基于OpenSees的双钢板混凝土组合剪力墙数值模拟  

Numerical Simulation of Double Skin Composite Wall Based on OpenSees

作　　者：汪士也 王伟[1,2] WANG Shiye;WANG Wei(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程防灾减灾全国重点实验室,上海200092 [2]同济大学土木工程学院,上海200092

出　　处：《建筑钢结构进展》2025年第4期79-86,99,共9页Progress in Steel Building Structures

基　　金：国家自然科学基金(52078366、52378182);“十四五”国家重点研发计划项目(2022YFC3801900)。

摘　　要：为实现双钢板混凝土组合剪力墙构件在地震荷载下的精细化数值模拟,提出了可以考虑钢板局部屈曲和失效的单轴材料模型CFSTsteel,该模型可以隐式计算钢板在循环荷载作用下,由于板件局部失稳所表现出的具有路径依赖特性的循环强化和软化效应。基于OpenSees开源计算软件,建立了双钢板混凝土组合剪力墙的纤维模型,并利用该模型对两个足尺双钢板混凝土组合剪力墙试件在罕遇地震动加载制度下的滞回行为进行了模拟,计算结果表明:相较于采用传统的不考虑循环退化的钢材单轴本构Steel02,采用CFSTsteel的纤维模型可以更好地模拟双钢板混凝土组合剪力墙构件在低周往复荷载作用下的刚度和承载力退化行为。CFSTsteel单轴材料模型已被添加至OpenSees单轴材料模型库中。In order to simulate the cyclic behavior of double skin composite wall(DSCW)under earthquake excitations,a uniaxial material model,named CFSTsteel,that could capture the local buckling effect and fracture of steel plate was proposed.This model can implicitly simulate the cyclic hardening and softening of steel plate under cyclic loading,which exhibit path-dependent characteristics due to local buckling.Based on the OpenSees software,the fiber model of DSCW was established.The proposed fiber model of DSCW was employed to predict the cyclic behavior of DSCW specimens under maximum considered earthquake loading protocol.The simulate results showed that,compared to the traditional uniaxial material model Steel02,which does not consider cyclic deterioration,the predicted results using CFSTsteel could more accurately capture the cyclic deterioration of stiffness and strength of DSCW under cyclic loads.The proposed uniaxial material model has been implemented in the Open System for Earthquake Engineering Simulation(OpenSees)platform.

关 键 词：双钢板混凝土组合剪力墙 抗震性能 纤维模型 局部屈曲 OPENSEES 循环退化 单轴材料模型 

分 类 号：TU398.9[建筑科学—结构工程]