双向偏心受压H型截面构件弯扭屈曲稳定极限承载力研究  

STABILITY ULTIMATE CARRYING CAPACITY OF H-COLUMNS UNDER BIAXIAL LOADING

作　　者：蔡春声 王国周[1] 

机构地区：[1]清华大学

出　　处：《土木工程学报》1991年第2期37-47,共11页China Civil Engineering Journal

摘　　要：本文对16根H型截面试件进行了双向偏心受压弯扭屈曲试验研究。利用影响系数矩阵法编制了考虑初始变形、残余应力以及柱端翘曲条件影响的理论计算程序,分析了初始变形等因素对双向偏心受压柱性能的影响,并对钢结构设计规范GBJ17-88中压弯构件稳定设计公式进行了讨论。This paper presents the experimental and theoretical studies on the ultimate carrying capacity of welded H-columns loaded biaxially. In the experimental investigation, sixteen specimens were tested under biaxial loading to determine their ultimate carrying capacity and their deformation responses. Based on the influence coefficient matrix method,an incremental computer program for theoretical analysis,considering the effects of initial deformation, residual stress distribution and warping restraint condition at the end of columns, has been developed. There are good agreements between the theoretical calculation and test results.With the help of this program,detail discussions of the effects of initial deformation,residual stress, warping condition,as well as torsional deformation on the behavior of biaxially loaded columns have been conducted, and the reasons have been explained. Finally, the stability design formulas of compression members under biaxial bending suggested in the Specification for Design of S eel Structures GBJ17-88 have been discussed.

关 键 词：偏心受压 构件 极限 承载力 屈曲 

分 类 号：TU312.1[建筑科学—结构工程]