Abstract:In order to improve the disaster prevention and mitigation capability of urban road projects in mountainous areas, and to solve the limitations brought by the proposed static method, which is mostly used in the seismic design of roadbed slopes, such as the inability to take into account the effects of seismic actions on the site and building, relying on a post-disaster reconstruction project in Ya'an after the Lushan Earthquake, the numerical analysis methods and processes of dynamic elastic-plastic numerical analyses of slopes that take into account the ground stratum, the supporting structure, the building foundation, and the environmental conditions are researched and studied by using the continuous-discrete coupling-based numerical method in the above scenario. Through the study and analysis, the following conclusions are drawn: the continuum-discrete coupling-based numerical analysis method can be used for the dynamic elastic-plastic analysis of roadbed slopes with apparently loose soil overlying bedrock strata; the dynamic stability of the small-diameter anchored tension pile support scheme is better than that of the large-diameter cantilevered pile support scheme, which provides a reference for the similar projects; the anchored tension piles can effectively inhibit the development of the displacement of the neighboring buildings under the dynamic action.
