Steel and Composite Structures

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Bond-slip effect in steel-concrete composite flexural members: Part 1 - Simplified numerical model

  • Lee, WonHo (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kwak, Hyo-Gyoung (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Hwang, Ju-young (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
  • Received : 2019.03.07
  • Accepted : 2019.08.22
  • Published : 2019.08.25
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Abstract

This paper introduces an improved numerical model which can consider the bond-slip effect in steel-concrete composite structures without taking double nodes to minimize the complexity in constructing a finite element model. On the basis of a linear partial interaction theory and the use of the bond link element, the slip behavior is defined and the equivalent modulus of elasticity and yield strength for steel is derived. A solution procedure to evaluate the slip behavior along the interface of the composite flexural members is also proposed. After constructing the transfer matrix relation at an element level, successive application of the constructed relation is conducted from the first element to the last element with the compatibility condition and equilibrium equations at each node. Finally, correlation studies between numerical results and experimental data are conducted with the objective of establishing the validity of the proposed numerical model.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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