The replacement cushion method, usually used for treatment of shallower soft foundation, is used for treatment of mountain foundation to so lve such problems as inclination, undulation and uneven hardness etc.
In addition, in the process of design, calculation methods of width, thickness and strength of cushion are discussed in this paper. A few emphases in construction are also given. At last author further proves by actual example that soil replacement cushion method can obtain good economy benefit.
The bearing capacity of the foundation will come up to the intensity of design by dinging up the soft soil layer and filling it with non-corrosive material. The application of the cushion course method for removing soil in the project is summed up and analyZed. It showed that the method is hot only economic but also convenient and feasible,and it is used widely in the practical construction.