Accuracy Improvement Method for Residual Seismic Capacity Evaluation of Earthquake Damaged RC Buildings

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K14815
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 22020:Structure engineering and earthquake engineering-related
• Research Institution: Osaka Institute of Technology
• Principal Investigator: Quan Chunri 大阪工業大学, 工学部, 講師 (70847847)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 残存耐震性能評価 / 損傷度 / 被災度 / 鉄筋コンクリート / 損傷量

Outline of Final Research Achievements

In this project, experimental and analytical studies were conducted to improve the accuracy of residual seismic capacity evaluation results for earthquake damaged weak-beam RC buildings. As a result, a correlation model between the damage class and deformation of flexural RC beams was proposed. Then, the effects of the collapse mechanism and the available investigating members on the accuracy of the residual seismic capacity evaluation of RC buildings were quantitatively grasped. Finally, a method to improve the accuracy of the residual seismic capacity evaluation for RC buildings was proposed, considering the actual conditions of the earthquake damaged site.

Free Research Field

建築構造、耐震工学

Academic Significance and Societal Importance of the Research Achievements

本研究では，部材に表出する損傷を確認できないことなど実際の地震被災現場状況を考慮し，骨組の崩壊機構の特定が建物の残存耐震性能評価結果に与える影響を明らかにした。また，今まで前例のない地震被害現場調査への適用性およびその精度がより高い梁降伏型RC造建物の残存耐震性能評価手法を確立した。この研究成果は，同類の建物が数多く建てられている国内外において，将来起こりうる地震後に建物の被害状況をより正確に把握することができ，被災地域の速やかな復旧にも役立つものになると考えられる。