지진발생시 Slide Block형 분석을 이용한 누적 산사태 변위 결정 단순법

Simplified Method for the Determination of Cumulative Landslide Displacement in the Event of an Earthquake using "Slide Block" Type Analyses

  • 배윤신 (한국해양연구원 연안개발에너지 연구부)
  • 투고 : 2009.02.15
  • 심사 : 2009.02.25
  • 발행 : 2009.03.30

초록

지진을 수반한 산사태는 지난 십년동안 수만명의 사상자와 수십억불의 재난피해를 초래해 왔다. 정역학적으로 안정된 경사로 표현되는 잠재적 지진 위험요소를 결정하는 것은 지진이 발생하는 동안 중요한 움직임을 평가하는데 필수적이다. 동적 하중에서의 산사태 움직임을 추정하기 위한 Newmark 방법이 소개되고 두 사례에 적용되었다. 그리고 에너지에 근거한 간략법이 Newmark의 변위를 추정하기 위하여 개발되었다.

Earthquake induced landslides have caused tens of thousands of deaths and billions of dollars of damage during the last century alone. Determining the potential seismic hazard presented by statically stable slopes is essential for the evaluation of substantial landslide movement during an earthquake. Newmark's method for estimating landslide displacement under dynamic loading was presented and applied to two case studies. A simplified energy-based method was then be developed to estimate the Newmark's displacement.

키워드

참고문헌

  1. Arias, A., (1970), "A Measure of Earthquake Intensity," Seismic Design for Nuclear Power Plants, Massachusetts Institute of Technology Press, Cambridge, pp.438-483
  2. Armstrong, C. F., (1979), "Cotote Lake Earthquake 6 August 1979," California Geology 32, pp.248-251.
  3. Dobry, R., I. M. Idriss, and E. Ng., (1978), "Duration Characteristics of Horizontal Components of Strong-Motion Earthquake Records," Bulletin of the Seismological Society of America, Vol.68, No.5, pp.1487-1520.
  4. Herzog, D. W., and Nilssom, M. K., (1996), Determining Cumulative Displacement of Landslides Using "Sliding-Block" Type Analyses, Corvallis, Ore.
  5. Jibson, R. W. (1993), "Predicting Earthquake-Induced Landslide Displacements Using Newmark's Sliding Block Analysis," Transportation Research Record, No. 1411-Earthquake-Induced Ground Failure Hazards, Transportation Research Board, National Research Council, Washington, D.C., pp.9-17.
  6. Kramer, S. L. (1996). Geotechnical Earthquake Engineering, Upper Saddle River, New Jersey: Prentice Hall.
  7. Shields, C. S., and Rollo, F. L. (1990), Retaining Structure to Mitigate Seismic-Induced Movement of Steep Slope in Dune Sand. San Francisco: Treadwell and Rollo, Inc.
  8. Terzaghi, K. (1950), "Mechanisms of landslides," Engineering Geology (Berkeley) Volume, Geological Society of America.
  9. Vessely, D. A., and Cornforth, D. H., (1998), "Estimating Seismic Displacements of Marginally Stable Landslides Using Newmark Approach," Geotechnical Earthquake Engineering and Soil Dynamics III (Volume I), American Society of Civil Engineeris, pp.800-811.
  10. Wilson, R. C., and Keefer, D. K. (1983), "Dynamic Analysis of a Slope Failure from the 6 August 1979 Coyote Lake, California, Earthquake," Bulletin of the Seismological Society of America, Vol.73, No.3, pp.863-877.
  11. Wilson, R. C., and Keefer, D. K. (1985), "Predicting Area Limits of Ear hake-Induced Landsliding, in Ziony, J. I., editor, Evaluating Earthquake Hazards in the Los Angeles Region: U. S. Geological Survey Professional Paper No.1360, pp.317-345.