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Volume 37 Issue 4
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FAN Gang, ZHANG Jian-jing, FU Xiao. Dynamic response differences between bedding and count-tilt rock slopes with siltized intercalation[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(4): 692-699. DOI: 10.11779/CJGE201504015
Citation: FAN Gang, ZHANG Jian-jing, FU Xiao. Dynamic response differences between bedding and count-tilt rock slopes with siltized intercalation[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(4): 692-699. DOI: 10.11779/CJGE201504015
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Dynamic response differences between bedding and count-tilt rock slopes with siltized intercalation

  • School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

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  • Received Date: August 06, 2014
  • Published Date: May 05, 2015
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    • Abstract
  • Two models with the same dimension, bedding and count-tilt rock slopes with siltized intercalation are designed, and large-scale shaking table tests are performed to analyze the seismic response differences between bedding and count-tilt rock slopes with siltized intercalation. The research results show that the acceleration amplification coefficient in the bedding rock slope is smaller than that in the count-tilt rock slope. The acceleration amplification coefficient on slope face of the bedding rock slope is larger than that of the count-tilt rock slope at the middle and upper parts of slope, where the elevation height is not less than 0.4, while the acceleration amplification coefficient on slope face of the bedding rock slope is close to that of the count-tilt rock slope at the lower part of slope, where the elevation height is less than 0.4. The displacements on slope faces of both the bedding and count-tilt rock slopes increase with the increase of the amplitude of input seismic waves, but the displacement on slope face of bedding rock slope is larger than that of count-tilt rock slope, and the difference value between increases with the amplitude of input seismic waves. The seismic stability of the bedding rock slope is stronger than that of the count-tilt rock slope; the failure forms of bedding rock slope mainly include vertical tension crack at the back edge, bedding sliding at mud layer and caving rocks at slope top, while those of the count-tilt mainly include intersect of horizontal and vertical cracks, squeezed siltized intercalation and shattered slope top.
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