建筑钢结构进展2013，Vol.15Issue(1)：37-44,8.
焊接残余应力对加强型节点力学性能影响研究
Influence Study of Welding Residual Stress on Mechanical Properties of Reinforced Joints
摘要
Abstract
Taking flange-plate reinforced joint and cover-plate reinforced joint as research objects, by means of birth-death element of ANSYS software,this paper simulates transient welding process and gets the distribution of residual stress field. Based on above analysis,the effects of residual stress on joints,load-displacement hysteretic behavior and brittle cracking pattern are analyzed according to two models with or without welding residual stress. The results show that welding residual stress affects the cover-plate reinforced joint more than the flange-plate reinforced joint,which often leads to the brittle fracture of the cover-plate reinforced joint on the fringes of the beam end butt weld, therefore,it is necessary to pay more attention and take preventive measures in design and practices.关键词
加强型节点/焊接残余应力/脆性断裂/滞回性能Key words
reinforced joint/welding residual stress/brittle fracture/hysteretic behavior分类
建筑与水利引用本文复制引用
刘芸,王燕,王薇..焊接残余应力对加强型节点力学性能影响研究[J].建筑钢结构进展,2013,15(1):37-44,8.基金项目
国家自然科学基金(51078194),第51批中国博士后科学基金(2012M511464),山东省博士后创新项目(201102040),《钢结构设计规范》国家标准管理组科研专项基金(GB500172010-18) （51078194）
