土工格室是一种新型建筑材料，广泛地应用于软土路基处理当中。结合预应力管桩＋土工格室在客运专线铁路软土地基处理中的应用情况，对其特性、作用机理、计算及施工方法进行了较详细的介绍。该处理方式对于提高地基承载力、限制地基侧向变形、控制软土路基的不均匀沉降方面能取得较好的效果，从而为软土路基处理提供一种新的思路。

Geocell is a kind of new construction material, which is widely used in the treatment of soft subgrades. On basis of the application of "prestressed concrete pipe pile + geocell" in the consolidation of the soft subgrades of passengerdedicated railways, the paper makes a detailed presentation of the features, working mechanisms, calculation methods and construction methods of "prestressed concrete pipe pile + geocell". The presented consolidation method has achieved good effects in improving the subgrade's loadbearing capacity, minimizing the subgrade's lateral deformation and controlling the soft subgrade's differential settlement. The paper provides a new concept for the treatment of soft subgrades.