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首页> 外文会议>International Conference on Smart City and Systems Engineering >Numerical Analysis of Unsaturated Laterite Slope in Jincheng Rail Based on Strength Reduction FEM Considering Matrix Suction
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Numerical Analysis of Unsaturated Laterite Slope in Jincheng Rail Based on Strength Reduction FEM Considering Matrix Suction

机译：考虑基质吸力的基于力量减小的金城轨道不饱和后坡的数值分析

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Rainfall and soak will often lead to instability of unsaturated slopes. This is mainly because with increasing of water content in soil mass, the matrix suction will reduce substantially and even disappear at all. In order to study the relationship between matrix suction and stability of unsaturated slopes, a typical unsaturated laterite slope in Jincheng Rail is numerically analyzed in this article utilizing strength reduction FEM program and taking the effect of matrix suction into consideration. Five cases have been considered in the typical unsaturated laterite slope model with different matrix suction from 120kpa to 0kpa, and the corresponding safety factors are calculated. Research results show that the safety factor of the laterite slope reduces gradually along with the reduction of the matric suction. When the matric suction is lost, the safety factor is less than 1.0 and a local sliding surface is generated on the upper section of the laterite slope.
机译：降雨量和浸泡通常会导致不饱和斜坡的不稳定性。这主要是因为随着土壤质量的含水量的增加，基质抽吸将大大减少甚至消失。为了研究基质抽吸与不饱和斜坡的稳定性之间的关系，在本文中利用强度减少有限元计划并考虑基质抽吸的影响，在本文中分析了金城轨道中的典型不饱和的后坡坡。在典型的不饱和后岩模型中考虑了从120kPa到0kPa的不同基质抽吸的典型不饱和后倾斜模型中考虑了五种情况，并计算了相应的安全因子。研究结果表明，红外斜坡的安全系数随着测量的减少而逐渐减少。当损失原料抽吸时，安全系数小于1.0，在红土斜坡的上部产生局部滑动表面。

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