斜拉网架多阶段加载内力分析方法的研究  

Mechanical analysis of cable-stayed space grids with multi-step-loading

作　　者：刘树堂[1] 

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》2008年第4期79-84,共6页Journal of Guangzhou University:Natural Science Edition

基　　金：广州市属高校科技计划项目(62049)

摘　　要：系统介绍了斜拉网架结构内力分析方法.把塔柱简化为空间刚架单元,把网架杆件简化为空间桁架单元,对斜拉索采用等效线性空间单元.假设塔柱与网架连接处的横截面为刚性平面,据此建立"变形协调转换矩阵",使塔柱总节点刚度矩阵与网架总节点刚度矩阵耦合在一起,建立斜拉网架结构刚度矩阵.对一个"四塔柱正交斜放四角锥斜拉网架"进行了计算分析,验证了文中方法的正确性和有效性.The paper introduces the analysis method of the internal force of cable-stayed space grid. The tower column is simplified as frame element, the grid member as truss element, and the stayed cable is reduced to equivalent linearization element. Deformation matrix of the connection between the frame element and truss element is established, by which the frame structural stiffness matrix and the truss matrix are combined and the iteration matrix formula is found. ＂The four-column -supported stayed cable grid＂is analyzed, so that the correction and effect of the proposed method and the working behavior of the stayed-cable grid are verified.

关 键 词：斜拉网架 斜拉索 网格结构 空间桁架 

分 类 号：TU356[建筑科学—结构工程]