奥氏体不锈钢焊接工字型截面轴压构件整体稳定性能试验研究  

Experimental study on the overall buckling behavior of austenitic stainless steel welded I-section columns under axial compression

作　　者：杨璐[1] 徐东辰 尚帆[1] 王元清[3] 张勇[2] 

机构地区：[1]北京工业大学,北京100124 [2]北京交通大学,北京100044 [3]清华大学,北京100084

出　　处：《土木工程学报》2015年第11期9-15,共7页China Civil Engineering Journal

基　　金：国家自然科学基金(51108007);中国博士后科学基金面上项目(2013M530500)

摘　　要：为了研究奥氏体不锈钢材料的轴心受压构件的整体稳定性能,对11根奥氏体型不锈钢焊接工字形截面试件进行了轴心受压试验研究,其中5根采用强轴失稳模式,6根采用弱轴失稳模式。根据试验前测量得到的试件的几何初弯曲和试验过程中量测得到的荷载初偏心,分析了该类型构件的失稳模态和整体稳定性能承载能力,并将试件的试验数据计算结果与现行欧洲不锈钢结构规范和中国钢结构规范进行了对比,表明欧洲不锈钢规范偏保守,而中国钢结构规范较不安全。In order to study the overall buckling behavior of the austenitic EN 1. 4301 stainless steel I-section columns under axial compression,11 full-scale specimens,among which five were considered in strong-axis buckling mode and six were considered in weak-axis buckling mode,were tested. According to the initial geomeric curvature measured before the test and the initial load eccentricity measured during the test,the failure mode and the overall buckling capacity of all column specimens were analyzed. By comparing the calculated results with those based on current European steel structure design code（ EN 1993-1-4） and Chinese steel structure design code（ GB 50017—2003）,it is shown that the design according to EN 1993-1-4 is generally more conservative,while the design according to GB50017—2003 could be unsafe.

关 键 词：不锈钢 焊接工字形截面 轴压柱 整体稳定 承载性能 

分 类 号：TU391[建筑科学—结构工程]