Computers and Concrete

  • 제17권3호
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  • Pages.407-421
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  • 2016
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Simulation study on CFRP strengthened reinforced concrete beam under four-point bending

  • Zhang, Dongliang (College of Architecture and Environment, Sichuan University) ;
  • Wang, Qingyuan (College of Architecture and Environment, Sichuan University) ;
  • Dong, Jiangfeng (College of Architecture and Environment, Sichuan University)
  • 투고 : 2014.07.26
  • 심사 : 2016.02.19
  • 발행 : 2016.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents numerical modeling of the structural behavior of CFRP (carbon fiber reinforced polymer) strengthened RC (reinforced concrete) beams under four-point bending. Simulation of debonding at the CFRP-concrete interface was focused, as it is the main failure mode of CFRP strengthened RC beams. Here, cohesive layer was employed to model the onset of debonding, which further helps to describe the post debonding behavior of the CFRP strengthened RC beam. In addition, the XFEM approach was applied to investigate the effects of crack localization on strain field on CFRP sheet and rebar. The strains obtained from the XFEM correlate better to the test results than that from CDP (concrete damaged plasticity) model. However, there is a large discrepancy between the experimental and simulated loaddisplacement relationships, which is due to the simplification of concrete constitutive law.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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피인용 문헌

  1. Buckling of concrete columns retrofitted with Nano-Fiber Reinforced Polymer (NFRP) vol.18, pp.5, 2016, https://doi.org/10.12989/cac.2016.18.5.1053
  2. Ductility of Concrete Beams Reinforced with Both Fiber-Reinforced Polymer and Steel Tension Bars vol.16, pp.11, 2018, https://doi.org/10.3151/jact.16.531
  3. Mechanical performances of concrete beams with hybrid usage of steel and FRP tension reinforcement vol.20, pp.4, 2016, https://doi.org/10.12989/cac.2017.20.4.391
  4. Side-NSM composite technique for flexural strengthening of RC beams vol.20, pp.4, 2016, https://doi.org/10.12989/cac.2017.20.4.439
  5. Evaluation of constitutive relations for concrete modeling based on an incremental theory of elastic strain-hardening plasticity vol.22, pp.2, 2016, https://doi.org/10.12989/cac.2018.22.2.227
  6. Numerical study on fracture behavior of CFRP-strengthened self-compacting concrete beams vol.134, pp.7, 2016, https://doi.org/10.1140/epjp/i2019-12714-y
  7. Experimental verification and simulation of fracture behavior of CFRP reinforced self-consolidating concrete beams with initial notch vol.2, pp.3, 2020, https://doi.org/10.1007/s42452-020-1994-y
  8. Performance Evaluation of CFRP Strengthened Corrosion-Proof Columns vol.2021, pp.None, 2016, https://doi.org/10.1155/2021/8390088