索膜结构非线性有限元找形荷载全过程分析  

FORM-FINDING AND LOADING ANALYSIS OF CABLE-MEMBRANE STRUCTURE BY NONLINEAR FINITE ELEMENT

作　　者：白玉星[1] 王珊[1] 高建岭[1] 王晓纯[1] 

机构地区：[1]北方工业大学建筑工程学院,北京100041

出　　处：《工业建筑》2008年第z1期455-458,共4页Industrial Construction

基　　金：北京市教育委员会科技发展计划资助项目(01KJ-027)

摘　　要：基于索模结构非线性有限元理论,膜单元采用考虑小应变大位移的平面三角形单元,索单元采用考虑大变形的二节点直线杆单元,引入支座提升方法和杨氏小模量理论,给出了一种索膜结构找形的方法。随后应用通用有限元软件ANSYS,对某高校看台膜结构进行了找形分析,并依照新的膜结构技术规程,进行了荷载分析。找形及荷载分析结果符合规程要求,证实了该方法的有效性和可行性。Based on the theory of non-linear finite element of cable membrane structure,triangular plane element and two-nodes spar element which include small strain and large deflection are used in analysis.Combining support moving method with theory of small Yang's modulus,a method for form finding analysis of cable-membrane structure is proposed.Applying universal finite soft ANSYS,form finding analysis of membrane structure of one college stand is done.By taking into account Geometric Nonlinearities and Technical Specification for Membrane Structures accomplish loading analysis is carried out.The results of the analysis are in accord with the specification.It is shown that the proposed method is of high efficiency and practicality.

关 键 词：小杨氏模量理论 几何非线性 支座提升法 找形分析 

分 类 号：TU399[建筑科学—结构工程]