铁路上承式钢板梁桥横向振动抑制方案研究  

Study of Options for Suppressing Transverse Vibration on Deck Type Steel Plate Girder Railway Bridge

作　　者：苏木标[1] 李建中[1] 梁志广[1] 

机构地区：[1]石家庄铁道学院交通工程系,河北石家庄050043

出　　处：《桥梁建设》2000年第3期14-19,共6页Bridge Construction

摘　　要：通过对目前抑制铁路上承式钢板梁桥横向振动的几种方案进行定性的分析和比较 ,认为 :静力加固方案可以使桥梁振幅有所减小 ,但不能避免准共振现象的发生 ,而且工程造价较高 ,施工也不方便 ;两桥连接方案减振效果明显 (减振率近 5 0 % ) ,比较经济也比较方便 ,但同样不能避免准共振现象的发生 ;动力减振方案 (MTMD抑振方案 )可以有效的抑制桥梁的准共振现象 (现场试验中减振率达 5 1.83% ) ,而且工程造价较低 ,施工简单。Based on qualitative analysis and comparison of several options for suppressing transverse vibration on deck type steel plate girder of railway bridge, conclusions are made as follows: with static reinforcing, the vibration amplitude can be suppressed to some extent, but quasi resonance of the bridge can not be avoided, moreover, the construction is inconvenient and costly. With option of two bridge connection, the effectiveness of vibration suppression is clear (the damping ratio approaches 50%) and it is fairly economic and easy, however, the quasi resonance of the bridge can not be avoided either. With dynamic option (MTMD option), the quasi resonance of the bridge can be effectively avoided (the damping ratio is up to 51.38% as tested in field), moreover, the construction cost is low, and the construction is simply and convenient.

关 键 词：上承式桥 铁路桥 钢板梁桥 横向振动抑制方案 

分 类 号：U448.13[建筑科学—桥梁与隧道工程] U441.3[交通运输工程—道路与铁道工程]