焊接铝合金压杆屈曲性能试验研究  

Experimental Study on Buckling Behavior of Welded Aluminium Alloy Compression Members

作　　者：吴芸[1] 张其林[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《建筑结构》2007年第12期110-113,共4页Building Structure

基　　金：建设部<铝合金结构设计规范>项目

摘　　要：铝合金焊接后除了产生残余应力外,在焊缝附近还将产生强度明显降低的热影响区。对贴角焊和剖口焊两种焊接方式的工字型铝合金中心受压杆件进行了试验研究,并将试验结果同即将颁布的国标《铝合金结构设计规范》及欧洲规范进行了比较。研究表明,通常情况下,对于贴角焊构件,规范结果和试验结果吻合较好;而对于剖口焊构件,规范结果偏保守。When Aluminium is welded, there will induce a heat-affected zone（HAZ） with drastically reduced strength near the welds besides the residual stress. Experimental study of longitudinally welded I-section Aluminium alloy columns subjected to axial compress is conducted. The test strengths are compared with the design strengths calculated by Code for Design of Aluminium Structures（draft） and Eurucode 9 for Aluminium structures （EC9）. Generally, the codes predict the strengths of the double T profiles with fillet welds columns well. While for the double T profiles with groove butt welds columns, the design strengths predicted by the two codes are conservative.

关 键 词：金属结构 铝合金 焊接 工字型 热影响区 屈曲 

分 类 号：TU522.3[建筑科学—建筑技术科学] U671.8[交通运输工程—船舶及航道工程]