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Load Carrying Capacity of Geosynthetic Reinforced Railway Subgrade Under Cyclic Load

토목섬유 보강재로 보강된 철도 노반의 반복하중 하중지지력 연구

SeungRok Hong1
,
Yungyu Cho2
,
JungHyuk Choi3
,
Yongjun Jeong4
,
ChungSik Yoo5*
홍 승록1
,
조 윤규2
,
최 정혁3
,
정 용준4
,
유 충식5*
1Graduate Student, Dept of Mega Building and Bridge, Sungkyunkwan Univ.
2Graduate Student, Dept. of Global Construction Engineering, Sungkyunkwan Univ.
3Graduate Student. Dept. of Civil & Envir. Engineering, Sungkyunkwan Univ.
4Graduate Student, Dept. of Global Construction Engineering, Sungkyunkwan Univ.
5 Professor, Dept. of Civil Engrg, Sungkyunkwan Univ.
*교신저자. *Corresponding Author. 
30 December 2013. pp. 109-121
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Abstract

This paper studied the characteristics of bearing capacity of railway reinforced with geosynthetic against repetitive loading of train. The railway that was based on the porous pavement substructure ground and reinforced with geosynthetic was copied. In order to analyze load carrying capacity of geosynthetic, we have had 3cases experiments - in the first case, the ground was non reinforced, second case was reinforced geocell and last case was reinforced geogrid - and all of them were reduced-scale laboratory tests. The results of the analyses indicated that the bearing capacity of the reinforced geogrid increases much more than the reinforced geocell. Residual deformation of the initial cyclic loadwas larger than the secondary cyclic loads.

Keywords
Reinforced geocell
Reinforced geogrid
Cyclic loading
Reduced-scale laboratory tests
Bearing capacity

본 논문에서는 고속철도의 반복하중에 의한 토목섬유로 보강된 철도노반의 지지력 특성을 다루었다. 토목섬유로 보강된 철도 노반은 투수성 포장 하부구조의 지반에 지오셀 및 지오그리드 보강을 하여 모사하였다. 포장구조체의 하중지지력 증가효과를 고찰하기 위하여 무보강상태의 지반과 지오셀 보강의 경우, 3층 지오그리드 보강인 경우에 대하여 총 3가지 실험 케이스의 실내 축소모형실험을 진행하였으며 잔류변형량은 초기 동적하중이 작용하는 경우가 2차 동적하중 작용시 보다 크게 나타났다. 지오셀 보강보다 3층 지오그리드 보강된 포장 하부구조에서 더 큰 지지력이 발현 되는 것으로 나타났다.

References
1
1.Dash, S. K., Krishnaswamy, N. R., and Rajagopal, K. (2001), “Bearing capacity of strip footings supported on geocell- reinforced sand.” Geotextiles and Geomembranes, Vol.19, pp.235-256.
2
2.Dash, S. K., Rajagopal, K., and Krishnaswamy, N. R. (2001), “Strip footing on geocell reinforced sand beds with additional planar reinforcement” Geotextiles and Geomembranes, Vol.19, pp.529-538.
3
3.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.
4
4.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.
5
5.Dash, S. K. (2012), “Effect of Geocell Type on Load-Carrying Mechanisms of Geocell-Reinforced Sand Foundations”, Inter-national Journal of Geomechanics, Vol.12, pp.537-548.
6
6.Gobel, C. H. and Weisemann, C. (1994) “Effectiveness of a reinforcing geogrid in a railway subbase under dynamic loads”, Geotextiles and Geomembranes, Vol.13, pp.91-99.
7
7.Indraratna, B., Hussaini K. K. S., and Vinod, J. S. (2013), “The lateral displacement response of grogrid-reinforced ballast under cycling loading”, Geotextiles and Geomembranes, Vol.39, pp.20-29.
8
8.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.
9
9.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.
10
10.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.
11
11.Rea, C., and Mitchell, J.K. (1978), “Sand reinforcement using paper grid cells”, Proc. Symposium on Earth Reinforcement, Pittsburg, ASCE, 644-663.
12
12.Shimizu, M., and Inui, T. (1990), “Increasing in the bearing capacity of ground with geotextile wall frame”, Geotextiles, Geomembranes and Related Products, 254.
13
13.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.
14
14.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.
15
15.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.
16
16.Tanchaisawat, T., Bergado, D. T., Voottipruex, P., and Shehzad, K. (2010), “Interaction between geogrid reinforcement and tire chip-sand lightweight backfill”, Geotextiles and Geomem-branes, Vol.28, pp.119-127.
17
17.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.
18
18.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.
19
19.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.
20
20.Yoo, C.　S., Kim, S. B., Kim, Y. H. and Han, D. H/ (2007), “Time-dependent Deformation Characteristics of Geosynthetic Reinforced Modular Block Walls under Sustained/Cyclic Loading”, Journal of the Korean geotechnical society, Vol.23, No.6, pp.5-21.
21
21.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.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 12
  • No :4
  • Pages :109-121
  • Received Date : 2013-12-06
  • Revised Date : 2013-12-24
  • Accepted Date : 2013-12-24
  • DOI :https://doi.org/10.12814/jkgss.2013.12.4.109
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