重载铁路桥墩运营性能研究

Operation Performance Evaluation Study of pier Under the Condition of Heavy Load Railway Transportation

重载铁路运输线中桥墩类型多为圆柱型、圆端型以及矩形板型,随着重载铁路运输干线列车轴重以及载运量的增加,给桥墩也带来了许多不利影响,如横向振幅过大、振动加剧等,严重影响了线路运营安全。以圆柱型和圆端型桥墩为研究对象,通过理论计算并结合朔黄铁路多座桥梁运营性能试验,对两种类型桥墩横向振动特性进行了系统研究。

The mostly pier types in the transportation line of heavy haul railway are cylinder,circular end and rectangular plate.Increase of the carrying capacity and the train axle load of heavy haul railway have brought adverse affects to the piers,such as oversized lateral amplitude,intensified vibration and so on which have seriously affected the safety of operation.Taking the cylindrical and circular end shaped pier as the research object,this paper makes a systematic study on lateral vibration of those two types of pier through theoretical calculations combined with operational performance test of several bridges in Shuohuang railway.