Academic literature on the topic 'Bridges Bridges Concrete bridges'

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Journal articles on the topic "Bridges Bridges Concrete bridges"

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Siwowski, Tomasz, and Piotr Żółtowski. "Strengthening Bridges with Prestressed CFRP Strips." Selected Scientific Papers - Journal of Civil Engineering 7, no. 1 (June 1, 2012): 79–86. http://dx.doi.org/10.2478/v10299-012-0021-2.

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Abstract Limitation of bridge’s carrying bearing capacity due to aging and deterioration is a common problem faced by road administration and drivers. Rehabilitation of bridges including strengthening may be applied in order to maintain or upgrade existing bridge parameters. The case studies of strengthening of two small bridges with high modulus prestressed CFRP strips have been presented in the paper. The first one - reinforced concrete slab bridge - and the other - composite steel-concrete girder bridge - have been successfully upgraded with quite new technology. In both cases the additional CFRP reinforcement let increasing of bridge carrying capacity from 15 till 40 metric tons. The CFRP strip prestressing system named Neoxe Prestressing System (NPS), developed by multi-disciplinary team and tested at full scale in Rzeszow University of Technology, has been also described in the paper.
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Ye, Yi, Shen Shan Pan, and Zhe Zhang. "A Method of Strengthening Concrete Suspension Bridges." Advanced Materials Research 163-167 (December 2010): 3707–12. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.3707.

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The method of strengthening the existing reinforced concrete suspension bridges by changing suspension system into cable – stayed- suspension system is presented in this paper. Based on a typical bridge, the analysis of the static behavior of the bridge before and after the strengthening is preformed. The results show that the bending moment of the girder is reduced obviously and the capacity of carrying load is greatly improved. The original cable system is fully utilized and can meet force requirement. It has certain theory significance and practical engineering value to the similar bridge’s strengthening.
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Yu, Tong-Hua. "Concrete trussed arch bridges in China." Canadian Journal of Civil Engineering 14, no. 6 (December 1, 1987): 820–27. http://dx.doi.org/10.1139/l87-120.

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In this paper, the following points are presented: the valuable advantages of the concrete trussed arch bridge; the design consideration and simplified analysis of the bridge; the level of secondary stresses induced in the ends of truss members; the application of prestress to tensile members and bending sections of trusses; and different ways of construction of the bridge.A five-span prestressed concrete trussed arch bridge named the Zhushanlu Road Bridge at Jingdezhen City, Jiangxi Province, is described as an example of medium span bridges of the type popularly adopted in Chinese highway system and the municipal construction since the late sixties. Key words: prestressed concrete, hinged truss, thrust, secondary stress, anchorage, pretensioning, precast.
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Helowicz, Andrzej. "Integral bridge and culvert design, Designer’s experience." Open Engineering 10, no. 1 (June 5, 2020): 499–505. http://dx.doi.org/10.1515/eng-2020-0059.

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AbstractThis paper describes a small single-span integral bridge made of in-situ concrete. The bridge was designed by the author and built on the M9 motorway between the towns of Waterford and Kilcullen in Ireland. Selected parts of the bridge design are presented. First the principles of modelling and designing integral bridges and culverts are explained. Then the considered bridge’s design is described. The advantages and disadvantages of such structures are discussed. The focus is on the design, construction, cost and in-service behaviour of small integral bridges and culverts. In Conclusions the author shares his knowledge and experience relating to the design of small integral bridges and culverts and puts forward recommendations as to further research on this type of structures in Poland.
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Che, Xiao Jun, Xie Dong Zhang, and Chao Yang. "Remaining Pre-Stress Identification of Diseased Pre-Stressed Concrete Bridges Based on Neural Network." Advanced Materials Research 639-640 (January 2013): 1056–59. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.1056.

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According to experimental record of bridges in use, more and more damage bridges have appeared, and the most common and severe defect is the bridge damage and cracking problem, which has seriously affected the normal usage of bridges. Analyzing the disease cause of defective bridges more effectively and deeply, in order to optimize the design and construction of bridges becomes the urgent problem in the engineering field. The study is based on the design, construction data and experimental record of the bridge.A non-linear mapping function from multiple input data (the deck elevation of each element in destructing) to multiple output data(the change of pre-stress) is constructed within BP neural networks. Based on the theory of continuous function, the convergence is disadvantageous between 0 and 1. The study shows the expected output data between 0.05 and 0.95 are better for convergence. According to the real data of bridge floor line change in process of destruction, the released pre-stresses are recognized, and the real pre-stresses in existence are calculated by scheme of cable design. The study not only offers reliable scientific basis for analyzing the disease cause in the bridges, but also is helpful to design of the bridges having same structural style.
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Su, Dan, Yi-Sheng Liu, Xin-Tong Li, Xiao-Yan Chen, and Dong-Han Li. "Management Path of Concrete Beam Bridge in China from the Perspective of Sustainable Development." Sustainability 12, no. 17 (September 1, 2020): 7145. http://dx.doi.org/10.3390/su12177145.

