Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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Experimental Study of the Changing Characteristics of Geocell with Load Carrying capacity

지오셀 특성 변화에 따른 하중지지력 연구

  • Received : 2012.12.27
  • Accepted : 2013.08.02
  • Published : 2013.09.30
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Abstract

This paper presents the results of a laboratory investigation of the porous pavement substructure effect when reinforced with geocell. In order to analyze load carrying capacity of Geocell, a series of 9 reduced-scale laboratory tests was performed, changing the type, thickness, diameter of Geocell. The results of the analyses indicated that the bearing capacity of the reinforced Geocell increases much more than the non-reinforced Geocell and load carrying capacity was considered to be insignificant according to the type of Geocell. It was also found that the most supportive effects appeared as 30 cm in diameter and 1.8mm in thickness.

본 논문에서는 투수성 포장 하부구조의 지반에 지오셀 보강에 따른 거동특성을 다루었다. 지오셀을 이용한 포장구조체의 하중지지력 증가효과를 고찰하기 위하여 지오셀 결합부의 유형, 벽 두께, 직경을 변화시켜가며 총 9가지의 실험 케이스의 실내 축소모형실험을 진행하여 무보강 투수성 포장에 비해 지오셀로 보강된 포장 하부구조에서 더 큰 지지력이 발현 되는 것으로 나타났고 지오셀의 단면 형태의 관계 없이 거의 일정한 하중 지지력을 보이는 것으로 나타났다. 또한 지오셀 속채움 시 지오셀의 형상은 직경 30cm, 두께 1.8mm에서 가장 지지 효과가 크게 나타나는 것을 알 수 있었다.

Keywords

References

  1. Bathurst, R. J., and Jarett, P. M. (1981), "Largescale model tests of geocomposite mattresses over peat subgrades", Transportation Research Record 1188. Transportation Research Board, Washington, D.C
  2. Dash, S. K. (2012), "Effect of Geocell Type on Load-Carrying Mechanisms of Geocell-Reinforced Sand Foundations", International Journal of Geomechanics, Vol.12, pp.537-548. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000162
  3. Dash, S. K., Krishnaswamy, N. R., and Rajagopal, K. (2001a), "Bearing capacity of strip footings supported on geocellreinforced sand." Geotextiles and Geomembranes, Vol.19, pp.235-256. https://doi.org/10.1016/S0266-1144(01)00006-1
  4. Dash, S. K., Rajagopal, K., and Krishnaswamy, N. R. (2001b), "Strip footing on geocell reinforced sand beds with additional planar reinforcement" Geotextiles and Geomembranes, Vol.19, pp.529-538. https://doi.org/10.1016/S0266-1144(01)00022-X
  5. Dash, S. K., Rajagopal, K., and Krishnaswamy, N. R. (2004), "Performance of different geosynthetic reinforcement materials in sand foundations" Geosynthetics International, Vol.11, pp.35-42. https://doi.org/10.1680/gein.2004.11.1.35
  6. Dash, S. K., Sireesh, S., and Sitharam, T. G. (2003), "Model studies on circular footing supported on geocell reinforced sand underlain by soft clay." Geotextiles and Geomembranes, Vol.21, pp.197-219. https://doi.org/10.1016/S0266-1144(03)00017-7
  7. Emersleben A. (2010), "Load transfer mechanism of geocell for stabilization of granular base layers at static and dynamic loads", PhD-Thesis at Clausthal University of Technology, Department of Geotechnical Engineering, Germany.
  8. Hausemann, M. R. (1976), "Strength of Reinforced Soil", Proceedings of 8th Australian Road Research Conference, Vol.8.
  9. Kazerani, G., and Jamnejad, G. (1987), "Polymer grid cell reinforcement in construction of pavement structures", Geosynthetics '87 Conference, New Orleans, LA, Feb, pp.58-68.
  10. Kief, O., and Rajagopa, K. (2011), "Modulus Improvement Factor for Geocell-Reinforced Bases", Geosynthetics India'11, Chennai, India.
  11. Koerner, R. M. (1986), Designing with Geosynthetics, Prentice Hall, Engelwood.
  12. Mhaiskar, S. Y., and Mandal, J. N. (1992), "Soft Clay Subgrade stabilisation using Geocells. Geotechnical special publications", New York, American Society of Civil Engineers, ASCE, Vol.30, S. 1092-1103.
  13. Mhaiskar, S. Y., and Mandal, J. N. (1996), "Investigations on soft clay subgrade strengthening using geocells". Construction and Building Material Journal 10 Vol.4, 281-286. https://doi.org/10.1016/0950-0618(95)00083-6
  14. Rea, C., and Mitchell, J.K. (1978), "Sand reinforcement using paper grid cells", Proc. Symposium on Earth Reinforcement, Pittsburg, ASCE, 644-663.
  15. Shimizu, M., and Inui, T. (1990), "Increasing in the bearing capacity of ground with geotextile wall frame", Geotextiles, Geomembranes and Related Products, 254.
  16. Shin, E., Kim, S., and Kim. Y. (2009), "Study on Ground Reinforced effect using the porous Geocell", Journal of Korean Geosynthetics Society, Vol. 8, No. 1, pp.33-40.
  17. Tafreshi, M. S. N., and Dawson, A. R. (2010), "Comparison of bearing capacity of a strip footing on sand with geocell and with planar forms of geotextile reinforcement", Geotextiles and Geomembranes, Vol.28, pp.72-84. https://doi.org/10.1016/j.geotexmem.2009.09.003
  18. Tafreshi, M. S. N., and Dawson, A. R. (2012), "A comparison of static and cycle loading responses of foundastions on geocell-reinforced sand", Geotextiles and Geomembranes, Vol.32, pp.55-68. https://doi.org/10.1016/j.geotexmem.2011.12.003
  19. Thakur, J. K., Han, J., and Parsons, R. L. (2012a), "Creep behavior of geocell-reinforced recycled asphalt pavement (RAP) bases", ASCE Journal of Geotechnical Engineering, Vol.117, No.10, pp.753-772.
  20. Thakur, J. K., Han, J., Pokharel, S. K., and Parsons, R. L. (2012b), "A large test box study on geocell-reinforced recycled asphalt pavement (RAP) bases over weak subgrade under cyclic loading", GeoCongress 2012, Oakland, California, USA, March 25-29, State of the Art and Practice in Geotechnical Engineering, Geotechnical Special Publication, No. 225.
  21. Yang, X., Han, J., Pokharel, S. K., Manadhar, C., Parsons, R. L., Leshchinsky, D., and Halahmi, I. (2012), "Accelerated pavement testing of unpaved roads with geocell-reinforced sand bases", Geotextiles and Geomembranes, Vol.32, pp.95-103. https://doi.org/10.1016/j.geotexmem.2011.10.004
  22. Yoon, S., Kim, J., Chung, M., Kim, Y., and Cho, S. (2002), "Reinforcing Effect of Geocell on Soft soil Subgrade for high-speed railroad", Journal of the Korean geotechnical society, Vol.18, No.2, pp.5-12.