张弦梁初始形态分析的索刚度更新方法  

RENEWAL METHOD OF CABLE STIFFNESS FOR INITIAL SHAPE ANALYSIS OF STRING BEAMS

作　　者：戴纳新[1] 黄东阳[2] 郭健[3] 

机构地区：[1]华南农业大学工程学院,广州510640 [2]哈尔滨工业大学深圳研究生院,深圳518055 [3]湖南大学土木工程学院,长沙410082

出　　处：《工业建筑》2007年第11期91-93,共3页Industrial Construction

摘　　要：由于张弦梁结构的几何非线性特点,施加预应力后的工作状态与构件放样尺寸有较大的差别,应用有限元法,在从工作状态迭代到零应力状态的过程中不断更新索单元的刚度矩阵,以便于引入预应力,并将形态分析与荷载分析统一。典型算例的分析表明,该方法计算简便,精度较高。There will be a greater difference between the working state after applying prestress and the set-out size of the members for a string beam structure due to its nonlinear characteristics. Using FEM the stiffness matrix of a cable element is replaced continuously during the process to zero-stress state from the working state in order to lead in prestress, so as to unify the shape and load analyses. The analysis of a typical example shows that the method features a simple calculation and a higher precision.

关 键 词：张弦梁 索 索刚度 

分 类 号：TU399[建筑科学—结构工程]