ZHANG Jiangwei,ZHOU Aihong,CHI Mingjie,et al.Research on Boundary Range in Seismic Response Simulation of Slope[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(01):34-41.
ZHANG Jiangwei,ZHOU Aihong,CHI Mingjie,et al.Research on Boundary Range in Seismic Response Simulation of Slope[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(01):34-41. DOI: 10.13409/j.cnki.jdpme.20210115002.
Research on Boundary Range in Seismic Response Simulation of Slope
In numerical simulation of seismic response of slopes, setting a scientific and reasonable boundary dimension of slope models is one of the key factors to ensure the accuracy of the simulation results. Based on the finite element numerical simulation method, two groups of generalized model with different sizes of the leading edge and trailing edge slope were established, the actual ground motion records were selected as the inputting loads, and the dynamic response of the slope was calculated to explore the reasonable dimension of the leading edge and the trailing edge. Also, the availability of the remote boundary in slope seismic stability analysis is verified. The results show that: (1) In the seismic responses study of slopes using numerical simulation, the leading edge size of the slope model should be set at least two times of the slope height to avoid seismic reflection superimposed effect, and the trailing edge size should be set at least four times of the slope height. Only in this way the simulation results would be more accurate. (2) The difference of the slope seismic safety coefficient obtained by setting the viscoelastic boundary and remote boundary is 0.02, which is shown that the reasonable remote boundary can be applied to the analysis of slope seismic stability.
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