高强度钢材焊接H形构件受力性能的试验研究  

EXPERIMENTAL INVESTIGATION ON MECHANICAL BEHAVIOR OF HIGHSTRENGTH STEEL WELDED H-SECTION MEMBERS

作　　者：周锋[1,2] 陈以一[1,2] 童乐为[1,2] 吴旗[1] 潘春宇[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]同济大学建筑工程系,上海200092

出　　处：《工业建筑》2012年第1期32-36,共5页Industrial Construction

基　　金：科技部国家重点实验室基础研究项目(SLDRCE08-A-04);国家863计划项目(2007AA03Z505)

摘　　要：对高强度Q460钢材应用于高层和大跨度建筑的结构性能进行试验研究。首先对3根焊接H形柱进行试验,试验结果与国家规范设计值的对比表明,将Q460钢焊接H形柱划分为c类截面验算绕弱轴的整体稳定性是偏于安全的,但是划分为b类截面的安全性还需要补充数据并进行可靠度方面的分析。同时还对4根焊接H形构件进行拟静力反复加载试验。试验结果表明,高强度Q460钢构件在轴压和反复弯曲作用下,具有较好的延性和一定的耗能能力。It was presented an experimental investigation on structural behaviour of welded H-sections fabricated from high-strength steel sheet with a nominal yield stress of 460 MPa.A total of six tests were performed on high-strength welded H-sections subjected to axial compression force.The comparison of the test results with the design strengths calculated using the Chinese Code for steel structures showed that the long column design strengths predicted using the curve ＂c＂ specified in the Chinese Code were conservative,while the reliability of the design strengths predicted using the curve ＂b＂ needed to be assessed using reliability analysis.Furthermore,a total of four cyclic loading tests were conducted to study the hysteretic behavior of high-strength welded H-section beam-columns.The test result showed that the Q460 steel welded H-section beam-columns possed good ductility and a certain degree of energy dissipation capacities.

关 键 词：轴心受压试验 反复加载试验 高强度钢材 滞回性能 整体稳定 焊接H形钢柱 

分 类 号：TU391[建筑科学—结构工程]