| 钢箱梁横隔板-U肋交接处割焊残余应力分析 |
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| 引用本文： | 李传习,熊永明,陈卓异,柯璐,宋钢兵. 钢箱梁横隔板-U肋交接处割焊残余应力分析[J]. 桥梁建设, 2019, 0(5): 27-32 |
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| 作者姓名： | 李传习 熊永明 陈卓异 柯璐 宋钢兵 |
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| 作者单位： | 长沙理工大学桥梁工程安全控制教育部重点实验室;休斯顿大学 |
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| 基金项目： | 国家自然科学基金项目（51708047,51778069）;湖南省自然科学基金项目（2019JJ50670）;长沙理工大学土木工程优势特色重点学科创新性项目（18ZDXK11）~~ |
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| 摘 要： | 为研究钢箱梁正交异性桥面板横隔板与U肋交接处的残余应力分布规律,采用Abaqus有限元软件模拟横隔板的热切割和焊接过程,分析横隔板与U肋交接处热残余应力的分布特征,探讨切割速度和焊接速度对横隔板弧形切口处残余应力的影响。结果表明:横隔板弧形切口处产生切向残余拉应力,其值超过钢材屈服强度;焊接在横隔板与U肋焊接区局部范围引起沿焊缝方向的残余拉应力,且焊缝尾端的应力集中更为明显;弧形切口残余应力区宽度随切割速度的增加而减小,残余拉应力随焊接速度的增加而增大;选用较快的横隔板切割速度和较慢的焊接速度可减小弧形切口处残余应力分布宽度和应力值。
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| 关 键 词： | 钢箱梁 正交异性板 横隔板 焊接 热切割 残余应力 有限元法 |
Analysis of Cutting and Welding Residual Stresses in Joints of Diaphragms and U-Ribs of Steel Box Girder |
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| LI Chuan-xi,XIONG Yong-ming,CHEN Zhuo-yi,KE Lu,SONG Gang-bing. Analysis of Cutting and Welding Residual Stresses in Joints of Diaphragms and U-Ribs of Steel Box Girder[J]. Bridge Construction, 2019, 0(5): 27-32 |
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| Authors: | LI Chuan-xi XIONG Yong-ming CHEN Zhuo-yi KE Lu SONG Gang-bing |
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| Affiliation: | (Key Laboratory for Safety Control of Bridge Engineering, Ministry of Education, Changsha University of Science & Technology, Changsha 410114, China;University of Houston, Houston 77204-4006, USA) |
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| Abstract: | LI Chuan-xi;XIONG Yong-ming;CHEN Zhuo-yi;KE Lu;SONG Gang-bing(Key Laboratory for Safety Control of Bridge Engineering, Ministry of Education, Changsha University of Science & Technology, Changsha 410114, China;University of Houston, Houston 77204-4006, USA) |
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| Keywords: | steel box girder orthotropic steel deck diaphragm welding thermal cutting residual stress finite element method |
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