【摘要】 利用FLAC3D软件,对三种不同形态的岩质边坡在不同强度地震荷载作用下的坡面水平方向位移进行数值模拟研究,并将地震作用下坡面水平位移和对应的残余剪切应变增量云图进行了对比分析。结果表明:在较小地震荷载作用下凹型坡在坡脚处的稳定性最好,而凸型和顺直型坡在坡高约1/5的部位变形较大;随着地震荷载和坡高的增加,凹型坡在坡高约3/5的地方位移出现最大值;而凸型和顺直型坡则在坡脚处出现剪应变区沿坡面向上延伸的现象。更多还原

【Abstract】 The analysis model of horizontal displacements on three different forms of rock slope under the seismic load of different intensity was established with FLAC3D and the calculated horizontal displacements were compared with residual shear strain increment cloud.The results show that the stability of concave slope at the foot of the slope is best when seismic loading is small;however,the convex slope and the straight slope from the foot of the slope to the height of 1/5 have large deformations,and the concave slope in the height of about 3/5 has the maximum deformation as seismic loading and slope height increase.In addition,it is obvious that shear strain area extends upward at the foot of the convex slope and the straight slope.更多还原