All Issue

2022 Vol.18, Issue 4 Preview Page

Original Article

31 December 2022. pp. 706-712
Abstract
Purpose: In this study, field experimental research was conducted to analyze the settlement characteristics of soft ground in the central inland region of Korea and use it in practice. Method: The design predicted values ​​and comparative analysis were performed using the ten settlement measurement data actually measured in the field experiment. For the design prediction value, Terzaghi's one-dimensional consolidation settlement analysis was used. In the experiment, the surface subsidence plate was used for field measurement. Result: The settlement behavior of the predicted value and the actual value was generally similar, but in the settlement value, the actual settlement value showed a settlement behavior of 30% or less compared to the predicted settlement value. The rate of consolidation settlement in this study area was in the range of 9.6% to 27.0%, and the average value was 18.21%. It is analyzed that the prediction of the settlement amount of the silty soils distributed in the inland plains of the central region of Korea can be relatively overestimated. Conclusion: It is judged that precise ground investigation and detailed prediction are necessary because there is a possibility of over-design in the design for predicting the amount of settlement of the silty soils distributed in the inland plains of the central region of Korea.
연구목적: 본 연구에서는 우리나라 중부 내륙지역의 연약지반 침하특성을 분석하여 실무에 활용할 수 있도록 하기 위하여 현장실험연구를 실시하였다. 연구방법: 현장실험에서 실측한 10개의 침하계측 자료를 이용하여 설계예측값과 비교분석을 실시하였다. 설계예측값은 Terzaghi의 일차원 압밀침하량분석을 사용하였다. 실험에서 현장계측은 지표침하판을 이용하였다. 연구결과: 예측값과 실제값의 침하거동은 대체로 유사하였으나 침하량 값에서는 실제 침하량 값이 예측 침하량 값에 비하여 30%이하의 침하거동을 보였다. 본 연구지역의 압밀침하율은 9.6%~27.0% 범위를 나타내었으며 평균값은 18.21% 로서 우리나라 중부지역 내륙의 평야지대에 분포된 실트질 연약지반의 침하량 예측은 비교적 매우 과다하게 예측될 수 있는 것으로 분석되었다. 결론: 우리나라 중부지역 내륙의 평야지대에 분포된 실트질 연약지반의 침하량 예측 설계에서는 과다설계 가능성이 있으므로 정밀한 지반조사와 세밀한 예측이 필요한 것으로 판단된다.
References
  1. Asaoka, A. (1978). "Observational procedure of settlement prediction." Soils and Foundations, Vol. 18, No. 4, pp. 87-101. 10.3208/sandf1972.18.4_87
  2. Barron, R.A. (1948). "Consolidation of fine grained soils by drain wells transactions." Transactions of American Society of Civil Engineers, Vol. 113, pp. 718-754. 10.1061/TACEAT.0006098
  3. Chang, M.F. (1991). "Interpretation of over consolidation ratio from in_su tests in recent clay deposits in Singapore and Malaysia." Canadian Geotechnical Journal, Vol. 28, No. 2, pp. 210-225. 10.1139/t91-028
  4. Hansbo, S. (1981). "Consolidation by vertical drains." Geotechnique, Vol. 31, No. 1, pp. 45-66. 10.1680/geot.1981.31.1.45
  5. Hosino, S. (1962). "Problems of foundation in recent years." Society of Civil Engineering, Vol. 47, No. 7, pp. 124-131.
  6. Kim, J.S. (2021). "An experimental study on the settlement characteristics of soft ground in the central west coast region." Journal of Korea Society of Disaster Information, Vol. 17, No. 4, pp.786-793.
  7. Onoue, A. (1988). "Consolidationby taking well resistance and smear into consolidation." Soils and Foundations, Vol. 28, No. 4. pp. 165-174. 10.3208/sandf1972.28.4_165
  8. Tan, T.S., Inoque, T., Lee, S.L. (1991). "Hyperbolic method for contributions analys." Journal of Geotechnical Engineering, Vol. 117, No. 11, pp. 1723-1737. 10.1061/(ASCE)0733-9410(1991)117:11(1723)
  9. Terzaghi, K. (1943). "Theoretical soil mechanics." Wohn Wiley & Sons, INc., NewYork, N.Y. 10.1002/9780470172766
  10. Yoon, B.J. (2016). "ITS system architecture based upon object-oriented methodology." Journal of Korea Society of Disaster Information, Vol. 12, No. 1, pp. 105-115. 10.15683/kosdi.2016.3.31.105
Information
  • Publisher :The Korean Society of Disaster Information
  • Publisher(Ko) :한국재난정보학회
  • Journal Title :Journal of the Society of Disaster Information
  • Journal Title(Ko) :한국재난정보학회논문집
  • Volume : 18
  • No :4
  • Pages :706-712