摘要
将X型屈曲约束钢板墙在上、下边与梁连接并在侧边与柱部分连接,即形成局部连接X型屈曲约束钢板墙。侧边局部连接可避免两边连接屈曲约束钢板墙梁端剪力过大,同时X型墙的中部削弱也避免了屈曲约束钢板墙易于在角部首先发生破坏的问题。采用有限元模拟的方法对局部连接X型屈曲约束钢板墙的受力性能进行了分析,研究发现增大侧边连接高度能够有效减小梁端剪力,而且结构的刚度和承载力也随之增大。通过参数分析确定了X型屈曲约束钢板墙侧边连接高度的建议取值,提出了局部连接X型屈曲约束钢板墙初始刚度和屈服承载力的计算公式,分析结果表明提出的理论公式具有较高的准确性。此外,还提出了局部连接X型屈曲约束钢板墙的等效支撑模型用于进行结构简化分析。
Connecting the X⁃shape buckling restrained steel plate shear wall(XBRW)to boundary beams on the top and bottom sides,and to boundary columns at local part on the left and right sides,which is the partially connected XBRW(PXBRW).Partial connection on the left and right sides could avoid the excessive shear force at the beam end for buckling restrained steel plate shear wall with two⁃side connections.Moreover,the weakening of the middle part of XBRW also avoids the damage at the corners of buckling restrained steel plate shear wall.The mechanical behavior of PXBRW was analyzed by finite element simulation.It indicated that increasing the side connection height could effectively reduce the shear force at beam ends.Meanwhile,the stiffness and bearing capacity of structure also increased.By parametric analysis,the recommended value of side connection height of PXBRW was determined,and the formulas for initial stiffness and yield capacity of PXBRW were proposed.The analysis results show that the proposed theoretical formulas can be used to calculate the initial stiffness and yield capacity of PXBRW with adequate accuracy.Furthermore,an equivalent brace model of PXBRW was presented for simplified structural analysis.
作者
刘文洋
唐远俊
孙玉宗
白那
LIU Wenyang;TANG Yuanjun;SUN Yuzong;BAI Na(College of Civil Engineering and Water Conservancy,Heilongjiang Bayi Agricultural University,Daqing 163319,China;Zhoyu Design Group Co.,Ltd.,Chengdu 610213,China)
出处
《建筑结构》
CSCD
北大核心
2022年第16期88-93,共6页
Building Structure
基金
国家自然科学基金项目(51608180)
黑龙江八一农垦大学学成、引进人员科研启动计划课题(XDB⁃2017⁃05)。
关键词
X型屈曲约束钢板墙
局部连接
初始刚度
屈服承载力
等效支撑模型
X⁃shape buckling restrained steel plate shear wall
partial connection
initial stiffness
yield capacity
equivalent brace model
