Discussion of the mechanism of vacuum preloading and settlement calculation based on measured values of pore water pressure

Measured values of pore water pressure in soil under vacuum preloading were analyzed.Action process of vacuum preloading was compartmentalized three phases.They were seepage consolidation in the upper part of the soil and"surcharge load"effect in deep soil by vacuum suction,consolidation stabilization in the upper part of the soil and transformation of"surcharge load"effect to"negative pressure"effect in deep soil,seepage consolidation in deep soil under"negative pressure"effect and to balance.A...