DETERMINING PARAMETERS OF DAMAGE MODEL OF SOFT SOILS USING MERCURY INTRUSION POROSIMETRY
利用压汞试验确定软土结构性损伤模型参数

Based on analysis on deformation mechanism of structured clay,the mercury intrusion porosimetry is applied to study the change of pore size distribution during the loss of structure strength of soft soils. Pore structure breakage potential is defined in terms of the evolution of the pore size distribution in different stress level,damage variable is defined and damage evolution equation is proposed accordingly. Then the masonry model is used to develop a method which determines the parameters of damage model of soft soils by using the results of mercury intrusion porosimetry. The comparison between results of triaxial compression test and that of computation shows that the method is applicable.