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Structural health monitoring of arch dams using dynamic and static measurements
Expanded Title:The key objective of this project was to develop a holistic approach to structural safety assessment of concrete arch dams, while developing high level manpower in the field of dam safety. Two methodologies, the ambient vibration method (AVM) and the Westergaard method which is the most commonly adopted approach for dynamic analysis of dams, were tested to establish their applicability in finite element model updating of arch dams based on ambient vibration testing. The project demonstrated that the ambient vibration testing (AVM) is a viable methodology for surveillance and monitoring of arch dams, while the Westergaard method tends to overestimate the added mass of water for divergent and/or skewed reservoirs. A significant finding is that the Westergaard method cannot be directly applied to dams with divergent and/or skewed reservoirs. Additionally, the effect of seasonal temperature variations on arch dams was modelled and the results show that it is critical to include temperature effects for dynamic analysis of arch dams. However once the initial thermal stresses have been introduced, the influence of seasonal temperature variations on dynamic characteristics is negligible.
Date Published:08/09/2013
Document Type:Research Report
Document Subjects:Water Resource Management/IWRM - Hydrogeology
Document Keywords:Hydrology
Document Format:Report
Document File Type:pdf
Research Report Type:Standard
WRC Report No:2025/1/13
ISBN No:978-1-4312-0453-3
Authors:Moyo P; Oosthuizen C
Project No:K5/2025
Originator:WRC
Organizations:University of Cape Town; Department of Water Affairs
Document Size:3 259 KB
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