Coupled systems mechanics

  • 제3권2호
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  • Pages.195-211
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  • 2014
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  • 2234-2184(pISSN)
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  • 2234-2192(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Coupling of nonlinear models for steel-concrete interaction in structural RC joints

  • Dominguez, Norberto (Department of Postgraduate and Research Studies (SEPI) ESIA UZ National Polytechnic Institute of Mexico) ;
  • Perez-Mota, Jesus (Department of Postgraduate and Research Studies (SEPI) ESIA UZ National Polytechnic Institute of Mexico)
  • 투고 : 2014.03.25
  • 심사 : 2014.06.03
  • 발행 : 2014.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

When strong seismic forces act on reinforced concrete structures, their beam-column connections are very susceptible to damage during the earthquake event. The aim of this numerical work is to evaluate the influence of the internal steel reinforcement array on the nonlinear response of a RC beam-column connection when it is subjected to strong cyclic loading -as a seismic load. For this, two specimens (extracted from an experimental test of 12 RC beam-column connections reported in literature) were modeled in the Finite Element code FEAP considering different stirrup's arrays. In order to evaluate the nonlinear response of the RC beam-column connection, the 2D model takes into account the nonlinear thermodynamic behavior of each component: for concrete, a damage model is used; for steel reinforcement, it is adopted a classical plasticity model; in the case of the steel-concrete bonding, this one is considered perfect without degradation. At the end, we show a comparison between the experimental test's responses and the numerical results, which includes the distribution of shear stresses and damage inside the concrete core of the beam-column connection; in the other hand, the effects on the connection of a low and high state of confinement are analyzed for all cases.

키워드

참고문헌

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피인용 문헌

  1. Structural joint modeling and identification: numerical and experimental investigation vol.53, pp.2, 2015, https://doi.org/10.12989/sem.2015.53.2.373