Numerical Studies on Performance of Helical Pile-supported Embankments Over Soft Clay

Document Type : Original Article

Authors

Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran

Abstract

The need for practical and economical solutions to increase the stability of embankments and reduce their settlement is a significant issues in geotechnical engineering. An effective approach to improve the overall performance of embankment systems is using structural elements such as piles. In recent years the use of helical piles has gained consideration due to their proper performance under compressive and tensile loads, quick and easy installation, and elimination of concreting problems. This study investigates the performance of embankments supported by helical piles through a 3D numerical study using the Abaqus software. The validation was performed according to the experimental and field data provided by other researchers. Then, 3D numerical models were developed to investigate the effects of pile caps, the ratio of helix diameter to shaft diameter, the number of helices, and the optimum spacing of helices. The finite element modeling results indicated that increasing the number of helices and changing their spacing had no significant impact on controlling the settlement. It was also found that the load transfer mechanism parameters had a direct relationship with the helix dimensions and shaft diameter. Adding helices to piles increased their bearing capacity, improving parameters of the load transfer mechanism, such that the arching in a pile with three helices decreased by 40% compared to the one with one helix. The results also revealed that on average, 80% of the load imposed on a pile was sustained by the shaft, and helices had a smaller effect on the settlement of pile-supported embankments.

Graphical Abstract

Numerical Studies on Performance of Helical Pile-supported Embankments Over Soft Clay

