Relevant bibliographies by topics / Prestressed concrete beams Prestressed concrete beams Flexure

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Prestressed concrete beams Prestressed concrete beams Flexure'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Prestressed concrete beams Prestressed concrete beams Flexure"

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Li, Feng Ge, and Rong Li. "Theoretical Analysis of Natural Vibration Frequency for Unbonded Prestressed Concrete Beams." Advanced Materials Research 594-597 (November 2012): 882–85. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.882.

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This papers deals with the study of the influence of prestress force on the natural frequencies for unbonded prestressed concrete beams. A total of 5 unbounded prestressed concrete simply support beams were constructed and tested. The test results show that the prestress force has little effect on the nature frequencies of unbonded prestressed concrete beams. A model of variable stiffness is proposed to calculate the natural frequencies of prestressed concrete beams with unbonded tendons, which assumed that the flexural rigidity of the beam is changing when beams vibrating. The calculate results show that the calculation results by the proposed model agree well with experimental ones.
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Wang, Bo, and Guang Xin Men. "Study of Flexural Property of Prestressed Carbonfiber-Reinforced Plastics (CFRP) Reinforced Concrete Beams." Applied Mechanics and Materials 351-352 (August 2013): 1503–8. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.1503.

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To study the effect of prestress level on beam for its flexural property, through comparing of the stress property of non-reinforced beam, non-prestressed fiber beam, and prestressed fiber beam. The experimental results show that non-prestressed fiber makes little difference in improving beams flexural property, while prestressed fiber has improved beams cracking load, yield load, bending rigidity greatly.
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Liang, Jiong Feng, Jian Bao Wang, and Jian Ping Li. "Experimental Research on Bending Performance of Concrete Beams Reinforced with CFRP-PCPs Composite Rebars." Applied Mechanics and Materials 438-439 (October 2013): 804–6. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.804.

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The flexural behavior of concrete beams reinforced with CFRP-PCPs composite rebars was studied. Experimental results showed that the deflection of beams reinforced with highly prestressed prisms is at service loads coMParable to deflection of steel reinforced beam. Flexural cracks of CFRP-PCPs composite rebars reinforced beams are hairline before prism cracking, and widened after the prism cracking. When the concrete beam was reinforced with the prestressed concrete prisms, the crack width decreased as the prestress in the prism increased.
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Badawy, Amr H., Ahmed Hassan, Hala El-Kady, and L. M. Abd-El Hafez. "The Behavior of Reinforced and Pre-Stressed Concrete Beams under Elevated Temperature." International Journal of Engineering Research in Africa 47 (March 2020): 15–30. http://dx.doi.org/10.4028/www.scientific.net/jera.47.15.

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The behavior of unbounded post tension and reinforced concrete beams under elevated temperature was presented. The experimental work was consisted of two major phases. In the first phase, the objective was studying the mechanical performance of prestressed beam, prestressed beam with steel addition and reinforced concrete beams respectively were studied. In the second phase, the residual mechanical performance of prestressed beam, prestressed beam with steel addition and reinforced concrete beams under elevated 400oC, for 120 minutes durations. The failure mechanisms, ultimate load capacity, and deflection at critical sections were monitored. The numerical prediction of the flexural behavior of the tested specimens is presented in this paper. This includes a comparison between the numerical and experimental test results according to ANSYS models. The results indicate that the prestressed beam with steel addition and reinforced concrete beams had higher resistance to beams under elevated 400oC than that of prestressed concrete beam in terms of ultimate capacity. It is also shown that the reinforced concrete beams have higher resistance to beams under elevated temperature than that of prestressed beam, prestressed beam with steel addition.
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Kim, Yail J., Mark F. Green, and R. Gordon Wight. "Flexural behaviour of reinforced or prestressed concrete beams including strengthening with prestressed carbon fibre reinforced polymer sheets: application of a fracture mechanics approach." Canadian Journal of Civil Engineering 34, no. 5 (May 1, 2007): 664–77. http://dx.doi.org/10.1139/l06-161.

