考虑不同连梁跨高比的装配式混凝土联肢剪力墙基础隔震结构受力性能分析  

Mechanical performance study of precast concrete coupled shear wall base-isolated structures considering different span-height ratio of coupling beams

作　　者：肖佳栋[1] 屈魏超 刘涛[1] Xiao Jia-dong;Qu Wei-chao;Liu Tao(Hebei Institute of Architectural Design&Research Co.Ltd,Shijiazhuang 050000,China)

机构地区：[1]河北建筑设计研究院有限责任公司,河北石家庄050000

出　　处：《工程抗震与加固改造》2022年第2期105-112,共8页Earthquake Resistant Engineering and Retrofitting

摘　　要：本文旨在研究不同的连梁跨高比对装配式混凝土联肢剪力墙基础隔震结构受力性能的影响。采用ABAQUS有限元分析软件,对3种不同连梁跨高比条件下的装配式混凝土联肢剪力墙基础隔震结构进行了非线性有限元分析。研究结果表明:随着连梁跨高比减小,装配式联肢剪力墙基础隔震结构的墙肢耦合度增加,结构承载力和等效刚度提高;墙体间的剪力传递增大,结构达到极限承载力时,上部剪力墙塑性损伤破坏更加严重,墙肢内部纵筋应力增大;同时墙肢底部的变形差降低,隔震层变形向整体协调变形趋近,隔震层转角呈下降趋势。This paper aims to study the influence of different span-height ration on the mechanical performances of base-isolated precast concrete coupled shear wall structures. Finite element software ABAQUS is used to conduct nonlinear finite element analysis on three groups of base-isolated precast concrete coupled shear wall models with three different span-height ratio. It can be found that the coupling degree of the shear wall on both sides of the coupling beams will increase with the decrease of the span-height ratio of the coupling beams, thus, the ultimate bearing capacity and equivalent stiffness of the precast base-isolated structure are improved, The shear transfer between the shear walls increases, and the damage of the both sides of the upper shear walls is more serious on each floor when the structure reaches the ultimate bearing capacity, the longitudinal reinforcement stress of the shear wall increases, Meanwhile, the deformation difference at the bottom of the shear walls decreases, and the deformation of the isolation layer approaches to the overall coordinated deformation, and the rotation of the isolation layer shows a downward trend.

关 键 词：连梁跨高比 装配式混凝土联肢剪力墙 基础隔震结构 有限元分析 

分 类 号：TU352.1[建筑科学—结构工程]