Mathematical Modeling and Numerical Analysis of Thermal Distribution in Arch Dams considering Solar Radiation Effect

Mirzabozorg, H.; Hariri-Ardebili, Mohammad Amin; Shirkhan, M.; Kolbadi, S. Mahdi S.

doi:10.1155/2014/597393

Cited by 26 publications

(16 citation statements)

References 10 publications

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“…It should be noted that a transient thermal analysis is performed before the structural analyses. Solar radiations were modelled in the aforementioned simulations using a precise formulation utilized by the authors during the previous studies [19,20]. Meanwhile, the variation of the reservoir surface level was elaborated based on the recorded history in the dam site.…”

Section: Analyses' Results and Discussionmentioning

confidence: 99%

Simulating Structural Responses of a Generic AAR-Affected Arch Dam Considering Seismic Loading

Lamea

Mirzabozorg

2017

Scientia Iranica

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Abstract. Alkali-Aggregate Reaction (AAR) is a deteriorative phenomenon for concrete that a ects the performance of structures. This study focuses on seismic and postearthquake behaviors of an AAR-a ected dam. A computer program is developed for simulating the structural behavior of AAR-a ected dams including the seismic and postearthquake durations. A thin high double-curvature arch dam is selected as a case study and is modelled in a series of analyses within the assumed 30-year operating period. Each analysis includes an earthquake excitation in a di erent speci ed time. In each analysis, the seismic record is applied to the dam at di erent statuses of AAR progression, considering the proposed ARI index. The results show that AAR a ects seismic performance of the dam, i.e., with the AAR progression, the dynamic responses are signi cantly changed. On the other side, the e ect of earthquake occurrence time on the dam post-earthquake behavior is not noticeable. This may be explained by the linear elastic behavior assigned to the body material in the provided FE model.

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Section: Analyses' Results and Discussionmentioning

confidence: 99%

Simulating Structural Responses of a Generic AAR-Affected Arch Dam Considering Seismic Loading

Lamea

Mirzabozorg

2017

Scientia Iranica

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“…A similar curve was also produced that started with the warm year, and the contributors were free to choose which to use (see [1]). The influence from solar radiation can be significant on high, thin arch dams, as shown by [14]. However, it was not considered in this case.…”

Section: Temperature Variationsmentioning

confidence: 99%

“…In these types of studies, the predicted behaviour is also commonly calibrated or compared with measurements. This was, for instance, the case in [14,15], who performed the calibration of the thermal behaviour of the Karun III Dam with measurements, but also estimated the structural safety. There are, however, few references that have performed simulations that account for crack initiation and propagation that have aimed to predict the crack pattern and analyse how these cracks influence the dam behaviour.…”

Section: Introductionmentioning

confidence: 99%

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

2020

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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.

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“…У литератури постоји велики број радова који се бави овим проблемима [2], [3], [4]. У овом раду, температура воде у акумулацији одређена је према Bofang-овом моделу [5], на бази мерења температуре воде на брани "Бајина Башта".…”

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Temperature U Brani I Akumulaciji "Bajina Bašta" U Periodu 1995-2015.

Josipović¹,

Aškrabić²,

Kuzmanović³

et al. 2016

Zbornik GFS

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Mathematical Modeling and Numerical Analysis of Thermal Distribution in Arch Dams considering Solar Radiation Effect

Cited by 26 publications

References 10 publications

Simulating Structural Responses of a Generic AAR-Affected Arch Dam Considering Seismic Loading

Simulating Structural Responses of a Generic AAR-Affected Arch Dam Considering Seismic Loading

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

Temperature U Brani I Akumulaciji "Bajina Bašta" U Periodu 1995-2015.

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