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This paper describes the application of a fracture mechanics model (Hillerborg 1990) to concrete structures, including strengthening with prestressed carbon fibre reinforced polymer (CFRP) sheets. One benefit of the proposed fracture mechanics model, consisting of a unique combined stress–strain response of concrete, is that it includes the size effect of reinforced concrete beams; however, its application and validation have not been fully investigated. The proposed model is reviewed and further developed to cover prestressed concrete beams including a beam strengthened with a prestressed CFRP sheet. To evaluate the model, various approaches such as finite element analysis, a strength-based model, a conventional design method, and experimental results are compared with the fracture mechanics model. The size-dependent parameter (ε1) significantly affects the predicted behaviour of reinforced or prestressed concrete beams, depending on the contribution of reinforcement. Based on the current assessment, ε1 = 0.005 is recommended as an upper limit for normal strength concrete.Key words: carbon fibre reinforced polymer sheet, flexure, fracture mechanics, prestressed concrete beam, reinforced concrete beam, strengthening, size effect.
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Deng, Lang Ni, Peng Zhang, and Hua Chen. "Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP Plates：Comparisons of Bonded and Unbonded Method." Key Engineering Materials 480-481 (June 2011): 283–87. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.283.

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In this study, a total of 5 CFRP-strengthened reinforced concrete beams were tested in flexure based on the independent development prestressing anchorage system. The various variables included bonding or no bonding of the CFRP and the amount of prestressing. The experiments consisted of one control beam, two prestressed CFRP-unbonded beams, and two prestressed CFRP-bonded beams, all the beams were subjected to four-point bending tests. The ultimate load, deformation, and CFRP strain were examined. The aim of this investigation was to study the flexural performance of reinforced concrete members strengthened using CFRP plates, employing different CFRP bonding and prestressing methods. The failure mode of the prestressed CFRP-plated beams was not debonding, but concrete crushing or FRP rupture. For the reinforced concrete members strengthened with externally bonded prestressed CFRP plates, after the debonding of the CFRP plates that occurred in the bonded cases, the behaviour of the bonded CFRP-plated beams changed to that of the unbonded CFRP-plated beams due to the effect of the anchorage system. The ductility indices of the beams in an unbonded system were less than that of those in a bonded system.
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Cai, Jiang Yong, Zhi Feng Tu, Su Min Gong, and Li Zhuang. "Evaluation of Flexural Performance for Prestressed Concrete Beams with FRP Tendons." Advanced Materials Research 383-390 (November 2011): 3128–33. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3128.

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Prestressed concrete beams with vertically distributed FRP tendons possess some flexural performance obviously different from prestressed concrete beams with steel tendons. This paper provides a complete theoretical approach to analyze and evaluate the flexural behavior of prestressed concrete beams with FRP tendons. Calculation and analysis results show that a prestressed concrete beam with FRP tendons designed at balanced ratio reaches the maximum of its deformability. The increase of prestressing ratio and number of reinforcement layer will increase, respectively, its moment capacity but simultaneously decrease its deformability.
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Yu, Jian Jun, and Lian Guang Wang. "Nonlinear Analysis of Prestressed Cold-Formed U-Shaped Steel and Concrete Composite Beams." Advanced Materials Research 594-597 (November 2012): 749–52. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.749.

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Cold-formed U-shaped steel and concrete composite beam is a kind of composite beam which the steel and the concrete are integrated by welding connections on the cold-formed U-shaped steel and then pouring concrete on the steel. Now, many experts and scholars have carried out many experimental research and theoretical analysis about it. But, prestressed Cold-formed U-shaped steel and concrete composite beams have not been studied. Based on the structure , the nonlinear analysis mode of prestressed cold-formed U-shaped steel and concrete composite beams is proposed, the calculating program is researched. The calculating results show that the bearing capacity of composite beam increases with the increments of thickness of steel plate and concrete strength, and the thickness of steel plate has a larger effect than the width of the flange plate of concrete, applying prestress can enhance the bearing capacity and flexural rigidity of the composite beam.
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Shen, Jie, Ismail Yurtdas, Cheikhna Diagana, and Alex Li. "Influence of Compressive Strength of Self-Compacting Concrete on Shear Behavior of Prestressed RC Beams." Applied Mechanics and Materials 147 (December 2011): 14–18. http://dx.doi.org/10.4028/www.scientific.net/amm.147.14.

