Analysis On High Rock Slope Stability And Supporting Structure System With Fem

The mountain massif is originally in a relatively steady equilibrium in nature. However, the landslides have taken place due to the structual difference of the igneous body, the tectonic movement from the crustal deformation, or the effect of volcanic eruptions and earthquake. Along with the development of humanbeings, during which they excavate the mountain, chop and destruct the vegetation, and set up railways, high ways and dams, the previous equilibrium of the mountain massif turns into a frequent occurrency of landslides and collapse. Since the reform and opening up, China's rapid economic development calls for a further expansion of domestic demand and a balance of economic developmet. Therefore, an annual 500 billion investment is put into the railway construction, when massive launch of railway projects are more and more essential to the deformation and stability of the slope along the railway lines In order to guarantee the secure operation of railways after completion, and to prevent the disastrous slope slides and collapse, the research and analysis on the stability of slope are indispensable in promoting the support and reinforcement of the slope along the rail lines.To conclude analystic theory and calculating method for actual projects, this thesis conducts systematic induction and summary of the form of slope damage as well as the caculating theory of slope stability. Besides, a further study of the caculating theory is also presented in the paper. Based on the high rock slope from real project of Shijiangzhuang---Wuhan High-speed Railway DK1126-997.09-Dk1127-085.27 section, this paper calculates and analyzes the stability of the slope situated in no supporting structure, pure rock-bolts support and pile support, within the consideration of seismic force when caculating the stability of slope under different supporting scheme. With the help of finite element software Ansys, the paper stimulates the stability of the slopes under the initial crustal stress, in order to study the slope damage and stability of slopes in construction progress, and to analyze the inner variation and deformation of supporting structure. With Ansys stimulating the seismic force, the paper also analyze the stress of high rock slope, the variation rules, and the dynamic response of the supporting structure.In the end, the paper analyzes in details the influential factors of the supporting design of slopes, and provides an optimazation design for the reinforcement of supporting structure of the high rock slope.As a consultable role for the stability and supporting design of slopes under seismic force, the research result of this paper will further enrich the existing slope stability studies, and provide reference for the supporting design of slope projects for railway and high way construction.