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Variable-intercept panel model for deformation zoning of a super-high arch dam
Zhongwen Shi1, Chongshi Gu1, Dong Qin1
1State 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, Hohai University, Nanjing, 210098 China ; College of Water-Conservancy and Hydropower Engineering, Hohai University, Nanjing, 210098 China.
This study introduces a new method for dam deformation zoning in super-high arch dams. It uses similarity indexes and panel models to analyze spatial-temporal deformation patterns for better monitoring.
Area of Science:
- Civil Engineering
- Geotechnical Engineering
- Structural Health Monitoring
Background:
- Super-high arch dams exhibit complex spatial-temporal deformation patterns.
- Accurate deformation analysis is crucial for dam safety and structural health monitoring.
- Existing methods may not fully capture the nuanced deformation characteristics of these structures.
Purpose of the Study:
- To develop a novel deformation zoning method for super-high arch dams.
- To establish dam deformation similarity indexes and measurement techniques.
- To create robust panel models for monitoring dam deformation effects.
Main Methods:
- Analysis of deformation zoning features and panel data clustering.
- Application of the entropy weight method for determining the number of deformation zones.
- Development of a variable-intercept panel model incorporating dummy variables for special effects.
- Establishment of fixed and random effects panel models using Hausman test for selection.
Main Results:
- A deformation zoning method for super-high arch dams was proposed and implemented.
- Dam deformation similarity indexes were determined based on spatial-temporal features.
- Variable-intercept panel models effectively analyzed fixed and random effects of dam deformation.
- Case study validated the effectiveness of the developed models.
Conclusions:
- The proposed deformation zoning method enhances the understanding of super-high arch dam behavior.
- The developed panel models provide a reliable framework for dam deformation monitoring.
- This research contributes to improved structural health assessment and safety management of large dams.
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