An Experimental Study on the Repair Evaluation of Deteriorated RC Beams Using Natural Frequency and Mechanical Behavior Related to Damage Condition

Yilong Cao, Akihiko Nishimura, Xiu Luo, Masao Okoshi, Wendong Tang, Hidekazu Nishimura

研究成果: Conference contribution

抄録

This study aims to quantitatively evaluate the repair of deteriorated RC beams for reuse through natural frequency and proposes a method that describes the mechanical behavior of structures. A static loading test was conducted to determine the load-carrying capacity and deformation performance of structures. To investigate the soundness of the RC beam based on the change of the natural frequency at each load stage, an impact vibration test (IVT) was conducted. Then, a higher vibration mode of natural frequencies, which can better reflect the degree of damage of a frame, was used as an evaluation index to represent the mechanical behavior of structures. The result confirmed that, although in case where IVT is challenging to perform due to location limitations, the damage condition can be estimated from the axial stiffness (EA) of RC beams by axial impact to measure the natural frequencies. Regarding the defined model of mechanical behavior, the results in each deteriorated pattern or load stage to be organized by level of damage. Accordingly, the reliability of the quantitative evaluation of repair effectiveness using the proposed method was verified.

本文言語English
ホスト出版物のタイトルProceedings of the 3rd International Civil Engineering and Architecture Conference - CEAC 2023
編集者Marco Casini
出版社Springer Science and Business Media Deutschland GmbH
ページ205-221
ページ数17
ISBN(印刷版)9789819963676
DOI
出版ステータスPublished - 2024
イベント3rd International Civil Engineering and Architecture Conference, CEAC 2023 - Kyoto, Japan
継続期間: 2023 3月 172023 3月 20

出版物シリーズ

名前Lecture Notes in Civil Engineering
389
ISSN(印刷版)2366-2557
ISSN(電子版)2366-2565

Conference

Conference3rd International Civil Engineering and Architecture Conference, CEAC 2023
国/地域Japan
CityKyoto
Period23/3/1723/3/20

ASJC Scopus subject areas

  • 土木構造工学

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