蛇行激振频率对铁路钢板梁桥横向振动的影响  

Influence of hunting frequency to lateral vibration of deck steel plate bridges

作　　者：秦爱红[1] 

机构地区：[1]青岛理工大学琴岛学院土木工程系,青岛266106

出　　处：《青岛理工大学学报》2014年第2期30-33,共4页Journal of Qingdao University of Technology

摘　　要：针对我国铁路货车提速过程中出现的铁路上承式钢板梁横向振幅严重超限现象,将轮对蛇行波作为激励源,探讨了其频率对铁路钢板梁桥横向振动的影响.结果表明,当蛇行激振频率与桥梁横向固有频率接近时,列车桥梁发生横向共振,横向振幅最大.Since the speeds of the train were raised, the results of field tests of some deck steel plate girder bridges have found a heavy lateral response amplitude exceeding the anticipation value under the freight train. In this paper, numbers of analysis are carried out for the influ- ence of hunting wave to the lateral vibration of the deck steel plate bridges under input of random artificial hunting waves. The result shows that the heavy lateral vibration response is due to the hunting frequency coinciding with loaded frequency of the girder.

关 键 词：钢板梁桥 激振频率 横向振动 轮对蛇行波 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]