宽翼缘窄腹板冷弯薄壁型钢柱承载力分析  

Bearing Capacity Analysis of Cold-formed Thin-walled Steel Columns with Wide Flange and Narrow Web

作　　者：邵博 SHAO Bo(Department of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《福建建筑》2017年第11期48-52,共5页Fujian Architecture & Construction

摘　　要：取2种板厚、6种试件长、5种翼缘宽度的固支轴压构件进行非线性有限元分析,旨在分析上述参数对宽翼缘窄腹板冷弯薄壁卷边槽钢轴压构件承载力和屈曲模式的影响。结果表明:不同翼缘宽度的此类构件极限承载力与其长度成反比。翼缘宽厚比和翼缘宽度与腹板宽度的比值(B/H)对此类构件的极限承载力和失效模式具有显著影响,并且承载力的变化趋势具有一定的规律性。设计时建议采用B/H=1.2的此类截面构件。Based on the finite element analysis method,the members of two different thicknesses,six column lengths,five flange dimensions,fixed-ended boundary conditions were selected to be studied by nonlinear finite element analysis under concentric compression loading in this paper The ultimate bearing capacity and buckling mode of the members were obtained by finite element procedure,in order to investigate the influence of the above parameters on ultimate bearing capacity and failure mode of cold-formed thin-walled steel lipped channel columns with wide flange and narrow web under axial compression It is shown that the ultimate bearing capacity of such members with different flange widths is inversely proportional to their length The ratio of the width to the thickness concerning the flange and the ratio of the width of the flange to the width of the web concerning the specimen(B/H)have a significant effect on the ultimate-bearing capacity and failure mode of such members,and the trend of bearing capacity has a certain regularity It is suggested that this kind of section member should adopt B/H=12while designing

关 键 词：宽翼缘窄腹板槽钢 轴心受压构件 极限承载力 非线性有限元分析 

分 类 号：TU3[建筑科学—结构工程]