Study On Key Influencing Factors Of Seismic Response Of Soil Slope Based On FLAC3D

The seismic response of slope is the basis for analyzing the mechanism of seismic instability of slope,explaining the damage of slope and guiding the seismic design of slope.It has become the focus of geotechnical engineering and geological engineering.In view of this,based on the FLAC3 D finite difference simulation platform,based on the verification of the influence of the boundary of the model on the seismic response of the slope body,combined with the previous large-scale shaking table test model and research results,we expanded the design of numerical analysis model and discussed the parameters of ground motion and Impact of key problems such as slope shape on the seismic response of slopes The main research work completed is as follows:(1)The typical homogeneous soil slope was selected,and the influence of the left,right and bottom boundary of the slope on the seismic response of the slope was studied in detail.Combined with the static calculation,the recommended value of the slope boundary range during the seismic calculation was given.(2)Based on the published results of the shaking table test,using the proposed range of proposed boundary selection,numerical expansion analysis was conducted to study the influence of changes in parameters such as amplitude,frequency and waveform of ground motion on the dynamic response of the slope.(3)Using the numerical analysis model of(2),three typical slope types of straight slope,convex slope and concave slope were constructed,and the influence of slope type on the seismic response of the slope was studied.The results obtained in this paper provide important references for seismic stability evaluation and seismic design of slopes.