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(同濟(jì)大學(xué)土木工程學(xué)院 上海 200092)
【提要】 闡述了逆迭代法的基本過(guò)程與原理，并將其運(yùn)用于預(yù)應(yīng)力索結(jié)構(gòu)的一類形狀確定問(wèn)題。逆迭
代法不僅能確定索結(jié)構(gòu)預(yù)應(yīng)力初始態(tài)的預(yù)應(yīng)力分布，而且能確定索結(jié)構(gòu)零狀態(tài)的幾何。通過(guò)算例可看出此方法的精確性與廣泛適用性。
【關(guān)鍵詞】 逆迭代法 形狀確定 索結(jié)構(gòu)
Inverse Iteration Method in Formfinding of Cable Structures/Li Guoqiang,Shen Liyuan,Luo Yongfeng(College of Civil Engineering,Tongji University,Shanghai 200092,China)
Abstract:The principle of the inverse iteration method is stated and the method is applied to one kind of formfinding process.The method can determinate not only the stress distribution in prestress state but also the initial geometry of structure in initial state.Numerical examples show the high accuracy and the universality of this method.
Keywords:inverse iteration method; formfinding; cable structures