| The stability of rock slope under seismic loading problem has always been one of key research direction in earthquake engineering and geotechnical engineering, at the same time, because of the diversity of the structural properties of rock and soil and the randomness of earthquake load, the slope dynamic response under seismic loading presented in various ways. Based on rock slope under the condition of containing different structural surface of the seismic load response has carried out some preliminary research work.The main work of this paper has the following contents:①A brief review of the status of existing seismic slope stability studies and basic methods,including the pseudo-static method, Newmark sliding block analysis and numerical simulation analysis, and did a brief review of the above methods, and point out the problem to solve.②The author introduced the basic idea of finite element method and analysis process, studied the current research situation of soil constitutive model and the theory of viscous boundary, derived the elastic-plastic constitutive relation of rock and soil, and described the conduction mechanism and reflection seismic waves at the structural surface.③Through the establishment of the finite element model, the author compared the differences between traditional linear dynamic analysis and nonlinear dynamic analysis. Simulated analysis of both the respective response of displacement, velocity, acceleration trend and numerical cloud distribution.④The author calculated the influence of the structural surface’s angle, the position, the shear stiffness to the slope dynamic response, and the impact of multiple number, spacing, and the inclination of the slope surface structure dynamic response. And analyzed the factor and value of the maximum impact for three dynamic parameters.Through this article analysis, the conclusion can provide reference for similar slope seismic research. |
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