Research On Design And Calculation Method Of Micro-pile Based On Pile-soil Interaction

Landslides have always caused great harm to the safety of people 's lives and property.With the development of technology,methods for managing landslides have become more mature,but simple structures and convenient construction methods are more needed by people,and micro piles are very suitable for these.demand.Generally speaking,the mini-pile refers to a pile diameter less than 300 mm,a ratio of pile length to pile length greater than 30,the inside of the pile contains a reinforced body,and is a non-displacement pile formed by drilling and pouring.In recent years,micropile has also been successfully applied in slope reinforcement engineering and landslide treatment.Compared with traditional large-scale anti-sliding structures such as retaining walls,antisliding piles,and anchor rods,micro-pile has lower requirements on the construction site environment,flexible layout,low cost,and less impact on the environment.Therefore,it is very important for the development and application of micropile.In order to manage the landslides in a more environmentally friendly and safe manner,to ensure the safety of the people,and to stabilize the standard of living,it is necessary to study the mechanical mechanism of micro piles more clearly,further improve the design theory of micro piles,and establish scientific calculation methods.Theoretical and practical significance.This paper summarizes the domestic and foreign research status of micropile reinforcement slope,the reinforcement mechanism of micropile,design content and so on.Considering the influence of pile-soil interaction,based on the substructure method,singlerow,double-row,three-row and multi-row micropile reinforcement slope calculation methods are derived.FORTRAN is used to program the calculation method of micropile under the interaction of pile and soil,and the feasibility of the method is verified through calculation cases.And the comparison of micropile monitoring data and program calculation in the landslide control design of Gongzhen County,Baoji City verified the accuracy of the method.The research content of this paper can provide the method and technical support for the calculation of the force of the micro-pile considering the sitting of the pile and soil in actual engineering.