Damage prediction of super high-rise RC buildings constructed nearby surface faulting

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04668
• 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: Tokyo University of Science
• Principal Investigator: Nagano Masayuki 東京理科大学, 創域理工学部建築学科, 教授 (60416865)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: パルス性地震動 / 地盤増幅 / 超高層RC造建物 / 魚骨モデル

Outline of Final Research Achievements

Through the evaluation of near field ground motions close to the surface faulting, the relationship between the fault parameters, subsurface structure models, etc. and pulse-type ground motions were investigated. Averaged nonlinear vibration analysis models that can be applied to a large number of super high-rise RC buildings were constructed based on the fishbone model to evaluate extremely large amplitude responses by using basic information such as number of stories, design base shear coefficient, and aspect ratio.

Free Research Field

地震工学

Academic Significance and Societal Importance of the Research Achievements

1995年兵庫県南部地震から始まり，2016年熊本地震本震，さらには2023年トルコ・シリア地震に至るまで，地表断層の出現を伴う地震が多数発生している。現在の耐震設計で用いられる振幅レベル以上の強震記録が得られている。本研究を通じ国内に建つ1400棟を超えるRC造超高層建物に対し、今後予測される大地震発生時の応答予測に資する成果が得られた。