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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.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	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 doi:10.4203/ccp.104.128 purchase the full-text of this paper 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)
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