van hul fisiese eienskappe en vervalfaktore met die hulp van agteruitgangsmodelle. Die metode is toegepas op die SANRAL brûe met die hulp van inspeksie graderings van 2011-2012. Deur die aanname van hidrouliese defekte as van kritiese belang, is 422 SANRAL brûe in die eerste inspeksie prioriteit gegroepeer. Die derde fase prioritiseer 522 moontlike kombinasies van brûe op grond van hul fisiese eienskappe. Die metode sal brugowerhede waar inspeksie begrotings beperk is, help om bruginspeksies te prioritiseer as 'n funksie van die noodsaaklikheid van inspeksie.
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Long, Robert. "Improvement of ultrasonic apparatus for the routine inspection of concrete." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343846.
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Larsen, Jacob Lynn. "Automated Impact Response Sounding for Accelerated Concrete Bridge Deck Inspection." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6989.
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Infrastructure deterioration is an international problem requiring significant attention. One particular manifestation of this deterioration is the occurrence of sub-surface cracking (delaminations) in reinforced concrete bridge decks. Of many techniques available for inspection, air-coupled impact-echo testing, or sounding, is a non-destructive evaluation technique to determine the presence and location of delaminations based upon the acoustic response of a bridge deck when struck by an impactor. In this work, two automated air-coupled impact echo sounding devices were designed and constructed. Each device included fast and repeatable impactors, moving platforms for traveling across a bridge deck, microphones for air-coupled sensing, distance measurement instruments for keeping track of impact locations, and signal processing modules. First, a single-channel automated sounding device was constructed, followed by a multi channel system that was designed and built from the findings of the single-channel apparatus. The multi channel device performed a delamination inspection in the same manner as the single-channel device but could complete an inspection of an entire traffic lane in one pass. Each device was tested on at least one concrete bridge deck and the delamination maps produced by the devices were compared with maps generated from a traditional chain-drag sounding inspection. The comparison between the two inspection approaches yielded high correlations for bridge deck delamination percentages. Testing with the two devices was more than seven and thirty times faster, respectively, than typical manual sounding procedures. This work demonstrates a technological advance in which sounding can be performed in a manner that makes complete bridge deck scanning for delaminations rapid, safe, and practical.
7
Brown, Jeff Robert. "Infrared thermography inspection of fiber-reinforced polymer composites bonded to concrete." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0011621.
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Morton, Keith J. "Development of an electromagnetic inspection technique for lined-cylinder concrete pressure pipe." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0029/MQ65640.pdf.
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Miller, Tri Huu. "NONDESTRUCTIVE INSPECTION OF CORROSION AND DELAMINATION AT THE CONCRETE-STEEL REINFORCEMENT INTERFACE." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194077.
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The proposed study explores the feasibility of detecting and quantifying corrosion and delamination (physical separation) at the interface between reinforcing steel bars and concrete using ultrasonic guided waves. The problem of corrosion of the reinforcing steel in structures has increased significantly in recent years. The emergence of this type of concrete deterioration, which was first observed in marine structures and chemical manufacturing plants, coincided with the increased applications of deicing salts (sodium and calcium chlorides) to roads and bridges during winter months in those states where ice and snow are of major concern. Concrete is strengthened by the inclusion of the reinforcement steel such as deformed or corrugated steel bars. Bonding between the two materials plays a vital role in maximizing performance capacity of the structural members. Durability of the structure is of concern when it is exposed to aggressive environments. Corrosion of reinforcing steel has led to premature deterioration of many concrete members before their design life is attained. It is therefore, important to be able to detect and measure the level of corrosion in reinforcing steel or delamination at the interface. The development and implementation of damage detection strategies, and the continuous health assessment of concrete structures then become a matter of utmost importance. The ultimate goal of this research is to develop a nondestructive testing technique to quantify the amount of corrosion in the reinforcing steel. The guided mechanical wave approach has been explored towards the development of such methodology. The use of an embedded ultrasonic network for monitoring corrosion in real structures is feasible due to its simplicity. The ultrasonic waves, specifically cylindrical guided waves can propagate a long distance along the reinforcing steel bars and are found to be sensitive to the interface conditions between steel bars and concrete. Ultrasonic transducers are used to launch and detect cylindrical guided waves along the steel bar.In this dissertation, in-situ corrosion monitoring technique for reinforced concrete is developed based on two methods - 1) variation of signal strength and 2) the time-of-flight (TOF) variations as the corroded member is loaded transversely. This is the first attempt ever to monitor corrosion inside concrete by measuring the change in the time of flight of guided waves along reinforcing bars as the concrete beam is subjected to bending. Advantages of corrosion monitoring by TOF change are discussed in the dissertation.
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Damaj, Walid Taha. "Ultrasonic inspection of concrete structures to detect the condition of embedded steel components." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332656.
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Staron, Daniel Lee. "Concrete deterioration inspection system for extending the operating life of nuclear power plants." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/45197.
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This study has evaluated the degradation processes which will potentially affect the reinforced concrete structures of a nuclear power generation facility during and beyond its original design life. This task was undertaken in consideration of the feasibility of extending the life of nuclear power plants beyond their current license expiration dates. Following the identification of deterioration mechanisms which are expected to occur, an inspection system was developed to correctly assess and document the condition of the reinforced concrete components during their service life.
Twenty-eight out of thirty-nine possible degradation modes are deemed likely to affect Surry’s reinforced concrete structures. The majority of these modes are visually evident in their incipient stages. Currently available nondestructive testing methods were assessed to determine their applicability to detect modes which are not visually evident or to determine the extent of deterioration due to other modes. It was found that many nondestructive testing methods are currently lacking in reliability, portability, or ease of application. Consequently, the developed inspection program is based primarily on visual inspections performed by qualified inspectors. This report was prepared under the authority of Virginia Power Company in conjunction with the Surry Unit One life extension study.
It is the conclusion of this report that reinforced concrete degradation will in no way impair the usefulness or safety of the concrete structures of a nuclear facility during the 40 year design life provided actions are taken to implement a concrete inspection program similar to that which is described within. This program will allow the detection of potentially critical situations thereby directing the maintenance and repair activities necessary to insure the feasibility of extended life.Master of Science
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AL, Tarawneh Bashar K. "Inspection, durability, and risk assessment of highway culverts." Ohio University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1177613239.
