高速铁路路基加固方案应用

Application of High-speed Railway Subgrade Reinforcement Plan

控制变形是高速铁路路基设计施工的关键。采用各种不同路基结构形式的首要目的是为高速线路提供一个平顺、均匀和稳定的轨下基础。路基是整个线路结构中最薄弱、最不稳定的环节,是轨道变形的主要来源。在长期受自然环境及荷载重复作用下,路基本体细颗粒流失及基底空隙增大,造成土体压缩沉降变形,轨道不均匀下沉,针对某高速铁路路基采取排桩及高桩板结构等加固措施,有效防止了高铁路基在运营期的沉降及位移变形,保证了线路的运营安全。

Controlling deformation is the key to the design and construction of high-speed railway subgrade.The primary purpose of adopting various types of roadbed structures is to provide a smooth,uniform,and stable underground foundation for high-speed lines.The roadbed is the weakest and most unstable link in the entire railway structure,and is the main source of track deformation.Under the long-term repeated effects of natural environment and loads,the loss of fine particles in the roadbed and the increase of base voids cause soil compression settlement deformation,and uneven settlement of the track.For a certain high-speed railway roadbed,reinforcement measures such as pile arrangement and high pile plate structure were taken to effectively prevent settlement and displacement deformation of the high-speed railway roadbed during operation,ensuring the safe operation of the line.