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dc.contributor.author
Pimentel, Erich
dc.contributor.author
Anagnostou, Georg
dc.contributor.editor
Peila, Daniele
dc.contributor.editor
Viggiani, Giulia
dc.contributor.editor
Celestino, Tarcisio
dc.date.accessioned
2019-05-13T09:53:57Z
dc.date.available
2019-05-13T09:30:06Z
dc.date.available
2019-05-13T09:53:57Z
dc.date.issued
2019-04-24
dc.identifier.isbn
978-1-138-38865-9
en_US
dc.identifier.isbn
978-0-429-42444-1
en_US
dc.identifier.issn
2639-7749
dc.identifier.issn
2639-7757
dc.identifier.other
10.1201/9780429424441-157
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/341785
dc.description.abstract
The paper presents the static and thermal design of an artificial ground freezing (AGF) measure with brine for an access tunnel of a railway station in central Switzerland. The geology of the first 45 m of the access tunnel consist of sediments (silty sand to sandy silt) followed by sandstone. The tunnel crosses under the railway lines and train platforms of one of the train stations with the highest traffic. At any time during construction of the tunnel traffic of trains cannot stopped. Due to the sediments aforementioned and since the water table lies slightly above the crown of the tunnel, AGF is the only suitable auxiliary measure for the tunnel. For achieving an adequate frozen body above the crown water table must be raise up by watering the ground locally with drains. The paper presents also the dimensioning and optimization of these drains. The strength parameters were estimated from literature and verified with uniaxial tests with frozen soil samples under constant temperature. Due to project requirements the core of the tunnel is also frozen. Implementation of the AGF measures starts from a shaft. Due to spatial conditions given by the location of reinforcement of the diaphragm wall of the shaft and of a reinforcement beam the distribution of the freeze pipes was demanding. The goals of the thermal design were the generation of a frozen body with uniform thickness around the tunnel and to avoid generation of excess pore pressure in the core of the tunnel during freezing.
en_US
dc.language.iso
en
en_US
dc.publisher
CRC Press
en_US
dc.title
Design of artificial ground freezing for an access tunnel of a railway station in Switzerland
en_US
dc.type
Conference Paper
dc.date.published
2019-04-17
ethz.book.title
Tunnels and Underground Cities. Engineering and Innovation Meet Archaeology, Architecture and Art: Proceedings of the WTC 2019 ITA-AITES World Tunnel Congress
en_US
ethz.journal.title
Proceedings in Earth and Geosciences
ethz.pages.start
1479
en_US
ethz.pages.end
1488
en_US
ethz.version.edition
1st Edition
en_US
ethz.event
45th ITA-AITES General Assembly and World Tunnel Congress (WTC 2019), Naples, Italy, May 3-9, 2019
en_US
ethz.event.location
Naples, Italy
en_US
ethz.event.date
May 3-9, 2019
en_US
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02607 - Institut für Geotechnik / Institute for Geotechnical Engineering::03655 - Anagnostou, Georgios / Anagnostou, Georgios
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02607 - Institut für Geotechnik / Institute for Geotechnical Engineering::03655 - Anagnostou, Georgios / Anagnostou, Georgios
en_US
ethz.date.deposited
2019-05-13T09:30:12Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2019-05-13T09:54:04Z
ethz.rosetta.lastUpdated
2020-02-15T18:59:55Z
ethz.rosetta.versionExported
true
ethz.COinS
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