| 焊接残余应力对铁路钢桥焊缝区域危险点列车振动动应力影响的研究 |
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| 引用本文： | 刘嘉,瞿伟廉,何钟山,何杰.焊接残余应力对铁路钢桥焊缝区域危险点列车振动动应力影响的研究[J].地震工程与工程振动,2011,31(1):89-94. |
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| 作者姓名： | 刘嘉 瞿伟廉 何钟山 何杰 |
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| 作者单位： | 武汉理工大学道路桥梁与结构工程湖北省重点实验室,湖北,武汉,430070 |
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| 基金项目： | 国家自然科学基金重点项目，中央高校基本科研业务费专项资金资助 |
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| 摘 要： | 本文研究了焊接残余应力对铁路钢桥焊缝区域危险点列车振动动应力的影响.文中,以铜九线鄱阳湖铁路钢桁架桥梁为研究背景,采用符合电弧焊的双椭球热源模型,模拟出桥梁焊缝区域的焊接残余应力分布情况;旧时叠加上铜九线鄱阳湖铁路钢桁架桥与焊缝节点连接的构件在列车过桥时的实测动应力,并将其施加在桥梁节点精确有限元模型上,分析得出在不同...
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| 关 键 词： | 焊接 残余应力 危险点动应力 列车荷载 铁路钢桥 |
Research on influence of residual stresses on vehicle vibration dynamical stresses in welding joint districts of railway steel bridge |
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| LIU Jia,Qu Weilian,HE Zhongshan,HE Jie.Research on influence of residual stresses on vehicle vibration dynamical stresses in welding joint districts of railway steel bridge[J].Earthquake Engineering and Engineering Vibration,2011,31(1):89-94. |
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| Authors: | LIU Jia Qu Weilian HE Zhongshan HE Jie |
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| Institution: | LIU Jia,QU Weilian,HE Zhongshan,HE Jie(Wuhan University of Technology,Hubei Key Laboratory of Roadway Bridge and Structure Engineering,Wuhan 430070,China) |
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| Abstract: | The influence of residual stresses on vehicle vibration dynamical stresses in welding joint districts of railway steel bridge is investigated in the paper.Based on the Poyang Lake railway steel truss bridge located in railway line Tonglin to Jiujiang,adopting the double ellipsoidal distribution heat source model to match the electrical welding,the distribution of residual stresses of welding joint districts of railway steel bridge is simulated.Meanwhile,we superpose the actual measured dynamical stresses of... |
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| Keywords: | welding residual stress dynamical stress at critical joints vehicle loads railway steel bridge |
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