Analysis On Slope Stability And Bolt Supporting With Three-Dimensional FEM

Along with the large-scale construction of mountain highway and fast development of the western part of China, problems of the stability about the slopes are standing out gradually. Bolt supporting is an effective way of slope supporting, the application of bolt supporting in the slopes becomes more and more widely. Analysis of slope stability and design of bolt supporting has become an important subject in the field of civil engineering. It is actually important to study on the problems of the slopes.Theoretical analysis with numerical analysis is combined in the paper, the three- dimension (3-D) slope stability and optimization design are researched. First, the basic thought on the FEM research is introduced. Under the conditions of practical projects, The Elastic-Plastic FEM based on the shear strength reduction technique is adopted. With the aid of ANSYS software, 2-D and 3-D intact rock slope FEM models are established. Therefore some side slopes stress deformation charts are obtained. Compare with the 2-D and 3-D stability factor of slope. Second, with the aid of ANSYS software, 2-D and 3-D bolt supporting slope FEM models are established. Therefore some side slopes and the bolt stress deformation charts are obtained. Compare with the 2-D and 3-D differences of the slope. Third, the basic clue of slope optimization design is introduced, and the plan and detail of the original side slope are optimized. With the method of theory, reasonable anchor length and angle are got. Reasonable horizontal and vertical distance of anchor is got with numeric simulation analysis. Basis on the ANSYS of optimization design, FEM analysis and optimization design are combined, reasonable anchor diameter is got.The achievement of the thesis can provide a basis to the design and construction of the slope engineering in ShenNongJia tourist way, and also a reference to the analogous problem of slope engineering in west express highway construction.