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为了讨论边坡坡面形态对地震边坡加速度、速度以及位移分布规律的影响,将边坡按坡面形态分为凹面坡以及凸面坡,并引入底面角的概念表述了坡面的凹凸强烈程度。通过三维数值建模,利用动力有限元计算方法计算了不同坡形和底面角对三量分布的影响。研究结果表明:在同一水平高度,其放大系数在凹面坡和凸面坡坡面中心达到最大值,并且向两侧逐渐减小,放大系数随着坡底角的增大而增大;同时,边坡坡面形态对边坡内部的三量分布影响较小,但其分布随着坡高的增高而增大。
In order to discuss the influence of slope shape on the acceleration, velocity and displacement distribution of seismic slope, the concept that the slope is divided into concave slope and convex slope according to slope morphology and introduced into bottom angle expresses the intensity of slope roughness . Through the three-dimensional numerical modeling, the effect of different slope and bottom angle on the three-quantity distribution was calculated by dynamic finite element method. The results show that: at the same level, the amplification factor reaches the maximum at the center of the concave slope and the convex slope, and decreases gradually to both sides, and the amplification factor increases with the increase of the slope angle; meanwhile, Slope shape has little effect on the three-dimensional distribution inside the slope, but its distribution increases with the increase of slope height.