半穿式桁梁桥横向动力性能及其改善措施的研究  

Investigation on Lateral Dynamics Behaviour of Half Across Steel Truss Bridge and Its Reinforcing Measures

作　　者：吴定俊[1] 马坤全[1] 

机构地区：[1]上海铁道大学

出　　处：《铁道学报》1998年第4期86-92,共7页Journal of the China Railway Society

基　　金：铁道部科技司1995年;1997年科研项目

摘　　要：依据提速线（京沪）上现场测试结果和车桥耦合振动理论，分析了既有线提速后４４ｍ半穿式桁梁桥横向振动问题，结果均表明，提速客车通过该桥横向刚度仍能满足要求；提速货车横向刚度明显不足。同时提出提高横向刚度的几种措施并分析其作用效果。In this paper ,the lateral rigidity of the half across steel truss bridge with 44 m span in the existing railway line is investigated with both the field test and the vehicle bridge coupling viberation theory.The results show that the lateral rigidity of the bridge is satisfactory while the passenger trains pass through it at raising speed and is lack while the freight trains pass through it at higher speed.Several reinforcing measures are presented and their effectiveness is analysed.

关 键 词：半穿式 桁梁桥 提速 横向动力性能 铁路桥 振动 

分 类 号：U448.131.3[建筑科学—桥梁与隧道工程]