Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of Embankment-Pile on Preventing Lateral Movement of Buried Pipe

성토지지말뚝의 지하매설관 측방이동 방지효과

  • Kim, Jae-Hong (Infrastructure Research Center KIWE, K-water) ;
  • Hong, Won-Pyo (Dept. of Civil, Environmental & Plant Engrg., ChungAng Univ.)
  • 김재홍 (한국수자원공사 K-water연구원) ;
  • 홍원표 (중앙대학교 건설환경플랜트공학과)
  • Received : 2014.11.10
  • Accepted : 2014.12.22
  • Published : 2014.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

To observe the behavior of lateral deformation of buried pipe and the preventing effect of embankment piles against the lateral deformation, a series of full-scale field tests were performed on a reclaimed coastal area. A buried pipe was installed in the west coast undergoing reclamation and embankment was performed by three steps. Then vertical settlement and lateral displacement were measured by the settlement plate and the inclinometer. Embankment pile system were applied to prevent the lateral displacement of buried pipe. Heave of the buried pipe slightly happens during embankment and following settlement. Finally the behavior steadily converged. The preventing effect of the embankment pile was approximately two times stronger than non-reinforcement. Both settlement and lateral displacement appear to be bigger at upper ground and smaller at lower ground.

측방유동 지반 속에 설치된 매설관의 측방이동과 이에 대한 성토지지말뚝의 방지효과를 관찰하기 위하여 일련의 현장 실험시공을 시행하였다. 매립중인 서해안 연약지반에 지하매설관(H.P:400mm)를 부설하고 인접 위치에 성토를 3단계로 시행하여 침하판과 지중경사계를 이용하여 지하매설관의 수직변위(침하)와 수평변위를 확인하였다. 성토에 따른 측방유동 억지대책으로는 성토지지말뚝을 설치하였다. 실험시공 결과 성토도중에는 매설관이 미미하게 융기하는 현상이 발생하였고 추후 침하하다 점차 수렴하는 거동으로 나타났다. 성토지지말뚝 보강 효과는 약 2.0배로 확인되었다. 또한, 침하와 변위는 상부지반에서는 크고 하부지반에서는 적게 침하가 발생하였고 변위는 비례하여 발생하는 것으로 나타났다.

Keywords

References

  1. Aleksandar Sedmak Vesic (1972), "Expansion of Cavities In Infinite Soil Mass", ASCE, Vol.98, No.7, pp.265-290.
  2. Crofts, J. E., Menzies, B. K., and Tarzi, A. I. (1977), "Lateral Displacement of Shallow Buried Pipelines Due To Adjacent Deep Trench Excavations", Geotechnique, Vol.27, No.2, pp.161-179. https://doi.org/10.1680/geot.1977.27.2.161
  3. Gartung, E. and Verspohl, J. (1996), "Geogrid reinforced embankment on piles-Monitoring", Proceeding of international symposium on earth Reinforcement, Fukuoka, Japan, pp.209-214.
  4. Hewlett W. J. and Randolph, M. F. (1988), "Analysis of piled embankments", Ground Engineering. London England, Vol.21, No.3, pp.12-18.
  5. Holmberg, S. (1978), "Bridge approaches on soft clay supported by Embankment Pile", Geotechnical Engineering, Vol.10, pp.77-89.
  6. Hong, W. P. and Kang, S. I. (2000), "Model Tests for Vertical Loads Acting on Embankment Piles", Journal of the Korean Geo-Environmental Society. Vol.16, No.8, pp.171-181.
  7. Hong, W. P. and Kim, J. H. (2010), "Lateral Earth Pressures on Buried Pipes due to Lateral Flow of Soft Grounds", Journal of the Korean Geo-Environmental Society. Vol.11, No.9, pp.27-38.
  8. Hong, W. P. and Lee, K.W. (2002), "A Study on the Effect of Carrying Vertical Loads Over Embankment Piles", Journal of the Korean Geo-engineering Society, Vol.18, No.4, pp.285-294.
  9. Hong, W. P. and Lee, K. W. (2003), "Model Tests on Embankment Piles with Isolaterd Pile Caps", Journal of the Korean Geo- Environmental Society, Vol.19, No.6, pp.49-59.
  10. Hong, W.P., Yun, J. M., and Seo, M.S. (1999), "Failure Modes in Piles Embankment", Journal of the Korean Geo-Environmental Society, Vol.15, No.4, pp.207-220.
  11. Hong, W. P., Lee, J. H., and Jeon, S. K. (2000), "Theoretical Analysis of Embankment Loads Acting on Piles", Journal of the Korean Geo-engineering Society, Vol.16, No.1, pp.131-143.
  12. Horgan, G. J. and Sarsby, R. W. (2002), "The Arching Effect of Soils over Voids and Piles incorporating Geosynthetics Reinforcement", Proc. of the 7th Inter. Conf. on Geosynthetics, Nice. France, pp. 373-378.
  13. Ito, T. and Matsui, T. (1975), "Methods to estimate lateral force acting on stabilizing piles", Soils and Foundations. Vol.15, No.4, pp.43-59. https://doi.org/10.3208/sandf1972.15.4_43
  14. Ito, T., Matsui, T. and Hong, W. P. (1982), "Extended design method for multi-row stabilizing piles against landslide", Soils and Foundations, Vol.22, No.1, pp.1-13.
  15. Johnes, C.J.F.P., Lawson, C. R., and Ayres, D. J. (1990), "Geotextile reinforced piled embankment", Geomenbrance and Related Products, Balkema, Rotterdam, ISBN 90 5410 8339, pp.150-160.
  16. Lee, S. H., Lee, Y. N., Hong, W. P., and Lee, K. W. (2001), "Field Tests for Vertical Loads Acting on Embankment Piles", Journal of the Korean Geo-engineering Society, Vol.17, No.4, pp.221-229.
  17. Mohardb, M., Kulak, G. L., Elwi, A., and Murry, D. W. (2001), "Testing and analysis of steel pipe segments", Journal of Transportation Engineering, Vol.127, No.5, pp.408-417. https://doi.org/10.1061/(ASCE)0733-947X(2001)127:5(408)
  18. Pettibone, C. H. and Amster, K. H. (1967), "Distribution of soil pressure on concrete pipe", Journal of Pipeline Division, Vol.93, No.2, pp.85-102.
  19. Reid, W. M. and Buchanan (1984), "Bridge approach support pilling", Piling and Ground Treatment, Thomas Telford Limited, Lomdon, pp.267-274
  20. Shmulevich, I., Galili, N., and Foux, A. (1985), "Soil stress distribution around buried pipe", Journal of Transportation Engineering, Vol.112, No.5, pp.481-493.
  21. Sargand, S. M. and Hazen, G. A. (1993), "Performance of deepcorrugated steel box-type culvert", Geotech Engng Div ASCE, Vol. 119, No.3, pp.433-452 https://doi.org/10.1061/(ASCE)0733-9410(1993)119:3(433)
  22. Terzaghi, K. (1943), "Theoretical soil mechanics", John Wiley & Sons, New York, pp.66-75.

Cited by

  1. Lateral earth pressure on a pipe buried in soft grounds undergoing lateral movement vol.1, pp.3, 2016, https://doi.org/10.1080/24705314.2016.1211238