张弦桁架结构形态分析的等效降温逆迭代法

英文篇名：Method of Equivalent Cooling Inverse Iteration for Form Finding of Truss String Structures
中文刊名：甘肃科学学报
英文刊名：Journal of Gansu Sciences
作者：陈波 ; 柯友华
英文作者：CHEN Bo ; KE You-hua(School of Civil Engineering ; Lanzhou Jiaotong University ; Lanzhou 730070 ; China)
中文关键词：等效降温逆迭代法 ; 张弦桁架 ; 找形 ; 零状态 ; 初状态
英文关键词：method of equivalent cooling inverse iteration ; truss-string ; form finding ; zero state ; early state
出版日期：2009-09-25
机构：兰州交通大学土木工程学院;
年：2009
期：03
出版单位：甘肃科学学报

摘要

对张弦桁架结构的找形问题进行了探讨研究,根据结构的受力特点,参照逆迭代法及改进的逆迭代法等找形方法理论,提出了等效降温逆迭代法.通过改两端部索段施加初应变为全部索段整体降温,进行找形分析并举例论证.通过施加温度荷载对该方法的精度进行了检验.
The form finding problem for truss-string structure is discussed.According to the characteristics of the force in the type of structure,the method of equivalent cooling inverse iteration is put forward in the light of the theories about form finding such as inverse iteration and improved inverse iteration.A form-finding analysis of the truss-string structure is done and proved by cooling at overall cable instead of imposing the initial strain at both ends of the cable.The accuracy of the method is tested by imposing the temperature load.

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