UNIAXIAL WAVE-PROPAGATION AND PORE PRESSURE GENERATION IN FLUID-SATURATED SANDS EXHIBITING IRREVERSIBLE COMPACTION

The propagation of a plane load-unload pulse through a compacting sand is analysed and illustrated for both dry sand and liquid saturated sa nd in undrained conditions. A major feature is the interaction between the initial loading wave and the faster following unloading wave. Fre e draining and undrained conditions exhibit distinct qualitative and q uantitative results, and the pore liquid pressure generation is a sign ificant physical feature. Illustrations show the effects of different applied surface pulse shapes. (C) 1998 John Wiley & Sons, Ltd.