重载铁路圆柱形桥墩横向振动试验研究

随着我国既有铁路扩能运输的实施，运营列车的轴重以及载运量逐步增加给圆柱形桥墩带来了越来越严重影响，如墩顶横向振幅过大、冲击振动加剧等，严重影响了铁路桥梁的安全运营。以朔黄铁路圆柱形桥墩为研究对象，理论结合试验分析其加固前后在列车荷载增大的情况下桥墩的横向动力特性，研究不同运营列车作用下桥墩横向振动的规律，评价分析该圆柱形桥墩加固效果，为重载铁路圆柱形桥墩的加固研究和维护管理提供科学依据。

Experimental Study on Transverse Vibration of Heavy Load Railway Cylindrical Piers

With the implementation of heavy load railway transportation in China, increased operating train axle load and transport volume has brought more and more serious effect to the cylindrical pier, such as too large horizontal amplitude, severe impact vibration and so on, seriously affecting the safe operation of the railway bridge. In this paper, taking Shuohuang Railway cylindrical pier as the object of study, combining theory and experimental analysis of the transverse dynamic characteristics of bridge pier before and after reinforcement in the condition of increased train load. The pier transverse vibration under different train operation rules are studied to analyze and evaluate of the cylindrical pier reinforcement effect, and provide scientific basis for the strengthening and maintenance of heavy haul railway bridge piers.