钢交错桁架结构体系的非线性有限元模型  

Nonlinear finite element analysis of teel staggered truss structures

作　　者：冉红东[1,2] 苏明周[1,2] 曹森虎[3] 马云美[3] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]西部建筑科技国家重点实验室(筹),陕西西安710055 [3]中国建筑西北设计研究院有限公司,陕西西安710003

出　　处：《西安建筑科技大学学报（自然科学版）》2010年第6期823-828,共6页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：科技部科研院所专项基金项目(2004EG131165);陕西省自然科学基金项目(2001C31);西安建筑科技大学青年科技基金项目(QN0911)

摘　　要：交错桁架结构近年来成为国内外学者广泛关注的一种经济、实用、高效的结构形式,但对其抗震性能的研究很少.采用壳单元和梁单元相结合的三维非线性有限元分析模型,考虑了桁架杆件的断裂、初始缺陷,分析了两个交错桁架结构体系试件在循环荷载作用下的性能,从屈服荷载、极限荷载及滞回曲线等方面综合对比了有限元分析结果与试验结果,比较结果表明,此计算模型精确、高效,适用于交错桁架结构体系的滞回性能分析.Staggered truss frame structures characterized by their economy,efficiency and practicability have drawn wide attention in academic field in recent years,but the research onits seismic behavior is still rare.A nonlinear finite element method was induced for analyzing the staggered truss steel structure under cycle load,in which the shell and beam element was applied,the rupture and initial bent of web member of truss are considered.It was shown by computed examples through yield load,ultimate load and hysteretic curve that simulation of presented specimen was accurate and efficient,and the finite method used in the paper was appropriate for the analysis of the steel staggered truss structures.

关 键 词：钢交错桁架结构 循环荷载 滞回性能 有限元 

分 类 号：TU393.2[建筑科学—结构工程]