Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
권호 표지
DOI QR코드

DOI QR Code

Development of Design Method for Reinforced Roadbed Considering Plastic Settlement for High-speed Railway

고속철도에서의 소성침하를 고려한 강화노반 설계기법 개발

  • 최찬용 (한국철도기술연구원 고속철도인프라연구단 TFT) ;
  • 최원일 (한국철도시설공단 KR 연구원) ;
  • 한상재 ((주)지구환경전문가그룹) ;
  • 정재현 ((주)지구환경전문가그룹)
  • Received : 2013.05.14
  • Accepted : 2013.08.21
  • Published : 2013.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

An alternative design method of existing methods based on elastic theory the design method of roadbed considering plastic deformation of roadbed and stress-strain at roadbed materials with the cyclic loading of trains passing. The characteristics of the developed design method considering traffic load, number of cyclic loading and resilience modulus of roadbed materials can evaluate elastic strain as well as plastic settlement with allowable design criteria. The proposed design method is applied to standard roadbed section drawing of HONAM high-speed railway considering design conditions such as allowable elastic and plastic settlement, train speed, the tonnage of trains. As a result, required levels of resilience modulus model parameter ($A_E$), unconfined compressive strength, types of soil material were evaluated.

본 설계법은 기존 탄성이론에 근거한 강화노반 설계방법의 대안으로 노반의 소성침하와 열차 반복하중에 따른 응력-변형 특성을 고려한 노반 설계 방법이다. 특징은 설계자가 요구하는 허용설계기준에 따라 교통하중과 열차 년간 통과톤수에 따라 노반의 탄성변위 뿐만 아니라 소성침하량을 평가할 수 있다. 본 설계법을 이용하여 허용 탄성 및 소성 침하량, 열차 속도 및 총통과톤수등의 설계조건을 고려하여 호남고속철도 표준노반단면에 적용하였다. 그 결과 노반의 회복탄성계수 모델인자($A_E$), 일축압축강도, 흙 재료 종류 등의 요구수준 등을 평가할 수 있다.

Keywords

References

  1. Kim, D.S., Lee, S.H., Choi, C.Y., and Hwang, S.K. (2005), "Study on the Reinforcing Subgrade Depths of High speed and Conventional Railroads", Journal of the Korean Society for Railway, Vol.8, No.2, pp.128-136.
  2. Yoo, C.H., Choi, C.Y., and Kim, D.S. (2007), "Determination Method of Reinforced Roadbed Thickness based on Design Chart", 2007 Autumn Conference of the Korean Society for Railway, pp. 1273-1279.
  3. Radampola, S.S. (2006), "Evaluation and Modelling Performance of Capping Layer in Rail Track Substructure", Ph.D. Dissertation, Central Queensland University, Queensland, Austalia.
  4. Li, D. (1994) "Railway Track Granular Layer Thickness Design Based on Subgrade Performance under Repeated Loading", Ph.D. Dissertation, University of Massachusetts, Amherst.
  5. Momoya, Y. and Sekine, E. (2004), "Reinforced Roadbed Deformation Characteristics Under Moving Wheel Loads", QR of RTRI, Vol.45, No.3, pp.162-168. https://doi.org/10.2219/rtriqr.45.162
  6. Momoya, S., Sekine, E., and Tatsuoka, F. (2005), "Deformation characteristics of Railway Roadbed and Subgrade under Moving Wheel Load", Japanese Geotechnical Society (JGS), Soil and Foundations, Vol.45, No.4, pp.99-118. https://doi.org/10.3208/sandf.45.4_99
  7. May, R.W. and Witczak, M.W. (1981), "Effective Granular Modulus to Model Pavement Responses", Transportation Research Record 810, TRB, National Research Council, Washington, D.C., pp.1-9.
  8. Darendeli, B. M. (2001), "Develope of A New Family of Normalize Modulus Reduction and Material Damping Curves", Ph. D. Dissertation, Univ. of Texas at Austin, Tex.
  9. Kim, D.S., Seo, W.S., and Kweon, G.C. (2005), "Evaluation of Field Nonlinear Modulus of Subgrade Soils Using Repetive Static Plaste Bearing Load Test", Journal of the Korean Geotechnical Society, Vol.21 No.2, pp.67-79.
  10. Park, C.S. (2009), "Evaluation of Resilient Modulus and Quality Control Procedure for Railroad Trackbeds Based on Dynamic Properties", Ph. D. Dissertation, Kung Hee Univ.
  11. Choi, C.Y., Mok, Y.J., and Shin, E.C. (2008), "A Study of Design Standards and Technology to Estimate Optimum Thickness of Earth Roadbeds", Korea Railroad Research Institute.
  12. Barksdale, R.D. (1972), "Laboratory evaluation of rutting in basecourse materials", Proceedings 3rd International Conference on structure of Asphalt Pavements, pp.161-174.
  13. Wood, D. M. (1982), "Laboratory Investigation of the Behavior of soils under Cyclic loading: A review", In Soil Mechanics, Transient and Cyclic Loads, John Wiley and Sons Inc. New York, pp.513-582.
  14. Selig, E.T. and Li, D. (1996), "Cumlative plastic deformation for fine-grained subgrade soils", Journal of Geotechnical Engineering, ASCE, Vol.122, No.12, pp.1006-1013. https://doi.org/10.1061/(ASCE)0733-9410(1996)122:12(1006)
  15. Menq, F. Y. (2003), "Dynamic Properties of Sandy and Gravelly soils", Ph. D. Dissertation Univ. of Texas at Austin.
  16. Choi, C.Y. (2009), "Development of the Integrated Automation Software Development of Railroad Roadbed FEM Analysis & Design", Railroad track and structure, No.209, pp.41-47.

Cited by

  1. 고속철도 콘크리트 궤도상 토공노반의 장기거동 특성 연구 vol.19, pp.4, 2013, https://doi.org/10.5762/kais.2018.19.4.8