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SCIENCE CHINA Technological Sciences, Volume 61 , Issue 6 : 906-915(2018) https://doi.org/10.1007/s11431-016-9088-9

Observed displacement data-based identification method of deformation time-varying effect of high concrete dams

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  • ReceivedNov 7, 2016
  • AcceptedJun 21, 2017
  • PublishedSep 11, 2017

Abstract

The long-term safety of high concrete dams has become the focus and central issues of public attention. Deformation is an actual comprehensive reflection of concrete dams. Especially the deformation time-varying effect, is a key index for evaluating the structural behavior, health status, and their evolution of a concrete dam in long-term service. In this paper, causing factors of the deformation time-varying effect of concrete dams were analyzed, and the time-varying effect was divided into two parts, which are the inherent time-varying effect and the time-varying effect caused by the change of dam structural performance. Then, based on the observed dam displacement and the wavelet multi-resolution analysis, causal models for identifying the later deformation time-varying effect and the identification process were proposed. Finally, the efficiency and rationality of the proposed method were verified by two actual concrete dams with runoff reservoir and regulatory reservoir.


Funded by

National Natural Science Foundation of China(51139001 ,&, 51479054)

Open Foundation of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering(2016491111)


Acknowledgment

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51709021 & 51479054), and the Open Foundation of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering (Grant No. 2016491111).


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