Static Behavior of Reinforced Railway Roadbed by Geotextile Bag

지오텍스타일 백으로 보강된 철도노반의 정적거동 분석

  • Published : 2006.04.01


In this study, a large-scale laboratory model test, 2-D and 3-D numerical analyses were conducted to verify the reinforcement effect by utilizing geotextile bag on the railway roadbed. Static loading which simulated train load was applied on the geotextile bag-reinforced railway roadbed and also unreinforced railway roadbed, Computer program named Pentagon which is a part of FEM programs was used in the numerical analysis. Based on the results of laboratory test, 2-D and 3-D numerical analyses, the effect of load distribution and settlement reduction was found to be depending on the geotextile characteristics, tensile strength of geotextite, and interface friction angle between geotextile bags. In general, the result of 2-D and 3-D numerical analyses shows lower value than that of laboratory test. Also, the result of 3-D numerical analyses shows lower value than that of 2-D numerical analyses because of its stress transfer effect.


  1. Hunt, R. E. (1984), 'Geotechnical Engineering Investigation Manual', McGRAW-HILL, pp.198-203
  2. Annual Book of ASTM Standards(2002), Geosynthetics
  3. Selig, E. T. and Waters, J. M. (1994), Track Geotechnology and Substructure Management, Thomas Telford
  4. Esveld, C. (2001), Modern Railway Track 2nd edition, MRT-Productio
  5. Koerner, R.M (1997), Designing With Geosynthetics, pp.113-115, pp.436-449
  6. Heibaum, M. H. (1999), 'Coastal Scour Stabilization Using Granular Filter in Geosynthetic Non-woven Containers', Geotextile and Geomembrane, Vol.17, pp.341-352
  7. 한국철도기술연구원 (2003), '강우로 인해 유실된 선로복구를 위한 토목섬유 콘테이너의 실용화 기술개발', 산・학・연 공동연구최종보고서, pp.46-92, 145-176
  8. 한국토목섬유학회지 (2004), '토목섬유를 이용한 철도 연약노반보강기술', Vol.3, No.3, pp.16-19