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The shear behavior of prestressed self-compacting concrete (SCC) beams has been investigated in this study. The effect of compressive strength of SCC on the shear strength has been taken into account in test program. Based on the experimental data, the failure mechanism of the prestressed SCC beams was discussed and the shear transfer mechanism of the RC beam after the flexure-shear cracking was also analyzed.
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Yang, Jun, Tong Guo, and Aiqun Li. "Experimental investigation on long-term behavior of prestressed concrete beams under coupled effect of sustained load and corrosion." Advances in Structural Engineering 23, no. 12 (May 11, 2020): 2587–96. http://dx.doi.org/10.1177/1369433220919067.

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Prestressed concrete beams are widely used in construction, while they may be attacked by the corrosion medium during the service. Past research works show that coupled effect of high stress and corrosion can significantly deteriorate the performance of prestressed concrete structures. This article presents an experimental investigation on long-term behavior of prestressed concrete beams under the coupled effect of sustained load and corrosion. During the accelerated corrosion process, six prestressed concrete beams were subjected to different levels of sustained loads, and time-dependent prestress loss and concrete stains were recorded and analyzed. It is observed that the local corrosion (i.e. pitting corrosion) of the steel strands was significantly affected by the sustained load level, and the coupled effect led to more serious damage on the beams than individual sustained load or corrosion. Bending loads were finally applied to investigate the influence of corrosion on flexural capacities of these beams. It was found that the flexural capacities and failure mode of the beams were significantly influenced by corrosion. Meanwhile, the corrosion has more significant effect on tension strength of strands rather than bond strength.
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Dissertations / Theses on the topic "Prestressed concrete beams Prestressed concrete beams Flexure"

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Chan, Ka-ho Enoch. "Experimental and numerical studies of concrete beams prestressed with unbonded tendons." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40988004.

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Saeed, Yasir Matloob. "Behavior of Prestressed Concrete Beams with CFRP Strands." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/2726.

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The high cost of repairing reinforced or prestressed concrete structures due to steel corrosion has driven engineers to look for solutions. Much research has been conducted over the last two decades to evaluate the use of Fiber Reinforced Polymers (FRPs) in concrete structures. Structural engineering researchers have been testing FRP to determine their usability instead of steel for strengthening existing reinforced concrete structures, reinforcing new concrete members, and for prestressed concrete applications. The high strength-to-weight ratio of FRP materials, especially Carbon FRP (CFRP), and their non-corrosive nature are probably the most attractive features of FRPs. In this study, an experimental program was conducted to investigate the flexural behavior of prestressed concrete beams pre-tensioned with CFRP strands. The bond characteristics were examined by means of experimentally measuring transfer length, flexural bond length, and bond stress profiles. A total of four rectangular beams pre-tensioned with one 0.5-in. diameter CFRP strand were fabricated and tested under cyclic loading for five cycles, followed by a monotonically increasing load until failure. In investigating bond properties, the experimental results were compared to the equations available in the literature. The results from the four flexural tests showed that the main problem of CFRP strands, in addition to their liner-elastic tensile behavior, was lack of adequate bonding between FRP and concrete. Poor bonding resulted in early failure due to slippage between FRPs and concrete. As a result, a new technique was developed in order to solve the bonding issues and improve the flexural response of CFRP prestressed concrete beams. The new technique involved anchoring the CFRP strands at the ends of the concrete beams using a new "steel tube" anchorage system. It was concluded that the new technique solved the bond problem and improved the flexural capacity by about 46%. A computer model was created to predict the behavior of prestressed beams pre-tensioned with CFRP. The predicted behavior was compared to the experimental results. Finally, the experimental results were compared to the behavior of prestressed concrete beams pre-tensioned with steel strands as generated by the computer model. The CFRP beams showed higher strength but lower ductility.
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Chan, Ka-ho Enoch, and 陳家灝. "Experimental and numerical studies of concrete beams prestressed with unbonded tendons." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40988004.

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Maghsoudi, Ali Akbar. "The behaviour of flanged, and composite prestressed concrete beams under torsion and flexure." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237253.

