MODEL TEST STUDY OF TREATMENT ON LIQUEFIABLE GROUND USING RESONANT COMPACTION METHOD

As a new way to deal with liquefiable foundation, resonant compaction method has already been applied to practical engineering. For the further study of treatment effect on liquefiable ground using resonant compaction method and the law of energy transfer in the resonance state, this paper mainly analyzes two different conditions of silts and sands by using laboratory model test. In this paper, the authors arrange sensors in the soil to monitor the changes of vibratory acceleration in soil layer. The test results show that the compactness of silts and sands foundation treated by resonant compaction method is greatly improved. At the same time, the effect of sands foundation is better than silts foundation. The effective reinforcement range of silts foundation using resonant compaction method is about 20cm. The effective reinforcement range of sands foundation using resonant compaction method is 20~30cm. Along the transverse direction, the energy transmission of silts and sands foundation is decreasing. Along the longitudinal direction, the energy transfer of silts foundation is the largest in the lower soil layer, is second in the upper soil layer, is the smallest in the middle soil layer. The energy transfer of sands foundation is the largest in the upper soil layer, is second in the lower soil layer, is the smallest in the middle soil layer.