The Stability Of Concave And Convex Slope Under Seismic Excitations

Our contry has many mountain foothills. The stability of slope is always of great topic in Civil engineering scholars? research.The earthquake is a very important factors which influencethe stability of slope.There are a lot of earthquakes in our country,how to ensure the stability of the slope under seismic excitations and to reduce or avoid casualties and property losses is a problem worth thinking about,therefore, to analysis the stability of slope under seismic excitations is of great realistic significance and reference value.This article using small shaking table system and finite difference software named FLAC^3D to analysis stability of straight ?convex and concave curve slope.The main research contents are as follows:?1? Use self-designed model box and small precision vibration table WS-Z30 to test the dynamic stability of three different shape slope model,analysis the first crack and verify the stability of horizontal is better than the convex slope,and the stability of concave slope is the best of all.the test using three different angle?45°?60°?75°? slope to analysis,result that slope angle is steeper,the slope is more instability.?2? Ultilize the vertical shear vaves to test the stability of slope model.analysis how the different vibrating directions effect the slope.concluding that slope applied to transverse vibration is easier to destroy than the slope applied to longitudinal vibration.?3? Take advantage of FLAC^3D to analysis three different shape of slope under seism action.discuss the different vibration on slope model test and numerical analysis. two methods of conclusion has consistency,the slope is easier to deformation and destroy which is applied to transverse vibration.?4? Compare vibration test with numerical analysis FLAC^3D,study how the shape of slope?different vibrating directions and boundary condition infunce the stability of slope.put forward some constructive suggestions to different shape of slope.