A Study on the Tenacity of Coastal Dikes Constructed by Clay and Lean Cement Mixed Soil against Tsunami Overflow

Takahide Honda, Yukinobu Oda, Kazunori Ito, Hiroyasu Ishii, Tomoyuki Takabatake

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

Abstract

The tsunami generated by the 2011 off the Pacific Coast of Tohoku earthquake caused massive damage to coastal dikes. In order to protect human lives and properties from tsunami, the tenacity of coastal dikes should be improved to secure sufficient time for evacuating residence. In this study, clay or lean cement mixed soil are used for embankment materials. The embankment materials of coastal dikes that can enhance its tenacity are investigated by means of both laboratory experiments and numerical simulations. It was cleared quantitatively from laboratory experiments that tenacity of coastal dikes was improved by using clay or cement mixed sand for embankment materials. In addition, the results from numerical simulations show that the coupled fluid-sediment interaction model considering clay cohesion has possibilities of evaluating the tenacity of coastal dikes composed of clay mixed sand.

Original languageEnglish
Title of host publicationCoastal Structures and Solutions to Coastal Disasters 2015
Subtitle of host publicationTsunamis - Proceedings of the Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015
PublisherAmerican Society of Civil Engineers (ASCE)
Pages118-127
Number of pages10
ISBN (Electronic)9780784480311
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes
EventCoastal Structures and Solutions to Coastal Disasters Joint Conference 2015 - Boston, United States
Duration: 2015 Sep 92015 Sep 11

Other

OtherCoastal Structures and Solutions to Coastal Disasters Joint Conference 2015
CountryUnited States
CityBoston
Period15/9/915/9/11

ASJC Scopus subject areas

  • Ocean Engineering
  • Civil and Structural Engineering
  • Modelling and Simulation

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    Honda, T., Oda, Y., Ito, K., Ishii, H., & Takabatake, T. (2015). A Study on the Tenacity of Coastal Dikes Constructed by Clay and Lean Cement Mixed Soil against Tsunami Overflow. In Coastal Structures and Solutions to Coastal Disasters 2015: Tsunamis - Proceedings of the Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015 (pp. 118-127). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784480311.012