重载铁路轻型桥墩简支梁车桥耦合动力分析

某重载铁路多座桥梁采用轻型桥墩，运营中桥梁产生不同程度的横向异常振动问题，横向振幅超过限值，产生安全隐患。运用车一桥耦合动力性能计算的原理进行分析，明确了各项计算参数的取值，得到了车一桥耦合的动力性能，评定了桥梁的加固效果。检测表明，理论分析同试验结果相吻合，加固后横向振幅满足了《铁路桥梁检定规范》的要求。桥梁加固达到预期的效果。

Vehicle-bridge Interactions Dynamic Characteristics Analysis of Light Pier Simple Beam Bridge in Heavy Haul Railway

A heavy haul railway has adopted the light piers in many of its bridges. It is found in there is abnormal transverse vibrations of different degrees in the operation of the bridges, as the transverse swing exceeds the limit, causing hidden security dangers. The principle of vehicle-bridge interaction dynamic performance calculation is used to analyze, and all the computing parameters are determined. The vehicle-bridge interaction dynamic performance is achieved to appraise the reinforcing effect of the bridge. Tests show that the theoretical analysis and the tests results match each Other, the reinforced transverse swing meets the requirements in Railway Bridge Test Standards, and the reinforcement of the bridge is satisfactory.