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White, Ellen T. "Development of an Index for Concrete Bridge Deck Management in Utah." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1453.pdf.
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Hammarström, Elias. "Non-Destructive testing of concrete with ground penetrating radar." Thesis, Luleå tekniska universitet, Byggkonstruktion och brand, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72621.
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Concrete structures are susceptible to deterioration over time and it is vital to continually assess concrete structures to maintain the structural integrity and prolong the service life. In recent years there has been an increased interest in non-destructive testing of concrete, i.e. assessing the state of the concrete without causing any damage to the structure in the process. There are many different techniques that falls under the term non-destructive testing and one of these that have gained prominence during the last few years is Georadar or ground penetrating radar, often shortened as GPR. GPR is a technique where microwaves are sent into the surface of the concrete by a device, the waves will reflect back to the device when encountering interfaces of areas with different electric properties. The waves are then received by the same device indicating the internal structure of the concrete. This makes the technique an excellent way to find reinforcement bars as the electric properties of concrete and metal strongly differ. In theory though, the technique should also be able to detect other internal differences in concrete, such as voids and corrosion areas but further research is still needed in these areas. This aim of this report is to evaluate ground penetrating radar as a non-destructive technique for assessment of concrete structures. In order to do this different tests has been conducted to evaluate the general performance and usability with a literature review introducing the science behind and what conclusions other researches has reached and using a testing methodology to reach the results. The tests can in a simple way be divided into two parts, first lab tests on a slab in a controlled setting where the internal structure was known, and then two shorter field trips in order to evaluate the performance properly insitu. The results were, to some extent, ambiguous. Although it was found that GPR is an excellent method for finding and locating near-surface reinforcement it was also concluded that the results could vary significantly depending on the location. In one of the field trips the performance of the GPR technique was compared to the performance of traditional cover meter and in this case the portability of the cover meter outperformed the somewhat clunky handling of the GPR. The concrete cover measurement using post-processing of the radar data gave a rough estimate, but once again evaluation still relied on the insitu conditions and the estimate were sometimes questionable. Finding reinforcement below the first layer yielded differing results and it was concluded that further tests were needed to fully evaluate the capabilities of the technique in this regard. The conclusions of the thesis was that although the tests show some potential for the method the results expected from GPR would strongly depend on suitability of the project and experience of the user. One important limiting factor was the availability of devices. For the current project only one specific device was used, it was theorized that another GPR device could get better results depending on the purpose. Furthermore, the lack of experience was also considered to be a limiting factor that might have had an effect on the results. For future research more tests on lower reinforcement and tests on detection of deterioration were suggested. Comparative studies with other similar non-destructive techniques were also considered to be an area of possible interest.
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Psiachos, Demetra. "An analytical model for the eddy current inspection of broken prestressing windings in prestressed concrete pressure pipe." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ63355.pdf.
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Nadia, Binti Kamaruddin. "Durability and Seismic Resistance of a 60-Year Old Precast Prestressed Concrete Building Based on Field Inspections and Laboratory Testings." Kyoto University, 2018. http://hdl.handle.net/2433/235085.
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Huethwohl, Philipp Karl. "Bridge damage detection and BIM mapping." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/285562.
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Bridges are a vitally important part of modern infrastructure. Their condition needs to be monitored on a continuous basis in order to ensure their safety and functionality. Teams of engineers visually inspect more than half a million bridges per year in the US and the EU. There is clear evidence to suggest that they are not able to meet all bridge inspection guideline requirements. In addition, the format and storage of inspection reports varies considerably across authorities because of the lack of standardisation. The availability of a comprehensive and open digital representation of the data involved in and required for bridge inspection is an indispensable necessity for exploiting the full potential of modern digital technologies like big data exploration, artificial intelligence and database technologies. A thorough understanding of bridge inspection information requirements for reinforced concrete bridges is needed as basis for overcoming the stated problem. This work starts with a bridge inspection guideline analysis, from which an information model and a candidate binding to Industry Foundation Classes (IFC) is developed. The resulting bridge model can fully store inspection information in a standardised way which makes it easily shareable and comparable between users and standards. Then, two inspection stages for locating and classifying visual concrete defects are devised, implemented and benchmarked to support the bridge inspection process: In a first stage, healthy concrete surfaces are located and disregarded for further inspection. In a second hierarchical classification stage, each of the remaining potentially unhealthy surface areas is classified into a specific defect type in accordance with bridge inspection guidelines. The first stage achieves a search space reduction for a subsequent defect type classification of over 90% with a risk of missing a defect patch of less than 10%. The second stage identifies the correct defect type to a potentially unhealthy surface area with a probability of 85%. A prototypical implementation serves as a proof of concept. This work closes the gap between requirements arising from established inspection guidelines, the demand for holistic data models which has recently become known as "digital twin", and methods for automatically identifying and measuring specific defect classes on small scale images. It is of great significance for bridge inspectors, bridge owners and authorities as they now have more suitable data models at hand to store, view and manage maintenance information on bridges including defect location and defect types which are being retrieved automatically. With these developments, a foundation is available for a complete revision of bridge inspection processes on a modern, digital basis.
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Carmo, Marco Antônio do. "Estudo da deterioração de marquises de concreto armado nas cidades de Uberlândia e Bambuí." Universidade Federal de Uberlândia, 2009. https://repositorio.ufu.br/handle/123456789/14131.
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In recent years the number of the constructed concrete marquees with pathological
manifestations has grow in Brazil, and consequences have caused them to be structurally
weak, which has generally lead to fatalities. As preventive action, it becomes necessary
that the projects and construction thereof be improved in quality, that found pathological
causes be corrected to prevent the repetition of the same errors, making sure that there is
always a feedback of the system and all necessary maintenance is provided. By project
analysis of geometric characteristics of the structure, visual inspection and detailed
inspection with appropriate equipments, it can be detected existed anomalies and to made
repairs and reinforcement of the structure, or even to indicate it demolition. This work
represents the results obtained with the methodological implementation of the use of
techniques inspection, norms and regulations that deal with constructed concrete skyways,
with concern to guarantee their durability and, consequently, enhanced security for
pedestrians. The studies had been carried through in the cities of Bambuí and Uberlândia.
