Effects of Local Damage on Building Collapse due to Collision of Tsunami-Driven Ships

Research Project

Project/Area Number	18H01581
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Review Section	Basic Section 23010:Building structures and materials-related
Research Institution	The University of Tokyo
Principal Investigator	Yoshiaki Nakano 東京大学, 生産技術研究所, 教授 (10212094)
Co-Investigator(Kenkyū-buntansha)	松川和人東京大学, 生産技術研究所, 助教 (50709186)
Project Period (FY)	2018-04-01 – 2021-03-31
Project Status	Completed (Fiscal Year 2020)
Budget Amount *help	¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000) Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000) Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000) Fiscal Year 2018: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Keywords	津波 / 漂流物 / 鉄筋コンクリート / 津波漂流物 / 衝突 / 軸耐力 / 崩壊 / 残存軸耐力 / 津波避難ビル
Outline of Final Research Achievements	After the 2011 Great East Japan Earthquake, the number of research activities about tsunami load and building performance against tsunami has been increasing. Although quantitative tsunami load evaluation has been proposed, quantitative safety evaluation against building collapse due to collision of tsunami-driven ships is still insufficient because of the limited number of studies. In this research, effects on building collapse due to collision of tsunami-driven ships is investigated, and the design procedure to avoid building collapse is proposed through collision tests of building column and frame specimens.
Academic Significance and Societal Importance of the Research Achievements	本研究により，大規模津波が発生した際に生じうる，津波漂流船舶の建築物への衝突と，それによる建築物の崩壊に対する知見の蓄積が行われた。本研究で提案された，津波漂流船舶衝突に対する安全性検討手法は，柱の軸力保持能力評価にまだ課題を残すものの，将来の津波被害の低減を通して，安全な社会へ貢献するものと考えられる。