Analysis and research comparison of anti-slide piles under nonlinear strength criteria and traditional specifications

Slope stability analysis serves as the basis for the design of slope treatment projects. As one of the most intuitive evaluation criteria, it determines the safety factor of slope stability. The analytical methods have become increasingly perfect. However, the safety factor of slopes in their natural state often fails to meet the requirements of some important projects. Therefore, certain reinforcement measures need to be taken for slopes to improve their stability. Anti-slide piles are widely used due to their advantages such as strong anti-slide ability, wide application range and convenient construction. Compared with the slope before anti-slide pile reinforcement, the stability analysis of the slope after reinforcement is more complex and has become an important research method at present. The finite element numerical simulation method was applied to study the treatment effect of the landslide mass in a certain site using anti-slide piles. During the numerical simulation process, nonlinear materials were used to simulate rock and soil, linear elastic materials were used to simulate anti-slide piles, and a series of contact units were used to simulate sliding surfaces. Through the comparative analysis of the displacement field and stress field of the rock mass before and after the treatment, it is believed that it is completely feasible to conduct mechanical analysis of anti-slide piles using the planar stress model.