偏心腹杆对交错桁架体系抗震性能影响  

Analyze of eccentrically web members influence on the seismic performance of staggered-truss system

作　　者：巩玉发[1] 闫杨润 李紫璇[1] 

机构地区：[1]辽宁工程技术大学建筑工程学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2016年第10期1122-1125,共4页Journal of Liaoning Technical University (Natural Science)

摘　　要：为研究偏心腹杆对交错桁架结构体系的抗震性能的影响,将数量不同的內填偏心腹杆桁架代替原结构的混合桁架建立3个计算模型,采用有限元分析软件ANSYS对3个偏心腹杆桁架结构和原桁架结构进行模态和时程分析.对比结果表明:偏心腹杆增加了结构的耗能能力,同时有效地增加了交错桁架结构的横向刚度,减小了结构顶点横向的水平位移;随着偏心腹杆数量的增多,结构横向水平位移的减小越明显.In order to analyze the influence of the eccentrically web members on the Seismic performance of staggered-truss system, this paper established three modals by using different number of eccentric web instead of the original structure of truss hybrid. General finite element analysis software ANSYS was used to analyze structure of modal and time-procedure for three concrete-filled steel staggered truss and original modal. Comparing results show that eccentrically web increases the energy dissipation capacity of the structure; the eccentrically web truss can effectively increase the staggered truss structure lateral rigidity and reduce the top displacement. Along with the increase of number of eccentrically web members, the effect is enhanced.

关 键 词：偏心腹杆 交错桁架 抗震性能 时程分析 频率 

分 类 号：TU393.3[建筑科学—结构工程]