Abstract
Earthquake is a major trigger for failure of rock slope in seismically active regions. This study presents a novel pseudo-dynamic approach for predicting the seismic stability of slopes in Hoek–Brown rock masses, in which the earthquake effect is characterized by a sinusoidal seismic wave with a motion amplification behavior. The discretization kinematic analysis combined with generalized tangent technique is also used to construct the failure mechanism of the rotation sliding of seismic slopes. The methodology was validated through comparison with published results and numerical simulation. The effect of temporal and spatial varying of seismic waves on slope stability was investigated. The results indicate that the pseudo-static approach may over or underestimate the stability of rock slopes. The pseudo-dynamic analysis is recommended to provide a more meaningful solution of safety factors. A parametric study was also carried out to explore the effect of rock strength, slope geometry, and earthquake parameters.
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Acknowledgements
The authors sincerely thank the reviewers for their constructive comments.
Funding
The first author thanks the support of “the Fundamental Research Funds for the Central Universities” of China (JZ2020HGTB0042). The financial support of National Natural Science Foundation of China (51878074) is also greatly appreciated.
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Wang, B., Li, T., Sun, Z. et al. A Pseudo-dynamic Approach for Seismic Stability Analysis of Rock Slopes in Hoek–Brown Media. Geotech Geol Eng 40, 3561–3577 (2022). https://doi.org/10.1007/s10706-022-02120-x
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DOI: https://doi.org/10.1007/s10706-022-02120-x