Seismic Response Analysis Of Fill Slopes Affected Amplitude Water-lever And Its Stability Evaluation

In recent years,great threat to human life and property security has been caused by the frequent earthquake.Considering the great destructive power of geological disasters caused by strong earthquake,this kind of issue has caused wide attention of the researchers.The recent records of earthquake disaster show that the coastal areas have greater risk of a major earthquake.Based on the Yunnan province Funing port engineering with the research method of combining theoretical analysis and numerical simulation,the dynamic response analysis of the high fill slope land area has been conducted.The main research contents and results were as follows:First of all,Funing port engineering in regional hydrogeology condition was mastered,the water level change rule and the physical and mechanical properties of the high fill slope land area were mastered,the three-dimensional finite element model of the fill slope with "Wharf structure" and "No-Wharf structure" were established through collecting the measured data of Funing port project in Yunnan province.Secondly,according to the principle of slope strength subtraction,static analysis of the high fill slope land area has been done under the condition of different water conditions,water level drop and the influence of wharf structure on the slope.The whole of the slope deformation and the stress were acquired,and it is concluded that the safety of the embankment slope stability coefficient,Finally the most unfavorable conditions was acquired.Thirdly,According to obtain the most unfavorable conditions,three different earthquake direction of the finite element model were calculated through the vibration mode decomposition response spectrum method.The influence of earthquake direction of the high fill slope was acquired by Comparing two vibration modes of the model.Fourthly,Considering the most unfavorable conditions above,the finite element model with two different kinds of seismic waves were calculated through dynamic time history analysis method method,the characteristics of the location of the fill slope displacement and the time-history curve of stress were acquired.The results and the vibration mode decomposition response spectrum method analysis results are basically identical.Finally,The coefficient of slope stability was calculated through quasi-static method and compared with the standard value in specification,the Fill Slopes stabilitywas evaluated and seismic measures was put forward.