Computers and Concrete

  • 제7권4호
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  • Pages.347-364
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  • 2010
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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Enhanced solid element for modelling of reinforced concrete structures with bond-slip

  • Dominguez, Norberto (Seccion de Estudios de Posgrado e Investigacion (SEPI), ESIA-UZ, Instituto Politecnico Nacional) ;
  • Fernandez, Marco Aurelio (Seccion de Estudios de Posgrado e Investigacion (SEPI), ESIA-UZ, Instituto Politecnico Nacional) ;
  • Ibrahimbegovic, Adnan (Laboratoire de Mecanique et Technologie (LMT), ENS-Cachan/UPMC/CNRS/PRES)
  • 투고 : 2009.05.14
  • 심사 : 2010.01.26
  • 발행 : 2010.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

Since its invention in the $19^{th}$ century, Reinforced Concrete (RC) has been widely used in the construction of a lot of different structures, as buildings, bridges, nuclear central plants, or even ships. The details of the mechanical response for this kind of structures depends directly upon the material behavior of each component: concrete and steel, as well as their interaction through the bond-slip, which makes a rigorous engineering analysis of RC structures quite complicated. Consequently, the practical calculation of RC structures is done by adopting a lot of simplifications and hypotheses validated in the elastic range. Nevertheless, as soon as any RC structural element is working in the inelastic range, it is possible to obtain the numerical prediction of its realistic behavior only through the use of non linear analysis. The aim of this work is to develop a new kind of Finite Element: the "Enhanced Solid Element (ESE)" which takes into account the complex composition of reinforced concrete, being able to handle each dissipative material behavior and their different deformations, and on the other hand, conserving a simplified shape for engineering applications. Based on the recent XFEM developments, we introduce the concept of nodal enrichment to represent kinematics of steel rebars as well as bonding. This enrichment allows to reproduce the strain incompatibility between concrete and steel that occurs because of the bond degradation and slip. This formulation was tested with a couple of simple examples and compared to the results obtained from other standard formulations.

키워드

참고문헌

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피인용 문헌

  1. Investigation of bond behavior between lightweight aggregate concrete and steel rebar using bending test vol.8, pp.4, 2011, https://doi.org/10.12989/cac.2011.8.4.465
  2. Implementation of bond-slip effects on behaviour of slabs in structures vol.16, pp.2, 2015, https://doi.org/10.12989/cac.2015.16.2.311
  3. Investigating the effect of bond slip on the seismic response of RC structures vol.46, pp.5, 2013, https://doi.org/10.12989/sem.2013.46.5.695
  4. A multiscale model for reinforced concrete with macroscopic variation of reinforcement slip pp.1432-0924, 2018, https://doi.org/10.1007/s00466-018-1588-3
  5. An incompatible 3D solid element for structural analysis at elevated temperatures vol.40, pp.3, 2011, https://doi.org/10.12989/sem.2011.40.3.393
  6. Applied element method simulation of experimental failure modes in RC shear walls vol.19, pp.4, 2017, https://doi.org/10.12989/cac.2017.19.4.365