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Ali, Alameer. "Behaviour of Prestressed Ultra-High Performance Concrete I-Beams Subjected to Shear and Flexure." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24280.

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Ultra-high performance concrete (UHPC) is a new type of concrete developed by selecting the particle sizes and gradation in the nano- and micro-scales targeting the highest possible packing. The resulting concrete with very high density is called UHPC. UHPC has very low permeability and hence it is very highly durable compared to traditional or high performance concrete (HPC). Micro reinforcement of UHPC by random distributed steel-synthetic fibers results in superior mechanical properties such as very high compressive and tensile strengths, high ductility, and high fatigue resistance. The material selection and early age curing processes, use of fiber reinforcement, and very high quality in production resulted in a very high initial cost of UHPC structures. In order to enable the mass production and cost effective use of the material, performance based design and optimization of UHPC structural members are required. This study is part of an NRC Canada research project to develop innovative, cost effective, and sustainable bridge structural systems using UHPC and other innovative materials. In this study, the estimation of shear and flexural capacities using the available approaches of international design guidelines of UHPC structures are comprehensively compared to a proposed truss models, linear and nonlinear finite element models. Several design trials intended to allow for an optimized use of the materials and a maximum load capacity was conducted for simply supported beams with one or two external loads, and having rectangular or I cross sections. Linear and non-linear finite element models are developed and their results were compared to the available international design recommendations. Truss models are proposed to simplify the stress analysis in the shear zone of the prestressed UHPC beams. It is found that prestressed UHPC I-beam section gives the highest possible load capacity with minimum use of materials. The study shows that for the case of no stirrups, massive flexure and shear cracks initiate and propagate suddenly where a diagonal shear crack is fully developed and sudden collapse may expected. The proposed truss model gives very good match to nonlinear finite element analysis results for almost all the truss members. The results are significantly improved when additional struts are considered for both cases of beams with or without shear reinforcement. The study shows the importance of future experimental investigatinons to calibrate the proposed models.
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Agapay, Alison. "Test of prestressed concrete T-beams retrofitted for shear and flexure using carbon fiber reinforced polymers." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/6991.

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In 1997, a precast prestressed T-Beam in the Ala Moana Shopping Center Parking Garage was strengthened in flexure using carbon fiber reinforced polymer (CFRP). When the old parking garage was demolished in June 2000 to make way for a new multilevel parking garage, this beam and two control beams were salvaged and transported to the University of Hawaii at Manoa Structural Testing Laboratory for testing. This thesis presents testing of the strengthened beam and a control beam. It also describes the retrofit procedures during field application of the CFRP strips, beam recovery, and preparation for laboratory testing. In addition, a step by step analysis of the predicted strengths is presented. To ensure flexure failure, the beams were retrofitted in shear with CFRP. Two types of wrapping schemes were used and anchorage was provided for the shear retrofit. The left half of each beam was retrofitted with 3" wide double layer CFRP stirrups. The right half of each beam was retrofitted with 12" wide CFRP sheets. After flexural testing, each half of each beam was recovered for shear testing. Flexural test results indicate that the CFRP strengthening provided a 71% increase compared with the control specimen without reducing the beam's ductility. The flexural capacity of the strengthened beam was 21% greater than predicted by ACI 440R-02. The failure shear strength of the beams with CFRP sheets was slightly greater than the ACI 440R-02 prediction. The shear tests indicated delamination of the CFRP stirrups and sheets occurring prior to the maximum shear load. Anchorage at the top and bottom of the beam web helped prevent complete delamination of the CFRP; however further anchorage development is required to maximize the strength of the CFRP shear retrofit.
xi, 245 leaves
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Boehm, Kurtis McKinley Barnes Robert W. "Structural performance of self-consolidating concrete in AASHTO type I prestressed girders." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Civil_Engineering/Thesis/Boehm_Kurtis_25.pdf.

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Karimnassaee, Ali 1959. "FLEXURAL BEHAVIOR OF LIGHTLY REINFORCED UNBONDED POST-TENSIONED CONCRETE BEAMS." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275510.

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Gopal, Pritiv Kumar. "Flexural behaviour of flanged concrete beams prestressed with unbonded steel or FRP tendons." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/MQ54454.pdf.

