单层短程线网壳的优化设计  

Optimum Design of Single-Layer Shell of Godesic

作　　者：支荣权[1] 于永彪[2] 鹿晓阳[1] 

机构地区：[1]山东建筑大学工程力学研究所,山东济南250101 [2]山东司法警官职业学院,山东济南250101

出　　处：《山东交通学院学报》2011年第1期77-81,共5页Journal of Shandong Jiaotong University

摘　　要：以短程线网壳的总质量为目标函数,以网壳的网格数、矢高、杆件截面面积和节点体积作为优化设计变量,采用一维搜索法与相对差商法相结合的序列两级优化方法进行截面优化设计。对不同跨度、不同矢跨比和不同网格划分密度的多个单层短程线球面网壳结构进行了计算,用回归分析法得出网壳最优网格划分数量、矢跨比、杆件截面面积和节点体积。The total weight of short-line shell has been taken as objective function, the number of grid shell, vector high, bar-sectional area and volume have been taken as the design variables node and uses cross-section level optimization which combines one-dimensional search method and the relative difference quotient sequence to optimize cross-section. Different spans and different span ratio and the number of different mesh density single short line of spherical shell structure are calculated and regression analysis is used to get the optimal mesh shell number, span ratio, rod-sectional area and node size.

关 键 词：单层短程线球面网壳 优化设计 一维搜索法 相对差商法 

分 类 号：TU365[建筑科学—结构工程]