SIMULATION ON TSUNAMI-INDUCED TOPOGRAPHIC CHANGE USING SEDIMENT TRANSPORT FORMULA WITH DYNAMIC EFFECTIVE STRESS INSIDE SAND BED

NAKAMURA Tomoaki, MIZUTANI Norimi

doi:10.2208/prooe.24.57

Bibliographic Information

Other Title

地盤内部の応力変動の影響を考慮した漂砂量式を用いた遡上津波による地形変化シミュレーション

Description

A sediment transport formula coupled with dynamic effective stress inside a sand bed was proposed and incorporated into an existing topographic change model so that local scour could be reproduced under severe wave action such as run-up tsunamis, and topographic change simulation on tsunami-induced local scour around a square structure was performed to verify the applicability of the proposed model. Compared with hydraulic model experiments, the present model improved the computational accuracy of not only the initial stage of local scour at the seaward corner of the structure but also the maximum depth of a scour hole after tsunami wave action; hence, the present model was very useful in predicting deposition and erosion patterns under a strong influence of effective stress inside a sand bed.

Journal

PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN

PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN 24 57-62, 2008

Japan Society of Civil Engineers

Keywords

Details 詳細情報について

CRID: 1390001205203641088

NII Article ID: 130003950793

DOI: 10.2208/prooe.24.57

ISSN: 18848265; 09127348

Text Lang: ja

Data Source

JaLC
Crossref
CiNii Articles
KAKEN

Abstract License Flag: Disallowed

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