Study on Flexible Load Test of the CFG Pile Composite Foundation of High-Speed Railway

There are two forms of subgrade foundation: rigid foundation and flexible foundation.At present,rigid pressure plate load test is the common method for quality inspection of CFG pile.However,this test method has some disadvantages.In this paper,research is carried out on the characteristics of flexible load,and this test method is applied to the composite foundation with flexible load.Through the field test of CFG pile composite foundation in high-speed railway,the settlement deformation and load sharing ratio of pile and soil are also studied.