VERIFICATION OF IMPROVEMENT EFFECT OF VIBRATIONAL COMPACTION METHOD WITH ABSORBING EXCESS PORE WATER PRESSURE AT GRAVELLY GROUND

Abstract

In-situ execution of soil improvement by vibrational compaction method with absorbing excess porewater pressure has been carried out for preventing the liquefaction of back-fill gravelly material (MASADO). The mechanism of ground improvement and the remarkable compaction effect of this method at gravelly soils were verified. The execution spacing became wider at the same target strength, this new method was cleared to be able to execute more economically and efficiently than the conventional one. Futher the accuracy of the suggested prediction method of improvement effect has been also confirmed.