Geomechanics and Engineering

  • 제12권6호
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  • Pages.1021-1046
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  • 2017
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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Finite element analyses of the stability of a soil block reinforced by shear pins

  • Ouch, Rithy (Geotechnical Research Unit, Department of Civil Engineering, Chulalongkorn University) ;
  • Ukritchon, Boonchai (Geotechnical Research Unit, Department of Civil Engineering, Chulalongkorn University) ;
  • Pipatpongsa, Thirapong (Department of Urban Management, Kyoto University) ;
  • Khosravi, Mohammad Hossein (School of Mining Engineering, College of Engineering, University of Tehran)
  • 투고 : 2016.05.16
  • 심사 : 2017.02.02
  • 발행 : 2017.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

The assessment of slope stability is an essential task in geotechnical engineering. In this paper, a three-dimensional (3D) finite element analysis (FEA) was employed to investigate the performance of different shear pin arrangements to increase the stability of a soil block resting on an inclined plane with a low-interface friction plane. In the numerical models, the soil block was modeled by volume elements with linear elastic perfectly plastic material in a drained condition, while the shear pins were modeled by volume elements with linear elastic material. Interface elements were used along the bedding plane (bedding interface element) and around the shear pins (shear pin interface element) to simulate the soil-structure interaction. Bedding interface elements were used to capture the shear sliding of the soil on the low-interface friction plane while shear pin interface elements were used to model the shear bonding of the soil around the pins. A failure analysis was performed by means of the gravity loading method. The results of the 3D FEA with the numerical models were compared to those with the physical models for all cases. The effects of the number of shear pins, the shear pin locations, the different shear pin arrangements, the thickness and the width of the soil block and the associated failure mechanisms were discussed.

