On the basis of actual project,the authors analyze and study the law of pore pressure dissipation in weak drainage-pile composite subgrade by using finite element calculation,and enduce the law of pore pressure with time in pile-bottom soils and the distribution of pore pressure under different loads,which is validated by actual observati.

The law of pore pressure dissipation in weak drainage-pile composite subgrade is analyzed and studied by using finite element calcula- tion,then the law of pore pressure with time in pile-bottom soils and the distribution of pore pressure under different loads are oh- mined,which are further validated by actual observation results.

There are two ways for pore pressure dissipation during earth body consolidation in finite elements.

With the help of numerical method it analyzes the data of pore water pressure vanishing test,which can increase the precision of the test and cut the expense of engineering investigation.

Research on dissipation of excess pore water pressure in one-dimensional finite strain consolidation of soft clays

Through monitoring ground settlement and dissipation of excess pore-water pressure,we studied the variation law of ground settlement and dissipation of excess pore-water pressure in different drainage and densification conditions,and analyzed the variation of physical and mechanical properties of soil before and after treatment.