The Research Of Mechanism And Application Of The Diagonal Brace Composite Supporting Structure

With China's western development and mountain city and traffic development,the construction quantity and difficulty of construction is increasing,retaining structure engineering of large or giant bedding rock slope often encountered and,the existing common retaining structure(anti-slide pile and anchor pile,etc.)is difficult to match the national codes for architectural structures displacement on the top of solp and the structure section size,as well as reinforcement of requirements,at the same time some problems such as safety,economy.On the basis of a lot of practical engineering experience and the reference of domestic and foreign literatures,the author of this paper introduces the diagonal bracing concept into the treatment of large bedding rock landslide,and obtains the structure of inclined support composite support.The structure of diagonal composite supporting structure is different from the common supporting structure,which is essentially a transmission force structure.This structure in mountain area of southwest China and the construction of the three gorges reservoir area and geological disaster prevention in have broad application prospects,but the research of mechanical mechanism and engineering design method of diagonal composite supporting structure is still in the exploratory stage,the diagonal load conditions of solid rock embedded foundation mechanical characteristics and failure criterion is little results.In this paper,based on the study of structural mechanics,elastic foundation beam method and the finite element method of the diagonal bracing system,author presents a continuous structure algorithm based on the deflection differential equation.By finite element method and the model experiment,the diagonal bracing composite supporting integral structure and different geometry diagonal bracing supporting structure has carried on the numerical analysis and experimental research,this type of supporting structure and combined with the actual monitoring results,establish the diagonal bracing bearing failure mode,the force calculation and structure design method of the diagonal bracing composite supporting structure are presented in this paper.The achievements of this paper have important theoretical and practical value for the safety and economic use in slope support and landslide control.