Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Effect of the Residual Excess Pore Water Pressure on the Slope Stability Subjected to Earthquake Motion

잔류 과잉공극수압이 지진 하중을 받는 사면의 안정에 미치는 영향

  • Lee, Jun-Dae (Department of Civil Engineering, Semyung University) ;
  • Kwon, Young-Cheul (Geotechnical and Structural Department, Port and Airport Research Institute) ;
  • Bae, Woo-Seok (Department of Civil and Environmental Engineering, Chongju University)
  • 이준대 (세명대학교 토목공학과) ;
  • 권영철 (항만공항기술연구소 지반구조부) ;
  • 배우석 (청주대학교 토목환경공학과)
  • Published : 2006.04.30
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Abstract

Earthquake motion is one of the most significant influence factors on the slope stability. In this paper, an effective stress analysis with the elasto-plastic model was carried out to investigate the behavior of the slope stability subjected to the successive two strong earthquake motions, fore and main shock. The major influence of fore shock to the slope stability was considered as the existence of the residual excess pore water pressure. The paper presents the influence of the existence of the fore shock to slope stability using the numerical analyses. In conclusion, the excess pore pressure by the fore shock was not dissipated during the 7hrs of consolidation. By this residual excess pore water pressure, the factor of safety at the sliding face showed the minimum values, and the deformations of slope was large when compared with the case that considered the main shock only. Furthermore, the minimum of the factor of safety came out after the end of the earthquake motion.

Keywords

References

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