高速铁路大跨度桥梁温度作用下轨道静态平顺性能分析

以南广铁路主跨450 m的西江特大桥为工程背景,结合工务部门的轨道实测高程数据,对西江桥的轨面静态不平顺进行分析。结果表明,较大的温度变形并不是造成轨道静态尺寸不达标的原因,只要在轨道精调阶段摸清桥面温度变形特点,控制好轨道调整精度,就可以满足轨道高低偏差管理值要求。

Static Irregularity Analysis of High-speed Railway Long-span Bridge Track under Temperature Load

With reference to Nan- Guang railway Xijiang bridge of 450 m main span and based on the data of the railway track elevation measured by the works department,this paper studies the Xijiang bridge track static irregularities. The results show that the bigger temperature deformation accounts nothing for the failure to meet track static dimension standard and the track elevation can be controlled once the bridge deck deformation characteristics are investigated during track adjustment phase and track adjustment precision is controlled.