预应力索结构位移控制  

Displacement Control of Prestressed Cable Structures

作　　者：沈黎元[1] 李国强[1] 罗永峰[1] 

机构地区：[1]同济大学土木工程学院,上海200092

出　　处：《同济大学学报（自然科学版）》2006年第3期291-295,共5页Journal of Tongji University:Natural Science

摘　　要：基于索杆体系矩阵分析的基本理论,借助优化方法,提出了预应力索结构的位移控制方法.在保证预应力索结构各索段一定的预应力水平且不致松弛的情况下,通过改变结构中某些索段的长度,来达到控制节点位移的目的.此方法可应用于精密结构的形状控制.The method of displacement control of prestressed cable structures is proposed in this paper on the basis of the fundamental theorem of the member system by optimal algorithm. By altering the length of some structural members while keeping the prestress level above a given lower bound without relaxation, the nodal displacements of prestressed cable structure are controlled. This method can be applied to the shape control of precision structures.

关 键 词：预应力索结构 动(不)定 静(不)定 位移控制 

分 类 号：TU394[建筑科学—结构工程]