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More and more bridges have entered the maintenance stage, which has potential collapse hazards and threatens life and property safety. More attention has been paid to the improvement of maintenance management levels during the operation period in terms of extending the service life of the bridge, but less attention has been paid to it from the perspective of the whole life cycle. One hundred and ninety examples of concrete beam bridges in China were collected, based on which the collapse characteristics and collapse causes of concrete beam bridges were analyzed. The causes of bridge collapse come from all stages of bridge life cycle, including environmental factors and human factors. Moreover, the effects of the previous phase carry over to the next. Superficially, poor maintenance management during an operation led to bridge collapse. However, the root cause may have occurred at an earlier stage. On this basis, a fuzzy interpretation structure model (FISM) for concrete beam bridge deterioration is conducted. The model can decompose the complex and messy relationship among the factors of bridge collapse into a clear, multi–level and hierarchical structure. Compared with qualitative analysis, an ISM chart can directly reflect the relationship between collapse factors, which is convenient for further analysis. Poor maintenance management during operation is the direct cause, while improper planning, imperfect standards and weak supervision in the early stage are the fundamental causes. Finally, in order to improve the sustainability of concrete beam bridges scientifically, management suggestions are put forward for the participants involved in each stage of the bridge’s life cycle.
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An, Xin Zheng, Cheng Yi, and Rui Xue Du. "Performance Deterioration Behavior of Existing Reinforced Concrete Bridges." Advanced Materials Research 79-82 (August 2009): 1367–70. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.1367.

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The analyses of concrete from a bridge in Handan district shows that most bridges concrete should have cracked. The study of the technical measures against the performance deterioration of existing reinforced concrete bridges will undoubtedly become an imperative issue. In recent years, lots of bridges have been built in Handan. We choose a reinforced concrete bridge to investigate the effect of the effective member stiffness degradation and durability degradation induced by vehicle overload, vehicle overflow, rebar corrosion, and concrete deterioration on highway reinforced concrete bridges. And Static loading test was conducted at its middle span. Based on the test data in different circumstances, the seriousness of vehicle overload is discussed. In consequence, the performance of highway reinforced concrete bridges on stiffness degradation and durability degradation is more serious compared with the bridge under the condition of non-overloading. The results show that the process of rebar corrosion in highway reinforced concrete bridges is sped up under the condition of vehicle overload and vehicle overflow on the highway reinforced concrete bridges, which decreases the durability of the bridge structure, and the speed of the durability degradation increases as time goes on. The paper conclusion is instructive for the construction and maintenance of bridge.
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Atadero, Jia, Abdallah, and Ozbek. "An Integrated Uncertainty-Based Bridge Inspection Decision Framework with Application to Concrete Bridge Decks." Infrastructures 4, no. 3 (August 8, 2019): 50. http://dx.doi.org/10.3390/infrastructures4030050.

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The limitations of the standard two-year interval for the visual inspection of bridges required by the U.S. National Bridge Inspection Standards have been well documented, and alternative approaches to bridge inspection planning have been presented in recent literature. This paper explores a different strategy for determining the interval between inspections and the type of inspection technique to use for bridges. The foundational premise of the proposed approach is that bridge inspections are conducted to increase knowledge about the bridge’s current condition, and therefore, are only required when uncertainty about the knowledge of the bridge condition is too high. An example case of a reinforced concrete bridge deck was used to demonstrate how this approach would work. The method utilized deterioration models for predicting corrosion and crack initiation time, considering the uncertainty in the models’ parameters. Bridge inspections were used to update the current condition information and model parameters through Bayesian updating. As this paper presents a new idea for inspection planning, not all of the data or models necessary to fully develop and validate the approach currently exist. Nonetheless, the method was applied to a simulated example which demonstrates how the timing and means of bridge inspection can be tailored to provide the required data about individual bridges needed for effective bridge management decision making.
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Wang, Chun Sheng, Xiao Liang Zhai, Jing Wei Zhu, and Shuang Jie Zheng. "Research and Application of Composite Girder with Concrete Filled Tubular Flange." Advanced Materials Research 250-253 (May 2011): 2538–41. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.2538.

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In order to promote the applications of steel and concrete composite girder with concrete-filled tubular up-flange (SCCGCFTF) in practical bridge engineering, some actual issues for SCCGCFTF bridge structures have been discussed. The finite element static and dynamic analysis models of SCCGCFTF and conventional composite I-shape girder (CCIG) bridge structures were established. Then the stiffness, stress and dynamic characteristics of these composite girder bridges were studied and compared. Based on the numerical analysis results, the mechanical characters of SCCGCFTF bridges are obtained, and some design rules for SCCGCFTF bridges are also proposed. The analysis results show that SCCGCFTF bridges have high practical engineering application value.
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Sun, Limin, Yi Zhou, and Zhihua Min. "Experimental Study on the Effect of Temperature on Modal Frequencies of Bridges." International Journal of Structural Stability and Dynamics 18, no. 12 (November 9, 2018): 1850155. http://dx.doi.org/10.1142/s0219455418501559.

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This study investigates the relationship between the temperature and the modal frequencies of bridges through a series of model experiments using a concrete continuous beam bridge model and a steel cable-stayed bridge model in a controlled-temperature chamber. The experimental results show that, for a given boundary condition and in the absence of freezing, a change in temperature affects the structural frequencies of the bridge as it alters the elastic modulus of the bridge materials. The structural frequency tends to linearly decrease with increasing temperature and with the decrease in the frequency of steel bridges smaller than that of concrete bridges. For the particular case of wet concrete bridges, the temperature dependencies of modal frequencies vary dramatically near the freezing point, which is attributable to the freeze–thaw process of concrete pore water. The effect of air humidity on structural frequency is less significant than that of temperature when the boundary conditions remain unchanged. Furthermore, temperature changes may alter the boundary conditions of bridges, thereby affecting the structural frequencies.
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Dissertations / Theses on the topic "Bridges Bridges Concrete bridges"

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Matta, Fabio. "Innovative solutions in bridge construction, rehabilitation, and structural health monitoring." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.umr.edu/thesis/pdf/MattaPhD_Dissertation_09007dcc8038f8b1.pdf.

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Thesis (Ph. D.)--University of Missouri--Rolla, 2007.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 15, 2007) Includes bibliographical references.
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Tullu, Kulbhushan S. (Kulbhushan Sharashchandra). "Rehabilitation of concrete bridges." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61065.

