Supplied Sediment Tracking for Bridge Collapse with Large-Scale Channel Migration

Inoue, Takuya; Mishra, Jagriti; Kato, Kazuo et al.

Water, 2020, 12(7), 1881

Permalink : https://hdl.handle.net/2115/79245

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https://doi.org/10.3390/w12071881     45

論文情報

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アクセス権
open access
URI
https://hdl.handle.net/2115/79245
タイトル
Supplied Sediment Tracking for Bridge Collapse with Large-Scale Channel Migration
著者
Inoue, Takuya ; Mishra, Jagriti ; Kato, Kazuo ; Sumner, Tamaki ; Shimizu, Yasuyuki
著者名
Inoue, Takuya
著者名
Mishra, Jagriti
著者名
Kato, Kazuo
著者名
Sumner, Tamaki
e-Rad_Researcher
20261331
著者名
Shimizu, Yasuyuki
言語
英語
キーワード
bridge collapse
abutment
channel migration
bank erosion
meander
bars
sediment supply
tracer
発行日
2020-07
出版者
MDPI
収録物名
Water
巻(号)
12(7)
ページ
1881
抄録
Here, we provide a numerical model that assigns an identification number to trace sediments and also identify the source of sediment supply. We analyze the efficacy of our model by reproducing the reach-scale field observations from flooding events in 2010 and 2016 that affected Kyusen Bridge over the Bebetsu River, Hokkaido, Japan. Our simulation results can successfully reproduce and trace the formation of bars caused by sediment supply in the study region. Our study also suggests a strong relationship between bank erosion rate, sediment supply and flow-discharge. The bank erosion rate is higher when sediment supply increases, and bank erosion reduces as flow discharge goes down. The model can also replicate the changes in a bed concerning sediment supply and was used to reproduce the bridge-abutment failure caused by the 2016 flooding with large sediment supply and the bridge-pier failure caused by the 2010 flooding with less sediment supply.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
Creative Commons Attribution 4.0 International
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.3390/w12071881