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ARAUJO, AELLINGTON FREIRE DE. "EXPERIMENTAL STUDY ON THE FLEXURAL STRENGTH OF CONCRETE BEAMS PRESTRESSED WITH SYNTHETIC TENDONS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1997. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1927@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
Nos últimos anos a protensão externa tem sido empregada tanto na recuperação e reforço de estruturas existentes quanto na concepção de novas estruturas. A protensão externa pode ser feita com cabos de aço ou com cabos sintéticos. Dentre esses, podem-se destacar os cabos Parafil, cujo núcleo é constituído de fibras kevlar. Essas fibras têm alta resistência (3700MPa), alto módulo de elasticidade (126000MPa) e excelente resistência à corrosão. Neste trabalho é feito um estudo do comportamento de vigas protendidas com cabos externos tipo Parafil, onde se identificam os principais fatores que influenciam a resistência à flexão através de um estudo paramétrico, utilizando um modelo computacional desenvolvido por Krüger (1989) e Campos (1993). Foram ensaiadas experimentalmente cinco vigas protendidas com dois cabos externos, considerando a taxa de armadura passiva e o tipo de carregamento como principais variáveis. Os resultados mostram que a taxa de armadura passiva, o tipo de carregamento, o módulo de elasticidade do reforço, a resistência do concreto e o nível de protensão inicial (protensão efetiva) têm um efeito significante sobre a resistência à flexão das vigas. Os resultados teóricos obtidos através de equações desenvolvidas para o caso de cabos de aço, mostram, de um modo geral, bons resultados para o caso de cabos Parafil.
External prestressing has been used either in new structures or in the repair and rehabilitation of existing ones. The use of steel tendons has been the most usual solution, but synthetic cables have also been used over the last years. One example of these cables is a parallel-lay rope known as Parafil, which is made from the high strength (3700 MPa), high modulus (126000 MPa) and corrosion resistant fiber commercially known as Kevlar. An investigation on the behavior of beams prestressed with external Parafil tendons is conducted with the purpose of studying the flexural strength of these beams. The main variables which affect the behavior of the beams are firstly identified through a parametric analysis using an existing computational model based on the finite element method. Secondly, an experimental investigation of five simple supported beams, in which the non-prestressed reinforcement and type of loading are the main variables, is presented. The results show that the non-prestressed reinforcement, type of loading, elastic modulus of the tendons, effective prestressing force level and concrete strength have a significant affect on the flexural strength of the beams. The comparison between the experimental results and those obtained from equations developed for steel tendons, shows that these equations could also be used for beams prestressed with synthetic cables.
En los últimos años la protensión externa há sido empleada tanto en la recuperación y refuerzo de extructuras existentes como en la concepción de nuevas extructuras. La protensión externa puede ser realizada con cables de acero o con cables sintéticos. Dentro de estos, se pueden destacar los cables Parafil, cuyo núcleo está constituido de fibras kevlar. Esas fibras tienen alta resistencia (3700MPa), alto módulo de elasticidad (126000MPa) y excelente resistencia a la corrosión. En este trabajo se realiza un estudio del comportamientode vigas protendidas con cables externos tipo Parafil, donde se identifican los principales factores que tienen influencia sobre la resistencia a la flexión, a través de un estudio paramétrico, utilizando un modelo computacional desarrollado por Krüger (1989) y Campos (1993). Fueron ensayadas cinco vigas protendidas con dos cables externos, considerando como principales variables la tasa de armadura pasiva y el tipo de carga. Los resultados muestran que la tasa de armadura pasiva, el tipo de carga, el módulo de elasticidad del refuerzo, la resistencia del concreto y el nível de protensión inicial (protensión efectiva) tienen un efecto significativo sobre la resistencia a la flexión de las vigas. Los resultados teóricos obtenidos a través de las ecuaciones desarrolladas para el caso de cables de acero, muestran, de un modo general, buenos resultados para el caso de cables Parafil.
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Books on the topic "Prestressed concrete beams Prestressed concrete beams Flexure"

1

Muller, J. F. Fatigue of prestressed concrete beams with inclined strands. Brisbane: University ofQueensland, Dept. of Civil Engineering, 1992.