In the city of Uberlândia visual inspections of 54 marquees had been made, whereas in the
city of Bambuí it became fulfilled visual inspection and inspection detailed in 10 of these
structures, being used equipment of rebar locator, ultrasonic testing, measurer of corrosion
potential of reinforcing bars and resistivity meter.Nos últimos anos tem crescido no Brasil, o número de marquises de concreto armado com manifestações patológicas, e conseqüente acidente estrutural, o que tem levado geralmente a vítimas fatais. Para se prevenir destes, faz-se necessário que se projete e construa com qualidade, que se conheçam as causas das patologias encontradas, evitando a repetição dos mesmos erros, fazendo com que haja sempre uma realimentação do sistema e que tenha sempre uma manutenção necessária. Através de análise de projeto, das características geométricas da estrutura, de inspeção visual e inspeção detalhada com equipamentos adequados, poderá detectar-se se existem anomalias e realizar-se operações de recuperação e reforço da estrutura, ou mesmo indicar sua demolição. Este trabalho apresenta os resultados obtidos com a utilização de técnicas de inspeção de marquises de concreto armado, com preocupação de garantir a durabilidade desta, e conseqüentemente maior segurança para pedestres. Os estudos foram realizados nas cidades de Bambuí e Uberlândia. Na cidade de Uberlândia foram feitas inspeções visuais em 54 marquises, enquanto que na cidade de Bambuí realizou-se inspeção visual e inspeção detalhada em 10 destas estruturas, sendo utilizados equipamentos de pacometria, ultra-sonografia, medidor de potencial de corrosão e resistivímetro.
Mestre em Engenharia Civil
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Tuttle, Robert S. "Condition Analysis of Concrete Bridge Decks in Utah." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd853.pdf.
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AVENDAÑO, JUAN CAMILO. "Identification and quantification of concrete cracks using image analysis and machine learning." Thesis, KTH, Bro- och stålbyggnad, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286025.
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Nowadays inspections of civil engineering structures are performed manually at close range to be able to assess damages. This requires specialized equipment that tends to be expensive and to produce closure of the bridge. Furthermore, manual inspections are time-consuming and can often be a source or risk for the inspectors. Moreover, manual inspections are subjective and highly dependent on the state of mind of the inspector which reduces the accuracy of this kind of inspections. Image-based inspections using cameras or unmanned aerial vehicles (UAV) combined with image processing have been used to overcome the challenges of traditional manual inspections. This type of inspection has also been studied with the use of machine learning algorithms to improve the detection of damages, in particular cracks. This master’s thesis presents an approach that combines different aspects of the inspection, from the data acquisition, through the crack detection to the quantification of essential parameters. To do this, both digital cameras and a UAV have been used for data acquisition. A convolutional neural network (CNN) for the identification of cracks is used and subsequently, different quantification methods are explored to determine the width and length of the cracks. The results are compared with control measures to determine the accuracy of the method. The results present low to no false negatives when using the CNN to identify cracks. The quantification of the identified cracks is performed obtaining the highest accuracy estimation for 0.2mm cracks.
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Colorado, Urrea Gabriel J. "Service Life of Concrete and Metal Culverts Located in Ohio Department of Transportation Districts 9 and 10." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1408279810.
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Li, Zequn LI. "Updating Bridge Deck Condition Transition Probabilities as New Inspection Data are Collected: Methodology and Empirical Evaluation." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503093114349283.
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Sahuinco, Melquiades Hermógenes Choquepuma. "Utilização de métodos não destrutivos e semi destrutivos na avaliação de pontes de concreto." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-01112011-123905/.
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As estruturas de concreto, especialmente as pontes de concreto, estão sujeitas a um conjunto de ações que leva ao seu envelhecimento devido aos processos de deterioração, muitas vezes deixando de responder às exigências para as quais foram projetadas. Tal situação, em muitos casos, é agravada pela falta de conhecimento dos processos e mecanismos de degradação assim como o uso de técnicas tradicionais para inspeção de estruturas, estas muitas vezes se mostram limitadas quando são aplicadas isoladamente. Este trabalho mostra uma comparação entre a inspeção visual (usada há décadas) e a aplicação de métodos de ensaios não destrutivos e semi-destrutivos na avaliação da condição estrutural atual de pontes. Enquanto a inspeção visual mostra uma condição qualitativa, os métodos de ensaios não destrutivos são quantitativos e apresentam o potencial de determinar os danos no interior da estrutura que não são visíveis a olho nu. Portanto, visando alertar para o problema da degradação das pontes, busca-se integrar a inspeção visual com a avaliação através do uso de métodos de ensaio. Assim, neste trabalho é feito um estudo de caso da ponte sobre o rio Jaguari. Este estudo visa determinar a condição atual da estrutura através de ensaios não destrutivos e semi-destrutivos, estabelecendo uma correlação entre os resultados destes ensaios e a avaliação da inspeção visual. Dessa forma, procura-se apresentar uma alternativa na avaliação de pontes de concreto.Concrete structures, particularly concrete bridges, are subjected to a set of actions that leads to aging due to the processes of deterioration, and many times these structures do not respond to the demands for which they have been designed. This situation, in many cases, is exacerbated by lack of knowledge of processes and mechanisms of degradation and by the use of traditional techniques for inspection of structures, these techniques are limited when applied alone. This work shows a comparison between the visual inspection (used for decades) and the application of nondestructive testing methods and semi-destructive on the evaluation of current structural condition of bridges. While visual inspection shows a qualitative condition, the methods of nondestructive testing are quantitative and have the potential to determine the damage inside the structure that are not visible with a simple view. Therefore, in order to draw attention to the problem of deterioration of bridges, we seek to integrate the visual inspection with the assessment through the use of test methods. Thus, in this work a case study of the bridge about the river Jaguari is done. This study aims at determining the current condition of the structure through nondestructive and semi-destructive methods, establishing a correlation between the results of these tests and the evaluation of visual inspection. We seek to present an alternative in the assessment of concrete bridges.
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Cortines, Vitor Joachim. "Estudo da inspeção e caracterização de materiais compósitos por ultrassom." Universidade do Estado do Rio de Janeiro, 2014. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7329.
