Development of a Substructure Pseudo Dynamic Test Regardless of Building Member Shape and Structure Type

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04336
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23010:Building structures and materials-related
• Research Institution: Akita Prefectural University
• Principal Investigator: Sakurai Masato 秋田県立大学, システム科学技術学部, 准教授 (60710184)
• Co-Investigator(Kenkyū-buntansha): 菅野 秀人 秋田県立大学, システム科学技術学部, 教授 (20336449) ; 西田 哲也 秋田県立大学, システム科学技術学部, 教授 (40315627)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 鉄筋コンクリート造部材 / オンライン実験 / FEM

Outline of Final Research Achievements

This study examined the development of a system that removes the limitation of the assumed building geometry and further improves the accuracy of the response results by conducting experiments while reflecting the results of incremental analysis using a new nonlinear finite element method (FEM) in the feedback of response calculations, in contrast to the psudo dynamic test that is the main method for structural tests on RC structures in the architectural and civil engineering fields. The development of a system that improves the accuracy of the response results and removes the limitation of the assumed building geometry was studied. In this study, we constructed a FEM model, added a FEM analysis result feedback module to the existing system, and conducted verification experiments of the improved system. From the results of the experiments, we found that the proposed method has many issues that need to be resolved at this point, and we have organized these issues for the future.

Free Research Field

建築耐震構造

Academic Significance and Societal Importance of the Research Achievements

建物部材のうち，数値解析部分と実験部分とで区別の必要はあるのもの，開発システムは任意形状の建物に対し大規模なRC部材の動的実験設備がなくとも地震時応答性状についてさらなる精度向上が期待できる可能性を示した。このことから，学術分野の諸研究の高精度化や部材開発の現場での活用ニーズが広まることが期待され，我が国の建物耐震技術や設計基準の高度化に貢献しうる成果といえる。