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Steel and Composite Structures
  Volume 32, Number 4, August25 2019 , pages 537-548
DOI: https://doi.org/10.12989/scs.2019.32.4.537
 


Bond-slip effect in steel-concrete composite flexural members: Part 1 — Simplified numerical model
WonHo Lee, Hyo-Gyoung Kwak and Ju-Young Hwang

 
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.
 
Key Words
    composite structure; bond-slip; slip analysis; flexural member; FEM
 
Address
Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
 

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