基于纤维模型的型钢混凝土组合剪力墙滞回性能分析  

Hysteretic behavior of steel-reinforced concrete composite shear walls based on fiber model

作　　者：王文达[1] 魏国强[1] 

机构地区：[1]兰州理工大学甘肃省土木工程防灾减灾重点实验室,兰州730050

出　　处：《振动与冲击》2015年第6期30-35,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(51268038);甘肃省科技支撑计划项目(1204FKCA146);甘肃省建设科技攻关项目(JK2013-17)资助

摘　　要：为更深入研究型钢混凝土剪力墙的抗震性能,在已有该类剪力墙滞回性能试验结果基础上,采用Open Sees软件中非线性纤维梁-柱单元进行低周往复加载的数值模拟,通过直接在截面层次定义非线性剪切恢复力方法模拟纤维截面的抗剪。计算结果与试验结果总体吻合较好,表明该纤维模型法能较好模拟型钢混凝土剪力墙的抗剪承载力、捏缩效应及刚度退化。该方法可为此类结构体系的弹塑性分析提供参考。Steel-reinforced concrete（ SRC） composite shear walls are typical structural components to resist the lateral loading in many high-rise and super high-rise buildings because of their excellent aseismic behavior. In order to study the aseismic performance of those structures,the open system for earthquake engineering simulation（ Open Sees）software was used to simulate the hysteretic behavior of the composite shear walls under low cyclic loading with nonlinear beam-column fiber elements based on the other researchers＇ tests. The anti-shear behavior of fiber cross-sections was simulated with the nonlinear shear restoring force defined directly at the cross-section level. It was shown that the numerical results agree well with the test ones; the fiber model considering the shear effect can predict the maximum shear force,pinch effect and stiffness degradation of SRC composite shear walls effectively. The proposed method provided a reference for elastic-plastic analysis of this type structures.

关 键 词：型钢混凝土组合剪力墙 纤维模型 滞回性能 Open SEES 抗震性能 数值模型 

分 类 号：TU398[建筑科学—结构工程]