Analysis of the Relationship between Concrete Slab Track Life and Secondary Compression Characteristics in Soft Clay

점토의 2차 압축특성과 콘크리트궤도 수명과의 상관성 분석

  • Lee, Sang-Cheol (Civil Engineering Division, Halla Engineering & Construction Corp., Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Cho, Kook-Hwan (Dept. of Railway Construction Engineering, Graduate School of Railway, Seoul National University of Science & Technology)
  • Received : 2016.03.09
  • Accepted : 2016.04.07
  • Published : 2016.04.30


Concrete slab track was applied to the Gyeoungbu High Speed Railroad step 2 and the Honam High Speed Railroad. Concrete slab track incurs higher construction cost and lower maintenance cost than existing gravel track. For these reasons, the use of concrete slab track has increased in Korea. The biggest problem in the use of concrete slab track is repairing damage from settlement that can occur while trains are in service. High speed railroad design standards require allowable residual settlement of concrete slab track of less than 25mm. In order to satisfy the requirement of long term stability of concrete slab track, it is necessary to manage the secondary compression settlement within the allowable residual settlement. This study is to evaluate the secondary compression settlement with the variation of the secondary compression index, thickness of soft ground, and concrete slab track life. Statistical analysis is performed to determine the probability of distribution of areas where serious problems will be caused after the concrete slab track is constructed.


Supported by : 국토교통과학기술진흥원


  1. Korea Rail Network Authority (2013) The Railway Design Criteria(Subbase Volume), Korea Rail Network Authority.
  2. K. Terzaghi (1948) Theoretical Soil Mechanics, John Wiley, New York.
  3. C.C. Ladd, R. Foott, K. Ishihara, F. Schosser, H.J. Poulos (1977) Stress-deformation and strength characteristics, Proc. 9th ICSMFE, Tokyo 2. State of the Art Report, pp. 421-494.
  4. H. Aboshi, H. Matsuda (1981) Secondary compression of clays and its effect on settlement analysis, Soils and Foundations, Vol. 29, pp. 19-24.
  5. G. Mesri, P.M. Godlewski (1977) Time and stress compressibility interrelationship, Journal of Goetech. Eng. Div., ASCE Vol. 103, No. GT5, pp. 417-430.
  6. G. Mesri, A. Castro (1987) The Ca/Cc concept and Ko during secondary compression, Journal of Goetech. Eng. Div., ASCE Vol. 113, No.GT3, pp. 230-247.
  7. M. Kabbaj, F. Tavenas, S. Leroueil (1988) In situ and laboratory stress-strain relationship, Goetechnique 38, No. 1, pp. 83-100.
  8. H.J. Kim, M.S. Lee, Y.J. Lee, D.W. Kim (2004) A new proposed technique for a secondary consolidation coefficient based on the constant rate of strain test, Journal of Korean Geotechnical Society, Korean Geotechnical Society, 20(8), pp. 113-121.