索承网壳结构的截面优化  

SECTION OPTIMIZATION OF CABLE-SUPPORTED LATTICE SHELLS

作　　者：李永梅[1] 张毅刚[1] 李雪松 

机构地区：[1]北京工业大学建筑工程学院,北京100022 [2]邢台建设集团,邢台054000

出　　处：《工业建筑》2007年第4期73-76,共4页Industrial Construction

基　　金：国家自然科学基金(50278004)资助项目;北京工业大学青年科研基金(97004012200501)资助项目。

摘　　要：根据索承网壳结构静力、稳定性分析特点,从适合索承网壳结构工程应用的角度出发,在考虑结构几何非线性基础上,提出用改进的离散变量两级优化方法来研究选定索力情况下的截面优化问题。该方法适用于同时具有应力约束、稳定性约束和位移约束的离散变量结构优化问题的计算。最后通过算例,验证该方法的正确性和有效性。According to the static and stable characteristics of cable-supported lattice shells, from the view of engineering application, based on geometrical nonlinearity, study has been made on section optimization under determined cable forces by means of improved two-level optimization method for discrete variables. Not only with stress and section size constraints it can be directly calculated, but also with stability and displacement constraints can it be dealt with by this method for the structural optimum design with discrete variables. Finally one example is analyzed, and the result shows that the presented method is accurate and efficient.

关 键 词：几何非线性 离散变量 两级优化方法 截面优化 

分 类 号：TU399[建筑科学—结构工程]