铁路既有线大跨度框架顶进施工时线路加固技术

Line Reinforcement Technology during Jacking Construction of Large-span Frame on Existing Railway Line

在下穿铁路双线大跨度框架斜交顶进时,因施工条件困难,常规扣轨纵横梁法加固线路无法满足施工要求。经详细勘察现场和技术创新,科学制定线路加固方案,采取D型施工便梁+孔桩支墩对线路进行两阶段加固,顺利完成本项目的顶进施工,确保了广大铁路的安全运营。

When under-crossing the railway double-track long-span frame skew jacking,due to the difficult construction conditions,the conventional buckle-track vertical and horizontal beam method cannot meet the construction requirements.After detailed site survey and technological innovation,the route reinforcement plan was scientifically formulated,and the D-shaped construction beam+hole pile buttress was adopted to strengthen the line in two stages.The jacking construction of this project was successfully completed,which ensured the safe operation of Guangda Railway.