Sliding Surface Search And Stability Analysis Of Reinforced Slope Based On Ansys

Under the background of frequent natural disasters at home and abroad,the reinforcement of slope becomes more and more important and has higher research value.It plays an important role in ensuring the safety of people's lives and property.The sliding surface search method based on the abrupt change of elastic strain energy is completed by using ansys software,and the minimum reinforcement length is obtained to be 6 m.The stability of reinforced slope is simulated and analyzed by ansys software in this paper.By comparing with the displacement and plastic deformation of the unreinforced slope,it is shown that the reinforced material can effectively improve the stability of the slope.At the same time,the factors affecting the stability of the reinforced slope,such as the number of reinforced layers,the length of reinforcement and the soil mass,are also studied.Some conclusions which can guide the reinforcement form of slope are obtained,and the internal stress,strain characteristics and geogrid characteristics of reinforced slope are analyzed.The main contents and results of this paper are as follows:(1)The energy storage,energy conversion and energy release of the whole slope are analyzed.The failure process of the slope is a process of energy release.With the increase of the coefficient of reduction,the elastic strain energy increases first and then decreases,the volume of the slope decreases first and then increases.The release of elastic strain energy decreases and the volume increases,which indicates that the partial elastic strain energy is transformed into slope kinetic energy,and the abrupt change of volume is almost synchronized with the trend transformation of elastic strain energy.The abrupt change of elastic strain energy and volume can be used as a reference for slope failure.(2)The most direct source of this energy is the release of elastic strain energy from the soil at the sliding surface.Based on this theory,we developed a sliding surface search method.The position of the classical slope sliding surface is determined by ansys software.The method is close to the sliding surface obtained by Spencer method,which shows that this method is reliable.(3)When using ansys to simulate the analysis of reinforced slope,the maximum horizontal displacement of slope decreases obviously with the increase of the number of reinforced layers.When the number of reinforced layers reaches four layers,the effect is not obvious,so the number of layers should be added reasonably in engineering practice.Toomuch will only cause waste;the reinforcement length of 7.5 m will play a role in slope stability,the reinforcement material increases to 17.5 m,the maximum horizontal displacement decreases more and less;with the decrease of soil mass,the reinforcement effect is more obvious.The horizontal disturbance is restrained effectively,but it is not obvious with the increase of soil mass.(4)The internal stability of reinforced slope is analyzed.The stress and strain of reinforced soil show a decreasing trend.When the slope reaches the critical state,the stress and strain of the slope and the top of the slope oscillate,and the relationship of strain and strain is no longer linear.The soil mass in the middle and lower part of the slope is stable and the displacement of the geogrid is smaller than that of the soil around the grid.The displacement of the geogrid is smaller than that of the soil around the grid,which reflects the good tensile performance of the grid.