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O presente trabalho foi desenvolvido com o intuito de estudar a utilização do método de ensaio não destrutivo de ultrassom para inspecionar e caracterizar materiais compósitos. Os objetivos principais da pesquisa foram medir a espessura, encontrar e dimensionar delaminações em reparo de material compósito laminado para tubulações e medir a velocidade do som no concreto para o cálculo do módulo de elasticidade. Inicialmente foram estudados os parâmetros físicos relevantes inerentes a cada material para o método de ultrassom, para então estabelecer uma metodologia de inspeção. A técnica de pulso-eco foi capaz de encontrar as descontinuidades no compósito laminado. Para a determinação do módulo de elasticidade do concreto, a técnica de transmissão foi utilizada obtendo-se resultados satisfatórios.This work was developed with the intention of using the non-destructive testing method of ultrasound to inspect and characterize composite materials. The main objectives of the research were to find and size delaminations in laminated composite material for pipeline repair and to measure sound speed in concrete in order to determine its elastic modulus. Initially, the relevant physical parameters inherent to each material were studied regarding ultrasound so to establish a testing methodology. The pulse-eco technique was used to find discontinuities in laminated composite. To determine the elastic modulus of concrete, the through transmission technique was used with satisfactory results.
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Zhu, Zhenhua. "Column recogniton and defects/damage properties retrieval for rapid infrastructure assessment and rehabilitation using machine vision." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44768.
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No matter how inspection techniques have been advanced, manual visual inspection is currently still the first and fundamental step in assessing civil infrastructure. If no sign of deterioration has been spotted in manual inspection, any future inspection actions is not necessary to take. However, manual inspection has been identified with several limitations including the qualitative nature of inspection results, the time-consuming inspection process, and the heavy reliance on inspectors' and/or engineers' experience. In order to overcome these limitations, automated visual inspection systems have been proposed to enhance and/or replicate the manual inspection process. A number of image processing methods have been developed in detecting defects (i.e. coating rusts) and damage (i.e. cracks) on civil infrastructure. Their effectiveness has been verified in inspecting structures, such as bridges, underground pipes, and tunnels.
Although existing methods are effective in finding defects and damage from digital images, missing two important links limits their application for rapid infrastructure assessment and rehabilitation. The first link is the correlation between the defects/damage and the structural members that the defects/damage lie on. The second link is the relationship between the defects/damage and their impacts on the structural members.
The purpose of this research is to investigate the way of establishing these two links. It is focused on the retrieval of critical structural members and defects/damage information from images/videos, and then the utilization of this information for automated and rapid assessment and rehabilitation of civil infrastructure. Specifically, a combination of techniques from the areas of visual pattern recognition, digital filtering, and machine vision have been used in order to develop a set of methods for concrete column recognition, crack properties retrieval, and air pockets and discoloration detection and evaluation. The methods proposed in this research were implemented in a Microsoft Visual Studio environment, and tested on the real images/videos of concrete structures inflicted with cracks, air pockets and discoloration. The test results indicated that the methods could automatically recognize concrete columns, correctly measure the properties of the cracks in a crack map, and accurately evaluate the impacts of air pockets and discoloration on the visual quality of concrete surfaces.
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Pokorný, Jakub. "Stavební průzkum a diagnostika železobetonové konstrukce." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226090.
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The thesis Building Investigation and Diagnosis of Reinforced Concrete Structure is focused on analyzing two reinforced concrete bridge structures. It discusses different evaluation surveys and its influence on later evaluation of the bridges. In this thesis there is included static evaluation finding supports at one of reinforced concrete bridges. Practical part is complemented by the necessary theoretical part, which deals with exploring bridges, ways of their implementation, and a summary of the most commonly used diagnostic methods for bridges.
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Oliveira, José Venâncio Marra. "Análise do comportamento dinâmico de ponte de concreto por meio de filtragem de sinais GPS." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18143/tde-30102018-100423/.
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Esta pesquisa propôs uma contribuição aos procedimentos de inspeção de pontes por meio de um plano de monitoramento de curta duração do comportamento dinâmico do tabuleiro de pontes rodoviárias de concreto com a utilização de receptores GPS de 100 Hz associado à diversas técnicas de filtragem de sinais. O estudo foi conduzido em uma ponte em serviço localizada na rodovia Fernão Dias (BR-381). O procedimento de inspeção proposto baseou-se no uso de dois sinais de satélites GPS, por meio da aplicação do Método Residual de Fase (MRF), e da análise temporal dos resíduos da dupla diferença de fase a partir da Fast Fourier Transform (FFT), Continuous Wavelet Transform (CWT), Passa-Faixa Chebyshev do Tipo I. A descrição do comportamento dinâmico do tabuleiro do vão central da ponte se deu por meio da extração dos valores de frequência e amplitude das deflexões verticais a partir dos dados GPS filtrados (resíduos), em três períodos de amostragem de 1 minuto. Os valores de frequência variaram de 0,5 Hz a 8 Hz nos três períodos de amostragens e também nos filtros FFT, CWT e Passa-Faixa Chebyshev do Tipo I. Os valores de amplitude de deslocamento vertical máximo ficaram em torno de 6 mm. Estes valores coincidiram com os valores de frequência e amplitude de deslocamento vertical registrados pela instrumentação clássica com acelerômetros, transdutores de deslocamento vertical, modelagem por elementos finitos e prova de carga estática e dinâmica realizadas sobre tabuleiro do vão central da ponte instrumentado. Por fim, pode-se afirmar que os procedimentos propostos, além de poderem ser utilizados como uma etapa preliminar de inspeção de tabuleiro de pontes rígidas possibilitaram a detecção de deslocamentos dinâmicos verticais milimétricos e suas frequências de vibração.This research proposed a contribution for bridge inspection procedures at of a short-term monitoring plan of the dynamic behavior of the concrete road bridge with the use of 100 Hz GPS receivers associated with various signal filtering techniques. The study was conducted in the service bridge located on the highway Fernão Dias (BR-381). The procedure inspection proposed was based on the use of two satellite GPS signals, by applying the Phase Residual Method (PRM), and the temporal analysis of the residuals of the double difference phase from the Fast Fourier Transform (FFT), Continuous Wavelet Transform (CWT), Type I Chebyshev Band-Pass. The dynamic behavior of the central span of the bridge was described by extracting the frequency and amplitude values of the vertical deflections from the filtered GPS data (residues), in three sampling periods of 1 minute. The frequency values found ranged from 0.5 Hz to 8 Hz in the three sampling periods as well as in the FFT, CWT and Chebyshev Type I Band-Pass filters. The maximum vertical displacement peak values were around 6 mm. These values coincided with the vertical displacement and amplitude values recorded by the classical instrumentation with accelerometers, vertical displacement transducers, finite element modeling and static and dynamic load test performed on the central span deck of the instrumented bridge. Finally, it could affirm that the procedures proposed, besides being able to be used as a preliminary step of inspection of the rigid bridge\'s deck enabled the detection of millimetric vertical dynamic displacements and their frequencies of vibration.
