关键词: 公路边坡, 地表水入渗, 降雨入渗, 有限元, MIDAS-GTS/NX

Abstract: The Midas-GTS/NX software is used to simulate the slope of a highway in Weishan County, Yunnan Province. Through the mirror modeling and the simulation, the stability of the slope is analyzed by strengthening the single and double rows of anti-slide pile, which indicating the failure pattern and the deformation trend of the slope. The results show that the potential sliding surface has occurred in the original working condition of the slope, and the entire slope is in an unstable state. After the rainstorm, the soil underneath the slope is in a saturated state, and the bearing capacity is further reduced, the slope is unstable because of the large displacement of the slope in both the horizontal and the vertical directions. Therefore, it is necessary to reinforce it. The factor of safety for the slope installed by the single/double-row anti-slip pile is 2.43 under the rainfall condition, which indicating that the slope is stable, and the reinforcement effect is obvious. At the same time, it is shown that the Midas-GTS/NX finite element software can fully consider the influence of complex conditions such as surface water and rainfall infiltrations on the stability of the multi-layer soil slope. The SRM analysis results are consistent with the actual engineering estimation results.

Key words: Highway Slope, Surface Water Infiltration, Rainfall Infiltration, Finite Element, Midas-GTS/NX