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Study of the pressure loads on cavities in high-speed railway tunnels

Heine, Daniela and Ehrenfried, Klaus and Kühnelt, Helmut and Lachinger, Stefan and Rudolph, Michael and Vorwagner, Alois and Saliger, Florian (2018) Study of the pressure loads on cavities in high-speed railway tunnels. In: Fourth International Conference on Railway Technology: Research, Development and Maintenance. Fourth International Conference on Railway Technology: Research, Development and Maintenance, 03.-07. Sep. 2018, Sitges, Spanien.

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Official URL: http://www.railwaysconference.com/

Abstract

The tunnel passage of a high-speed train leads to pressure waves inside the tunnel, which can affect the installations inside of the tunnel, as well as the structures of the train and the tunnel in a negative way and may lead to discomfort of the passengers. Modern twin-bore tunnels have small cross-sectional areas, no ballast bed and can be very long, like the recently opened Gotthard-Base-Tunnel. This leads to strong pressure waves, which may steepen over the length of the tunnel. The tubes are interconnected with pressurized crossways, which act as escape way for both tubes. The cross-passage is separated from the tunnel by air-tight doors, whose durability can be decreased due to the loads induced by the pressure waves. At both ends of the cross-cuts, the tunnel's cross-sectional area is enlarged leading to cavities inside the tunnel. Different cavity geometries were studied concerning their influence on the pressure waves. A special attention was paid at the possible decrease of the loads on installations, particularly cross-cut doors, inside of the cavities. A life time assessment was performed for a generic cross passage sliding door. The studies were performed experimentally at the German Aerospace Center Göttingen and numerically at the Austrian Institute of Technology.

Item URL in elib:https://elib.dlr.de/119070/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Verkehr, bodengebundene Fahrzeuge, Teilgebiet 832
Title:Study of the pressure loads on cavities in high-speed railway tunnels
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heine, Danieladaniela.heine (at) dlr.deUNSPECIFIED
Ehrenfried, KlausKlaus.Ehrenfried (at) dlr.deUNSPECIFIED
Kühnelt, HelmutAustrian Institute of Technology GmbH (AIT)UNSPECIFIED
Lachinger, StefanAustrian Institute of Technology GmbH (AIT)UNSPECIFIED
Rudolph, MichaelAustrian Institute of Technology GmbH (AIT)UNSPECIFIED
Vorwagner, AloisAustrian Institute of Technology GmbH (AIT)UNSPECIFIED
Saliger, FlorianÖBB-Infrastruktur AG, Praterstern 3, 1020 Vienna, AustriaUNSPECIFIED
Date:2018
Journal or Publication Title:Fourth International Conference on Railway Technology: Research, Development and Maintenance
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Hochgeschwindigkeitszug, Tunnelaerodynamik, Tunneleinbauten, TSG, CFD, Life Cycle Assessment
Event Title:Fourth International Conference on Railway Technology: Research, Development and Maintenance
Event Location:Sitges, Spanien
Event Type:international Conference
Event Dates:03.-07. Sep. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train III (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Fluid Systems, GO
Deposited By: Bachmann, Barbara
Deposited On:27 Sep 2018 08:21
Last Modified:27 Sep 2018 08:21

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