高速铁路路基处理中预应力管桩桩筏结构的应用

The Application of the Pre-stressed Pipe Raft Structure to the High-speed Railway Roadbed

京沪高速铁路宿州站,地质条件较差,为保证高速铁路运行的高平顺性和铁路路基工后零沉降,车站路基地基处理采用了PHC预应力管桩桩筏结构。文中对该工程施工中的预应力管桩桩筏结构施工工艺进行了详细介绍,并给出了施工注意事项及施工经验数据,可为同类工程提供一定的实例参考。

The Suzhou Station of the Beijing-Shanghai High-speed Railway is located where the geological conditions are very poor, in which case pre-stressed PHC pipe pile raft structures are used to treat the foundation of the roadbed of the station to ensure the smoothness of the high-speed railway and no post-construction settlement of the railway roadbed. The construction techniques for the pre-stressed pipe pile raft structure are described in detail in the paper, with points for attention in construc- tion and empirical data of the construction presented. This paper may serve as a useful reference for other similar projects.