基于ANSYS蜂巢约束路基边坡稳定性分析

Stability Analysis of Honeycomb Confined Subgrade Slope Based on ANSYS

摘要: 路基的边坡稳定性对道路的使用性能及安全性有着重要的影响。为了研究蜂巢约束系统对路基边坡稳定性的影响作用，本文基于ANSYS建立了边坡稳定性分析的数值模型，对比分析了边坡附加蜂巢约束系统前后稳定性差异，发现在边坡坡度i = 1.5时，附加了蜂巢约束之后，边坡的稳定性系数提升了4.7%~5.9%。在边坡坡度i = 1.0时，附加了蜂巢约束之后，边坡的稳定性系数增加了15.8%~20%。由此可见，在边坡角度较小，即边坡较陡时，附加蜂巢系统之后，可以更为明显地提高边坡的稳定性；同时还研究了降雨以及蜂巢结构尺寸对边坡稳定性的影响，研究发现降雨对于边坡稳定性有不利影响，附加蜂巢后稳定性提高；蜂巢系统的高度与边坡稳定性正相关，在控制成本的前提下应选用较高的蜂巢约束系统。

Abstract: The slope stability of subgrade has an important influence on the road performance and safety. In order to study the effect of honeycomb constraint system of subgrade slope stability, the paper es-tablished the numerical model of slope stability analysis based on ANSYS, additional beehive con-straint system before and after the contrast analysis of slope stability, and found when slope i = 1.5, after additional beehive constraints, the stability of the slope coefficient increased by 4.7% - 5.9%; when slope i = 1.0, the stability coefficient of slope increased by 15.8% - 20% after honeycomb con-straint was added. Therefore, when the slope angle is small, that is, when the slope is steep, the sta-bility of the slope can be significantly improved by adding honeycomb system. At the same time, the influence of rainfall and honeycomb structure size on slope stability was also studied. It was found that rainfall had a negative impact on slope stability, and the stability was improved after adding honeycomb. The height of the honeycomb system is positively correlated with the slope stability.