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タイトル: | Evaluating damage extent of fractured beams in steel moment-resisting frames using dynamic strain responses |
著者: | Li, Xiaohua Kurata, Masahiro https://orcid.org/0000-0003-1624-1127 (unconfirmed) Nakashima, Masayoshi |
著者名の別形: | 倉田, 真宏 中島, 正愛 |
キーワード: | Damage quantification Dynamic strain Steel moment-resisting frames Wireless sensing |
発行日: | Apr-2015 |
出版者: | John Wiley and Sons Ltd |
誌名: | Earthquake Engineering and Structural Dynamics |
巻: | 44 |
号: | 4 |
開始ページ: | 563 |
終了ページ: | 581 |
抄録: | Delays in the postearthquake safety estimations of important buildings significantly increase unnecessary disorder in economic and social recovery following devastating earthquakes. Providing promptness and objectivity in evaluation procedures, damage detection through a structural health monitoring system using sensors attracts attention from building owners and other stakeholders. Nonetheless, local damage on individual structural elements is not easily identifiable, as such damage weakly relates to the global vibrational characteristics of buildings. The primary objectives of this research are to present and verify a method that quantifies the amount of local damage (i.e., fractures near beam-column connections) for the health monitoring of steel moment-resisting frames that have undergone a strong earthquake ground motion. In this paper, a novel damage index based on the monitoring of dynamic strain responses of steel beams under ambient vibration before and after earthquakes is firstly presented. Then, the relation between the amount of local damage and the presented damage index is derived numerically with a parametric study using a nine-story steel moment-resisting frame model. Finally, the effectiveness of the damage index and an associated wireless strain-sensing system are examined with a series of vibration tests using a five-story steel frame test bed. |
著作権等: | This is the peer reviewed version of the following article: [Evaluating damage extent of fractured beams in steel moment-resisting frames using dynamic strain responses, Earthquake Engineering and Structural Dynamics, 44(4) 563-581], which has been published in final form at https://doi.org/10.1002/eqe.2536. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. The full-text file will be made open to the public on 29 December 2015 in accordance with publisher's 'Terms and Conditions for Self-Archiving' This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/265292 |
DOI(出版社版): | 10.1002/eqe.2536 |
出現コレクション: | 学術雑誌掲載論文等 |
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