Quasistatic Cyclic Tests and Finite Element Analysis of Low-Aspect Ratio Double Steel Concrete Composite Walls

Kaize Ma,Boquan Liu,Yudong Ma

doi:10.1155/2019/5917380

Abstract

An innovative double steel concrete (DSC) composite wall was developed to enhance constructability and lateral load resistance of buildings. Three low-aspect ratio DSC composite walls were constructed and tested to study the shear behavior. Under different testing parameters, the failure modes, hysteresis behavior, lateral load resisting capacity, deformation, and energy dissipation of the composite walls were observed. The results showed that all specimens failed in shear behavior with steel plate buckling and concrete compressive crushing. The pinching behavior was obvious for hysteresis loops of composite walls. Moreover, the lateral load resisting capacity and deformation were significantly affected with axial compression ratio and steel ratio. Beyond that, the ductility coefficients of specimens reached 3.30. The finite element (FE) method was performed to analyze the failure process of the specimens with cyclic analysis. The concrete damage plastic model (CPDM) was selected to simulate the damage progress of concrete. Validation of the FE models against the experimental results showed good agreement.

Highlights

Shear wall is one of the most common lateral resistance members for high-rise buildings, which can improve the lateral stiffness and lateral load resisting capacity of the structure
Ricci et al tested cellular structures composed of cast in situ sandwich squat concrete walls. e results showed that the seismic performances of the tested sandwich panels are comparable with those of common R/C panels and can withstand horizontal load, at large interstorey drift, to vertical load-carrying capacity [1, 2]
Ji et al [15] researched the seismic behavior of the steel tube-double steel plate-concrete composite wall. e results indicated that specimens failed in a flexural mode, and the deformation and energy dissipation capacities were significantly affected by the extent of the steel tube boundary element. e seismic behavior of double steel plate high-strength concrete composite walls was evaluated by Chen at al. [16]

Summary

Introduction

Shear wall is one of the most common lateral resistance members for high-rise buildings, which can improve the lateral stiffness and lateral load resisting capacity of the structure. E steel plate and concrete are constrained with each other, thereby increasing the stiffness, lateral load resisting capacity, and deformation of composite walls. Ji et al [15] researched the seismic behavior of the steel tube-double steel plate-concrete composite wall. E seismic behavior of double steel plate high-strength concrete composite walls was evaluated by Chen at al. A finite element model of flexure-critical composite shear walls in LS-DYNA was developed by Siamak et al [18], which showed good consistency with test results in nonlinear cyclic response. Cyclic test was presented in this study which has some principle objectives summarized as follows: (1) to research some representative seismic results of the DSC composite wall such as lateral load resisting capacity, deformation capacity, and energy dissipation capacity and (2) to analyze the failure process of DSC composite walls by establishing a reliable numerical model

Experimental Detail

Test Results and Analysis

Numerical Simulation