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This thesis presents the various methods of assessment and repair of damage to concrete bridges. The current repair and replacement techniques are identified and evaluated. Plausible repair-in-place techniques being used presently are reviewed along with the relevant details. Guidance is also provided for inspection and assessment of damage from accidents, fire, design and construction defects, and other causes.
Suggested guidelines for damage assessment and for selection of repair methods are presented along with some examples from the existing practice. The repair methods have been evaluated on the basis of load requirements, speed of repairs, durability, relative costs, aesthetics, materials, methods, and engineering solutions.
The thesis also deals summarily with the subject of bridge management systems, highlighting the need for effective maintenance and repair management strategies. Examples of two software packages being used currently for management purposes are presented. The case histories presented highlight the various current practices of rehabilitation and replacement.
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Colldin, Ylva. "Waterproofing of concrete bridges." Licentiate thesis, Luleå, 1991. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26008.

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Bonvalot, Eliot. "Dynamic response of bridges to near-fault, forward directivity ground motions." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Thesis/Summer2006/e%5Fbonvalot%5F072606.pdf.

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Calloway, Benita R. "Yield line analysis of an AASHTO New Jersey concrete parapet wall." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09052009-040731/.

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Menkulasi, Fatmir. "Development of a Composite Concrete Bridge System for Short-to-Medium-Span Bridges." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/50413.

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The inverted T-beam bridge system provides an accelerated bridge construction alternative for short-to-medium-span bridges. The system consists of adjacent precast inverted T-beams finished with a cast-in-place concrete topping. The system offers enhanced performance against reflective cracking, and reduces the likelihood of cracking due to time dependent effects. The effects of transverse bending due to concentrated wheel loads are investigated with respect to reflective cracking. Transverse bending moment are quantified and compared to transverse moment capacities provided by a combination of various cross-sectional shapes and transverse connections. A design methodology for transverse bending is suggested. Tensile stresses created due to time dependent and temperature effects are quantified at the cross-sectional and structure level and strategies for how to alleviate these tensile stresses are proposed. Because differential shrinkage is believed to be one of the causes of deck cracking in composite bridges, a study on shrinkage and creep properties of seven deck mixes is presented with the goal of identifying a mix whose long terms properties reduce the likelihood of deck cracking. The effects of differential shrinkage at a cross-sectional level are numerically demonstrated for a variety of composite bridge systems and the resistance of the inverted T-beam system against time dependent effects is highlighted. End stresses in the end zones of such a uniquely shaped precast element are investigated analytically in the vertical and horizontal planes. Existing design methods are evaluated and strut-and-tie models, calibrated to match the results of 3-D finite element analyses, are proposed as alternatives to existing methods to aid designers in sizing reinforcing in the end zones. Composite action between the precast beam and the cast-in-place topping is examined via a full scale test and the necessity of extended stirrups is explored. It is concluded that because of the large contact surface between the precast and cast-in-place elements, cohesion alone appears to provide the necessary horizontal shear strength to ensure full composite action. Live load distribution factors are quantified analytically and by performing four live loads tests. It is concluded that AASHTO's method for cast-in-place slab span bridges can be conservatively used in design.
Ph. D.
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Yuen, Lik Hang. "Performance of Concrete Bridge Deck Joints." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd674.pdf.

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Johnson, Jeffrey Keith. "Concrete bridge deck behavior under thermal loads." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/johnson/JohnsonJ0805.pdf.

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Nelson, Douglas A. "Investigation of Concrete Mixtures to Reduce Differential Shrinkage Cracking in Composite Bridges." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/24425.

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The objective of the research presented in this thesis was to develop a concrete bridge deck topping mixture that resists the effects of differential shrinkage by decreasing shrinkage and increasing creep. . In addition, the amount of tensile creep that concrete experiences under long-term tensile stresses were quantified and compared to compressive creep values in order to gain a better understanding of how concrete behaves under tension. Test results show that the amount of tensile creep exceeded compressive creep by a factor of 2-5. Various shrinkage and creep models were compared against test data in order to quantify results and determine the best model to use for the mixes examined during this research project. Data analysis revealed that the AASHTO time dependent effects (shrinkage and creep) models outperformed the other models used in this research project. Other material property data including compressive strength, splitting tensile strength, Young's modulus of elasticity, and unrestrained shrinkage was also collected to compare against a common bridge deck topping mix to ensure that the mixes used in this research project are suitable for use in the field. A parametric study utilizing the Age Adjusted Effective Modulus (AAEM) method was performed which showed that the most important factor in reducing tensile stresses was to decrease the amount of shrinkage experienced by the concrete bridge deck topping mixture. Three concrete mixtures, one included saturated lightweight aggregates (SLWA), one including ground granulated blast furnace slag (GGBFS), and one incorporating both were tested. Preliminary results show that the inclusions of SLWA into a concrete mixture reduced shrinkage by 25% and overall tensile stress by 38%.
Master of Science
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Eriksson, Viktor. "Design of Ultra High Performance Fibre Reinforced Concrete Bridges : A Comparative Study to Conventional Concrete Bridges." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75183.

