Study On Arrangement And Characteristics Of Arched Anti-slide Piles

Landslide disasters in nature have always been a problem for humans,often leading to large-scale casualties and property losses.Anti-slide piles have been widely used due to their large anti-sliding ability,small disturbance to the stability of the sliding body,safe and convenient construction,flexible pile position and rapid anti-sliding effect after construction.One of the most commonly used engineering measures in engineering.However,traditional anti-slide piles often have problems such as unreasonable force and excessive deformation.At the same time,how to play the biggest role through limited resources is a factor that must be considered in the design process of anti-slide pile engineering.In this paper,based on the theoretical analysis and numerical simulation analysis,a semi-space rigid structure-arched antislide pile is studied to a certain extent.The structure is a traditional anti-slide arrangement on a plane.The sliding pile is changed into an arched arrangement,and each pile top is connected with a certain rigidity to form a unitary structure.The main research contents are as follows:(1)On the basis of summarizing and analyzing the research results of the predecessors against the sliding retaining structure and the common effect of pile and soil,the working mechanism of the arched anti-slide pile is systematically expounded in combination with the mechanical characteristics of the arch structure.(2)By simplifying the arched anti-slide pile structure system and establishing the calculation model,combined with the knowledge of structural mechanics,the mathematical expressions of the reasonable arrangement curve of the arched anti-slide pile under uniform load and "triangular" load are derived.The calculation formula of the maximum pile spacing of arched anti-slide piles is derived by combining the characteristics of soil arching effect between piles.(3)Reasonable simplification and decomposition of the entire arched anti-slide pile structure system,using the relevant theory of force method in structural mechanics to establish the flexibility equation for calculating the internal force and displacement of the arched antislide pile structure system,and the calculation of internal force and displacement is carried out to verify the rationality of the flexibility equation.Based on the example,the material cost of the arched anti-slide pile is better than that of the single-row linear anti-slide pile.The conclusion.(4)The three-dimensional numerical analysis of arch-shaped anti-slide piles and singlerow linear anti-slide piles is carried out by MIDAS finite element numerical simulation software.The stress cloud map and displacement cloud map of the model are obtained,and the archshaped anti-slide piles are applied.The conclusion is obtained by comparing the maximum shear force value,bending moment value and displacement value of the single-row linear antislide pile and the arched anti-slide pile to reflect the superiority of the arched anti-slide pile;The shear force values and bending moment values of piles at different positions under different vector heights are analyzed.It is concluded that the appropriate increase of the span ratio can optimize the stress state of arched anti-slide piles.