Journal
EXPERT SYSTEMS WITH APPLICATIONS
Volume 40, Issue 12, Pages 4922-4933Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2013.02.033
Keywords
Dam; Long term behavior; Observation time series; Multifractal detrended fluctuation analysis
Categories
Funding
- National Natural Science Foundation of China [SN: 51179066, 51139001]
- Jiangsu Natural Science Foundation [SN: BK2012036]
- Program for New Century Excellent Talents in University [SN: NCET-10-0359]
- Jiangsu Province 333 High-Level Personnel Training Project [SN: BRA2011179]
- MWR [SN: 201301061, 201201038]
- Open Foundation of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering [SN: 2012490211]
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The fractal theory was used to describe long term behavior of dam structures by means of determining (mono-) fractal exponents. Many records do not exhibit a simple monofractal scaling behavior, which can be accounted for by a single scaling exponent. In this paper the multifractal detrended fluctuation analysis (MF-DFA) is employed to analyze the time series of in situ observed data of existing dam which intrinsically reflects its long term behavior and structural evolution law. Deformation analysis of one gravity dam is taken as an example, the multifractal characteristic of the time series is obtained. The results show that this method can reliably determine the multifractal scaling behavior of time series of existing dams. The fractal theory can be applied to predict and diagnose dam behavior. (C) 2013 Elsevier Ltd. All rights reserved.
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