真空堆载预压下软基的孔压计算与固结分析

Pore water pressure is a very important aspect in the process of consolidation. In this paper, the author summarizes a fitting equation to calculate the excess pore water pressure on a certain point of the foundation based on the formula of measured pore pressure changes, and deduces the consolidation degree equation based on excess pore water pressure from last equation. The result shows that, this fitting equation can truly reflect change of excess-pore pressure in vacuum-surcharge preloading project; and the consolidation degree calculated from fitting equations of pore water pressure is close to that of subside calculation. However, this equation is not suitable to calculate the consolidation degree in a relatively short period after surcharge completion.