带端柱高强混凝土剪力墙非线性有限元的参数分析  

Nonlinear Finite Analysis of the High-strength Concrete Shear Walls with Boundary Columns

作　　者：孙芳宁[1] 曹建锋[2] 

机构地区：[1]青岛工学院建筑工程学院,山东青岛266000 [2]苏州工业园区设计研究院股份有限公司,江苏苏州250021

出　　处：《建筑科学》2015年第9期26-31,共6页Building Science

摘　　要：采用有限元软件ABAQUS中的混凝土损伤模型,考虑材料非线性,建立带端柱高强混凝土剪力墙的非线性有限元模型,进行数值模拟分析,并将数值分析结果与试验结果进行对比,验证了有限元模型的合理性和可靠性。在此基础上,分析了轴压比、剪跨比、边缘约束构件箍筋间距和纵筋配筋率对剪力墙抗震性能的影响。研究结果表明:随着轴压比的增大,承载能力逐渐增加,延性系数逐渐减小;随着剪跨比的减小,承载能力逐渐增加,延性系数逐渐减小;随着边缘约束构件箍筋间距增大,承载能力和延性系数均逐渐减小;随着约束边缘构件纵筋配筋率的增大,承载能力稍有增大,延性系数先增大后逐渐减小。Nonlinear finite analysis model is established by finite analysis software ABAQUS,concrete damage plastic model in ABAQUS is adopted to analyze the high-strength concrete shear walls with boundary columns. The reliability and rationality of the finite analysis model is confirmed by the comparison of test results and analysis results. Based on this,the influences of design parameters on seismic behavior of high-strength concrete shear wall,such as axial compression ratios,shear span ratios,stirrup spacings and restraint flange members longitudinal reinforcement ratios,are analyzed. The analysis results indicate that bearing capacity is increased and ductility factor is decreased with axial compression ratios increasing and shear span ratios decreasing,the bearing capacity and ductility factor are decreased with stirrup spacings increasing,as longitudinal reinforcement ratios of restraint flange members is increased,the bearing capacity is increased and ductility factor is increased at first and then is decreased.

关 键 词：端柱 高强混凝土 剪力墙 非线性有限元 参数分析 

分 类 号：TU398.2[建筑科学—结构工程]