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Zerna, Wolfgang. Spannbetonträger: Theorie und Berechnungsgrundlagen. Berlin: Springer-Verlag, 1987.

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Brooks, Eric W. Prestressed concrete bridge beams with microsilica admixture: Final report. Salem, Or: Oregon Dept. of Transportation, Research Unit, 1998.

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Itani, Rafik Y. Design of prestressed concrete girders without end blocks. [Olympia?]: Washington State Dept. of Transportation, Planning, Research and Public Transportation Division, 1986.

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Nicholson, B. A. Simple bridge design using prestressed beams: An introduction to the design of simply-supported bridge decks using prestressed concrete bridge beams. Leicester: Prestressed Concrete Association, 1997.

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Zhongguo, John. Single lane live load distribution factor for decked precast/prestressed concrete girder bridges. Juneau, AK: Alaska Department of Transportation, 2005.

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Belarbi, Abdeldjelil, Mina Dawood, Prakash Poudel, Mahmoud Reda, Hamidreza Tahsiri, Bora Gencturk, Sami H. Rizkalla, and Henry G. Russell. Design of Concrete Bridge Beams Prestressed with CFRP Systems. Washington, D.C.: Transportation Research Board, 2019. http://dx.doi.org/10.17226/25582.

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Kiang-Hwee, Tan, ed. Concrete beams with openings: Analysis and design. Boca Raton, Fla: CRC Press, 1999.

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Rosa, Michael A. Improving predictions for camber in precast, prestressed concrete bridge girders. [Olympia, Wash.]: Washington State Dept. of Transportation, 2007.

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Byle, Kenneth Arlan. Time-dependent deformation behavior of prestressed high performance concrete bridge beams. [Austin, Tex.]: Center for Transportation Research, Bureau of Engineering Research, University of Texas at Austin, 1998.

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Book chapters on the topic "Prestressed concrete beams Prestressed concrete beams Flexure"

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Pham, T. M., T. D. Le, and H. Hao. "Flexural Performance of Precast Segmental Concrete Beams Prestressed with CFRP Tendons." In Lecture Notes in Civil Engineering, 655–65. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8079-6_62.

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Dolan, Charles W., and H. R. Hamilton. "Composite Beams." In Prestressed Concrete, 283–300. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97882-6_10.

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Dolan, Charles W., and H. R. Hamilton. "Continuous Slabs and Beams." In Prestressed Concrete, 243–82. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97882-6_9.

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Toniolo, Giandomenico, and Marco di Prisco. "Prestressed Beams." In Reinforced Concrete Design to Eurocode 2, 711–833. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52033-9_10.

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Kong, F. K., and R. H. Evans. "Prestressed concrete continuous beams." In Reinforced and Prestressed Concrete, 380–400. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4899-7134-0_10.

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Kong, F. K., and R. H. Evans. "Prestressed concrete simple beams." In Reinforced and Prestressed Concrete, 333–79. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4899-7134-0_9.

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Kong, F. K., and R. H. Evans. "Reinforced concrete beams—the ultimate limit state." In Reinforced and Prestressed Concrete, 85–155. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4899-7134-0_4.

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Kong, F. K., and R. H. Evans. "Reinforced concrete beams—the serviceability limit states." In Reinforced and Prestressed Concrete, 156–97. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4899-7134-0_5.

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Kirsch, Uri. "How to Optimize Prestressed Concrete Beams." In Guide to Structural Optimization, 75–92. New York, NY: American Society of Civil Engineers, 1997. http://dx.doi.org/10.1061/9780784402207.ch05.

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Campbell, T. I. "Tendon Stress in Unbonded Partially Prestressed Concrete Beams." In Progress in Structural Engineering, 185–98. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3616-7_13.

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Conference papers on the topic "Prestressed concrete beams Prestressed concrete beams Flexure"

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Sharma, Anupam, Amit Vishwakarma, and S. S. Kushwah. "Study of the flexural strengthening of RC concrete and prestressed concrete beams." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON SUSTAINABLE MATERIALS AND STRUCTURES FOR CIVIL INFRASTRUCTURES (SMSCI2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5127153.

