›› 2009, Vol. 30 ›› Issue (S1): 180-183.

• Geotechnical Engineering • Previous Articles     Next Articles

Dynamic response of slopes under earthquakes

BI Zhong-wei 1, 2, ZHANG Ming1, JIN Feng1, DING De-xin2   

  1. 1. State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing 100084, China; 2. School of Urban Construction, University of South China, Hengyang 421001, China
  • Received:2009-04-20 Online:2009-08-10 Published:2011-03-16

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Abstract:

Taking Indian Koyna earthquake as input dynamic loads, a dynamic numerical analysis model of soil slopes is established by ABAQUS program. Based on this, the dynamic response under earthquake is analyzed. It is shown that the slope has an amplification effect on earthquake acceleration. The horizontal peak acceleration in the slope roof is 1.0 m/s2; approximately 3 times of the inputted earthquake peak acceleration; the vertical peak acceleration in the slope roof is 0.8 m/s2; approximately 3.2 times of the inputted earthquake peak acceleration. When the soil body is damaged, the slope body displacement will be enlarged along with the increase of the earthquake duration time, which causes a distortion cumulative effect. The results are helpful to further researches on the slope instability mechanism under earthquake.

Key words: slope engineering, dynamic response, Koyna earthquake, ABAQUS

CLC Number: 

  • TD 322+.4
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