Geomechanics and Engineering

  • 제16권2호
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  • Pages.187-194
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  • 2018
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

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Assessment the effect of pile intervals on settlement and bending moment raft analysis of piled raft foundations

  • Ghiasi, Vahed (Civil Engineering Department, Malayer University) ;
  • Moradi, Mobin (Civil Engineering Department, Malayer University)
  • 투고 : 2017.03.11
  • 심사 : 2018.06.11
  • 발행 : 2018.10.10
⟨ 이전 논문 다음 논문 ⟩

초록

Application the pile group foundation to reduce overall settlement of the foundation and also avoid a very fruitful settlement of foundations, inconsistent was carried out. In such a case, in event that the Foundation, not as a mere pile group, which as a system consisting of a broad foundation with pile Group, economic design criteria will be provided in spite of high safety. A new approach in the design of the Foundation can be introduced as the piles are just a tool to improve the parameters of soil hardness; that it can work with detachable piles from raft. Centralized arrangement of piles as the most optimal layout of piles in reducing inconsistent settlement, which is the lowest value of resulting layout in this differential settlement. Using the combination of piles connected and disconnected to form the raft, bending moment created in the raft is reduced. It also concentrated arrangements have greatest effect in reducing amount of moment applied to the raft.

키워드

참고문헌

  1. Al-Omari, R.R., Al-Azzawi, A.A. and AlAbbas, K.A. (2016), "Behavior of piled rafts overlying a tunnel in sandy soil", Geomech. Eng., 10(5), 599-615. https://doi.org/10.12989/gae.2016.10.5.599
  2. Burland, J.B., Broms, B.B. and de Mello, V.F.B. (1978), "Behaviour of foundations and structures", Proceedings of the 9th International Conference on Soil Mechanics and Foundation Engineering, Tokyo, Japan, July.
  3. Cao, X.D., Wong, I.H. and Chang, M.F. (2004), "Behavior of model rafts resting on pile-reinforced sand", J. Geotech. Geoenviron. Eng., 130(2), 129-138. https://doi.org/10.1061/(ASCE)1090-0241(2004)130:2(129)
  4. Comodromos, E.M., Papadopoullou, M.C. and Rentzeperis, I.K. (2009), "Pile foundation analysis and design using experimental data and 3-D numerical analysis", Comput. Geotech., 36(5), 819-836. https://doi.org/10.1016/j.compgeo.2009.01.011
  5. Delft University of Technology & PLAXIS B.V. (2006), Plaxis 3D Foundation Version 1.6 Reference Manual, Delft University of Technology & PLAXIS B.V.
  6. El-Mossallamy, Y. (2004), "The interactive process between field monitoring and numerical analyses by the development of piled raft foundation. Geotechnical innovation", Proceedings of the International Symposium, Stuttgart, Germany, June.
  7. El-Mossallamy, Y., Lutz, B. and Duerrwang, R. (2009), "Special aspects related to the behavior of piled raft foundation", Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering, Alexandria, Egypt, October.
  8. Eslami, A. and Malekshah, S. (2011), "Analysis of non-connected piled raft foundations (NCPRF) with cushion by finite element method", Comput. Meth. Civ, Eng., 2(2), 53-68.
  9. Fattah, M.Y., Al-Mosawi, M.J. and Al-Zayadi, A.A. (2013), "Time dependent behavior of piled raft foundation in clayey soil", Geomech. Eng., 5(1), 17-36. https://doi.org/10.12989/gae.2013.5.1.017
  10. Fattah, M.Y., Al Helo, K.H.I. and Abed, H.H. (2017), "Load distribution in pile group embedded in sandy soil containing cavity", KSCE J. Civ. Eng., 22(2), 509-519.
  11. Lee, H.J., Seo, Y.K. and Kim, T.H. (2006), "Numerical analysis of piled-raft foundation considering sand cushion effects", Proceedings of the 16th International Offshore and Polar Engineering Conference, San Francisco, California, U.S.A., May-June.
  12. Lee, S. and Moon, J.S. (2016), "Effect of interactions between piled raft components and soil on behavior of piled raft foundation", KSCE J. Civ. Eng., 21(1), 243-252.
  13. Liang, F.Y., Chen, L.Z. and Shi, X.G. (2003), "Numerical analysis of composite piled raft with cushion subjected to vertical load", Comput. Geotech., 30(5), 43-53.
  14. Nakaia, S., Katoa, H., Ishidaa, R., Manob, H. and Nagatac, M. (2004), "Load bearing mechanism of piled raft foundation during earthquake", Proceedings of the 3rd UJNR Workshop on Soil-Structure Interaction, Menlo Park, California, U.S.A., March.
  15. Nakanishi, K. and Takewaki, I. (2013), "Optimum pile arrangement in piled raft foundation by using simplified settlement analysis and adaptive step-length algorithm", Geomech. Eng., 5(6), 519-540. https://doi.org/10.12989/gae.2013.5.6.519
  16. Nguyen, D.D.C., Kim, D.S. and Jo, S.B. (2014), "Parametric study for optimal design of large piled raft foundations on sand", Comput. Geotech., 55, 14-26. https://doi.org/10.1016/j.compgeo.2013.07.014
  17. Poulos, H.G. (2001), Methods of Analysis of Piled Raft Foundations, A Report Prepared on Behalf of Technical Committee TC18 on Piled Foundations, International Society of Soil Mechanics and Geotechnical Engineering.
  18. Reul, O. and Randolph, M.F. (2003), "Piled rafts in overconsolidated clay: Comparison of in situ measurements and numerical analyses", Geotechnique, 53(3), 301-315.
  19. Russo, G. (1998), "Numerical analysis of piled rafts", J. Numer. Anal. Meth. Geomech., 22(6), 477-493. https://doi.org/10.1002/(SICI)1096-9853(199806)22:6<477::AID-NAG931>3.0.CO;2-H
  20. Sharma, V.J., Vasanvala, S.A. and Solanki, C.H. (2011), "Effect of cushion on composite piled-raft foundation", J. Eng. Res. Stud., 2(4), 132-135.
  21. Solanki, C.H., Vasanvala, S.A. and Patil, J.D. (2013), "A Study on piled raft foundation: State of art", J. Eng. Res. Technol., 2(8), 64-70.
  22. Sommer, H. and Hambach, P. (1974), "Grosspfahlversuche im Ton fur die Grundung der Talbrucke Alzey", Der Bauingenieur, 49, 310-317.
  23. Ta, L.D. and Small, J.C. (1996), "Analysis of piled raft systems in layered soils", J. Numer. Anal. Meth. Geomech., 20, 57-72.
  24. Ta, L.D. and Small, J.C. (1997), "An approximation for analysis of raft and piled raft foundations", Comput. Geotech., 20(2), 105-23. https://doi.org/10.1016/S0266-352X(96)00012-2
  25. Wong, I.H., Chang, M.F., Cao, X.D. (2000), Raft Foundations with Disconnected Settlement Reducing Piles, in Design Application of Raft Foundations and Ground Slabs, Thomas Telford, London, U.K., 469-486.
  26. Zhuang, G.M. and Lee, I.K. (1994), "An elastic analysis of load distribution for raft-pile systems", Finite Element Anal. Des., 18(1-3), 259-272. https://doi.org/10.1016/0168-874X(94)90106-6