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Haynes, Mark Davis. "Quality by design: improving pre-stressed reinforcement for concrete railroad ties via geometrical dimensioning and tolerancing." Diss., Kansas State University, 2015. http://hdl.handle.net/2097/20582.
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Doctor of PhilosophyDepartment of Industrial & Manufacturing Systems Engineering
Chih-Hang John Wu
Quality is a result of product design and production control. Product design must maximize the ability to function across variations in production and environment. Production control must monitor and maintain the key design characteristics necessary for the intended function. Failure to do so results in premature part failure and increased costs. This has occurred in the production of modern cross ties. By designing quality into the product and production process, performance is maximized. This research presents a methodology for incorporating quality into the product design and production process. For product design, a relationship between product performance and design parameters is established by modeling techniques. These models provide a means to redesign the product to maximize performance and to understand the sensitivity of the design to fluctuation in production and environment. These models also establish the key design parameters that are critical for sustaining quality. For production, a method of monitoring the key design parameters is presented that provides an affordable means of automated inspection. Automated inspection removes operator error from the inspection process and allows for greater sampling rates to be achieved. The methodology presented allows for a potential of 100% inspection to be achieved with minimal impact to production costs. The research is applied to the analysis and quality control of pre-stressing steel reinforcement for concrete cross-ties. This application provides an opportunity to test and verify the research findings on a real world problem. Novel automated 3D spatial analysis algorithms are presented. This research furthers the state of the art of performing Geometrical Dimensioning and Tolerancing (GD&T). A cost effective method of non-contact surface profiling was developed with high resolution and high density surface profiles. The combined research findings present a methodology of achieving quality by design.
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Oliveira, Jackline de Assis Lopes Santos. "Avaliação de estruturas de edifícios em concreto armado com vistas à reabilitação." Universidade Católica de Pernambuco, 2008. http://www.unicap.br/tede//tde_busca/arquivo.php?codArquivo=433.
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Com o crescente número de ocorrências patológicas encontradas nas estruturas de concreto armado, conforme levantamento de danos realizado por Dal Molin, 1988; Andrade, 1997, cresce também a demanda por serviços de inspeção e manutenção nos condomínios residenciais no Estado de Pernambuco e em todo o País. Entretanto, é possível observar que a prática de inspeções periódicas ainda não faz parte da cultura de uma determinada faixa da população, que não possui meios econômicos, e
conhecimento da importância da manutenção para garantir a integridade da estrutura. Estas inspeções visam detectar danos à estrutura em tempo hábil a minorar os custos de
reparo, aplicando assim uma manutenção preventiva como forma de garantir a vida útil estimada em projeto para a edificação. Foi utilizado neste trabalho um roteiro de inspeção com utilização de ensaios e metodologia de quantificação de danos, para verificar o estado de degradação de três edifícios
residenciais, com mais de vinte anos de construídos e próximos à orla marítima onde a agressividade ambiental é forte. A deterioração encontrada em cada um dos edifícios foi devido à intervenção inadequada realizada em cada prédio. A última intervenção realizada na Edificação A, foi corretiva
executada por mão de obra não qualificada orientada pelo próprio condomínio, que não tem conhecimento técnico na área de engenharia civil. Na edificação B, a situação é semelhante, agravada pela opinião de alguns condôminos de que não há necessidade desta rotina, mesmo a estrutura estando em estado crítico, conforme confirmado com a aplicação da metodologia ora proposta. E para a edificação C, na ocasião da pesquisa, existia uma empresa de engenharia civil executando os serviços de manutenção, porém isto se deve, de forma pontual, a gestão atual do condomínioWith the growing number of serious problems found in the reinforced concrete structures, according to the research on damage done by Dal Molin in 1998 and Andrade 1997, there has been a growing demand for inspections and the maintenance of residential buildings both in Pernambuco and country as a whole. However, it is possible to observe that the practice of periodical inspections is still not part of the culture of a specific section of the population, who don`t have the financial means nor a knowledge of the importance of maintenance as a guarantor of the building`s safety. These inspections aim to detect structural faults in time to minimize repair costs. Preventative maintenance is meant to guarantee the useful life of the building. In this study, there was an inspection schedule using tests and a methodology to measure damage, to check the state of direpair of three residential buildings, all more than 20 years old, all on the coast where the environmental effects are strong. The deterioration found in each of these buildings was due to inadequate preventative measures. The last action taken in Building A was undertaken by unqualified labourers directed by the condominium with no technical knowledge in the area of the civil engineering. In Building B, the situation is similar, worsened by the opinion of several residents who think that there in no need for this kind of inspection. And this even though the building is in a critical state according to the research done. As for Building C, at the time of our research, there was a civil engineering firm performing maintenance services, though this is due to last minute action taken by the present management of the building
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Woods, Jennifer. "SPECIFICATION RECOMMENDATION FOR USE OF HIGH PERFORMANCE REPAIR MATERIAL." Cleveland State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=csu1483707411173028.
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Garláthy, Michal. "Vybrané části stavebně technologického projektu fotbalové tribuny Androva stadionu v Olomouci." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226510.
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The theme of this diploma thesis are the Selected Parts of Building and Technological Project for Football Tribune of Ander Stadium in Olomouc. The content of this diploma thesis is the technological process of assembly of the building bearing construction of prefabricated concrete elements, the budget, the inspection and the test plan, the issue of safety and health at the construction site, the project concerning the construction site installation, the mechanical assembly, assessment of tower crane, object time and financial plan, construction technology study and the construction timetable.
