Show simple item record

dc.contributor.author
Sakellariadis, Lampros
dc.contributor.author
Anastasopoulos, Ioannis
dc.contributor.author
Gazetas, George
dc.date.accessioned
2021-01-08T16:19:56Z
dc.date.available
2020-11-11T12:44:05Z
dc.date.available
2020-11-11T14:37:22Z
dc.date.available
2021-01-08T16:19:56Z
dc.date.issued
2020-12
dc.identifier.issn
0038-0806
dc.identifier.other
10.1016/j.sandf.2020.09.005
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/450811
dc.identifier.doi
10.3929/ethz-b-000450811
dc.description.abstract
The paper revisits the notorious collapse of 18 spans of the elevated Route No. 3 of Hanshin Expressway during the 1995 Kobe earthquake. The overturned deck was monolithically connected to 3.1 m diameter piers, which failed dramatically. In stark contrast, the massive 17–pile groups survived the earthquake and are still in use, supporting the new bridge. The scope of the study is dual. Initially, the actual pile group–bridge–soil system is investigated employing the finite element (FE) method, accounting for material and geometric nonlinearities. Reinforced concrete (RC) members (pier and piles) are modelled using the Concrete Damaged Plasticity (CDP) model, while a kinematic hardening model is employed for the soil. The numerical simulation reproduces the observed shear-dominated failure at the region of reinforcement cut-off. The analysis reveals that the pile group sustains non-negligible rocking during shaking (despite being over-designed), leading to alternating tension and compression of the edge piles, combined with shear-moment loading. The resulting stiffness reduction of the cracked under tension piles leads to load redistribution towards the stiffer compressed piles, preventing plastic hinging of the weaker piles (under tension). These findings are consistent with post-earthquake in-situ testing, qualitatively verifying the numerical analysis technique. Subsequently, alternative foundation concepts are explored, starting with the pilecap of the original configuration acting as a shallow footing, provoking nonlinear rocking response. It is shown that soil yielding acts as a “fuse”, preventing collapse at the cost of increased settlements and limited residual foundation rotation. The benefits and limitations of such a shift towards nonlinear soil–foundation response are further explored, studying four intermediate foundation schemes.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Kobe earthquake
en_US
dc.subject
Bridge collapse
en_US
dc.subject
Nonlinear analysis
en_US
dc.subject
Soil-structure interaction
en_US
dc.title
Fukae bridge collapse (Kobe 1995) revisited: New insights
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2020-11-06
ethz.journal.title
Soils and Foundations
ethz.journal.volume
60
en_US
ethz.journal.issue
6
en_US
ethz.journal.abbreviated
Soil found.
ethz.pages.start
1450
en_US
ethz.pages.end
1467
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Amsterdam
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
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::09569 - Anastasopoulos, Ioannis / Anastasopoulos, Ioannis
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::09569 - Anastasopoulos, Ioannis / Anastasopoulos, Ioannis
ethz.date.deposited
2020-11-11T12:44:13Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-01-08T16:20:06Z
ethz.rosetta.lastUpdated
2021-02-15T23:02:37Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Fukae%20bridge%20collapse%20(Kobe%201995)%20revisited:%20New%20insights&rft.jtitle=Soils%20and%20Foundations&rft.date=2020-12&rft.volume=60&rft.issue=6&rft.spage=1450&rft.epage=1467&rft.issn=0038-0806&rft.au=Sakellariadis,%20Lampros&Anastasopoulos,%20Ioannis&Gazetas,%20George&rft.genre=article&rft_id=info:doi/10.1016/j.sandf.2020.09.005&
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record