In the present paper, the seismic response of cohesive-frictional soil slope has been investigated in the time-domain by using the 1995 Kobe earthquake records. A 2-dimensional dynamic finite element model has been developed in the plain-strain condition by considering the elastic perfectly plastic Mohr-Coulomb soil model criterion. The analysis simulates maximum horizontal and vertical seismic accelerations simultaneously at the base of the slope. The seismic response of the slope under combined seismic accelerations has been reported in terms of the displacement induced during the earthquake shaking period. The results show that the induced displacement of slope under combined seismic loadings is greater compared to the case of horizontal loading only. Further, the slope is expected to fail at the toe level first rather than at the crest level.

本文利用1995年神户地震记录，对粘性摩擦土边坡的地震响应进行了时域研究。考虑弹性完美塑性 Mohr-Coulomb 土模型准则，在平面应变条件下建立了二维动态有限元模型。该分析同时模拟了斜坡底部的最大水平和垂直地震加速度。已经根据地震震动期间引起的位移报告了在组合地震加速度下边坡的地震响应。结果表明，与仅在水平荷载作用下的情况相比，组合地震荷载作用下的边坡诱发位移更大。此外，预计斜坡首先会在趾部水平而不是在波峰水平失效。