The influences of train vibration upon concrete of expressway bridge girders spanning railway line during casting of the concrete are a problem that cannot be neglected.
跨越铁路的高速公路桥梁在灌筑混凝土期间列车振动对桥梁梁体混凝土的影响是一个在施工中不容忽视的问题。
The transverse stiffness of medium-span railway bridge becomes insufficient and its transverse vibration becomes larger commonly under the raised speed freight train.
中等跨度铁路桥梁在提速货车作用下，普遍出现横向刚度不足，横向振动超限问题，严重影响了运营安全和提速计划的顺利实施。
By examining the test results of vibration for a few Bridges, it is found that train formation has a strong effect on bridge vibration responses.
通过对两座桥梁振动测试结果的分析，发现列车编组对桥梁振动响应很有影响，且这一现象过去常常被忽略。
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