神朔线朱家川9号大桥运营性能试验分析

摘要

以神朔线图号为专桥2059的32 m简支梁桥为研究对象,通过测试列车动力振动特性,判断了该桥当前的实际工作状态,结果表明,桥梁上部结构振动特性均在规范规定范围内,3号桥墩墩顶横向振幅值略大于规范规定的通常值,说明该桥基本能够满足目前的运输需求,但是在开行较大轴重货车时建议进行加固处理.%Taking the 32 m simple supported girder bridge of Shenshuo line drawing number for special 2059 as the research object,through testing the vibration characteristics of train power,determined the actual working state of the bridge,the results showed that the vibration characteristics of bridge superstructure within specification scope,the lateral amplitude value of No.3 pier top slightly larger than the standard value,the bridge could meet the transportation demand,but suggested that the reinforcement treatment in the opening line of large truck axle.