Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Laboratory Test of Piled-Raft Foundation Improved by Gravel Mat

Gravel Mat로 보강된 말뚝지지 전면기초의 실내모형실험

  • Seo, Young-Kyo (Department of Ocean Engineering, Korea Maritime University) ;
  • Lee, Jeong-Hoon (Department of Ocean Engineering, Korea Maritime University)
  • 서영교 (한국해양대학교 해양공학과) ;
  • 이정훈 (한국해양대학교 해양공학과)
  • Received : 2010.10.04
  • Accepted : 2011.04.22
  • Published : 2011.04.30
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Abstract

A piled raft foundation is one of the systems used to reduce the settlement of structures. However, the general design method for a piled raft foundation system assumes that the piles only support external loads, which exclude the bearing capacity of the raft itself. In this study, an experimental model test was performed to evaluate the raft capacity for the external load on the sand. Additionally, a part of the sandy ground under the raft was replaced with a gravel mat to reinforce the piled raft foundation system and increase the bearing capacity. Then, parametric studies of the reinforced ground were performed to determine the displacement and load-sharing ratio of the piled raft foundation system.

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References

  1. 김경남, 이수형, 정충기, 이해성 (1999). "Piled-raft 기초의 부등침하 최소화를 위한 최적말뚝배치", 대한토목학회논문집, 19(III-4), pp 831-839.
  2. 김홍택, 강인규, 박정주, 박순규 (2002). "사질토 지반에서 연직하중을 받는 Piled-Raft 기초시스템의 하중분담특성에 관한 실내모형실험 연구" 대한토목학회논문집, 22(2-C), pp 111-120.
  3. 김홍택, 박시삼, 강인규, 최효범 (2002). "Piled Raft 기초 적용사례 분석", 한국지반공학회, 봄 학술발표회 논문집, pp 597-604.
  4. Hain, S.J. and Lee, I.K. (1978) "The Analysis of Flexible Raft-Pile Systems", Geotechnique, Vol 28, No 1, pp 65-83. https://doi.org/10.1680/geot.1978.28.1.65
  5. Horikoshi, K. and Randolph, M.F. (1996). "Centrifuge Modelling of Piled Raft Foundations on Clay", Geotechnique, Vol 46, No 4, pp 741-752. https://doi.org/10.1680/geot.1996.46.4.741
  6. Katzenbach, R. and Reul, O. (1997) Theme Lecture: Design and Performance of Piled Rafts, Proceedings of the 14th International Conference on Soil Mechanics and Foundation Engineering, Hamburg, Vol 4, pp 2253-2256.
  7. Parakosa, W.A. and Kulhawy, F.H. (2001). "Piled Raft Foundation Design", J. Geotech. and Geoenv. Eng., ASCE, Vol 127, No 1, pp 17-24. https://doi.org/10.1061/(ASCE)1090-0241(2001)127:1(17)
  8. Poulos, H.G. (2001). "Piled-raft Foundation; Design and Application", Geotechique, Vol 51, No 2, pp 95-113. https://doi.org/10.1680/geot.51.2.95.40292
  9. Poulos, H.G. (2005). "Piled Raft and Compensated Piled Raft Foundation for Soft Soil Sites", Advances on Designin and Testing Deep Foundation, Geotechnical special publications No 129, ASCE, pp 214-235.
  10. Seo, Y.K. and Jeong, S.G. (2004). "Parametric Study of Piled Raft Foundation on Soft Clay", J. of Ocean Science and Technology, Korean Society of Costal and Ocean Engineers, Vol 1, No 2, pp 147-152.