The Analysis of Lateral Movement at the Top of Retaining Wall in the Downtown Area

도심지 옹벽 상단에서의 수평변위에 관한 사례분석

  • 배윤신 (한국해양연구원 연안개발에너지연구부)
  • Received : 2009.02.23
  • Accepted : 2009.03.13
  • Published : 2009.04.01

Abstract

The movement of in-situ walls has become very important as construction in large cities moves upward, instead of outward. Tall structures typically have deep excavations not on1y to provide extra space for parking, but also to reduce the potential settlement of the building. These large excavations require a robust bracing system to resist the lateral earth pressures as the depth increases. Methods to predict deflections of the retaining systems are of utmost importance because wall movements allow potentia1 settlement of adjacent structures. Case studies will be analyzed and measured waI1 def1ections will be compared with predictions from empirica1ly derived charts.

대도시에서의 공사는 외부방향이 아닌 상부로 진행되기 때문에 현장의 벽면 움직임은 매우 중요하다. 고층 구조물은 주차장을 위한 여분의 공간 확보뿐 아니라 건물의 잠재적 침하를 줄이기 위하여 일반적으로 깊은 굴착을 수반한다. 이러한 대형 굴착은 깊은 심도에 따른 횡방향 지중압력에 견디기 위한 견고한 브레이싱 시스템을 필요로 한다. 벽체 움직임은 잠재적인 인접 구조물의 침하를 허용하기 때문에 sheetpile 이나 diaphragm wall과 같은 옹벽구조물의 변형을 예측하는 방법은 매우 중요하다. 사례들을 분석하고 측정된 벽체 변형은 경험적 도표로부터 예측된 값들과 비교되었다.

Keywords

References

  1. Clough, G. W., and O'Rourke (1990), Construction Induced Movements of In-situ Walls. Geotechnical Special Publication #25: Design and Performance of Earth Retaining Structures. pp. 439-470.
  2. Grant, W. P. (1985), Performance of Columbia Center Shoring Wall. Proceedings of the Eleventh International Conference on Soil Mechanics and Foundation Engineering. Volume 4, pp. 2079-2082.
  3. Munger, D. F., Jones, and Johnson (1990), Temporary Tieback Wall, Bonneville Navigation Lock. Geotechnical Special Publication #25: Design and Performance of Earth Retaining Structures. pp. 778-794.
  4. Pearlman, S. L., and Wolosick (1990), Anchored Earth Retaining Structures-Design Procedure and Case Studies. Geotechnical Special Publication #25: Design and Performance of Earth Retaining Structures. pp. 525-539.
  5. Shannnon, W. L., and Strazer (1970), Tied-back Excavation Wall for Seattle First National Bank. Civil Engineering. Volume 40. Number 3, pp. 62-64.
  6. Winter, D. G (1990), Pacific First Center-Performance of the Tieback Shoring Wall. Geotechnical Special Publication #25: Design and Performance of Earth Retaining Structures. pp. 764-777.
  7. Terzaghi, K. (1943), Theoretical Soil mechanics, John Wiley & Sons, New York.
  8. Peck, R. B. (1969), Advantages and Limitations of the Observational Method in Applied Soil Mechanics. Geotechnique, Vol. 19 (2), pp. 171-187. https://doi.org/10.1680/geot.1969.19.2.171