DOI QR코드

DOI QR Code

조석현상이 방조제 경계면의 응력-변형 거동에 미치는 영향 분석

The Analysis of Tidal Effect on Stress-Strain Behavior in the Boundary Surface of Sea Dike Embankment

  • 임성훈 (공주대학교 산업과학대학 지역건설공학전공)
  • 투고 : 2013.01.10
  • 심사 : 2013.02.04
  • 발행 : 2013.03.31

초록

This study was performed for the purpose of analyzing the effect of tide on the stress-strain behavior in the boundary surface of sea dike embankment. Tide is a dynamic condition, but there are not suitable numerical models to solve the dynamic embankment condition caused by tide. So the analysis was simplified to quasi dynamic as follow. First, seepage by tide was analyzed according to elapsed time, and the results of the analysis at every hour during one periodic cycle time of 12 hours were applied to the pore water pressure conditions of stress-strain analysis with hyperbolic model by Duncan and Chang. The place at which maximum shear strain took place in the analysis result moved up and down repeatedly along the boundary of the dredged sand fill section and the crashed stone filter section. The value of maximum shear strain was large at high water level of tide. This result means that contraction and relaxation occur in turn repeatedly at every specific position along the boundary, and the repeated action compact loose position with sand moved down from the upper position by gravity. The experiment with the small sea dike model showed the result consistent with the numerical analysis. The surface of sea side on the dike collapsed at high water level after a couple of repetition of the rising and falling of water.

키워드

참고문헌

  1. Arya, L. M., and J. F. Paris, 1981. A physico-empirical model to predict the soil moisture characteristic from particle-size distribution and bulk density data. Soil Science Society of America Journal 45: 1023-1030. https://doi.org/10.2136/sssaj1981.03615995004500060004x
  2. Baek, S. C., and S. Y. Lee, 2011. A study on the behaviour characteristics of the saemangeum sea dike coastal covering stones by sea waves. Journal of Koean Geo-Environmetal Society 12(7): 67-76 (in Korean).
  3. Duncan, J. M., and C. Y. Chang, 1970. Nonlinear analysis of stress and strain in soils. Journal of the Soil Mechanics and Foundations Division ASCE 96 (SM5): 1629-1654.
  4. Eam, S. H., 2012. The Study on the relationship between the hydraulic head loss rate and the physical properties of dredged sand, 0-155. Ansan, Gyeonggi: Rural Research Institute of Korea Rural Community Corporation (in Korean).
  5. Encyclopedia of Korean Culture. http://enkorea.aks.ac. kr (in Korean).
  6. Green, R. E., and J. C. Corey, 1971. Calculation of hydraulic conductivity: a further evaluation of some predictive methods. Soil Science Society of America Proceedings 35: 3-8. https://doi.org/10.2136/sssaj1971.03615995003500010010x
  7. Han K. S., and Y. S. Lee, 2011. A study on the stress-deformation properties of filter layer on sea dike slope, Inst. of Ind. Tech. Journal, Kyonggi Univ. 39: 185-202 (in Korean).
  8. Joh, H. L., 1996. Tideland reclamation in korea, 0-406. Uiwang, Gyeonggi: Rural Development Corporation (in Korean).
  9. Korean ministry for Agriculture, Forestry and Fisheries, 1991. Planning and design manual of improvement offarmland project: coastal reclamation 267. (in Korean).
  10. Korean ministry for Agriculture, Forestry, 1997. The Study on revision of the planning and design manual of improvement of farmland project: farmland maintenance, Coastal Reclamation, pipline 168. (in Korean).
  11. Kim, S. P., P. W. Chang, and C. W. Woo, 2000, An experimental study on the ground deformation caused by sea-dike construction. Journal of the Korean Society of Agricultural Engineers 42(5): 78-83 (in Korean).
  12. Mun, D. S., 2000. Handbook of planning and design of improvement of farmland project, chapter 4 tideland reclamation, 1032-1043. Uiwang, Gyeonggi: Rural Development Corporation (in Korean).
  13. Oh, N. S., and K. S. Lee,, 2001. Seepage analysis of sea dike under unsteady state. Journal of Korean Society of Coastal and Ocean Engineers 13(1): 35-45 (in Korean).
  14. Park, C. S., J. H. Kim, and S. I. Lee, 2012. A study on the characteristics of infiltration of sea dike by field investigation and seepage model test. Journal of Korean Society of Coastal and Ocean Engineers 24 (4): 247-256 (in Korean). https://doi.org/10.9765/KSCOE.2012.24.4.247
  15. http://kosis.kr/gen_etl/start.jsp?orgId=311&tblId=TX_31101_A020&conn_path=I2&path (in Korean).

피인용 문헌

  1. The Estimation of Seepage Blocking State with the Normalized Hydraulic Head Loss Rate at Each Seepage Segment in Sea Dike Embankment vol.56, pp.6, 2014, https://doi.org/10.5389/KSAE.2014.56.6.159
  2. Development of Seepage Monitoring and Analysis Method with the Hydraulic Head Loss Rate in Sea Dike vol.56, pp.6, 2014, https://doi.org/10.5389/KSAE.2014.56.6.001