Stability Analysis Of Soil Slope Strengthened By Anti-slide Pile

Anti slide pile is widely used in the treatment of landslide disaster.There are still many problems in the theory and design of the existing anti slide piles for slope reinforcement.Because numerical simulation is widely used in slope protection design,this paper mainly uses numerical simulation method combined with theoretical analysis and reference to some monitoring data to analyze the effect of anti slide pile reinforcement of soil slope.In this paper,abacus software and strength reduction method are used to analyze the stability of natural slope,single row pile reinforced slope and double row pile reinforced slope.Finally,based on the specific engineering case,the design optimization of anti slide pile reinforced slope is carried out,and the optimization technical path of anti slide pile reinforced slope is summarized according to the optimization process.The main research results of this paper are as follows:(1)The strength reduction method can be used to analyze the slope stability under various working conditions without assuming the position of sliding surface in advance.It is further explained that the strength reduction method can be used to analyze the slope stability under complex conditions,so it has a wide application prospect.(2)When the factors such as pile diameter,pile length,distance between piles,distance between front and back rows of piles,pile arrangement and connection mode of pile top change,the safety factor of slope stability strengthened by anti slide piles also changes.The research results show that the changes of anti slide pile factors have a great impact on the reinforcement effect of the slope,so it is necessary to optimize the anti slide pile design combined with various factors.(3)The traditional form of anti slide pile is partially transformed,For example,a short arm platform is added after the pile,and the double row piles are connected by connecting beams.The results show that the improved anti slide pile can improve the stability of the slope through theoretical analysis and numerical simulation.(4)Increasing the pile spacing can reduce the number of anti slide piles,but it needs to increase the pile diameter and length to improve the safety factor,which consumes a lot of materials.Reducing the pile spacing increases the number of anti slide piles,but reduces the pile diameter and length,so saves materials.Therefore,reducing the pile spacing in a certain range is a more reasonable anti slide pile optimization design method.