下穿高速铁路框架桥顶进施工线路加固技术探索

Exploration on Reinforcement Technology of Jacking Construction Line of Frame Bridge Underpassing High-speed Railway

在进行永前路下穿高速铁路—柳南客运专线框架顶进铁路线路加固时,通过采用D型施工便梁、设置预应力砼横抬梁作为便梁支撑等线路加固的技术创新,在满足了高速铁路安全稳定运行要求的同时,也尽量减少了营业线上施工的工序,加快了施工进度、降低了施工成本,减少了对高速铁路正常运营的影响,确保施工安全顺利进行。上述线路加固的技术创新值得推广应用。

In the reinforcement of frame jacking line of Yongqian Road underpassing high speed railway,the technical innovation of the line reinforcement by using the D-type construction beam and the prestressed concrete transverse beam as the beam support is adopted.While meeting the requirements for safe and stable operation of high-speed railways,it also minimizes the construction process on the business line,speeds up the construction schedule,reduces the construction cost,reduces the impact on the normal operation of the highspeed railway,and ensures the safe and smooth construction.The technical innovation of the above line reinforcement is worthy of popularization and application.