焊接钢桥几个值得研究问题的探讨  

Discussion of the question about welding of steel bridge construction

作　　者：王元良[1] 陈明鸣[1] 孙鸿[1] 李兴中[1] 

机构地区：[1]西南交通大学,四川成都610031

出　　处：《电焊机》2009年第10期1-10,27,共11页Electric Welding Machine

摘　　要：根据钢桥研究中一些试验结果(大多未公开发表),总结分析焊接钢桥几个值得研究的理论问题,包括高速列车运行条件下桥梁焊接接头的力学行为、焊接接头韧性及其在断裂控制中的作用、焊接接头材质性能不均质性的分析和控制、结构的应力集中和材料的应力集中敏感性、焊接残余应力及其控制,以供今后钢桥焊接技术的发展作一参考。According to test results of steel bridge construction,this paper analyzes some theoritic questions researched worthily, including dynamic actions of welding joints, toughness of welding joint and its actions in fracture control, analysis and control of inhomogeneity of joints＇s material, stress concentration of structure and sensitivity of strss concentration of material, residual stress and its control on bridge construction under the high speed rail operation condition.The results researched can be, provided for reference to the welding technologies for steel bridge construction.

关 键 词：焊接接头韧性 焊接接头材质性能不均质性 材料的应力集中敏感性 焊接残余应力 

分 类 号：TU391[建筑科学—结构工程] TG407[金属学及工艺—焊接]