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ZOU, P. X. W., and S. T. SMITH. "TIME-DEPENDENT FLEXURAL CRACK WD3TH PREDICTION OF CONCRETE BEAMS PRESTRESSED WITH CFRP TENDONS." In Proceedings of the Sixth International Symposium on FRP Reinforcement for Concrete Structures (FRPRCS–6). World Scientific Publishing Company, 2003. http://dx.doi.org/10.1142/9789812704863_0098.

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Low, Hin Foo, Sih Ying Kong, and Daniel Kong. "A Review on Prestressed Transfer Plate Analysis and Design." 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.2018.1037.

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<p>Prestressed transfer plate consists of a thick cast in-situ post-tensioned concrete slab supporting multi-storey shear walls at building transition level. Compared to conventional reinforced concrete transfer beams, it offers savings in concrete volume of 10-15%, cuts steel reinforcement content by 35-50% and significantly reduces formwork usage which eventually helps to achieve lower carbon footprint for a more sustainable transfer floor construction. The design of prestressed transfer plates is complicated owing to its two-way bending behaviour and irregular load path from reactions of numerous shear walls. This paper elaborates the analysis of prestressed transfer plates and discusses their interaction effect with shear walls. It also explains the design of interfacing shear for thick plate construction with multi-layer casting in addition to various design considerations including flexural and punching shear design based on relevant codes of practice.</p>
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Scott, James D., Robert J. Peterman, B. Terry Beck, Aaron A. Robertson, Kyle A. Riding, and Chih-Hang John Wu. "Determining the Remaining Prestress Force in a Prestressed Concrete Railroad Tie Through Loading in Direct Tension." In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6168.

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Extensive research has been conducted by the research team in recent years to determine the prestressing steel and concrete properties that must be provided to ensure that the transfer length of a prestressed concrete railroad tie is shorter than the distance from the edge of the tie to the rail seat. In addition, a significant of amount of data has been collected that indicates high bonding stresses can produce longitudinal splitting cracks along the reinforcement. In a study of how prestressing steel and concrete properties relate to a ties propensity for longitudinal cracking, existing ties that have performed well in track for over 25 years without issues are being evaluated. One parameter of interest that affects the bonding stress is the amount of prestress force in a railroad tie, which is unknown for the existing ties being evaluated. The current paper focuses on a new method that was developed for determining the remaining prestress force in a tie. In a previous method for determining the prestress force, ties were first loaded in four-point bending to initiate flexural cracking. The crack opening displacement was measured in order to determine the applied load required to reopen the crack. Using this load and the cross-sectional parameters at the location of the crack, the prestress force in the tie can be calculated using static equilibrium. The issue with this method is that as a tie is being loaded and the crack propagates, there is a continuous change in the stiffness of the cross-section. This results in the load versus crack opening displacment curve being overly rounded. This increases the error when determining the load required to reopen the crack, and increases the uncertainty of the calculated prestress force. The new test method eliminates the problems associated with flexural testing by loading the ties longitudinally in tension. In the new proposed experimental method, ties that have been pre-cracked in the center are pulled in tension. Similar to the previous method, the crack opening displacement is measured while the tie is loaded. For the crack to fully open, the applied load must exceed the prestress force holding the crack closed. Prior to the crack opening, the applied load is resisted by the composite section of concrete and prestressing tendons. Once the crack as fully opened, the applied load is resisted by the prestessing tendons only. This creates two distinctly linear portions of the load versus crack opening displacement curve, one prior to the crack opening, and one after. The beginning of the linear portion post-crack opening marks a very clear upper bound for the amount of prestressing force in a tie. This method can estimate the remaining prestress force in a tie with much greater accuracy than the previous method, and eliminates the need of the cross-sectional parameters at the crack location. To verify this method, tests were first conducted on a smaller scale with prismatic beams with a known initial prestressing force. Then the method was applied to a full scale existing tie to determine the remaining prestress force. Results are presented for testing of both the prismatic beams, and the full scale tie.
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Jeon, Chi-Ho, and Chang-Su Shim. "Experimental study on PSC beams with various conditions of corrosion." 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.2021.0148.