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The use of Ultra High Performance Fibre Reinforced Concrete (UHPFRC) in the construction industry started in the 1990s and has since then been used for bridges all over the world. The mechanical properties and the dense matrix result in lower material usage and superior durability compared to conventional concrete, but the implementation of UHPFRC in the Swedish industry has been delayed. The most evident explanation, based on interview with industry representatives, as to why UHPFRC is not commonly used in Sweden are due to the lack of standards and knowledge. UHPFRC also has a high cement content and the cement industry contributes with high carbon dioxide (CO2) emissions to the total CO2 emissions in the world. This MSc Thesis looks into if a UHPFRC bridge is a feasible alternative to a conventional reinforced concrete structure bridge from design and material usage perspectives, regarding reduction of CO2 emissions. The project’s overall goal is to increase the knowledge in Sweden about the material, regarding the production, mechanical properties and behaviour of UHPFRC, and the design, regarding the difference in design between UHPFRC and conventional concrete bridges. To examine the material, a UHPFRC mixture with short straight steel fibres was developed. Specimens were tested to see how the different fibre contents affect the mechanical properties and which fibre content that is most favourable. Three different fibre contents were tested: 1.5%, 2.0% and 2.5% of the total volume of the mixture. The tested and evaluated mechanical properties were workability, flexural strength, tensile strength, fracture energy, compressive strength and modulus of elasticity. This study does not contain tests of durability of UHPFRC, however trough the literature review it was investigated to what extent the fibres affect the durability. It was concluded that an increase in fibre content results in improved mechanical properties, except for workability and in some cases when using a fibre content of 2.5%. The increase in the mechanical properties is due to the increased cracking resistance and the bond strength between the fibres and the matrix. The decrease in the mechanical properties, e.g. characteristic tensile strength and compressive strength of cylinders, for 2.5% in fibre content can be due to uneven fibre distribution and higher amount of air in the specimens which result in less strength. It was concluded that 2.0% in fibre content is most favourable. It was possible to conclude that the degradation of the fibres takes a long time, however not to what extent the fibres will affect the durability. To evaluate if UHPFRC is a viable economical and environmental alternative to regular concrete bridges, three cases of bridge design are considered. Two cases with UHPFRC (different thickness) and one case with conventional concrete. Up to 2017 only technical guidelines and recommendations for design with UHPFRC existed, but in 2017 the first approved standards in the world were published. The French national standards cover material (NF P18-470, 2016) and design (NF P18-710, 2016) and were used for the design process. The material usage regarding the amount of reinforced UHPFRC/concrete and steel reinforcement as well as the amount of CO2 emissions from the production of cement and steel (fibre and steel reinforcement) used for the bridges in the mid-span and at the support were investigated. The design process was also evaluated. It was concluded that the UHPFRC bridge with an optimized thickness was 47% lighter than the conventional concrete bridge, but the amount of CO2 emissions was still higher (e.g. 23% from the support). To be able to determine if a UHPFRC bridge is a feasible alternative to a conventional concrete bridge, with regards to the reduction of CO2 emissions, the CO2 emissions have to be observed in a wider perspective than only from the production of cement and steel, e.g. fewer transports and longer lifetime.
Användningen av ultrahögpresterande fiberbetong (UHPFRC) i anläggningsindustrin började på 1990-talet och har sedan dess använts till broar i hela världen. De mekaniska egenskaperna och den täta UHPFRC matrisen resulterar i lägre materialanvändning och bättre beständighet i jämförelse med konventionell betong, men användningen av UHPFRC har inte slagit igenom i den svenska industrin. De största förklaringarna till varför UHPFRC sällan används i Sverige är för att det inte har funnits kunskap och standarder. UHPFRC har också en hög cementhalt och cementindustrin bidrar med höga koldioxid (CO2) utsläpp till de totala CO2 utsläppen i världen. Den här masteruppsatsen skrevs för att undersöka om en UHPFRC bro är ett möjligt alternativ till en konventionell betongbro ur dimensionering- och materialanvändningssynpunkt med avseende på reduktion av CO2 utsläpp. Projektets övergripande mål är att öka kunskapen om materialet, med avseende på tillverkningen, de mekaniska egenskaperna och beteendet av UHPFRC, och dimensionering, med avseende på skillnaden i dimensionering mellan UHPFRC broar och konventionella betongbroar. I materialdelen utvecklades ett UHPFRC recept med korta raka stålfibrer. Provkroppar testades för att se hur olika fiberinnehåll påverkade de mekaniska egenskaperna och vilket fiberinnehåll som var mest gynnsamt. Tre olika fiberinnehåll testades: 1.5%, 2.0% och 2.5% av total volym av blandningen. De mekaniska egenskaperna som testades och utvärderades var bearbetbarheten, böjhållfasthet, draghållfasthet, fraktur energi, tryckhållfasthet och elasticitetsmodul. Beständigheten av UHPFRC testades aldrig men i vilken omfattning fibrerna påverkar beständigheten undersöktes i den litteraturstudie som skrevs inför testerna och tillverkningen av UHPFRC. Det konstaterades att en ökning i fiberinnehåll resulterade i en ökning av de mekaniska egenskaperna, förutom för bearbetbarheten och i vissa fall när ett fiberinnehåll av 2.5% användes. Ökningen av de mekaniska egenskaperna berodde på det ökande sprickmotståndet och bindningsstyrka mellan fibrerna och matrisen. Minskningen av de mekaniska egenskaperna, till exempel den karakteristiska drag- och tryckhållfastheten, när ett fiberinnehåll på 2.5% i cylindrar användes kan bero på ojämn fiberfördelning och större mängd luft i provkropparna vilket resulterar i lägre hållfasthet. Det konstaterades att ett fiberinnehåll på 2.0% var det mest gynnsamma. Det kunde inte konstateras i vilken omfattning fibrerna påverkar beständigheten men det kunde konstateras att nedbrytningen av fibrerna tar lång tid. I dimensioneringsdelen utformades tre slakarmerade balkbroöverbyggnader, i två fall var överbyggnaden med UHPFRC (olika tjocklekar) och i ett fall var den med konventionell betong. Fram till 2017 fanns det bara tekniska riktlinjer och rekommendationer för UHPFRC men 2017 publicerades de första godkända standarderna i världen. De franska nationella standarderna täcker material (NF P18-470, 2016) och dimensionering (NF P18-710, 2016) och användes vid dimensioneringen. Materialanvändningen med avseende på mängd armerad UHPFRC/betong och slakarmering och mängd CO2 utsläpp från produktionen av cement och stål (fibrer och slakarmering) som användes till broarna i mittenspannet och vid stöden undersöktes. Även dimensioneringsprocessen utvärderades. Det konstaterades att UHPFRC bron med optimerad tjocklek var 47% lättare än betongbron men mängden CO2 utsläpp var fortfarande högre (till exempel 23% högre från stödet). Det konstaterades att om det ska vara möjligt att fastställa att en UHPFRC bro är ett möjligt alternativ till en konventionell betongbro, med avseende på reduktion av CO2 utsläpp, måste CO2 utsläppen ses från ett bredare perspektiv än från bara produktion av cement och stål, till exempel mindre transporter och längre livslängd.
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Books on the topic "Bridges Bridges Concrete bridges"

