2022 Fiscal Year Final Research Report
Evaluation of collapse resistance performance of entire bridge systems under mega-earthquake ground motions exceeding the design basis
Project/Area Number |
20K04674
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 22020:Structure engineering and earthquake engineering-related
|
Research Institution | Kyushu Sangyo University |
Principal Investigator |
OKUMURA TORU 九州産業大学, 建築都市工学部, 准教授 (40332027)
|
Co-Investigator(Kenkyū-buntansha) |
野中 哲也 名古屋工業大学, 工学(系)研究科(研究院), 教授 (20772122)
松村 政秀 熊本大学, くまもと水循環・減災研究教育センター, 教授 (60315976)
|
Project Period (FY) |
2020-04-01 – 2023-03-31
|
Keywords | 超過地震作用 / 振動台実験 / 大規模計算 / 鋼構造 |
Outline of Final Research Achievements |
We conducted shake table tests using reduced-scale model specimens of steel frames that constitute bridges. Through accurate numerical analysis, we demonstrated the ability to precisely evaluate the collapse behavior of the model specimens during the shake table experiments. Additionally, we performed a detailed numerical analysis using a large-scale model of the entire bridge system and executed it on a supercomputer. The study aimed to investigate the collapse behavior of full-scale bridges under seismic actions and propose a methodology to assess the margin of safety from component failure to reaching the ultimate load-carrying capacity of the structure.
|
Free Research Field |
耐震工学,鋼構造
|
Academic Significance and Societal Importance of the Research Achievements |
激甚化する自然災害に対する事前対応の重要性が認識されつつある中,本研究は予測が困難である地震に対する構造物の致命的な被害低減を目指し,工学的な技術を駆使して対処法を検討したものである.研究成果は,想定外の地震を考慮した耐震設計技術に大きく寄与するとともに,開発したシミュレーション手法は次世代の耐震設計へ向けた新たな展開の糸口となるものと考えられる.
|