Analysis Of Slope Stability And Anti-slide Pile Optimization Based On ABAQUS

Among all kinds of slope anti-slide reinforcement measures,anti-slide pile as an efficient reinforcement technology has been widely used and popularized for a long time.In order to further reveal the stability of slope under complicated conditions,mechanism and development method for the optimization design of anti-slide pile,this paper based on the finite element strength subtraction,analysis of seepage and stability of the slope under the action of rainfall infiltration,in addition,the related parameters of rock-socketed pile and inclined pile optimization analysis,the main research work is as follows:(1)To study the effect of rainfall infiltration effect on slope stability,the finite element model of slope was established,this paper analyzed the types,rainfall duration,rainfall intensity and rainfall factors influence on the seepage and stability of the slope,the results show that along with the increase of slope and rainfall intensity and rainfall duration,the slope of the maximum pore water pressure increase gradually,gradually reduce the stability safety coefficient;For the clay slope with the same total rainfall,the short-term rainstorm can significantly reduce the slope stability,and the maximum pore water pressure is large.(2)Aiming at the parameter optimization of rock-socketed anti-slide pile,the influence of pile spacing and pile elastic modulus on slope stability,pile internal force and deflection is analyzed.The research results show that the effect of slope reinforced by anti-slide pile is the most reasonable when the distance between anti-slide piles is 4 times of pile diameter.The internal force of the anti-slide pile body suddenly changes at the rock-soil boundary due to the difference of rock-soil elastic modulus.(3)To tilt the pile as the research object,the influence of the pile position and angle on slope stability and pile body internal force were analyzed.The results show that the pile location L_x/L for 4/6,inclination to-30°slope anti-slide pile reinforcement effect is good and pile body internal force peak are much smaller than the vertical pile with the same pile location.At the same time,the above law is still valid when the distance,length and elastic modulus of the inclined pile and vertical pile are changed.The evaluation model of anti-slide pile is put forward considering the factors of slope stability safety factor,inclination Angle,internal force and pile spacing,which provides theoretical basis for the design of anti-slide pile.In addition,combined with the slope example,the paper verifies the advantages of the inclined pile in reducing the internal force of the pile.