A predictive model for scour depth of coastal building failures due to tsunamis

Mara Nicholas, Ravindra Jayaratne, Takayuki Suzuki, Tomoya Shibayama

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

Abstract

The 2011 Great East Japan Earthquake and Tsunami was one of the strongest earthquakes which generated a major tsunami in modern history. The tsunami disaster had an estimated cost of 16.9 trillion yen (US 217.3 billion) and affected the Coastal buildings, services, infrastructure and industrial sectors. Approximately 61% of damaged cost was from the building sector. A practical predictive scour depth model at seaward face was developed to highlight the scour failure of Coastal buildings in Miyagi, Fukushima and Iwate prefectures affected by the 2011 Great East Japan Earthquake and Tsunami. The predictive model for representative scour depth was developed in terms of various hydraulic, geometrical and soil properties affecting Coastal buildings. An analysis was undertaken to investigate the effectiveness of the authors' predictive scour model against the existing models. The results of the authors' proposed model suggested that the tsunami velocity played a significant role on tsunami-induced scour, other scour models such as Tonkin et al.'s model (2003) is reliant on the accuracy of sub models and hydrodynamic forces while the Colorado State University model as modified by Nadal et al. (2010) is reliant on the geometric parameter of the structure.

Original languageEnglish
Title of host publicationProceedings of the 35th International Conference on Coastal Engineering, ICCE 2016
EditorsPatrick Lynett
PublisherAmerican Society of Civil Engineers (ASCE)
ISBN (Electronic)9780989661133
Publication statusPublished - 2016 Jan 1
Event35th International Conference on Coastal Engineering, ICCE 2016 - Antalya, Turkey
Duration: 2016 Nov 172016 Nov 20

Publication series

NameProceedings of the Coastal Engineering Conference
Volume35
ISSN (Print)0161-3782

Other

Other35th International Conference on Coastal Engineering, ICCE 2016
CountryTurkey
CityAntalya
Period16/11/1716/11/20

Keywords

  • 2011 Great East Japan Earthquake and Tsunami
  • Coastal buildings
  • Predictive model
  • Representative scour depth.
  • Scour
  • Tsunami-induced

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

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