四角两边连接防屈曲钢板剪力墙力学机制  

Mechanical Behavior of Buckling-Restrained Steel Plate Shear Wall Connected to Beams and Partial Columns

作　　者：魏木旺 杨烁 傅学怡 李华伟 WEI Muwang;YANG Shuo;FU Xueyi;LI Huawei(Department of Civil Engineering and Architecture,Wuyi University,Wuyishan 354300,China;Key Laboratory of Intelligent Town Construction Technology in Hilly Areas of Fujian Province,Wuyishan 354300,China;China Construction Engineering Design&Research Institute Co.,Ltd.,Beijing 100000,China)

机构地区：[1]武夷学院土木工程与建筑学院,福建武夷山354300 [2]丘陵山地智慧城镇建设技术福建省高校重点实验室,福建武夷山354300 [3]中国中建设计研究院有限公司,北京100000

出　　处：《贵州大学学报（自然科学版）》2024年第2期75-83,共9页Journal of Guizhou University:Natural Sciences

基　　金：福建省自然科学基金资助项目(2022J011195);福建省住房和城乡建设厅科技计划项目(2023-K-11);南平市资源化学产业科技创新联合资助项目(N2021Z002);武夷学院高层次人才科研启动项目(YJ202203);大学生创新创业训练计划项目(202210397004)。

摘　　要：为了保障降低框架柱刚度要求的同时,可以平衡防屈曲钢板剪力墙作为抗侧力构件和耗能构件的功能,本文提出了四角两边连接防屈曲钢板剪力墙。通过理论推导和数值模拟对四角两边连接防屈曲钢板剪力墙力学性能进行研究,给出了理论承载力和最小刚度表达式,分析了内嵌钢板与钢框架相互作用机制,阐述了四角两边连接防屈曲钢板剪力墙刚度和延型,研究了钢框架和内嵌钢板剪力分配规律。研究表明:四角两边连接防屈曲钢板剪力墙相较于四边连接防屈曲钢板剪力墙降低了边框柱刚度最低要求的40%;内嵌钢板承担了80%以上的剪力,当塑性铰完全形成之后,内嵌钢板与框架柱承担剪力比例趋于平衡;混凝土盖板的约束作用能够有效提高内嵌钢板承担剪力能力,混凝土盖板厚度大于40 mm,结构初始刚度和内嵌钢板承担剪力不再增加。因此,四角两边连接防屈曲钢板剪力墙具有良好的抗震性能,可以作为抗侧力构件应用于高层建筑抵抗水平荷载。In order to reduce the stiffness requirement of frame column,and to balance the functions of buckling-restrained steel plate shear wall as lateral force resistant component and energy dissipation component,in this paper,the buckling-restrained steel plate shear wall connected on both sides and the four corners is presented.Through the theoretical derivation and numerical simulation,this paper investigated the mechanical properties of the presented shear wall,present the theory of bearing capacity and the minimum stiffness expression,describe the stiffness and elongation of the buckling-restrained steel plate shear wall connected on both sides and the four corners,and study the shear force distribution law between steel frame and embedded steel plate.The results show that the buckling steel plate shear wall connected at both sides and the four corners reduces the minimum stiffness requirement of the frame column by 40%compared with the buckling steel plate shear wall connected at four sides;The embedded steel plate bears more than 80%of the shear force.When the plastic hinge is fully formed,the proportion of shear force borne by the embedded steel plate and the frame column tends to be balanced;the concrete covers can provide lateral constrain to improve the embedded steel plate shear capacity.The restraint effect of the concrete cover plate can effectively improve the shear bearing capacity of the embedded steel plate,until the thickness of concrete cover plate is 40 mm,the initial stiffness and embedded steel plate shear force no longer increases.Therefore,buckling-restrained steel plate shear walls connected on both sides and the four corners have good seismic performance and can be used as lateral force resistant components in high-rise buildings to resist horizontal loads.

关 键 词：四角两边连接 防屈曲钢板剪力墙 结构刚度 结构延性 剪力分配 

分 类 号：TU973.16[建筑科学—结构工程]