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<p>There have been many reports released on failure of prestressing steels due to corrosion. This is taken seriously in that it can cause sudden collapse of the structure. In this paper, experimental investigation was performed to evaluate the performance of prestressed concrete beams. The strands of the specimens were electro-chemically corroded with Impressed Current Method (ICM). Location of corrosion, degree of corrosion, and the number of corroded strands are the parameters considered herein. The test result shows strength reduction of a centrally corroded PSC beam, but not in the other location near anchorages. Based on the analytical solutions using mechanical models of corroded strands with different pit depth, the flexural strength of the PSC beams was assessed. A procedure to assess the influence of the corroded strand on the behaviour of a PSC beam is suggested.</p>
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Kim, Min Sook, and Young Hak Lee. "Evaluation of Deflections of Prestressed Concrete Beams." In The World Congress on Civil, Structural, and Environmental Engineering. Avestia Publishing, 2016. http://dx.doi.org/10.11159/icsenm16.108.

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Lai, Chee K., and Stephen Hubbard. "Prestressed Concrete Box Beams with Curved Soffits." In Structures Congress 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40492(2000)184.

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Metwally, Ahmed El, and Robert E. Loov. "Prestressed Concrete Beams with Corrugated Steel Webs." In Composite Construction in Steel and Concrete IV Conference 2000. Reston, VA: American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40616(281)8.

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Burgoyne, C. J. "Design of Prestressed Concrete Beams Using Expert Systems." In 4th International Symposium on Automation and Robotics in Construction. International Association for Automation and Robotics in Construction (IAARC), 1987. http://dx.doi.org/10.22260/isarc1987/0035.

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Prado, Lisiane Pereira, Rafaella Moreira Lima Godim Resende, Carol Ferreira Rezende Santos, Yagho de Souza Simões, and Rafaela Derêncio Alvarenga. "PARAMETRICAL ANALYSIS OF WAREHOUSE PRESTRESSED PRECAST CONCRETE BEAMS." In XXXVIII Iberian-Latin American Congress on Computational Methods in Engineering. Florianopolis, Brazil: ABMEC Brazilian Association of Computational Methods in Engineering, 2017. http://dx.doi.org/10.20906/cps/cilamce2017-0683.

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Reports on the topic "Prestressed concrete beams Prestressed concrete beams Flexure"

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Collins, Travis, and Patrick J. Fortney. Estimating in situ Flexural Strength of Heat-Affected Prestressed Concrete Beams Using Constituent Material Models. Precast/Prestressed Concrete Institute, 2008. http://dx.doi.org/10.15554/pci.rr.comp-011.

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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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Cojocaru, Razvan. Lifting Analysis of Precast Prestressed Concrete Beams. Precast/Prestressed Concrete Institute, 2012. http://dx.doi.org/10.15554/pci.rr.misc-002.

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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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Saeed, Yasir. Behavior of Prestressed Concrete Beams with CFRP Strands. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2722.

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Kaufman, M., and J. Ramirez. Structural Behavior of High Strength Concrete Prestressed I-Beams, Volume II : Final Report. West Lafayette, IN: Purdue University, 1988. http://dx.doi.org/10.5703/1288284314608.

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Kaufman, M., and J. Ramirez. Structural Behavior of High Strength Concrete Prestressed I-Beams, Volume II: Executive Summary. West Lafayette, IN: Purdue University, 1988. http://dx.doi.org/10.5703/1288284314145.

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Abdalla, O., J. Ramirez, and Robert Lee. Strand Debonding in Pretensioned Beams - Precast Prestressed Concrete Bridge Girders with Debonded Strands - Continuity Issues. West Lafayette, IN: Purdue University, 1993. http://dx.doi.org/10.5703/1288284314206.

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Kaufman, M., and J. Ramirez. Production and Engineering Properties of Concrete Used in Precast Prestressed I-Beams for the State of Indiana, Volume I. West Lafayette, IN: Purdue University, 1988. http://dx.doi.org/10.5703/1288284314143.

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Kaufman, M., and J. Ramirez. Production and Engineering Properties of Concrete Used in Precast Prestressed I-Beams for the State of Indiana, Volume I: Executive Summary. West Lafayette, IN: Purdue University, 1988. http://dx.doi.org/10.5703/1288284314144.

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