四角两边连接防屈曲钢板剪力墙力学机制

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中文摘要：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.

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

外文摘要：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.

外文关键词：

connection to beams and partial columsbuckling-restrained steel plate wallsstructural stiffnessstructural ductilityshearing force distribution

作者：

魏木旺、杨烁、傅学怡、李华伟

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作者单位：

武夷学院土木工程与建筑学院,福建武夷山 354300

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

中国中建设计研究院有限公司,北京 100000

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

基金：

福建省自然科学基金福建省住建厅科技项目南平市资源化学产业科技创新联合资助项目武夷学院高层次人才科研启动基金大学生创新创业训练计划

项目编号：

2022J0111952023-K-11N2021Z002YJ202203202210397004

出版年：

2024

DOI：

10.15958/j.cnki.gdxbzrb.2024.02.11

贵州大学学报(自然科学版)

贵州大学

贵州大学学报(自然科学版)

CSTPCD

影响因子：0.396

ISSN：1000-5269

年,卷(期)：2024.41(2)

参考文献量19