EXPERIMENTAL STUDY ON DYNAMIC COMPACTION OF DIFFERENT ENERGY LEVELS OF RIPRAP RECLAIMED FOUNDATION

A dynamic consolidation scheme of 5000~6000 m kN·m energy level is proposed for a riprap reclamation foundation of an electric power project in Guangdong province. The dynamic compaction tests with different energy levels are carried out, and the results of dynamic compaction foundation treatment are compared by means of pore water pressure detection, surface deformation observation around tamping points, heavy-duty dynamic penetration test, Rayleigh wave test, plate load test, and so on. The comprehensive test results show that the dynamic compaction method is better suited to the treatment of riprap reclaimed foundation, and the performance of the treated foundation is improved obviously. At the same time, the effective reinforcement depth and the bearing capacity of the foundation under different energy levels are also found out. It provides the scientific basis for the follow-up large area construction.