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Concrete bridges. New York: Taylor & Francis, 2006.

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Paul, Gauvreau, ed. Prestressed concrete bridges. Basel [Switzerland]: Birkhäuser Verlag, 1990.

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Menn, Christian. Prestressed Concrete Bridges. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8.

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Manning, David G. Removing concrete from bridges. Washington, D.C: Transportation Research Board, National Research Council, 1991.

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Steel-concrete composite bridges. London: Thomas Telford, 2005.

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Repair of concrete bridges. London: T. Telford, 1994.

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LaFraugh, Robert W. Concrete overlays for bridges. [Olympia, WA] (Highway Administration Bldg., Olympia 98504): Washington State Dept. of Transportation in cooperation with U.S. Dept. of Transportation, Federal Highway Administration, 1986.

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Virmani, Yash Paul. Corrosion protection: Concrete bridges. McLean, VA: Federal Highway Administration, 1998.

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Iqbal, Husain. Semi-integral abutment bridges. [Toronto]: Queen's Printer for Ontario, 1999.

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Hess, Jeffrey A. Historic highway bridges in Wisconsin. [Madison, Wis.]: Wisconsin Dept. of Transportation, 1986.

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Book chapters on the topic "Bridges Bridges Concrete bridges"

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Menn, Christian. "Historical Overview." In Prestressed Concrete Bridges, 1–47. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8_1.

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Menn, Christian. "Economy and Aesthetics." In Prestressed Concrete Bridges, 49–64. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8_2.

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Menn, Christian. "Materials and Actions." In Prestressed Concrete Bridges, 65–91. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8_3.

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Menn, Christian. "Fundamentals of Analysis and Design." In Prestressed Concrete Bridges, 93–210. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8_4.

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Menn, Christian. "Analysis and Design of Bridge Superstructures." In Prestressed Concrete Bridges, 211–75. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8_5.

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Menn, Christian. "Accessories." In Prestressed Concrete Bridges, 277–92. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8_6.

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Menn, Christian. "Design and Construction of Special Bridge Types." In Prestressed Concrete Bridges, 293–438. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8_7.

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Menn, Christian. "Analysis and Design of Bridge Substructures." In Prestressed Concrete Bridges, 439–506. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9131-8_8.

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Schacht, Gregor, Guido Bolle, and Steffen Marx. "Load Testing of Concrete Building Constructions." In Load Testing of Bridges, 109–41. Leiden : CRC Press/Balkema, [2019] | Series: Structures and infrastructures series, ISSN 1747-7735 ; volumes 12-13: CRC Press, 2019. http://dx.doi.org/10.1201/9780429265969-4.

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Martins, Alberto M. B., Luís M. C. Simões, and João H. J. O. Negrão. "Optimization of Extradosed Concrete Bridges." In Advances in Structural and Multidisciplinary Optimization, 1937–54. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67988-4_144.

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Conference papers on the topic "Bridges Bridges Concrete bridges"

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Täljsten, Björn, Thomas Blanksvärd, Gabriel Sas, Niklas Bagge, Jonny Nilimaa, Cosmin Popescu, Lennart Elfgren, Anders Carolin, and Jens Häggström. "Bridges Tested to Failure in Sweden." In IABSE Conference, Copenhagen 2018: Engineering the Past, to Meet the Needs of the Future. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/copenhagen.2018.064.

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Five bridges of different types have been tested to failure and the results have been compared to analyses of the load-carrying capacity using standard code models and advanced numerical methods. The results may help to make accurate assessments of similar existing bridges. There it is necessary to know the real behaviour, weak points, and to be able to model the load-carrying capacity in a correct way.<p> The five bridges were: (1) a strengthened one span concrete road bridge - Stora Höga ; (2) a one span concrete rail trough bridge loaded in fatigue – Lautajokk; (3) a two span strengthened concrete trough railway bridge - Övik; (4) a one span railway steel truss bridge -Åby; and (5) a five span prestressed concrete road bridge - Kiruna. The unique results in the paper are the experiences of the real failure types, the robustness/weakness of the bridges, and the accuracy and shortcomings/potentials of different codes and models for safety assessment of existing structures.
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Harrewijn, T. L., R. P. H. Vergoossen, and E. O. L. Lantsoght. "Reverse engineering of existing reinforced concrete slab bridges." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.0140.

