Multi-Scale Bridge Wash Out Simulation During Tsunami by Using a Particle Method

In 2011, the huge tsunami caused by the great east Japan earthquake devastated many infrastructures in pacific coast of north eastern Japan. Particularly, collapse of bridges caused a traffic disorder and these collapse behaviors led to delay of recovery after the disaster. In this study, the bridge...

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Bibliographic Details
Published inMATEC Web of Conferences Vol. 47; p. 2019
Main Authors Miyagawa, Yoshiya, Asai, Mitsuteru
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2016
Subjects
Bridge failure
Collapse
Computational fluid dynamics
Computer simulation
Earthquakes
Finite element method
Fluid flow
Girder bridges
Meshless methods
Motion simulation
Multiscale analysis
Numerical analysis
Rigid-body dynamics
Simulation
Smooth particle hydrodynamics
Traffic delay
Tsunamis
Japan
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Summary:In 2011, the huge tsunami caused by the great east Japan earthquake devastated many infrastructures in pacific coast of north eastern Japan. Particularly, collapse of bridges caused a traffic disorder and these collapse behaviors led to delay of recovery after the disaster. In this study, the bridge wash away accident is selected as a target issue, and it is represented by a numerical simulation. For this purpose, Smoothed Particle Hydrodynamics (SPH) Method, which is one of the pure mesh free methods, is utilized for the rigid body motion simulation. In this study, rigid body motion is introduced for the fluid-rigid interaction behavior during bridge wash away simulation. In the numerical analysis, the upper bridge structure is washed away by receiving an impact fluid force. The wash away simulation of two types of the bridge girder showed good agreement with the real accident on the great east Japan earthquake tsunami.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/20164702019