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New mitigation method for pipeline uplift during seismic event
Department of Civil Engineering, ETH Zurich, Zurich, Switzerland.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0003-1935-1743
Department of Civil Engineering, University of Tokyo, Tokyo, Japan.
Department of Civil Engineering, University of Tokyo, Tokyo, Japan.
2016 (English)In: Geotechnical Research, E-ISSN 2052-6156, Vol. 3, no 2, p. 54-64Article in journal (Refereed) Published
Abstract [en]

The Tohoku earthquake in 2011 caused several damages to the pipeline network in the Tokyo Bay area. Predominantly, the main damages were noticed in the artificial islands, where liquefaction destroyed and deformed numerous embedded pipelines. During a seismic event, lifeline systems are subjected to buoyancy forces in the liquefied soil, causing permanent deformations to pipelines and interrupting their serviceability. The current mitigation methods (backfill improvement) are not suitable for regions prone to future earthquakes because pipe excavation and improvement is time-consuming and costly. Therefore, the aim of this study is to present a new effective mitigation method: the so-called horn-type structure. This innovative mitigation method was analysed with different analytical, experimental and numerical methods.

Place, publisher, year, edition, pages
ICE Virtual Library , 2016. Vol. 3, no 2, p. 54-64
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-67575DOI: 10.1680/jgere.16.00002Scopus ID: 2-s2.0-85040965903OAI: oai:DiVA.org:ltu-67575DiVA, id: diva2:1181587
Available from: 2018-02-09 Created: 2018-02-09 Last updated: 2018-02-09Bibliographically approved

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