Research On The Structure-slope Interaction

Slope instability is a global geological disaster,which is more widespread and common.Once it occurs,the impact will be large,including the high cost of the treatment and the long duration.Therefore,researching the performance of slope stability and its analysis methods has significant theory and engineering practical significance.At present,there are many domestic and foreign workers engaging in slope analysis and application,obtaining a large number of scientific research outcome which possess practical application significance,but it is still impossible to completely avoid the occurrence of slope instability in actual work.The reason is that the complicated working conditions of the slope,many influencing factors and uncertain factors,the intricate mechanism,much difference between different actual engineering slopes and so on result in it.Certainly,there are also many other reasons which we don't know.The contradiction and dispute between the safety performance goal and the project cost leads to the safety margin not being too high,causeing the landslide to occur frequently.This is the situation of actual engineering.The theoretically achieved results are mostly based on certain assumptions and can only be applied to simple condition;The theory should find the slip failure surface firstly in order to be applied to engineering practice;However,the determination of the damage surface currently merely relise on numerical analysis software,meaning that finding the most unfavorable damage slip surface depends on stepwise search and try.This paper adopts finite element analysis software of Midas Gen and ANSYS,Lizheng Geological Structure Designing software which is a special soil and rock engineering analysis software,FLAC2 D,FLAC3D and other numerical analysis software in order to perform a large number of numerical examples,analyze the influenced regular pattern of relevant parameter changes on slope stability and propose the method and procedure for optimizing the location and depth of slope excavation treatment.Using the FLAC platform of soil and rock engineering numerical analysis software and adpoting different methods to analyze the influence and rule of the structure on the slope stability provide reference for the actual engineering in the future.By calculating the large-scale and analyszing the slope of the Chadong shore next to the Aizhai Bridge,it not only ensures the safety of the bridge,but also ensures the smooth and safe construction of the tourist,sightseeing elevator and serving the engineering practice.The specific research contents are divided into four chapters:Chapter One: The introduction of the slope instability and damage and the maintenance status shows that it is very imperative to analyze the slope stability.It emphasizes the analysis method of slope stability and the research status at home and abroad.Chapter Two: Based on the calculation method of the standard residual sliding force in China,the relationship between the generation and transmission mechanism of the sliding force and the slope stability is studied,with the necessity and feasibility of optimizing the excavation and unloading position of the slope being discussed.Then,the Lizheng Geological Structure Designing software is used to optimize the design and location of the slope excavation,analyzes the actual projects and summarize the actual engineering experience and lessons for improving reference and reference of similar projects in the future.Chapter Three: The research of the mechanism and feasible analysis method of the interaction between the superstructure and the slope puts forward a series of methods,including applying equivalent additional force,setting additional support,structure-slope direct coupling analysis.The implementation of the three methods and the calculation results comparably analyzes for providing practical analysis methods of practical engineering applications.By using the FLAC platform and using the equivalent support method proposed in this paper,the influence of the elevator,which is on the Chadong shore next to the Aizhai Bridge,on the slope is analyzed.Chapter Four: By using the finite element analysis software ANSYS,a three-dimensional finite element analysis model is established based on the site topography,and from the stress layer,the influence range and influence degree of the sightseeing elevator construction on the mountain of the Chadong shore next to the Aizhai Bridge are comparably analyzed.The special geological analysis software such as FLAC2 D and FLAC3 D is used to analyze the overall stability of the mountain of the Chadong shore next to the Aizhai Bridge after the elevator is built,and evaluate the overall safety performance.