Computational & Technology Resources
an online resource for computational,
engineering & technology publications
Civil-Comp Proceedings
ISSN 1759-3433
CCP: 104
PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Edited by: J. Pombo
Paper 128

Computing Stress Cycles in Subsoils for Concrete Slab Tracks subject to High-Speed Trains

E. Nsabimana and Y.H. Jung

Department of Civil Engineering, Kyung Hee University, Yongin, Republic of Korea

Full Bibliographic Reference for this paper
E. Nsabimana, Y.H. Jung, "Computing Stress Cycles in Subsoils for Concrete Slab Tracks subject to High-Speed Trains", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 128, 2014. doi:10.4203/ccp.104.128
Keywords: high speed lines, subgrade, dynamic, finite element, ground vibrations.

Summary
This paper describes the dynamic behavior of the subgrade layer in a concrete slab track of a high speed line. The main focus is on the ground vibrations generated by high speed trains, how these vibrations may be linked to the deflection of the track, the stress paths, and the stress-strain behaviour experienced by the subgrade in which large strains are induced, and how these strains influence the track response in a nonlinear manner. A finite element model is prepared to simulate the two dimensional slab track system dynamically in the time domain. Numerical results emphasize the limitations of the linear model for the large dynamic strains in the subgrade over the large elastic stresses produced. Based on the dynamic effects found in this study, some considerations for taking into account the nonlinear behavior in the soil are suggested.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £65 +P&P)