Numerical Analysis On Dynamic Response Characters And Dynamic Stability Of Soil Slope

The research of slope stability under strong earthquake is always the hot issue in the field of geotechnical engineering, the problem of slope dynamic stability is paid more and more attention in recently years. In the20th century and the beginning of this century,there were thousands of destructive earthquake and that induced a lot of disasters such as landslides and debris flows. Having caused heavy loss of life and property to human beings. Exploring the response characteristics of rock and soil slope during earthquake, and knowing the earthquake action process have great guiding significance for disaster prevention and mitigation. Based on this,in this article the author use the finite element software analysis the response characteristics and stability of rock and soil slope during earthquake. The main work have done and the results are as follows:Having summarized current situation and the developing trend of the earthquake slope stability,the methods that used analysising the slope stability under earthquake and the application about these methods at home and abroad.According to the principle of dynamic analysis, establish the different height, different angle, different morphology of homogeneous earth slope model and different soft soil slope model.Then input the tianjin seismic waves, and monitor the acceleration, velocity and displacement of the monitor point on the slope,gained the time history curve and peak of acceleration, velocity and displacement on differerent monitor point.By compareing the seismic response characteristics of different slope model, acquired the the general rule of slope under earthquake.Considering the randomness of the geotechnical materials, space variability and randomness of seismic load, the reliability analysis method were introduced.After the static analysis of zhenjiang artificial piled mountain, carried out the dynamic stability of piled mountain slope and dynamic reliability analysis. The slope dynamic stability factor,the reliability index were calculated and Seismic dynamic response of the piled mountain slope on the two different seismic wave were gained. Dynamic analysis and dynamic reliability analysis showed that piled mountain still has good stability after the earthquake.