期刊
JOURNAL OF SOUND AND VIBRATION
卷 333, 期 18, 页码 4123-4138出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2014.04.056
关键词
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资金
- Nuclear Research & Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Knowledge Economy [2011T100200080]
- Smart Civil Infrastructure Research Program - Ministry, Land, Infrastructure and Transport (MOLIT) of the Korean Government [13SCIPA01]
- Korea Agency for Infrastructure Technology Advancement (KAIA)
This paper presents a new damage detection approach for cantilever beam-type structures using the damage-induced inter-storey deflection (DIID) estimated by modal flexibility matrix. This approach can be utilized for damage detection of cantilever beam-type structures such as super high-rise buildings, high-rise apartment buildings, etc. Analytical studies on the DIID of cantilever beam-type structures have shown that the DIID abruptly occurs from damage location. Baseline modification concept was newly introduced to detect multiple damages in cantilever beam-type structures by changing the baseline to the prior damage location. This approach has a clear theoretical base and directly identifies damage location(s) without the use of a finite element (FE) model. For validating the applicability of the proposed approach to cantilever beam-type structures, a series of numerical and experimental studies on a 10-storey building model were carried out. From the tests, it was found that the damage locations can be successfully identified by the proposed approach for multiple damages as well as a single damage. In order to confirm the superiority of the proposed approach, a comparative study was carried out on two well-known damage metrics such as modal strain-based damage index approach and uniform load surface curvature approach. (C) 2014 Elsevier Ltd. All rights reserved.
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