基于修正Park-Ang模型的SCS剪力墙损伤指数研究  

Research on damage index of SCS shear wall based on modified Park-Ang model

作　　者：彭修宁[1] 李新宇 林焯铭 杨旭杰 PENG Xiuning;LI Xinyu;LIN Zhuoming;YANG Xujie(College of Civil Engineering and Architecture,Guangxi University,Nanning 530000,China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530000

出　　处：《地震工程与工程振动》2023年第1期34-42,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51668007,51168002)。

摘　　要：为研究双钢板混凝土组合剪力墙(Steel-concrete-steel composite shear walls,SCS)剪力墙在地震作用下的损伤演化规律,基于Park-Ang损伤模型提出修正后的SCS剪力墙双参数损伤模型,并采用OpenSees有限元软件对72个依照现行规范设计的SCS剪力墙试件进行分析,研究轴压比、剪跨比、暗柱配钢率、墙身配钢率对SCS剪力墙的极限位移、屈服位移、屈服剪力、累积滞回耗能等指标的影响,得到了适用于双钢板混凝土剪力墙基于变形和耗能双重准则的损伤模型。以对数正态分布作为分布密度函数来对双钢板混凝土剪力墙构件各损伤状态的累积概率密度进行拟合,得到了SCS剪力墙不同损伤程度对应的损伤指数范围。To study the damage evolution of Steel-Concrete-Steel Composite Shear Walls(SCS shear walls)under earthquakes.Based on Park-Ang damage model,a modified two parameter damage model of SCS shear wall is proposed.The OpenSees finite element software was used to analyze 72 SCS shear wall specimens designed according to the current code.The influences of axial compression ratio,shear span ratio,steel ratio of concealed column and wall body on the ultimate displacement,yield displacement,yield shear force and cumulative hysteretic energy dissipation of SCS shear wall were studied.The damage model of double steel plate concrete shear wall based on the dual criteria of deformation and energy dissipation is obtained.The normal distribution is used as the distribution density function to fit the cumulative probability density of each damage state of the double steel plate concrete shear wall members.The damage index range corresponding to different damage degrees of SCS shear wall is obtained.

关 键 词：SCS剪力墙 损伤模型 有限元分析 滞回曲线 损伤指数 

分 类 号：TU398.9[建筑科学—结构工程] TU311.41