高建钢厚壁H型钢残余应力测试研究  

Investigation on Residual Stress Distribution for H-Section Column of High-Rise Structural Steel with Heavy Thickness

作　　者：李元齐[1] 孙思[1] 沈祖炎[1] 徐宏伟[2] 于成峰[2] 

机构地区：[1]同济大学建筑工程系,上海200092 [2]宝山钢铁股份有限公司,上海201900

出　　处：《建筑钢结构进展》2010年第5期19-24,共6页Progress in Steel Building Structures

摘　　要：近年来,国产高性能建筑结构用钢由于其优良的力学性能,特别是强度对厚度的不敏感性,在国内大跨和高层建筑钢结构中得到了越来越多的应用,但现行相关设计规范中仍缺乏其基于设计可靠度分析的合理设计指标。高建钢常用作厚壁H型钢柱,其残余应力分布对构件承载力影响较大,是分析高建钢基本构件设计可靠度的关键因素之一。本文采用条形切割法,对80mm厚高建钢Q345GJ焊接H型钢的纵向残余应力分布进行了详细的测试试验研究。根据试验数据,得到80mm厚高建钢Q345GJ焊接H型钢残余应力分布图,明确了高建钢厚壁焊接H型钢的残余应力分布规律,为高建钢构件设计可靠度分析提供了基础数据。In recent years, due to its excellent mechanical properties, especially its insensitivity of strength to thickness, high-rise structural steel with high performance made in China was applied more and more widely in large-span and high-rise steel building structures. However, there are no reasonable design indexes based on design reliability analysis for the new material in the relevant national standards. The high-rise structural steel was often used as H-section column with heavy thickness presently, and its residual stress distribution had significant influence on load-carrying capacity, which was one of the critical factors in reliability analysis of elementary members using the high-rise structural steel. In this paper, with the block sectioning method, a detailed test investigation on the longitudinal residual stress distribution for H-section column of Q345GJ high-rise structural steel with thickness of 80mm is introduced. The contour of residual stress distribution based on test was presented, and the law of the residual stress distribution of such a column was discussed. It will provide some basic data for reliability analysis of the structural members using the high-rise structural steel.

关 键 词：高建钢 厚壁焊接H型钢 残余应力分布 条形切割法 

分 类 号：TU391[建筑科学—结构工程]