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Open AccessArticle

Lessons Learned Regarding Cracking of a Concrete Arch Dam Due to Seasonal Temperature Variations

KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden
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Infrastructures 2020, 5(2), 19; https://doi.org/10.3390/infrastructures5020019
Received: 30 January 2020 / Revised: 17 February 2020 / Accepted: 17 February 2020 / Published: 19 February 2020
(This article belongs to the Special Issue Advances in Dam Engineering)
Dams located in cold areas are subjected to large seasonal temperature variations and many concrete dams have cracked as a result. In the 14th International Commission on Large Dams (ICOLD) Benchmark Workshop, a case study was presented where contributors should predict the cracking and displacements due to seasonal variations. In this paper, the conclusions from this case study are presented. Overall, the results from the contributors are well in line with the observations that can be made on the dam and the measurements performed. This shows that using non-linear numerical models is a suitable tool to accurately predict cracking and estimate the displacements of cracked dams. This case study also highlighted important aspects that need special consideration in order to obtain realistic results that can be used to predict the crack pattern, these being: (1) the importance of performing transient thermal analyses based on robin boundary conditions; (2) the influence of contact formulation between the concrete dam and the foundation; and (3) the use of realistic non-linear material properties. The results and conclusions presented in this paper constitute one important step in achieving best practices to estimate dam safety and better understand the potential failure modes and ageing of concrete dams. View Full-Text
Keywords: concrete arch dams; seasonal temperature variations; crack prediction; non-linear finite element analyses concrete arch dams; seasonal temperature variations; crack prediction; non-linear finite element analyses
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MDPI and ACS Style

Malm, R.; Hellgren, R.; Enzell, J. Lessons Learned Regarding Cracking of a Concrete Arch Dam Due to Seasonal Temperature Variations. Infrastructures 2020, 5, 19.

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