加设自复位支撑冷弯型钢龙骨剪力墙滞回性能研究  

Research on Hysteretic Properties of Cold-Formed Steel Framed Shear Walls with Self-Centering Energy Dissipation Braces

作　　者：马园泽 符宇欣 陈亮[1] 赵金友 张文莹 余少乐 MA Yuanze;FU Yuxin;CHEN Liang;ZHAO Jinyou;ZHANG Wenying;YU Shaole(Key Laboratory of Earthquake Engineering and Structural Retrofit of Beijing,Beijing University of Technology,Beijing 100124,China;THAPE Architecture Planning&Engineering Co.,Ltd.,Shanghai 200235,China;School of Urban Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai 201418,China;China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200122,China)

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点试验室,北京100124 [2]上海天华建筑设计有限公司,上海200235 [3]上海应用技术大学城市建设与安全工程学院,上海201418 [4]中国建筑第八工程局有限公司,上海200122

出　　处：《工业建筑》2023年第1期135-143,200,共10页Industrial Construction

基　　金：国家自然科学基金项目(52008008);北京市教委项目(KM202010005029);上海市青年科技启明星计划(21QB1406400)。

摘　　要：为改善冷弯型钢龙骨剪力墙的抗震性能,提出一种自复位耗能支撑,并对其构造和工作原理进行介绍。通过建立有效的有限元模型,提出了自复位耗能支撑的简化模拟方法。将有、无加设支撑的冷弯型钢剪力墙的滞回曲线进行对比,并对自复位耗能支撑进行变参分析,考察预压力、碟簧刚度和摩擦力对墙体抗震性能的影响。结果表明:加设自复位耗能支撑可以提高墙体的承载力,增强墙体耗能能力和延性,减少结构的残余变形,提高抗震性能;墙体的残余变形随碟簧刚度和预压力增大而减小,随摩擦力增大而增大。To improve seismic performances of cold-formed steel framed shear walls,a self-centering energy-dissipation brace was proposed,and its configuration and working principle were presented.A finite element analysis model was constructed to study the mechanical properties,a simplified simulation method of self-centering energy-dissipation braces was proposed.The hysteresis curves of cold-formed steel shear walls with or without braces were compared,the variable parameter analysis of self-centering energy dissipation braces was conducted to analyze the effects of preloading,disc spring stiffness and friction on the seismic performance of the wall.The research results showed that adding self-centering energy-dissipation braces could improve the bearing capacity of the wall,enhance the energy dissipation capacity and ductility of the wall,reduce the residual deformation of the structure and improve the seismic performances of the wall;the residual deformation of the wall decreased with increasing disc spring stiffness,and preloading and increased with increasing friction.

关 键 词：冷弯型钢 剪力墙 自复位 耗能支撑 滞回性能 

分 类 号：TU392.1[建筑科学—结构工程]