DYNAMIC CONSOLIDATION METHOD AND DYNAMIC CONSOLIDATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a dynamic consolidation method and a dynamic consolidation device capable of promoting work efficiency of ground compaction by sufficiently and efficiently making use of drop energy of a hammer and also prolonging the life of the device. SOLUTION: A winch 41 for winding up and down a wire rope 42 is provided in a crane 11. A dynamic consolidation hammer 41 is tied to the front end side of the wire rope 41. A buffer weight 45 is mounted to a site higher than the hammer 47 and holding a relative interval to the hammer 47 is mounted to the front end side of the wire rope 41. In a drop-step after a hang-up step, brakes are applied on the winch 41 before the buffer weight 45 comes into collision with the hammer 47 after the hammer 47 reaches the ground, and the idle drawing out of the wire rope 42 and the drum idle running the winch 41 are prevented.