Computational Technology Resources - CCC

G. Ferreira, P.A. Montenegro, A.A. Henriques, R. Calçada, "New Perspectives on Running Safety in Ballastless Railway Bridges", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 15.8, 2024, doi:10.4203/ccc.7.15.8

Keywords: ballastless railway bridges, derailment, running safety, deck acceleration, Eurocodes, high-speed railways.

Abstract

Running safety on ballastless bridges is conditioned by the Eurocode EN 1990 A2 on a limit for vertical acceleration. Although it seems this limit is indicative of avoiding the loss of wheel-rail contact, it is unclear whether such accelerations correspond to derailment situations. This communication presents a parametric study of five single-span slab track bridges with varying levels of track quality. Using the High-Speed Load Model A of the EN 1991-2 and a three-dimensional train-track-bridge-interaction approach, deck acceleration and derailment criteria (Nadal and Unloading) are calculated. The results indicate a poor correlation between acceleration and the criteria. It is concluded that track quality is the conditioning factor.

download the full-text of this paper (PDF, 10 pages, 862 Kb)

go to the previous paper
go to the next paper
return to the table of contents
return to the volume description

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 15.8 New Perspectives on Running Safety in Ballastless Railway Bridges G. Ferreira, P.A. Montenegro, A.A. Henriques and R. Calçada CONSTRUCT-LESE, Faculty of Engineering, University of Porto, Portugal doi:10.4203/ccc.7.15.8 Full Bibliographic Reference for this paper G. Ferreira, P.A. Montenegro, A.A. Henriques, R. Calçada, "New Perspectives on Running Safety in Ballastless Railway Bridges", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 15.8, 2024, doi:10.4203/ccc.7.15.8 Keywords: ballastless railway bridges, derailment, running safety, deck acceleration, Eurocodes, high-speed railways. Abstract Running safety on ballastless bridges is conditioned by the Eurocode EN 1990 A2 on a limit for vertical acceleration. Although it seems this limit is indicative of avoiding the loss of wheel-rail contact, it is unclear whether such accelerations correspond to derailment situations. This communication presents a parametric study of five single-span slab track bridges with varying levels of track quality. Using the High-Speed Load Model A of the EN 1991-2 and a three-dimensional train-track-bridge-interaction approach, deck acceleration and derailment criteria (Nadal and Unloading) are calculated. The results indicate a poor correlation between acceleration and the criteria. It is concluded that track quality is the conditioning factor. download the full-text of this paper (PDF, 10 pages, 862 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
Back to top	©Civil-Comp Limited 2023 - terms & conditions