DOI QR코드

DOI QR Code

Improved numerical approach for the bond-slip behavior under cyclic loads

  • Kwak, H.G. (Department of Civil Engineering, Korea Advanced Institute of Science and Technology)
  • 발행 : 1997.09.25

초록

Bond-slip behavior between reinforcement and concrete under push-pull cyclic loadings is numerically investigated based on a reinforcement model proposed in this paper. The equivalent reinforcing steel model considering the bond-slip effect without taking double nodes is derived through the equilibrium at each node of steel and the compatibility condition between steel and concrete. Besides a specific transformation algorithm is composed to transfer the forces and displacements from the nodes of the steel element to the nodes of the concrete element. This model first results in an effective use in the case of complex steel arrangements where the steel elements cross the sides of the concrete elements and second turns the impossibility into a possibility in consideration of the bond-slip effect in three dimensional finite element analysis. Finally, the correlation studies between numerical and experimental results under the continuously repeated large deformation stages demonstrate the validity of developed reinforcing steel model and adopted algorithms.

키워드

참고문헌

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  3. Numerical modelling of the cyclic behaviour of RC elements built with plain reinforcing bars vol.33, pp.2, 2011, https://doi.org/10.1016/j.engstruct.2010.11.005
  4. Monotonic moment–curvature relation of an RC beam vol.54, pp.6, 2002, https://doi.org/10.1680/macr.2002.54.6.423
  5. Overview on the bonding of reinforced concrete under pristine, corrosive and freeze-thaw conditions pp.1568-5616, 2019, https://doi.org/10.1080/01694243.2018.1559439
  6. Numerical Modeling of RC Columns and a Modified Steel Model Proposal for Elements With Plain Bars vol.6, pp.None, 1997, https://doi.org/10.3389/fbuil.2020.586690