变截面H型钢柱相关屈曲性能研究  

RESEARCH ON INTERACTIVE BUCKLING BEHAVIOR OF TAPERED H-SECTION STEEL COLUMN

作　　者：杨娜[1] 乔磊[1] 陈爱国[1] 

机构地区：[1]北京交通大学土建学院,北京100044

出　　处：《低温建筑技术》2006年第5期33-37,共5页Low Temperature Architecture Technology

基　　金：国家自然科学基金资助项目(50308001)

摘　　要：采用板壳单元离散变截面H型钢柱,并同时考虑构件整体与局部初始缺陷、残余应力、材料屈服、几何非线性等因素的影响。根据数值分析的结果,重点研究了腹板宽厚比、腹板楔率、翼缘宽厚比、长细比等参数对板件局部屈曲与构件整体稳定的影响,总结了压力作用下变截面H型钢柱局部屈曲、整体屈曲和相关屈曲的发展过程以及影响因素。The non - linear finite element method for plate - shell structure is proposed to trace up whole - process analysis of tapered H - section steel column, while the effects of many factors on member such as residual stress, initial geometric imperfections and so on are focused. According to load- deformation curves resulted from numerical analysis, interactive buckling of tapered H - section steel column is discussed. The behaviors on local buckling and overall buckling brought by width - thickness ratio of web, tapered ratio, width - thickness ratio of flange, and slenderness are emphatically researched.

关 键 词：变截面H型钢柱 局部屈曲 极限承载力 

分 类 号：TU375.3[建筑科学—结构工程]