不等截面三肢格构式钢管混凝土柱的换算长细比计算  

Equivalent slenderness ratio of three-legged built-up composite columns with different CFST cross-sections

作　　者：陈华[1] 

机构地区：[1]福建省建筑科学研究院,350002

出　　处：《福建建筑》2010年第2期50-51,33,共3页Fujian Architecture & Construction

摘　　要：根据弹性稳定理论,同时考虑弯矩和剪力对结构临界荷载的影响,推导了不等截面三肢格构式钢管混凝土柱的换算长细比,并进行了适当的简化,可供工程设计人员参考。According to the theory of elastic stability, equivalent slenderness ratio of three--legged built--up composite columns is deduced, where the main components are concrete--filled steel tubular （CFST） columns with different cross--sections. To obtain more precise results, both deformation effects resulting from bending moment and shearing force are considered. Finally, simplified formulae are put forward, which can he used for structural design.

关 键 词：格构柱 钢管混凝土 换算长细比 弹性稳定 

分 类 号：TU311.4[建筑科学—结构工程]