神朔线朱家川9号大桥运营性能试验分析

The test and analysis on operation performance of Zhu Jiachuan No.9 bridge of Shenshuo line

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 tes-ting the vibration characteristics of train power, determined the actual working state of the bridge, the results showed that the vibration character-istics 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.