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Wünsche, Dominik. "Diagnostika a hodnocení mostní konstrukce." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2021. http://www.nusl.cz/ntk/nusl-433535.
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The diploma thesis deals with the issue of bridge strustures, especially their diagnostics and evaluation. The work consists of two parts, theoretical and practical. The theoretical part deals with the basic description and division of bridge structures, brigde inspections and test methods, especially those that were used in the thesis during bridge inspections. The practical part includes a visual inspection of two bridges, their description, detection of faults and defects and their documentation. In the practical part, the basic maretial characteristics of concrete bridges were determined, the condition of structures was assessed and a proposal for the elimination of failures and defects was developed. In the end, the work deals with the evaluation of both bridges.
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Šnédar, Jaroslav. "Průzkum a hodnocení železobetonové mostní konstrukce." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409961.
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The aim of this thesis is to evaluate the real condition of reinforced concrete beam bridge located in Brno Jundrov. In order to evaluate this condition, there was made the main bridge inspection. Subsequently, a number of diagnostic methods were used, such as hardness tests, concrete stress strenght, ultrasonic pulse method, including their evaluation. In terms of the main inspection, the condition of construction of the bridge was evaluated as V - bad. We found out that the concrete from which the bridge is built of is in very good condition. The problem, however, is the condition of the reinforcement located on the bridge. Based on its condition there must be expected lifespan within the next 5-10 years.
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Susinskas, Larisa Diana. "Field Observation of Installation and Performance of Repair Materials." Cleveland State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=csu1471613271.
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Kasza, Radomír. "Stavebně technologický projekt Pavilonu farmacie na VFU v Brně." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-227057.
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This master´s thesis solves the construction technological project of Pharmacy Pavilon II at the Veterinary University in Brno. It consists of parts of the project site equipment, technical reports, schedule of the main building, the control and test plan, design, an inventory of machines, financial plan of organization development, a register of environmental aspects, technological regulations and the plan for securing material resources.
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Gomez-Cardenas, Carolina. "Outils d'aide à l'optimisation des campagnes d'essais non destructifs sur ouvrages en béton armé." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30177/document.
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Les méthodes de contrôle non destructif (CND) sont essentielles pour estimer les propriétés du béton (mécaniques ou physiques) et leur variabilité spatiale. Elles constituent également un outil pertinent pour réduire le budget d'auscultation d'un ouvrage d'art. La démarche proposée est incluse dans un projet ANR (EvaDéOS) dont l'objectif est d'optimiser le suivi des ouvrages de génie civil en mettant en œuvre une maintenance préventive afin de réduire les coûts. Dans le cas du travail de thèse réalisé, pour caractériser au mieux une propriété particulière du béton (ex : résistance mécanique, porosité, degré de Saturation, etc.), avec des méthodes ND sensibles aux mêmes propriétés, il est impératif de développer des outils objectifs permettant de rationaliser une campagne d'essais sur les ouvrages en béton armé. Dans ce but, premièrement, il est proposé un outil d'échantillonnage spatial optimal pour réduire le nombre de points d'auscultation. L'algorithme le plus couramment employé est le recuit simulé spatial (RSS). Cette procédure est régulièrement utilisée dans des applications géostatistiques, et dans d'autres domaines, mais elle est pour l'instant quasiment inexploitée pour des structures de génie civil. Dans le travail de thèse, une optimisation de la méthode d'optimisation de l'échantillonnage spatial (MOES) originale inspirée du RSS et fondée sur la corrélation spatiale a été développée et testée dans le cas d'essais sur site avec deux fonctions objectifs complémentaires : l'erreur de prédiction moyenne et l'erreur sur l'estimation de la variabilité. Cette méthode est décomposée en trois parties. Tout d'abord, la corrélation spatiale des mesures ND est modélisée par un variogramme. Ensuite, la relation entre le nombre de mesures organisées dans une grille régulière et la fonction objectif est déterminée en utilisant une méthode d'interpolation spatiale appelée krigeage. Enfin, on utilise l'algorithme MOES pour minimiser la fonction objectif en changeant les positions d'un nombre réduit de mesures ND et pour obtenir à la fin une grille irrégulière optimale. Des essais destructifs (ED) sont nécessaires pour corroborer les informations obtenues par les mesures ND. En raison du coût ainsi que des dégâts possibles sur la structure, un plan d'échantillonnage optimal afin de prélever un nombre limité de carottes est important. Pour ce faire, une procédure utilisant la fusion des données fondée sur la théorie des possibilités et développée antérieurement, permet d'estimer les propriétés du béton à partir des ND. Par le biais d'un recalage nécessitant des ED réalisés sur carottes, elle est étalonnée. En sachant qu'il y a une incertitude sur le résultat des ED réalisés sur les carottes, il est proposé de prendre en compte cette incertitude et de la propager au travers du recalage sur les résultats des données fusionnées. En propageant ces incertitudes, on obtient des valeurs fusionnées moyennes par point avec un écart-type. On peut donc proposer une méthodologie de positionnement et de minimisation du nombre des carottes nécessaire pour ausculter une structure par deux méthodes : la première, en utilisant le MOES pour les résultats des propriétés sortis de la fusion dans chaque point de mesure et la seconde par la minimisation de l'écart-type moyen sur la totalité des points fusionnés, obtenu après la propagation des incertitudes des ED. Pour finir, afin de proposer une alternative à la théorie des possibilités, les réseaux de neurones sont également testés comme méthodes alternatives pour leur pertinence et leur simplicité d'utilisationNon-destructive testing methods (NDT) are essential for estimating concrete properties (mechanical or physical) and their spatial variability. They also constitute an useful tool to reduce the budget auscultation of a structure. The proposed approach is included in an ANR project (EvaDéOS) whose objective is to optimize the monitoring of civil engineering structures by implementing preventive maintenance to reduce diagnosis costs. In this thesis, the objective was to characterize at best a peculiar property of concrete (e.g. mechanical strength, porosity, degree of saturation, etc.), with technical ND sensitive to the same properties. For this aim, it is imperative to develop objective tools that allow to rationalize a test campaign on reinforced concrete structures. For this purpose, first, it is proposed an optimal spatial sampling tool to reduce the number of auscultation points. The most commonly used algorithm is the spatial simulated annealing (SSA). This procedure is regularly used in geostatistical applications, and in other areas, but yet almost unexploited for civil engineering structures. In the thesis work, an original optimizing spatial sampling method (OSSM) inspired in the SSA and based on the spatial correlation was developed and tested in the case of on-site auscultation with two complementary fitness functions: mean prediction error and the error on the estimation of the global variability. This method is divided into three parts. First, the spatial correlation of ND measurements is modeled by a variogram. Then, the relationship between the number of measurements organized in a regular grid and the objective function is determined using a spatial interpolation method called kriging. Finally, the OSSM algorithm is used to minimize the objective function by changing the positions of a smaller number of ND measurements and for obtaining at the end an optimal irregular grid. Destructive testing (DT) are needed to corroborate the information obtained by the ND measurements. Because of the cost and possible damage to the structure, an optimal sampling plan to collect a limited number of cores is important. For this aim, a procedure using data fusion based on the theory of possibilities and previously developed is used to estimate the properties of concrete from the ND. Through a readjustment bias requiring DTs performed on carrots, it is calibrated. Knowing that there is uncertainty about the results of DTs performed on carrots, it is proposed to take into account this uncertainty and propagate it through the calibration on the results of the fused data. By propagating this uncertainty, it is obtained mean fused values with a standard deviation. One can thus provide a methodology for positioning and minimizing the number of cores required to auscultate a structure by two methods: first, using the OSSM for the results of fused properties values in each measuring point and the second by the minimization of the average standard deviation over all of the fused points obtained after the propagation of DTs uncertainties. Finally, in order to propose an alternative to the possibility theory, neural networks are also tested as alternative methods for their relevance and usability
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Rapant, Radek. "Stavebně technologický projekt Domova důchodců Brno - Tuřany." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240485.
