立体预应力钢桁架优化设计及最优高度研究  

STUDY ON OPTIMIZATION DESIGN AND OPTIMAL HEIGHT OF SPACE PRESTRESSED STEEL TRUSSES

作　　者：关贤军[1] 陆歆弘[2] 康忠奎 黄鼎业[1] 

机构地区：[1]同济大学预应力研究所,上海200092 [2]上海大学国际工商与管理学院,上海201800 [3]深圳市洪涛装饰工程有限公司宁波办事处,宁波315010

出　　处：《工业建筑》2005年第z1期387-389,共3页Industrial Construction

摘　　要：以钢桁架结构的造价为目标函数,采用罚函数的方法,对倒三角形立体钢桁架及倒三角形立体预应力钢桁架计算模型进行优化设计。通过对大量计算结果的研究,得出了几种跨度下立体钢桁架及立体预应力钢桁架的最优高度。对于相对较小的荷载,可以找到立体钢桁架及立体预应力钢桁架的经济高跨比范围。By using Sequence Uncontrained Minimization Technique and having costs of steel trusses as objective functions, we optimized the computational models of nabla space steel trusses and nabla space prestressed steel trusses. By study of large amount of computational results, the optimal heights of space steel trusses and space prestressed steel trusses of several spans are got. For the relatively smaller loads, the economical height-to-span ratio scopes of space steel trusses and space prestressed steel trusses can be found.

关 键 词：预应力 立体钢桁架 优化设计 最优高度 

分 类 号：TU394[建筑科学—结构工程]