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과제정보

연구 과제 주관 기관 : ASEAN University

참고문헌

  1. Ausilio, E., Conte, E. and Dente, G. (2001), "Stability analysis of slopes reinforced with piles", Comput. Geotech., 28(8), 591-611. https://doi.org/10.1016/S0266-352X(01)00013-1
  2. Brinkgreve, R. (2012), Plaxis 3D 2012, Plaxis Bv, Netherlands.
  3. Brinkgreve, R., Swolfs, W., Engin, E., Waterman, D., Chesaru, A., Bonnier P. and Galavi V. (2013), PLAXIS 3D Reference Manual, Plaxis Bv, Netherlands.
  4. Chen, W.F. (1975), Limit Analysis and Soil Plasticity, Elsevier Amsterdam, Netherlands.
  5. Fatahi, B., Basack, S., Ryan, P., Zhou, W.-H. and Khabbaz, H. (2014), "Performance of laterally loaded piles considering soil and interface parameters", Geomech. Eng., Int. J., 7(5), 495-524. https://doi.org/10.12989/gae.2014.7.5.495
  6. Galli, A. and di Prisco, C. (2012), "Displacement-based design procedure for slope-stabilizing piles", Can. Geotech. J., 50(1), 41-53. https://doi.org/10.1139/cgj-2012-0104
  7. Griffiths, D. and Lane, P. (1999), "Slope stability analysis by finite elements", Geotechnique, 49(3), 387-403. https://doi.org/10.1680/geot.1999.49.3.387
  8. Haigh, S.K. and Gopal Madabhushi, S. (2011), "Centrifuge modelling of pile-soil interaction in liquefiable slopes", Geomech. Eng., Int. J., 3(1), 1-16. https://doi.org/10.12989/gae.2011.3.1.001
  9. Ho, I.-H. (2014), "Numerical study of slope-stabilizing piles in undrained clayey slopes with a weak thin layer", Int. J. Geomech., 06014025-1-12.
  10. Ito, T. and Matsui, T. (1975), "Methods to estimate lateral force acting on stabilizing piles", Soils Found., 15(4), 43-59. https://doi.org/10.3208/sandf1972.15.4_43
  11. Ito, T., Matsui, T. and Hong, W.P. (1982), "Extended design method for multi-row stabilizing piles against landslide", Soils Found., 22(1), 1-13. https://doi.org/10.3208/sandf1972.22.1
  12. Kanagasabai, S., Smethurst, J. and Powrie, W. (2011), "Three-dimensional numerical modelling of discrete piles used to stabilize landslides", Can. Geotech. J., 48(9), 1393-1411. https://doi.org/10.1139/t11-046
  13. Keawsawasvong, S. and Ukritchon, B. (2017), "Undrained limiting pressure behind soil gaps in contiguous pile walls", Comput. Geotech., 83, 152-158. https://doi.org/10.1016/j.compgeo.2016.11.007
  14. Khosravi, M.H. (2012), Arching Effect in Geomaterials with Applications to Retaining Walls and Undercut Slopes, Doctor of Philosophy, Tokyo Institute of Technology.
  15. Khosravi, M.H., Pipatpongsa, T., Takahashi, A. and Takemura, J. (2011), "Arch action over an excavated pit on a stable scarp investigated by physical model tests", Soils Found., 51(4), 723-735. https://doi.org/10.3208/sandf.51.723
  16. Khosravi, M.H., Tang, L., Pipatpongsa, T., Takemura, J. and Doncommul, P. (2012), "Performance of counterweight balance on stability of undercut slope evaluated by physical modeling", Int. J. Geotech. Eng., 6(2), 193-205. https://doi.org/10.3328/IJGE.2012.06.02.193-205
  17. Kourkoulis, R., Gelagoti, F., Anastasopoulos, I. and Gazetas, G. (2011), "Slope stabilizing piles and pilegroups, parametric study and design insights", J. Geotech. Geoenviron. Eng., 137(7), 663-677. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000479
  18. Kourkoulis, R., Gelagoti, F., Anastasopoulos, I. and Gazetas, G. (2012), "Hybrid method for analysis and design of slope stabilizing piles", J. Geotech. Geoenviron. Eng., 138(1), 1-14. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000546
  19. Li, L. and Liang, R.Y. (2014), "Limit equilibrium based design approach for slope stabilization using multiple rows of drilled shafts", Comput. Geotech., 59, 67-74. https://doi.org/10.1016/j.compgeo.2014.03.001
  20. Li, A.J., Merifield, R. and Lyamin, A. (2009), "Limit analysis solutions for three dimensional undrained slopes", Comput. Geotech., 36(8), 1330-1351. https://doi.org/10.1016/j.compgeo.2009.06.002
  21. Li, A.J., Merifield, R. and Lyamin, A. (2010), "Three-dimensional stability charts for slopes based on limit analysis methods", Can. Geotech. J., 47(12), 1316-1334. https://doi.org/10.1139/T10-030
  22. Li, X., He, S., Luo, Y. and Wu, Y. (2011), "Numerical studies of the position of piles in slope stabilization", Geomech. Geoeng., 6(3), 209-215. https://doi.org/10.1080/17486025.2011.578668
  23. Liang, R.Y., Joorabchi, A.E. and Li, L. (2014), "Analysis and design method for slope stabilization using a row of drilled shafts", J. Geotech. Geoenviron. Eng., 140(5), 04014001. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001070
  24. Madhav, M.R., Sharma, J. and Sivakumar, V. (2009), "Settlement of and load distribution in a granular piled raft", Geomech. Eng., Int. J., 1(1), 97-112. https://doi.org/10.12989/gae.2009.1.1.097
  25. 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., Int. J., 5(6), 519-540. https://doi.org/10.12989/gae.2013.5.6.519
  26. Ouch, R., Ukritchon, B. and Pipatpongsa, T. (2016), "Stability of soil block on low interface friction plane with and without side supports", Eng. J., 20(2), 123-145.
  27. Pipatpongsa, T., Khosravi, M. and Takemura, J. (2013), "Physical modeling of arch action in undercut slopes with actual engineering practice to Mae Moh open-pit mine of Thailand", Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering (ICSMGE18), Paris, France, September.
  28. Poulos, H.G. (1995), "Design of reinforcing piles to increase slope stability", Can. Geotech. J., 32(5), 808-818. https://doi.org/10.1139/t95-078
  29. Pradel, D., Garner, J. and Kwok, A.O.L. (2010), "Design of drilled shafts to enhance slope stability", Geotechnical Special Publication, 384(208 GSP), 920-927.
  30. Qian, Z.Z., Lu, X.L., Yang, W.Z. and Cui, Q. (2014), "Behaviour of micropiles in collapsible loess under tension or compression load", Geomech. Eng., Int. J., 7(5), 477-493. https://doi.org/10.12989/gae.2014.7.5.477
  31. Sloan, S.W. (2013), "Geotechnical stability analysis", Geotechnique, 63(7), 531-572. https://doi.org/10.1680/geot.12.RL.001
  32. Wei, W.B. and Cheng, Y.M. (2009), "Strength reduction analysis for slope reinforced with one row of piles", Comput. Geotech., 36(7), 1176-1185. https://doi.org/10.1016/j.compgeo.2009.05.004
  33. Wu, Y., Yamamoto, H. and Yao, Y. (2013), "Numerical study on bearing behavior of pile considering sand particle crushing", Geomech. Eng., Int. J., 5(3), 241-261. https://doi.org/10.12989/gae.2013.5.3.241
  34. Yu, H., Salgado, R., Sloan, S.W. and Kim, J. (1998), "Limit analysis versus limit equilibrium for slope stability", J. Geotech. Geoenviron. Eng., 124(1), 1-11. https://doi.org/10.1061/(ASCE)1090-0241(1998)124:1(1)
  35. Zhang, G., Tan, J., Zhang, L. and Xiang, Y. (2015), "Linear regression analysis for factors influencing displacement of high-filled embankment slopes", Geomech. Eng. Int. J., 8(4), 511-521. https://doi.org/10.12989/gae.2015.8.4.511
  36. Zhou, C., Shao W. and Westen, C.J.V. (2014), "Comparing two methods to estimate lateral force acting on stabilizing piles for a landslide in the Three Gorges Reservoir, China", Eng. Geol., 173, 41-53. https://doi.org/10.1016/j.enggeo.2014.02.004