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References

  1. Han J, Gabr M. Numerical analysis of geosynthetic-reinforced and pile-supported earth platforms over soft soil. Journal of geotechnical and geoenvironmental engineering. 2002;128(1):44-53. https://doi.org/10.1061/(ASCE)10900241(2002)128:1(44)
  2. Chen R, Chen Y, Han J, Xu Z. A theoretical solution for pile-supported embankments on soft soils under one-dimensional compression. Canadian Geotechnical Journal. 2008;45(5):611-23. https://doi.org/10.1139/t08-003
  3. Brohi AS, Saand A, Sahito ZA. 3D Numerical Modeling of Pile embankment performance on Soft Soil. International Journal. 2021;9(6). https://doi.org/10.30534/ijeter/2021/16962021
  4. Zhang D, Zhang Y, Kim CW, Meng Y, Garg A, Garg A, et al. Effectiveness of CFG pile-slab structure on soft soil for supporting high-speed railway embankment. Soils and Foundations. 2018;58(6):1458-75. https://doi.org/10.1016/j.sandf.2018.08.007
  5. Ding X, Luan L, Liu H, Zheng C, Zhou H, Qin H. Performance of X-section cast-in-place concrete piles for highway constructions over soft clays. Transportation Geotechnics. 2020;22:100310. https://doi.org/10.1016/j.trgeo.2019.100310
  6. Briançon L, Simon B. Pile-supported embankment over soft soil for a high-speed line. Geosynthetics International. 2017;24(3):293-305. https://doi.org/10.1680/jgein.17.00002
  7. Xu C, Song S, Han J. Scaled model tests on influence factors of full geosynthetic-reinforced pile-supported embankments. Geosynthetics International. 2016;23(2):140-53. https://doi.org/10.1680/jgein.15.00038
  8. Fagundes DF, Almeida MS, Thorel L, Blanc M. Load transfer mechanism and deformation of reinforced piled embankments. Geotextiles and Geomembranes. 2017;45(2):1-10. https://doi.org/10.1016/j.geotexmem.2016.11.002
  9. Zhao M, Liu C, El-Korchi T, Song H, Tao M. Performance of geogrid-reinforced and PTC pile-supported embankment in a highway widening project over soft soils. Journal of Geotechnical and Geoenvironmental Engineering. 2019;145(11):06019014. https://doi.org/10.1061/(ASCE)GT.1943-5606.0002157
  10. Lee T, Lee S, Lee I-W, Jung Y-H. Quantitative performance evaluation of GRPE: a full-scale modeling approach. Geosynthetics International. 2020;27(3):342-7. https://doi.org/10.1680/jgein.19.00017
  11. Bangia T, Raskar R. Cohesive methodology in construction of enclosure for 3.6 m devasthal optical telescope. HighTech and Innovation Journal. 2022;3(2):162-74. https://doi.org/10.28991/HIJ-2022-03-02-05
  12. Lu W, Miao L, Wang F, Zhang J, Zhang Y, Wang H. A case study on geogrid-reinforced and pile-supported widened highway embankment. Geosynthetics International. 2020;27(3):261-74. https://doi.org/10.1680/jgein.19.00024
  13. Wu P-C, Feng W-Q, Yin J-H. Numerical study of creep effects on settlements and load transfer mechanisms of soft soil improved by deep cement mixed soil columns under embankment load. Geotextiles and Geomembranes. 2020;48(3):331-48. https://doi.org/10.1016/j.geotexmem.2019.12.005
  14. Phutthananon C, Jongpradist P, Jongpradist P, Dias D, Baroth J. Parametric analysis and optimization of T-shaped and conventional deep cement mixing column-supported embankments. Computers and Geotechnics. 2020;122:103555. https://doi.org/10.1016/j.compgeo.2020.103555
  15. Bahrami M, Marandi S. Large-scale experimental study on collapsible soil improvement using encased stone columns. International Journal of Engineering, Transactions B: Applications, . 2021;34(5):1145-55.  https://doi.org/10.5829/ije.2021.34.05b.08
  16. Pham TA. Design and analysis of geosynthetic-reinforced and floating column-supported embankments. International Journal of Geotechnical Engineering. 2022;16(10):1276-92. https://doi.org/10.1080/19386362.2021.1997209
  17. Umravia N, Solanki CH. Numerical Analysis to Study Lateral Behavior of Cement Fly Ash Gravel Piles under the Soft Soil. International Journal of Engineering, Transactions B: Applications,. 2022;35(11):2111-9. https://doi.org/10.5829/ije.2022.35.11b.06
  18. Ye X, Wu J, Li G. Time-dependent field performance of PHC pile-cap-beam-supported embankment over soft marine clay. Transportation Geotechnics. 2021;26:100435. https://doi.org/10.1016/j.trgeo.2020.100435
  19. Wu J, Ye X, Li J, Li G. Field and numerical studies on the performance of high embankment built on soft soil reinforced with PHC piles. Computers and Geotechnics. 2019;107:1-13. https://doi.org/10.1016/j.compgeo.2018.11.019
  20. Ahmed D, bt Taib SNL, Ayadat T, Hasan A. Numerical analysis of the carrying capacity of a piled raft foundation in soft clayey soils. Civil Engineering Journal. 2022;8(04). https://doi.org/10.28991/CEJ-2022-08-04-01
  21. Liu K-F, Feng W-Q, Cai Y-H, Xu H, Wu P-C. Physical model study of pile type effect on long-term settlement of geosynthetic-reinforced pile-supported embankment under traffic loading. Transportation Geotechnics. 2023;38:100923. https://doi.org/10.1016/j.trgeo.2022.100923
  22. Lutenegger AJ. Historical development of iron screw-pile foundations: 1836–1900. The International Journal for the History of Engineering & Technology. 2011;81(1):108-28. https://doi.org/10.1179/175812109X12547332391989
  23. Sakr M. Performance of helical piles in oil sand. Canadian Geotechnical Journal. 2009;46(9):1046-61. https://doi.org/10.1139/t09-044
  24. Spagnoli G, de Hollanda Cavalcanti Tsuha C. A review on the behavior of helical piles as a potential offshore foundation system. Marine Georesources & Geotechnology. 2020;38(9):1013-36. https://doi.org/10.1080/1064119X.2020.1729905
  25. Elkasabgy M, El Naggar MH. Axial compressive response of large-capacity helical and driven steel piles in cohesive soil. Canadian Geotechnical Journal. 2015;52(2):224-43. https://doi.org/10.1139/cgj-2012-0331
  26. Alwalan M, Alnuaim A. Axial Loading Effect on the Behavior of Large Helical Pile Groups in Sandy Soil. Arabian Journal for Science and Engineering. 2022;47(4):5017-31. https://doi.org/10.1007/s13369-021-06422-9
  27. Nowkandeh MJ, Choobbasti AJ. Numerical study of single helical piles and helical pile groups under compressive loading in cohesive and cohesionless soils. Bulletin of Engineering Geology and the Environment. 2021;80:4001-23. https://doi.org/10.1007/s10064-021-02158-w
  28. Elsherbiny ZH, El Naggar MH. Axial compressive capacity of helical piles from field tests and numerical study. Canadian Geotechnical Journal. 2013;50(12):1191-203. https://doi.org/10.1139/cgj-2012-0487
  29. Terzaghi K. Theoretical soil mechanics1943.
  30. Hewlett W, Randolph M, editors. Analysis of piled embankments. International journal of rock mechanics and mining sciences and geomechanics abstracts; 1988: Elsevier Science.
  31. Tang SK. Arching in piled embankments 1992.
  32. Le Hello B, Villard P. Embankments reinforced by piles and geosynthetics—Numerical and experimental studies dealing with the transfer of load on the soil embankment. Engineering geology. 2009;106(1-2):78-91. https://doi.org/10.1016/j.enggeo.2009.03.001
  33. Bhasi A, Rajagopal K. Numerical study of basal reinforced embankments supported on floating/end bearing piles considering pile–soil interaction. Geotextiles and Geomembranes. 2015;43(6):524-36. https://doi.org/10.1016/j.geotexmem.2015.05.003
  34. Ariyarathne P, Liyanapathirana D. Review of existing design methods for geosynthetic-reinforced pile-supported embankments. Soils and Foundations. 2015;55(1):17-34. https://doi.org/10.1016/j.sandf.2014.12.002
  35. Meena NK, Nimbalkar S, Fatahi B, Yang G. Effects of soil arching on behavior of pile-supported railway embankment: 2D FEM approach. Computers and Geotechnics. 2020;123:103601. https://doi.org/10.1016/j.compgeo.2020.103601
  36. Pham TA, Dias D. 3D numerical study of the performance of geosynthetic-reinforced and pile-supported embankments. Soils and Foundations. 2021;61(5):1319-42. https://doi.org/10.1016/j.sandf.2021.07.002
  37. Al-Tememy M, Al-Neami M, Asswad M. Finite element analysis on behavior of single battered pile in sandy soil under pullout loading. International Journal of Engineering, Transactions C: Aspects. 2022;35(6):1127-34. https://doi.org/10.5829/ije.2022.35.06c.04
  38. Khanmohammadi M, Fakharian K. Evaluation of performance of piled-raft foundations on soft clay: A case study. Geomechanics and Engineering. 2018;14(1):43-50. https://doi.org/10.12989/gae.2018.14.1.043
  39. Shawky O, Altahrany AI, Elmeligy M. Study of lateral load influence on behaviour of negative skin friction on circular and square piles. Civil Engineering Journal. 2022;8(10):2125-53. https://doi.org/10.28991/CEJ-2022-08-10-08
  40. Chen R, Xu Z, Chen Y, Ling D, Zhu B. Field tests on pile-supported embankments over soft ground. Journal of Geotechnical and Geoenvironmental Engineering. 2010;136(6):777-85. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000295
International Journal of Engineering
Volume 37, Issue 4
TRANSACTIONS A: Basics
April 2024
Pages 596-607

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