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The thesis is elaborated on the basis of project of the retirement home Brno – Tuřany. The thesis is focused on building technology solutions of construction of the retirement home Brno – Tuřany. The main part of the thesis deals with realization of rough construction DCI, especially with detailed description and draft solution for making the ceilings and elliptical reinforced concrete staircase (tube). Apart from the impressive architectonic draft solution of main staircase of the building, it will be interesting to deal with progress of the whole construction that is divided into three dilatational parts.
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Hetteš, Adrián. "Průmyslová hala Moravany - vybrané části stavebně technologického projektu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392090.
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The aim of this diploma thesis is the preparation of a constructional-technology study into the realization of carcass industry hall in the village Moravany u Brna. An itemized budget has been created for the framework alongside a proposal for the main building mechanisms, time management, health and safety plan and environmental management. The thesis is focused on detailed realization of the precast concrete frame which outlines technological regulation and inspection and a trial plan. The thesis further deals with site equipment, possible public transport routes into specific areas and how the main technological stages are developed. In creation of this thesis were used constructional-technological softwares BuildPowerS, CONTEC, ArchiCAD, AutoTurn, Vehicle Tracking and Hluk+9.
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Výpustek, Libor. "Průzkum a hodnocení mostu na dálnici D2." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225738.
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This thesis deals with the exploration and evaluation of the existing bridge carried him on the highway D2. The work is divided into theoretical and practical parts. The theoretical part focuses on the technical surveys, diagnosis of building structures and some methods of investigation and testing of building structures. In the practical part the visual inspection and diagnosis of disorders of the highway bridge substructures ev. No. D2-058, to determine material characteristics substructure and evaluate the state of the bridge. In conclusion, the practical part of the recommendations for the design and method of repairing the bridge.
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Bechyně, Petr. "Výrobní hala Lysá nad Labem - stavebně technologický projekt." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265269.
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This thesis deals with the progress in the construction of the manufacturing hall in Lysa nad Labem. Mainly focuses on the technological phase of mounting reinforced concrete frame which is processed technological prescription too. There are also chapters dealt with elements of site facilities, transport relations, machine mechanisms, inspection and controling plan, or ecology and health and safety.
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Rada, Stanislav. "Wellness centrum Jinačovice, stavebně technologická příprava stavby." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226976.
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The subject of this thesis is also dealt with construction of the second phase of the congress and wellness centre in Jinačovice. The work includes technical report, time and financial plan, project site equipment, technical regulations, inspection and test plans, implementation of technology water impermeable concrete
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Zíb, Petr. "Průzkum a posouzení existujícího výrobního objektu pro rekonstrukci." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225369.
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Overview of diagnostic methods. Inspection of buildings and structures - photographic documentation of the existing situation, analysis of documents. Design of diagnostic tests, treatment plan, diagnostic investigation and determination of critical deficiencies. Carrying out the survey and sampling. Evaluation and classification of materials. Static assessment of the selected design.
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Malý, Martin. "Skladová hala v Měříně, příprava a organizace stavby." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372192.
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The aim of this work is the processing of the technological project for the ,,Skladová hala v Měříně“, which addresses the preparation and organization of construction. Construction technology the project involves the processing of time plans, economic evaluation, design of pumping sources for construction, working procedures, construction site equipment, and design of major machines and mechanisms. Further, it is processed a detailed technological regulation and inspection and test plan for a prefabricated reinforced concrete skeleton. All technological procedures are processed with regard to work safety and environment.
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Hladíková, Simona. "Stavebně technologický projekt objektu Vilaparku v Olomouci." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409925.
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The assignment for the diplomatic work was mentioned in the technological project of the Vila Park in Olomouc. The task was to mention the underground floor of the 2nd dilatation and the building of the apartment house B7 with three floors, which is connected via the basement communication. The content of the technical report in the construction technology project, broader relationships, land-use planning, timeable, equipment design, machine assembly design, technological prescription of waterproof concrete construction, control and test plan, plan and item budget.
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Ševčík, Tomáš. "Stavebně technologický projekt integrovaného výjezdového centra Ostrava Dubina." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240115.
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This diploma thesis deals with construction-technological project of integrated emergency dispatch centre in Ostrava Dubina. In this work I especially deal with dispatch centre. Work included planning study of realization of the main technical stages, technological prescription for precast concrete frame, construction site equipment, time and financial construction plan.
