Abstract
We estimated the seismic stability of slope by comparing the findings of conventional circular slip calculation with those of pseudo-static elasto-plastic finite element analysis. For a homogeneous slope with simple shape, the result using the critical horizontal seismic coefficient and maximum shear strain distribution obtained by finite element analysis, exhibited agreement with the one of circular slip calculation. On the other hand, in the case of slope with the complex shape, the indefinite circular slip surface was obtained by using the circular slip calculation. However, the finite element analysis simulated the realistic failure surface applicable to the practical design. The centrifuge pseudo-static tilting model test reproducing the seismic effect was carried out. The finite element analysis employing the elasto-perfectly plastic constitutive model satisfactorily provided enough data to correlate experimental results.
