蛇行激振频率对铁路钢板梁桥横向振动的影响

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.

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

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.