Computers and Concrete

  • 제3권1호
  • /
  • Pages.65-77
  • /
  • 2006
  • /
  • 1598-8198(pISSN)
  • /
  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Finite element analysis of shear critical prestressed SFRC beams

  • Thomas, Job (Department of Civil Engineering, Indian Institute of Science) ;
  • Ramaswamy, Ananth (Department of Civil Engineering, Indian Institute of Science)
  • 투고 : 2005.09.23
  • 심사 : 2006.02.15
  • 발행 : 2006.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study reports the details of the finite element analysis of eleven shear critical partially prestressed concrete T-beams having steel fibers over partial or full depth. Prestressed concrete T-beams having a shear span to depth ratio of 2.65 and 1.59 and failing in the shear have been analyzed using 'ANSYS'. The 'ANSYS' model accounts for the nonlinear phenomenon, such as, bond-slip of longitudinal reinforcements, post-cracking tensile stiffness of the concrete, stress transfer across the cracked blocks of the concrete and load sustenance through the bridging of steel fibers at crack interface. The concrete is modeled using 'SOLID65'-eight-node brick element, which is capable of simulating the cracking and crushing behavior of brittle materials. The reinforcements such as deformed bars, prestressing wires and steel fibers have been modeled discretely using 'LINK8' - 3D spar element. The slip between the reinforcement (rebar, fibers) and the concrete has been modeled using a 'COMBIN39'-non-linear spring element connecting the nodes of the 'LINK8' element representing the reinforcement and nodes of the 'SOLID65' elements representing the concrete. The 'ANSYS' model correctly predicted the diagonal tension failure and shear compression failure of prestressed concrete beams observed in the experiment. The capability of the model to capture the critical crack regions, loads and deflections for various types of shear failures in prestressed concrete beam has been illustrated.

키워드

참고문헌

  1. Barzegar, F., (1988) 'Analysis of RC membrane elements with anisotropic reinforcements', J. Struct. Eng., ASCE, 115(3), 647-665
  2. Bazant, Z. P. and Oh, B. H., (1983) 'Crack band theory for fracture of concrete', Materials and Structures, 16, 155-177 https://doi.org/10.1007/BF02486267
  3. Belletti, B., Bernardi, P., Cerioni, R., and Iori, I. (2003), 'On a fiber reinforced concrete constitutive model for NLFE analysis', Studies and Researches, Italy 24, 23-49
  4. Edward, A.D. and Yannopoulos, P.J. (1979), 'Local bond-stress to slip relationship of hot rolled deformed bars and mild steel plain bars', ACI J., 76(1), 405-420
  5. Fanning, P., (2001), 'Non-linear models for reinforced and post-tensioned concrete beams', Electronic J. Struct. Eng., 2, 111-119
  6. Kotosov, M. D. and Pavlovic, M. N. (2004), 'Size effects in beams with smaller shear span to depth ratios', Comp. Struct., 82, 143-156 https://doi.org/10.1016/j.compstruc.2003.10.001
  7. Kawakami, M. and Ito, T., (2003), 'Non-linear finite element analysis of prestressed concrete members using ADINA,' Comput. Struct., 81, 727-734 https://doi.org/10.1016/S0045-7949(02)00486-8
  8. Mirza, S.M. and Houde, J. (1979), 'Study of bond stress-slip relationships in reinforced concrete', ACI J., 76(1), 19-45
  9. Nammur, Jr. G. and Namman, A. E. (1989), 'Bond stress model for fibre reinforced concrete based on bond stress slip relationship', ACI Materials J., 86(1), 45-56
  10. Padmarajaiah, S. K. and Ramaswamy, A. (2002), 'A finite element assessment of flexural strength of prestressed concrete beams with fiber reinforcement', Cement Conc. Com., 24, 229-241 https://doi.org/10.1016/S0958-9465(01)00040-3
  11. Soroushian, P., and Lee, D. N., (1990), 'Distribution and orientation of fibers in steel fiber reinforced concrete', ACI Materials J., 87(5), 433-439
  12. William, K. J. and Warnke, E. D. (1975), 'Constitutive model for tri-axial behavior of concrete', Proceedings of the International Association for Bridge and Structural Engineering, ISMES, Bergamo, Italy, 19/1-30
  13. Zhao, Z. Z., Kwan, A. K. H., and He, X. G., (2004), 'Non-linear finite element analysis of deep reinforced concrete coupling beams', Eng. Struct. 26, 13-25 https://doi.org/10.1016/j.engstruct.2003.08.014

피인용 문헌

  1. Diagnosis and Intervention Criteria in Slabs Damaged by Severe Corrosion of Prestressed Joists vol.29, pp.1, 2015, https://doi.org/10.1061/(ASCE)CF.1943-5509.0000515
  2. Finite Element Analysis and Damage Indices for Flexural Behavior of Rural Concrete Composites vol.29, pp.16, 2010, https://doi.org/10.1177/0731684409353816
  3. アルカリ骨材反応によるコンクリートのひび割れ発生モデルの構築と解析手法の提案 vol.63, pp.4, 2007, https://doi.org/10.2208/jsceja.63.744
  4. Flexural Behavior of Corroded RC Members with Patch Repair - Experiments & Simulation vol.6, pp.2, 2006, https://doi.org/10.3151/jact.6.317
  5. Finite element analysis of shear-critical reinforced concrete walls vol.8, pp.2, 2006, https://doi.org/10.12989/cac.2011.8.2.143
  6. Numerical Investigation on the Dynamic Performance of Steel-Concrete Composite Continuous Rigid Bridges Subjected to Moving Vehicles vol.13, pp.24, 2006, https://doi.org/10.3390/su132413666