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Novák, Jiří. "Novostavba Přírodovědecké fakulty Jihočeské univerzity v Českých Budějovicích - příprava realizace stavby." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226089.
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This thesis deals with the preparation of construction management, Faculty of Science, University of South Čekých Budějovice. The work includes a technical report on building technological project, coordinating the situation, time and financial plan, a study of the implementation of the main technological stages, the design of construction machines and mechanisms, the schedule of the main building structure, technological prescription for ventilated facade structures, inspection and test quality plan for the object SO 100, itemized budget plan and the main subject of risks arising from the construction and their action.
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Dvořák, Tomáš. "Novostavba administrativní budovy a školícího střediska v Humpolci - příprava realizace a řízení stavby." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227174.
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The diploma thesis deals with the constructive-technological project of the administrative building in Humpolec.This project mainly addressed construction by the building structures, site equipment, implementation of cast-in-place reinforced concrete floor, budget and chronological plan of buildings. The work was based on the project for implementation.
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Gonçalves, Márcio de Oliveira. "Marquises de concreto armado da cidade de Viçosa-MG: manifestações patológicas, inspeção e avaliação de grau de deterioração." Universidade Federal de Viçosa, 2011. http://locus.ufv.br/handle/123456789/3741.
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Previous issue date: 2011-02-21Marquees can be defined as elements that are part of the building and they are projected on public areas, with projections in the plan of the facades. Structural accidents with these elements are more and more frequent and they show the risk that a lot of times these structures can bring. Many are the common pathological manifestations in marquees, with several causes, as project mistakes, execution and use. The city of Viçosa - MG possesses several marquees in central area, some with pathological manifestations that need studies. The several examples of accidents, some recent ones, and the fact that still didn't exist studies of the marquees of the city, where at least a sinister one happened, they show the need to develop a work with these elements. Like this being, with the objective of evaluating the structural acting of marquees of armed concrete in the city of Viçosa 59 marquees were registered, of which 8 went by technical inspection. In these inspections they were identified the main pathological manifestations and maintenance conditions. With the use of methods a little destructive geometric risings were accomplished, identification of depth carbonation with alcoholic solution of phenolphthalein, corrosion identification in reinforcing steel rods and verification of general conditions of the concrete. Besides, it was used in the evaluation the methodology GDE/UnB for quantification of the risk degree. The obtained results evidence the importance of inspections in marquees of reinforced concrete and they show that some need immediate interventions to avoid larger risks. It is possible to notice although some marquees don't go by maintenance and they possess deteriorations, some with possibility of committing the element. It was possible to end although the methodology GDE/UnB can be applied for quantification of risk degree in marquees, except in marquees with insufficient reinforcing steel rods or without reinforcing steel rods, or in the cases that the reinforcing steel rods where are positioned incorrectly. Then some are proposed measured for construction and maintenance of marquees, to avoid that these elements deteriorate and they can suffer collapse.
Marquises podem ser definidas como elementos que fazem parte do edifício e se projetam sobre logradouros públicos, com balanços engastados no plano das fachadas. Acidentes estruturais com estes elementos são cada vez mais frequentes e mostram o risco que muitas vezes estas estruturas podem trazer. Muitas são as manifestações patológicas comuns em marquises, com causas diversas, como erros de projeto, execução e utilização. A cidade de Viçosa-MG possui várias marquises em sua região central, algumas com manifestações patológicas que necessitam de estudos. Os vários exemplos de acidentes, alguns recentes, e o fato de que não existiam ainda estudos das marquises da cidade, onde pelo menos um sinistro ocorreu, mostram a necessidade de desenvolver um trabalho com estes elementos. Assim sendo, com o objetivo de avaliar o desempenho estrutural de marquises de concreto armado na cidade de Viçosa foram cadastradas 59 marquises, das quais 8 passaram por inspeção técnica. Nestas inspeções foram identificadas as principais manifestações patológicas e condições de manutenção. Com o uso de métodos pouco destrutivos, foram realizados levantamentos geométricos, identificação de profundidade de carbonatação com solução alcoólica de fenolftaleína, identificação de corrosão em armaduras e verificação de condições gerais do concreto. Além disto, foi utilizada na avaliação a metodologia GDE/UnB para quantificação do grau de risco. Os resultados obtidos evidenciam a importância de inspeções em marquises de concreto armado e mostram que algumas necessitam de intervenções imediatas para evitar maiores riscos. É possível perceber ainda que algumas marquises não passam por manutenção e possuem deteriorações, algumas com possibilidade de comprometer o elemento. Foi possível concluir ainda que a metodologia GDE/UnB pode ser aplicada para quantificação de grau de risco em marquises, exceto em marquises com armadura insuficiente ou sem armaduras, ou ainda nos casos onde estas estejam posicionadas incorretamente. São propostas então algumas medidas para construção e manutenção de marquises, para evitar que estes elementos se deteriorem e possam sofrer colapso.
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Havlíček, Jakub. "Zázemí sportovního areálu - stavebně technologický projekt." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409923.
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This diploma thesis is dealing with a construction and technological project of the backgrounds and changing rooms of the sports centre in Velké Meziříčí. An engineering report of the construction and technological project, a suggested plan of transport routes and a time and financial plan for all the building facilities are included. With a realization study of the main technological phases, a site equipment project and a suggested list of the main construction vehicles and mechanisms is being dealt in another part of the thesis. In addition to these there is a time plan of the main construction object, an itemized budget, a time deployment of machines and workers and a plan for securing all the material resources needed. An engineering report for assembling prewalls from fair-faced concrete plus a design of a systemic formwork follow. More detailed engineering report of a Spiroll ceiling panels’ assembly is part of the inspection and test plan. Last but not least, an OSH plan for installation works with a mobile crane and a noise study can also be found in this thesis.
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Šusták, Miroslav. "Multifunkční centrum Hlinsko - příprava a realizace stavby." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226490.
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Diploma work Multifunction Centre Hlinsko - preparation and realization of the covers technological studies throughout the building. Diploma work proposes a temporal, financial and material resources. The work included construction budget, schedule of work, technical regulations for demolition, implementation and installation of reinforced concrete ceiling glulam beams. For each technological regulation is developed inspection and test plan. The work includes the project site equipment. Diploma work is based on the technical documents supplied by the designer. The work also includes specialty.