Investigation and analysis of a river dike damaged during the 2011 East Japan Disaster

H. Hazarika, T. Hara, K. Kuribayashi, S. Kuroda, T. Nishi, H. Furuichi, K. Takezawa, T. Ohsumi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many river dikes and embankments, which were damaged due to strong shaking of the 2011 off the pacific coast of Tohoku earthquake and subsequent tsunami, display diverse damage patterns depending on the topography and the types of structures. This paper analyzes the cause of damage to theYoshihama river dike located in Ofunato city of Iwate prefecture based on past field investigations and numerical simulations. Investigations revealed that the dike body had lowliquefaction resistance and the volume change after liquefaction was rather large. Two dimensional effective stress analyses showed that due to main shock and aftershock, there is a likelihood of liquefaction in dike body and the re-liquefaction possibilities are high even under small ground motion.

Original languageEnglish
Title of host publicationComputer Methods and Recent Advances in Geomechanics - Proc. of the 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
PublisherTaylor and Francis - Balkema
Pages1891-1896
Number of pages6
ISBN (Print)9781138001480
DOIs
Publication statusPublished - 2015
Event14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014 - Kyoto, Japan
Duration: Sep 22 2014Sep 25 2014

Publication series

NameComputer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014

Other

Other14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
CountryJapan
CityKyoto
Period9/22/149/25/14

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Geochemistry and Petrology

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