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<p>Most bridges in the Dutch infrastructure are built before 1985 and have experienced increasing traffic intensities and loads. On the other hand, the structural (design) codes have changed over the years. A frequently faced problem in practice is that the original design calculations and technical drawings of a large percentage of the existing bridge stock are unknown or lost. Therefore, the current capacity of the bridge is unknown. The currently used method to map the reinforcement dimensions and amounts in an existing bridge is by (X-ray) scanning. As an alternative, this work proposes Reverse Engineering of the existing bridges, by redoing (a correct) former bridge design with a known design year and load class as a starting point. Consequently, the Reverse Engineered bridge design can be assessed according to the current Eurocodes. A parametric study reveals different capacity margins in bridge design than expected beforehand.</p>
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Johnson, Arne P., Gary J. Klein, and John S. Lawler. "Extending the Life of Historic Concrete Bridges." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.1080.

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<p>Open-spandrel, concrete arch bridges were a common bridge design in the United States during the early 1900s. Many of these bridges are now urban landmarks and listed historic structures that local jurisdictions wish to rehabilitate, including widening the deck to more safely accommodate pedestrians and bicyclists. However, decades of exposure in harsh climates have led to advanced deterioration and reduced load ratings for most extant examples. Further complicating rehabilitation, the height, and arch-reliant behavior of these bridges make construction access, staging, and maintenance of traffic difficult. Drawing upon the authors’ experience with several bridges of this type, this paper discusses best practices and special considerations for investigating and rehabilitating historic concrete arch bridges to extend their life.</p>
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Bajaj, Mayank, and Biswajit Bhattacharjee. "Residual service life estimation of bridges." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.0984.

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<p>While concrete structures perform well in many situations, lack of durability has emerged as a significant issue for asset owners. A review of past bridge failures was done to identify the most probable causes of bridge failures. This study has tended to focus on current models used for estimating the time to deterioration of concrete bridges instigated by Chloride ingress and Fatigue. Subsequently, mathematical modelling of the best-suited deterioration model is done to arrive at the residual life of two existing bridges. This work has highlighted high variability in the parameters used to describe the durability related properties of in-situ aged concrete. A realistic residual life assessment can be achieved by correct evaluation of these parameters by periodic testing of bridge samples</p>
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Kuhlmann, Ulrike, Simon Bove, Stephanie Breunig, and Karl Drebenstedt. "Fatigue of steel bridges." In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.7212.

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Highway and railway bridges are exposed to cyclic stressing due to traffic loads and, therefore, have to be evaluated concerning fatigue. In most cases the fatigue evaluation is performed according to Eurocode 3 Part 1-9 on nominal stresses. To apply this nominal stress approach a detail catalogue is required classifying all relevant constructional details in terms of fatigue. Unfortunately, the existing detail catalogue of Eurocode 3 Part 1-9 reflects the state of the art of the 1990s and misses constructional details being important for today’s bridge design. As an example the derivation of a new detail, the so-called lamellae joint, is presented. Furthermore, for two new types of innovative steel bridges, where Eurocode 3 Part 1-9 does not yet specify rules able to evaluate the characteristics of these bridges, research results are shown. These are the thick-plate trough bridges and truss bridges made of thick-walled circular hollow sections (CHS). The paper starts with an overview on the recent Eurocode developments, addressing more specific the fatigue verification according to EN 1993-1-9 and the statistical analysis of fatigue test data. In the following, information is given on the outcome of some recent research projects striving to extend the application range of Eurocode 3 Part 1-9. The final conclusion, in spite of all differences, show a common tendency.
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Lin, Weiwei, Heang Lam, and Teruhiko Yoda. "Mechanical Behaviour of Steel-Concrete Twin I-Girder Bridges." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.1077.

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<p>Steel-concrete composite twin I-girder bridges have been built a lot in both Europe and Japan, but the lack of redundancy has always been a concern in U.S. and many other countries. In addition, few experimental studies have been performed on the mechanical performance of such bridges, particularly for the intact bridges. On this background, a steel-concrete composite twin I-Girder bridge model was designed according to the current highway bridge design specification in Japan and tested in the laboratory. The static loading tests were performed, and two loading conditions including both symmetrical loading and unsymmetrical loading were applied. Load versus deflection relationships were measured in the loading test, and the failure mode of the test specimen was discussed. The flexural strain development on bottom flanges of two main girders was also reported in this paper to confirm the load transfer between two main girders. In addition, the theoretical results on the basis of the classic theory were also provided to compare with the test results. The comparison indicates that the theoretical analyses can predict the behaviour of the twin I-girder bridges very well in the elastic stage by considering the effective width of the slab. The load transfer paths in such bridges were also discussed on the basis of the test results under un-symmetrical loading.</p>
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Srinivasan, S., and Gopal Srinivasan. "Concrete Bridges Form and Function: Sungai Prai Bridge, Malaysia." In Structures Congress 2008. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/41016(314)124.

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Shiravand, Mahmoud Reza, and Shima Mahboubi. "Seismic behavior of Skew RC Bridges with CFRP piers." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0119.

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<p>This paper aims to investigate the effect of retrofitting piers with CFRP on seismic damage in skew reinforced concrete bridges. To this end, damage limit states of bridge piers in terms of drift ratio are used. Finite element models of a whole bridge are developed for skew angles of 00, 100, 200and 300 and nonlinear time history analysis of the bridges with/without CFRP is performed, using a series of selected ground motion records. Compressive and tensile damage of concrete and drift ratio of bridge piers are estimated, and the results are compared with five damage limit states to specify bridge damage levels under seismic loads. The results show that CFRP strips decrease the compressive damage, the tensile damage, and drift ratio of bridge piers. Moreover, retrofitting piers with CFRP decreases the level of seismic damage of bridge piers.</p>
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Gupta, Tanmay, and Manoj Kumar. "Structural Response of Skew-Curved Concrete Box-Girder Bridges under Eccentric Vehicular Loading." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.1021.

