数值模拟大型三轴试验下的筋土力学特性

Numerical simulation of mechanical properties of reinforced soil under large-scale triaxial tests

采用有限元法模拟大型三轴试验下加筋土在固结不排水条件下的工作性状,并与未加筋土进行比较。将数值计算的数据绘制出的强度包络线与理论公式对应的强度包络线进行比较,验证数值计算的可靠性。将未加筋土与加筋土的强度包络线进行比较,突出不同围压下的加筋效果。

The finite element method(FEM) is used to simulate the behavior of reinforced soil under consolidated undrained condition under large-scale triaxial test,and compared with that of unreinforced soil. The strength envelope drawn from the numerical calculation data is compared with the strength envelope corresponding to the theoretical formula to verify the reliability of the numerical calculation. The strength envelopes of unreinforced soil and reinforced soil are compared to highlight the reinforcement effect under different confining pressures.