Abstract
Stability prediction of rock slope under seismic loads is important for landslide hazard assessment. For studying the dynamic response of anti-dip rock slope, one two-dimensional physical model of anti-dip slope containing two groups of rock joints was designed for shaking table test. The influences of different dynamic parameters including wave type, amplitude and frequency on the dynamic response of the slope model were considered. The results of this study reveal that the amplification coefficients of peak ground acceleration increase with increasing the relative elevation. With the increase of acceleration amplitude, the amplification coefficients rise on the whole, but they are influenced by rock structure and wave type. The amplification coefficients increase with the increase of frequency, and they become stronger near the slope top. The influence of frequency is closely related to the acceleration amplitude. The discontinuous deformation analysis method was used to compare the dynamic failure of slope model with shaking table test. Both the results of two methods indicate that the slope model under seismic loads mainly presented that shear cracks and tension cracks extended, connected and developed step-type fractures, the slope experienced toppling and sliding failure. The study has theoretical and practical significance, it can provide guidance for seismic slope engineering.
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Acknowledgements
The work reported in this paper has received financial support from the National Natural Science Foundation of China (No. 51679173, U1765207) and Natural Science Foundation of Hubei Province (No. 2016CFA083). This support is gratefully acknowledged. The authors would like to express appreciation to the anonymous reviewers for their valuable comments and suggestions for improving this manuscript.
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Feng, X., Jiang, Q., Zhang, X. et al. Shaking Table Model Test on the Dynamic Response of Anti-dip Rock Slope. Geotech Geol Eng 37, 1211–1221 (2019). https://doi.org/10.1007/s10706-018-0679-4
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DOI: https://doi.org/10.1007/s10706-018-0679-4