门式刚架的参数优化及设计建议  

Parameters Optimum and Design Suggestion for Portal Frames

作　　者：王万祯[1] 孙玉萍[1] 虎彦政[1] 

机构地区：[1]兰州理工大学土木工程学院,兰州730050

出　　处：《建筑科学》2005年第6期69-72,共4页Building Science

基　　金：甘肃省自然科学基金(项目批准号:GS022-A52-083);兰州理工大学科研发展基金(项目批准号:SB04200408)

摘　　要：根据设计经验和规范的建议,本文选取了门式刚架的常用建筑尺寸和梁柱形状,在满足规范对门式刚架强度、刚度和稳定的前提下,以单位面积用钢量最小为优化目标,对影响刚架用钢量的主要离散参数(如结构形式、荷载、柱距、跨度、高度、坡度和梁柱构件等)进行了优化分析和设计。根据分析结果,提出了结构的最优布置及诸参数的建议取值,以供设计参考。Based on the experiences of design and the suggestion of specification, the architecture dimensions of portal frames and shapes of their beams and columns were chosen in the article. The optimum design of primary discrete parameters, such as, loads, distance between columns, span, height of columns, gradient of beams, figures of beams and column, which affect the steel weight, was carried out with the least steel weight per unit area as the target and with the restrictions on strength, rigidity and stability for portal frames satisfied. Based on the results of analysis, the article brings forward the suggestion values for the above parameters and the optimum shapes of portal frames for reference in design.

关 键 词：门式刚架 优化设计 用钢量 离散参数 

分 类 号：TU392[建筑科学—结构工程]