Structural Engineering and Mechanics

  • 제13권3호
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  • Pages.313-328
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  • 2002
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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A study on compressive strength of concrete in flexural regions of reinforced concrete beams using finite element analysis

  • Cho, Chang-Geun (Research Institute for Disaster Prevention, Kyungpook National University) ;
  • Hotta, Hisato (Department of Architecture and Building Engineering, Tokyo Institute of Technology)
  • 발행 : 2002.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Based on the orthotropic hypoelasticity formulation, a triaxial constitutive model of concrete is proposed. To account for increasing ductility in high confinement of concrete, the ductility enhancement is considered using so called the strain enhancement factor. It is also developed a three-dimensional finite element model for reinforced concrete structural members based on the proposed constitutive law of concrete with the smeared crack approach. The concrete confinement effects due to the beam-column joint are investigated through numerical examples for simple beam and structural beam member. Concrete at compression fibers in the vicinity of beam-column joint behaves dominant not only by the uniaxial compressive state but also by the biaxial and triaxial compressive states. For the reason of the severe confinement of concrete in the beam-column joint, the flexural critical cross-section is observed at a small distance away from the beam-column joint. These observations should be utilized for the economic design when the concrete structural members are subjected to high confinement due to the influence of beam-column joint.

키워드

참고문헌

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피인용 문헌

  1. Compressive Strength of Concrete in Flexural Critical Region of Reinforced Concrete Beam-Column Members vol.14, pp.6, 2011, https://doi.org/10.1260/1369-4332.14.6.981
  2. Modified Mohr‐Coulomb – Rankine material model for concrete vol.28, pp.7, 2011, https://doi.org/10.1108/02644401111165112
  3. Model for fiber Cross-Sectional Analysis of FRP Concrete Members Based on the Constitutive Law in Multi-Axial Stress States vol.14, pp.6, 2002, https://doi.org/10.4334/JKCI.2002.14.6.892
  4. Prediction of nonlinear bending behavior for FRP concrete beams based on multi-axial constitutive laws vol.30, pp.9, 2008, https://doi.org/10.1016/j.engstruct.2008.01.010
  5. 3차원 구성관계를 고려한 FRP-구속 콘크리트의 압축거동 예측모델 vol.16, pp.4, 2002, https://doi.org/10.4334/jkci.2004.16.4.501
  6. Nonlinear model of reinforced concrete frames retrofitted by in-filled HPFRCC walls vol.30, pp.2, 2002, https://doi.org/10.12989/sem.2008.30.2.211
  7. Flexural analysis of transverse joints of prefabricated T-girder bridge superstructure vol.77, pp.1, 2002, https://doi.org/10.12989/sem.2021.77.1.089