Numerical Collapse Analysis of Tsuyagawa Bridge Damaged by Tohoku Tsunami

Hamed Salem, Suzan Mohssen, Yuto Nishikiori, Akira Hosoda

Abstract

In March 2011, the Tohoku tsunami swept over the east coast of Japan killing more than 15,000 people and missing more than 2,500 people. The tsunami resulted in collapsing of more than 400,000 buildings and washing away of more than 250 coastal bridges. In this study, the collapse of Tsuyagawa bridge damaged by the Tohoku tsunami is numerically investigated using the applied element method (AEM) because of its advantages for simulating structural progressive collapse. The AEM is a discrete crack approach that allows the elements separation, fall, and collision with each other in a fully nonlinear dynamic scheme of computations. The analysis was demonstrated to efficiently simulate the bridge collapse, showing that the bridge collapsed at a water speed of 6.6 m/s initiated by flexural failure of its piers. The study of bridge strengthening showed that the collapse water speed could be increased by 22 and 29% compared to Tohoku tsunami if piers are strengthened by a 100-mm RC jacket and 20-mm thick steel jacket, respectively.

Original languageEnglish
Article number04016065
JournalJournal of Performance of Constructed Facilities
Volume30
Issue number6
DOIs
StatePublished - 2016 Dec 1

Fingerprint

Tsunamis
Water
Bridge piers
Piers
Washing
Coastal zones
Numerical analysis
Cracks
Steel

Keywords

  • Applied element method (AEM)
  • Bearings
  • Hydrodynamic forces
  • Progressive collapse
  • RC piers
  • Tsunami

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Safety, Risk, Reliability and Quality

Cite this

Numerical Collapse Analysis of Tsuyagawa Bridge Damaged by Tohoku Tsunami. / Salem, Hamed; Mohssen, Suzan; Nishikiori, Yuto; Hosoda, Akira.

In: Journal of Performance of Constructed Facilities, Vol. 30, No. 6, 04016065, 01.12.2016.

Research output: Contribution to journalArticle

Salem, Hamed; Mohssen, Suzan; Nishikiori, Yuto; Hosoda, Akira / Numerical Collapse Analysis of Tsuyagawa Bridge Damaged by Tohoku Tsunami.

In: Journal of Performance of Constructed Facilities, Vol. 30, No. 6, 04016065, 01.12.2016.

Research output: Contribution to journalArticle

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