Erosion mechanism by the 2011 tsunami and the effective countermeasure

• Project/Area Number: 26289158
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Hydraulic engineering
• Research Institution: Tohoku University
• Principal Investigator: MANO Akira 東北大学, 災害科学国際研究所, 名誉教授 (50111258)
• Co-Investigator(Kenkyū-buntansha): 呉 修一 東北大学, 災害科学国際研究所, 助教 (00646995) ; 有働 恵子 東北大学, 災害科学国際研究所, 准教授 (80371780)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000); Fiscal Year 2016: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2014: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
• Keywords: 間隙水圧 / 有限体積法 / 准３次元モデル / 浅水モデル / 空気圧縮係数 / 水圧縮係数 / 津波波力 / 津波 / 侵食 / 構造物 / 液状化 / 局所洗掘 / 侵食メカニズム / 堆積構造

Outline of Final Research Achievements

Destructive and wide spanning erosions by tsunamis and storm surge often obstruction for rebuild. The reconstruction requires breaking mechanism to build robust structures. This study accounts two measure mechanisms, bottom shear stress and liquefaction, and find robust structures.

Research Products

• [Journal Article] 植生のある高レイノルズ数流れにおけるk-εモデルの提案 (2017)
  • Author(s): 平田吉成，呉修一，有働恵子，真野明
  • Journal Title: 東北地域災害科学研究 Volume: 53 Pages: 89-94
  • Acknowledgement Compliant
• [Journal Article] Prediction of the 2011 Tohoku Tsunami Scouring near Structures (2016)
  • Author(s): Tatsuki Iida, Shuichi Kure, Keiko Udo, Akira Mano and Hitoshi Tanaka
  • Journal Title: Journal of Coastal Research Volume: SI 75 Issue: sp1 Pages: 872-876
  • DOI: 10.2112/si75-175.1
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 液状化を考慮した津波の戻り流れによる構造物周辺の洗掘メカニズム (2015)
  • Author(s): 飯田立樹、呉修一、有働恵子、真野明、田中仁
  • Journal Title: 土木学会論文集B2 Volume: 71巻-2
  • NAID: 130005109313
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Destruction Patterns and mechanisms of Coastal Levees on the Sendai Bay Coast Hit by the 2011 Tsunami (2014)
  • Author(s): Tatsuki Iida、 Akira Man、o Keiko Udo、 Hitoshi Tanaka
  • Journal Title: Advances in Natural and Technological Hazards Research Volume: 35 Pages: 309-320
  • Peer Reviewed / Open Access
• [Journal Article] 東北地方太平洋沖地震津波による海岸堤防破堤箇所周辺の浸食要因の考察 (2014)
  • Author(s): 飯田立樹, 呉 修一, 有働恵子, 真野 明, 田中 仁
  • Journal Title: 土木学会論文集B1 (水工学) Volume: 170 Pages: 1153-1158
  • Peer Reviewed / Open Access
• [Journal Article] k-εモデルによる植生のある急勾配流れの乱れ予測 (2014)
  • Author(s): 平田吉成, 真野 明, 有働恵,子 呉 修一
  • Journal Title: 土木学会論文集B1 (水工学) Volume: 170 Pages: 859-864
  • NAID: 130005070129
  • Peer Reviewed / Open Access
• [Journal Article] 東北三県における津波の河川遡上特性 (2014)
  • Author(s): Hitoshi Tanaka, Mohammad Bagus Adityawan, Akira Mano
  • Journal Title: 土木学会論文集B1 (水工学) Volume: 170 Pages: 1165-1170
  • NAID: 130005070157
  • Peer Reviewed / Open Access
• [Journal Article] Morphological changes at the Nanakita River mouth after the Great East Japan Tsunami of 2011 (2014)
  • Author(s): Hitoshi Tanaka, Mohammad Bagus Adityawan, Akira Mano
  • Journal Title: Coastal Engineering Elsevier Volume: 186 Pages: 14-16
  • Peer Reviewed / Open Access
• [Presentation] Breaching mechanism analysis of coastal levees hit by 2011 Tsunami (2014)
  • Author(s): Tatsuki Iida, Shuich Kur,e Keiko Ud,o Akira Mano, Hitoshi Tanaka
  • Organizer: the 19th IAHR-APD 2014 congress
  • Place of Presentation: Hanoi, VIetnam
  • Year and Date: 2014-09-21 – 2014-09-23
• [Presentation] Prediction of turbulence flow in steep slopes with vegetation by k-εturbulent model (2014)
  • Author(s): Yoshinari Hirata, Shuichi Kure, Keiko Udo, Akira Mano
  • Organizer: the 19th IAHR-APD 2014 congress
  • Place of Presentation: Hanoi, Vietnam
  • Year and Date: 2014-09-21 – 2014-09-23