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<p>Concrete box-girders are widely used for modern highway bridges and large urban interchanges. Bridges with ends skewed or horizontally curved girders are becoming more popular now-a-days to incorporate heavy traffic within a very limited space available. Certain geographical situation even demand skew supports in addition to the curved layout of the bridge and results in complex skew-curve geometry of the deck. All the more complexity of such cases increases under eccentric traffic load due to which additional torsion and warping is induced in the bridge. Present study focuses on predicting the bending moment and deflection response of a single cell box-girder bridge for each unique skew/curve/skew-curve combination via 3D finite element analysis using CsiBridge. For the curved and skew-curved bridges the central curvature angle has been varied from 0° to 48° at an interval of 12° while for the skewed and skew-curved bridges the skew angle is swept from 0° to 50° at an interval of 10° in order to investigate the effect of curvature, skewness and skew-curve on flexural and deflection response of box-girder bridge. For these unique simply supported concrete box girder bridges, bending moment and vertical deflection of bridge girder for dead load as well as for IRC Class 70R Tracked wheel load cases are monitored via large parametric study. Results indicate that with increasing skew angle, magnitude of girder deflection and bending moment in general decreases for outer web and inner web. While for heavily curved bridges outer girder response becomes severe, combining the effect of skewness and curvature, it is observed that for highly curved bridges it is better to have skewed abutment to significantly reduce the overall deflection and bending moment response.</p>
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Zobel, Henryk, Wojciech Karwowski, Agnieszka Golubińska, and Thakaa Al-Khafaji. "Fire of steel and composite beam bridges." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0724.

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<p>The problem of bridge fires is growing. Because of a bad experience in Poland, it was decided to improve fire resistance of long span bridge structures, and of cable-stayed bridges in particular. Statistics shows that fire is a real threat to this kind of structure. They also confirm that the worst results of fire are for those with an orthotropic deck rather than with a concrete one. The basic problems to solve are how to predict fire resistance of a particular bridge and how to ensure safety and structural integrity of the bridge structure. Taking into account the fact that bridge standards do not include information relating to fire protection, and fire standards do not determine rules for design, construction and maintenance of such structures, there are no regulations for this problem. Fire scenarios are devoted to buildings, but the thermo-structural behavior of bridges is different.</p>
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Reports on the topic "Bridges Bridges Concrete bridges"

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Wang, Yao, Mirela D. Tumbeva, and Ashley P. Thrall. Evaluating Reserve Strength of Girder Bridges Due to Bridge Rail Load Shedding. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317308.

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This research experimentally and numerically evaluated the reserve strength of girder bridges due to bridge rail load shedding. The investigation included: (1) performing non-destructive field testing on two steel girder bridges and one prestressed concrete girder bridge, (2) developing validated finite element numerical models, and (3) performing parametric numerical investigations using the validated numerical modeling approach. Measured data indicated that intact, integral, reinforced concrete rails participate in carrying live load. Research results culminated in recommendations to evaluate the reserve strength of girder bridges due to the participation of the rail, as well as recommendations for bridge inspectors for evaluating steel girder bridges subjected to vehicular collision.
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Hoehler, M., D. McCallen, and C. Noble. The seismic response of concrete arch bridges (with focus on the Bixby Creek bridge Carmel, California). Office of Scientific and Technical Information (OSTI), June 1999. http://dx.doi.org/10.2172/9869.

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Varma, Amit H., Jan Olek, Christopher S. Williams, Tzu-Chun Tseng, Dan Huang, and Tom Bradt. Post-Fire Assessment of Prestressed Concrete Bridges in Indiana. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317290.

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This project focused on evaluating the effects of fire-induced damage on concrete bridge elements, including prestressed concrete bridge girders. A series of controlled heating experiments, pool fire tests, material tests, and structural loading tests were conducted. Experimental results indicate that the portion of concrete subjected to temperatures higher than 400°C loses significant amounts of calcium hydroxide (CH). Decomposition of CH increases porosity and causes significant cracking. The portion of concrete exposed to temperatures higher than 400°C should be repaired or replaced. When subjected to ISO-834 standard fire heating, approximately 0.25 in. and 0.75 in. of concrete from the exposed surface are damaged after 40 minutes and 80 minutes of heating, respectively. Prestressed concrete girders exposed to about 50 minutes of hydrocarbon fire undergo superficial concrete material damage with loss of CH and extensive cracking and spalling extending to the depth of 0.75–1.0 in. from the exposed surface. These girders do not undergo significant reduction in flexural strength or shear strength. The reduction in the initial stiffness may be notable due to concrete cracking and spalling. Bridge inspectors can use these findings to infer the extent of material and structural damage to prestressed concrete bridge girders in the event of a fire and develop a post-fire assessment plan.
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Ravazdezh, Faezeh, Julio A. Ramirez, and Ghadir Haikal. Improved Live Load Distribution Factors for Use in Load Rating of Older Slab and T-Beam Reinforced Concrete Bridges. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317303.

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This report describes a methodology for demand estimate through the improvement of load distribution factors in reinforced concrete flat-slab and T-beam bridges. The proposed distribution factors are supported on three-dimensional (3D) Finite Element (FE) analysis tools. The Conventional Load Rating (CLR) method currently in use by INDOT relies on a two-dimensional (2D) analysis based on beam theory. This approach may overestimate bridge demand as the result of neglecting the presence of parapets and sidewalks present in these bridges. The 3D behavior of a bridge and its response could be better modeled through a 3D computational model by including the participation of all elements. This research aims to investigate the potential effect of railings, parapets, sidewalks, and end-diaphragms on demand evaluation for purposes of rating reinforced concrete flat-slab and T-beam bridges using 3D finite element analysis. The project goal is to improve the current lateral load distribution factor by addressing the limitations resulting from the 2D analysis and ignoring the contribution of non-structural components. Through a parametric study of the slab and T-beam bridges in Indiana, the impact of selected parameters on demand estimates was estimated, and modifications to the current load distribution factors in AASHTO were proposed.
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Pevey, Jon M., William B. Rich, Christopher S. Williams, and Robert J. Frosch. Repair and Strengthening of Bridges in Indiana Using Fiber Reinforced Polymer Systems: Volume 1–Review of Current FRP Repair Systems and Application Methodologies. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317309.

