Abstract
In order to study the seismic response of the embankment slopes with different reinforcing measures, shaking table tests were performed on three embankment slope models (i.e., unreinforced embankment slope, 2-layer reinforced embankment slope and 4-layer reinforced embankment slope). Wenchuan earthquake motions and white noise excitations were performed to investigate the change of the model parameters, the horizontal acceleration response, the vertical acceleration response and the dynamic earth pressure response of embankment slopes. A comparison was made on the seismic response among the embankment slopes with different reinforcing measures. The results show that the natural frequency of reinforced embankment slope is larger than that of unreinforced embankment slope, and the reinforced embankment slope is less sensitive to seismic excitation. Horizontal acceleration response is obviously amplified by embankment slope. Horizontal acceleration magnification presents a decreasing trend with the increase of the peak value of input horizontal acceleration, and the decreasing ratio is higher for reinforced embankment slope. The vertical acceleration magnification of reinforced embankment slope is much smaller than that of unreinforced embankment slope, and the nonlinear characteristic of embankment slope in vertical direction is not as obvious as that in horizontal direction. Residual earth pressure is mainly induced at the upper part of embankment slope.
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Acknowledgments
This work is financially supported by the National Natural Science Foundation of China (51308551), the China Postdoctoral Science Foundation Funded Project (2012M511760), the Hunan Provincial Natural Science Foundation of China (13JJ4017) and the Fundamental Research Funds for the Central Universities of China (2012QNZT051).
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Lin, Yl., Leng, Wm., Yang, Gl. et al. Seismic response of embankment slopes with different reinforcing measures in shaking table tests. Nat Hazards 76, 791–810 (2015). https://doi.org/10.1007/s11069-014-1517-5
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DOI: https://doi.org/10.1007/s11069-014-1517-5