带加劲肋多腔双层钢板-混凝土组合剪力墙有限元分析

Finite element analysis of composite shear wall with double steel plates and infill concrete with stiffeners

基于带加劲肋多腔双层钢板-混凝土组合剪力墙抗震性能试验的试验结果,采用有限元软件ABAQUS建立非线性有限元模型。对加载全过程中组合剪力墙的力学性能进行分析,有限元模拟结果与试验结果吻合较好。在此基础上,分析了影响组合剪力墙力学性能的主要因素,包括混凝土强度、钢材屈服强度、钢板厚度和拉条的布置形式。结果表明:提高混凝土强度能提高组合剪力墙的承载力,但当混凝土强度高于C60时,承载力提高缓慢;提高钢材屈服强度能较明显地提高组合剪力墙的承载力;增大钢板厚度,组合剪力墙的承载力呈线性趋势增长,且初始刚度和变形能力也提高;拉条间距减小,组合剪力墙的承载力有所提高。

Base on the experimental study on seismic behavior of composite shear wall with double steel plates and infill concrete with stiffeners(CSW),the finite element analysis software ABAQUS was performed to set up a nonlinear finite element model of CSW structure.Mechanical properties of CSW were analyzed by simulating the loading process.The finite element analysis results were in good agreement with experimental results.Based on the proposed model,main factors influencing mechanical properties of the structure were analyzed including concrete strength,steel yield strength,steel plate thickness and distance between binding bars.It is concluded that with the increase of concrete strength,the bearing capacity of CSW improves but when concrete strength is higher than C60,the bearing capacity improves slowly.With the increase of steel yield strength,the bearing capacity of CSW improves markedly.With the increase of steel plate thickness,the bearing capacity of CSW improves linearly and the initial stiffness and deformation capability also improves.With the decreasing of distance between binding bars,the bearing capacity of CSW improves.