高速铁路无砟轨道桥梁顶升平移纠偏技术研究

Research on the Technology for Bridge Jacking-up and Reposition of High-speed Railway Ballastless Track

软土地区,外部环境的变化易造成高速铁路桥梁的下沉和偏移,严重时会对列车的运行安全会构成威胁。为了使出现变位的桥梁恢复原设计线形,确保高速铁路列车的运行安全与运行品质,须对已变位桥梁的空间位置进行纠正。本文根据高速铁路桥梁的结构特征和运输安全管理相关规定,针对施工期间列车运行不能中断的前提条件,对桥墩的纠偏措施进行可行性研究,并以工程案例加以验证,研究结果对高速铁路桥梁的纠正施工有一定的指导意义,可为同类桥梁施工提供参考与借鉴。

In soft soil areas,the change of external environment is easy to cause the subsidence and deviation of high-speed railway bridges,which will pose a threat to the safety of train operation.In order to restore the original design line shape of the displaced bridge,and ensure the safety and quality of the high-speed railway train operation,the space position of the displaced bridges must be corrected.According to the structural characteristics of high-speed railway bridges and the relevant regulations of transportation safety management,in view of the preconditions that the train operation cannot be interrupted during construction,this paper studies the feasibility of rectification of the pier,and verifies them with engineering cases,which has a certain guiding significance of rectification construction of high-speed railway bridges,it can be used as reference for similar bridge construction.