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For bridges that are experiencing deterioration, action is needed to ensure the structural performance is adequate for the demands imposed. Innovate repair and strengthening techniques can provide a cost-effective means to extend the service lives of bridges efficiently and safely. The use of fiber reinforced polymer (FRP) systems for the repair and strengthening of concrete bridges is increasing in popularity. Recognizing the potential benefits of the widespread use of FRP, a research project was initiated to determine the most appropriate applications of FRP in Indiana and provide recommendations for the use of FRP in the state for the repair and strengthening of bridges. The details of the research are presented in two volumes. Volume 1 provides the details of a study conducted to (1) summarize the state-of-the-art methods for the application of FRP to concrete bridges, (2) identify successful examples of FRP implementation for concrete bridges in the literature and examine past applications of FRP in Indiana through case studies, and (3) better understand FRP usage and installation procedures in the Midwest and Indiana through industry surveys. Volume 2 presents two experimental programs that were conducted to develop and evaluate various repair and strengthening methodologies used to restore the performance of deteriorated concrete bridge beams. The first program investigated FRP flexural strengthening methods, with a focus on adjacent box beam bridges. The second experimental program examined potential techniques for repairing deteriorated end regions of prestressed concrete bridge girders. Externally bonded FRP and near-surface-mounted (NSM) FRP were considered in both programs.
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Rich, William B., Robert R. Jacobs, Christopher S. Williams, and Robert J. Frosch. Repair and Strengthening of Bridges in Indiana Using Fiber Reinforced Polymer Systems: Volume 2–FRP Flexural Strengthening and End Region Repair Experimental Programs. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317310.

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For bridges that are experiencing deterioration, action is needed to ensure the structural performance is adequate for the demands imposed. Innovate repair and strengthening techniques can provide a cost-effective means to efficiently and safely extend the service lives of bridges. The use of fiber reinforced polymer (FRP) systems for the repair and strengthening of concrete bridges is increasing in popularity. Recognizing the potential benefits of the widespread use of FRP, a research project was initiated to determine the most appropriate applications of FRP in Indiana and provide recommendations for the use of FRP in the state for the repair and strengthening of bridges. The details of the research are presented in two volumes. Volume 1 provides the details of a study conducted to (i) summarize the state-of-the-art for the application of FRP to concrete bridges, (ii) identify successful examples of FRP implementation for concrete bridges in the literature and examine past applications of FRP in Indiana through case studies, and (iii) better understand FRP usage and installation procedures in the Midwest and Indiana through industry surveys. Volume 2 presents two experimental programs that were conducted to develop and evaluate various repair and strengthening methodologies used to restore the performance of deteriorated concrete bridge beams. The first program investigated FRP flexural strengthening methods, with focus placed on adjacent box beam bridges. The second experimental program examined potential techniques for repairing deteriorated end regions of prestressed concrete bridge girders. Externally bonded FRP and near-surface-mounted (NSM) FRP were considered in both programs.
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Covino, Bernard S. Jr, Stephen D. Cramer, Sophie J. Bullard, Gordon R. Holcomb, James H. Russell, W. Keith Collins, Martin H. Laylor, and Curtis B. Cryer. Performance of Zinc Anodes for Cathodic Protection of Reinforced Concrete Bridges. Office of Scientific and Technical Information (OSTI), March 2002. http://dx.doi.org/10.2172/804079.

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Groeneveld, Andrew B., Stephanie G. Wood, and Edgardo Ruiz. Estimating Bridge Reliability by Using Bayesian Networks. Engineer Research and Development Center (U.S.), February 2021. http://dx.doi.org/10.21079/11681/39601.

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As part of an inspection, bridge inspectors assign condition ratings to the main components of a bridge’s structural system and identify any defects that they observe. Condition ratings are necessarily somewhat subjective, as they are influenced by the experience of the inspectors. In the current work, procedures were developed for making inferences on the reliability of reinforced concrete girders with defects at both the cross section and the girder level. The Bayesian network (BN) tools constructed in this work use simple structural m echanics to model the capacity of girders. By using expert elicitation, defects observed during inspection are correlated with underlying deterioration mechanisms. By linking these deterioration mechanisms with reductions in mechanical properties, inferences on the reliability of a bridge can be made based on visual observation of defects. With more development, this BN tool can be used to compare conditions of bridges relative to one another and aid in the prioritization of repairs. However, an extensive survey of bridges affected by deterioration mechanisms is needed to confidently establish valid relationships between deterioration severity and mechanical properties.
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Fuchs, Alan, Tathagata Acharya, Luis Cabrales, Jesse Bergkamp, and Nyakundi M. Michieka. A New Materials and Design Approach for Roads, Bridges, Pavement, and Concrete. Mineta Transportation Institute, February 2020. http://dx.doi.org/10.31979/mti.2019.1858.

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Seok, Seungwook, Faezeh Ravazdezh, Ghadir Haikal, and Julio A. Ramirez. Strength Assessment of Older Continuous Slab and T-Beam Reinforced Concrete Bridges. Purdue University, 2020. http://dx.doi.org/10.5703/1288284316924.

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