重载运输条件下桥梁横向振动控制措施

Measures to Control Lateral Vibration of Bridge for Heavy Haul Transport

随着我国重载运输的持续发展,列车编组增加、车辆轴重增大、运营密度增大,现役部分桥梁出现不同程度横向振动超限现象,对行车安全造成一定影响。以朔黄铁路4种典型墩梁体系为研究对象,对墩梁体系横向振动控制技术进行研究。结果表明:桥墩横向刚度对桥跨结构横向振动影响较大,对墩梁同时进行加固在控制桥跨结构横向振幅、提高桥梁整体横向刚度方面效果明显。

Along with the continuous development of heavy haul transport in China, train formation is enlarged, axle load is increased and operation interval is reduced, some bridges in service are suffering from excessive lateral vibration, which endangers operation safety. The author focuses on four typical pier-girder systems on Shuohuang Railway and researches technologies to control lateral vibration. The results show that lateral rigidity of pier have great influence to lateral vibration of bridge, and strengthening both pier and bridge has remarkable effect on controlling lateral vibration and improving integral lateral rigidity.