Debris damming loads and effect in tsunami-like events

Stolle Jacob, Nistor Loan, Takabatake Tomoyuki, Goseberg Nils, Petriu Emil, Shibayama Tomoya

研究成果: Conference contribution

抄録

Debris loading during extreme flooding events has been documented by many post-tsunami field surveys of disaster-stricken communities and, as such, it is now considered and accounted for as a critical design consideration in building resilient infrastructure. Debris damming is one of the debris loads of concern, occurring when solid objects entrained within the inundating flow accumulate at the face of a structure or a structural element. The presence of the debris dam results in increased drag loads on the structure and can have other associated effects, such as flow runup and flow accelerations, that can cause increased scouring at foundations. The focus of debris damming studies has been within river engineering: Therefore, previous studies have been performed in steady-state conditions. The study presented here is the first to examine debris damming in transient, supercritical flow conditions. The study uses a modified dam-break wave as the hydrodynamic forcing condition and the debris are scaled down debris types common in coastal areas (shipping containers, hydro poles, and boards). The study qualitatively examines the difference in the debris damming mechanisms as a result of distinct flow conditions associated with a dam-break wave interacting with a surface-piercing obstacle. Additionally, the study aimed to determine the influence of the debris dam. It was found that maximum loading condition occurred earlier and of greater magnitude than for the clear water case.

本文言語English
ホスト出版物のタイトル6th International Disaster Mitigation Specialty Conference 2018, Held as Part of the Canadian Society for Civil Engineering Annual Conference 2018
編集者Alan Lloyd, Ioan Nistor
出版社Canadian Society for Civil Engineering
ページ70-80
ページ数11
ISBN(電子版)9781510889736
出版ステータスPublished - 2018
イベント6th International Disaster Mitigation Specialty Conference 2018, Held as Part of the Canadian Society for Civil Engineering Annual Conference 2018 - Fredericton, Canada
継続期間: 2018 6 132018 6 16

出版物シリーズ

名前6th International Disaster Mitigation Specialty Conference 2018, Held as Part of the Canadian Society for Civil Engineering Annual Conference 2018

Conference

Conference6th International Disaster Mitigation Specialty Conference 2018, Held as Part of the Canadian Society for Civil Engineering Annual Conference 2018
国/地域Canada
CityFredericton
Period18/6/1318/6/16

ASJC Scopus subject areas

  • 安全性、リスク、信頼性、品質管理
  • 地盤工学および土木地質学

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