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Steel and Composite Structures Volume 36, Number 5, September10 2020 , pages 521-531 DOI: https://doi.org/10.12989/scs.2020.36.5.521 |
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An analytical approach of behavior change for concrete dam by panel data model |
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Hao Gu, Meng Yang, Chongshi Gu, Wenhan Cao, Xiaofei Huang and Huaizhi Su
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| Abstract | ||
| The behavior variation of concrete dam is investigated, based on a new method for analyzing the data model of concrete dam in service process for the limitation of wavelet transform for solving concrete dam service process model. The study takes into account the time and position of behavior change during the process of concrete dam service. There is no dependence on the effect quantity for overcoming the shortcomings of the traditional identification method. The panel data model is firstly proposed for analyzing the behavior change of composite concrete dam. The change-point theory is used to identify whether the behavior of concrete dams changes during service. The phase space reconstruction technique is used to reconstruct the phase plane of the trend effect component. The time dimension method is used to solve the construction of multi-transformation model of composite panel data. An existing 76.3-m-high dam is used to investigate some key issues on the behavior change. Emphasis is placed on conversion time and location for three time periods consistent with the practical analysis report for evaluating the validity of the analysis method of the behavior variation of concrete dams presented in this paper. | ||
| Key Words | ||
| panel; concrete dam; behavior variation; data model; conversion time and location | ||
| Address | ||
| Hao Gu: College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China; State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing 210098, China Meng Yang, Chongshi Gu and Huaizhi Su:College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing 210098, China Wenhan Cao: College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China Xiaofei Huang: Library of Hohai University, Nanjing 210098, China | ||