土质边坡渐进破坏数值模拟与模型试验研究

Used finite element theory to establish the analytical model of the progressive on the soil slope，and used the FORTRAN90 to program to simulate numerically. After building the flexibility stress field, usd Drucker - Prager yield to determine the various units, according to the relevant principles of elastic-plastic mechanics, the excessive stress of the damage cells have been assigned to the peripheral units, and dealed with the strength of damage cells, to find out the progressive damage zone of the slope model. Through the calculation and analysis about an example, indicated that analysis model made in this article, and could use this program to forecast the location of slip strip on soil slope and simulate the destructive process of the slope. Used sandy samples on the plane model shelves to build a small percentage similar geometry model of the slope,and put up the indoor physical similar simulation test to contrast with the result of the numerical simulation,and to verify that the destructive process of the slope is indeed a gradual process, and good agreement with the results of the numerical simulation, and also show that the exploitation of the finite element analysis program is correct.