Dynamic Analysis Model Of Rock Slope Under Earthquake

For the analysis of seismic dynamic response of slopes,researches mainly focus on the seismic slope velocity or acceleration simulation test and numerical monitoring,but the propagation of seismic waves in the slope and displacement and energy distribution are less involved.Based on the existing experimental research and the elastic wave theory,dynamic analysis model of rock slope under earthquake has established.Dynamic responses of slopes with different structure have been analyzed by using dynamic analysis model which is proposed in this research.This research has also computed displacement and energy distribution of rock slopes under earthquake.After comparing with analysis results,experimental results and the finite element solutions,we find out that those results basically tally.The propagation law of seismic wave passing through the structural plane and the energy distribution in the slope are discussed.We also analyzed the experiment phenomenon theoretically.A preliminary study on the failure mechanism of complex geological slope under earthquake is presented.The concrete research contents and main achievements are following:(1)Based on the elastic wave theory,the propagation law of seismic wave in rock slopes is analyzed.A dynamic analysis model is proposed to analyze the dynamic stability and failure mechanism of slope.We proposed the explicit calculation formulas of displacement and dynamic response of the energy density in the inner part of the slope.(2)The dynamic response law of three kinds of different structural slope models(including the homogeneous rock slope,rock slope with joints and slopes with weak intercalation)was calculated by the dynamic analysis model proposed in this thesis.(3)The distribution of energy density in slopes with weak intercalation has been further analyzed further by using the dynamic analysis model.The variation and failure mechanism of slopes with weak intercalation was also discussed.(4)The finite element analysis of the prototype slope with a thin weak intercalation was carried out.The numerical result is consistent with the results obtained by theoretical model.