Treatment of Solar Radiation by Spatial and Temporal Discretization for Modeling the Thermal Response of Arch Dams
Publication: Journal of Engineering Mechanics
Volume 140, Issue 11
Abstract
A methodology for computing thermal loads in arch dams is proposed. The methodology considers the nonuniform distribution of solar insolation over dam faces because of shading, curvature of dam faces, orientation, and slopes. Because, in most cases, the mean daily global solar radiation is the only type available, a methodology for estimating hourly solar energy reaching dam faces is described. The methodology is applied to a case study where observations from 21 thermometers embedded in the concrete and data of climatic variables are available. The concrete temperature field is successfully computed, with good agreement between observations and predictions. The proposed methodology is compared with other approaches, and the consequences on the stress calculations are analyzed.
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Acknowledgments
This work was supported by the Ministerio de Economía y Competitividad [Spanish Ministry of Economy and Competitiveness] under code No. IPT-2012-0813-390000, titled Desarrollo del Software iCOMPLEX para el Control y Evaluación de la Seguridad de Infraestructuras Críticas (Development of the iCOMPLEX Software for the Control and Assessment of the Safety of Critical Infrastructures).
The authors thank the company Ofiteco and l’Agència Catalana de l’Aigua (the Catalan Water Agency) for measured data from the La Baells Dam.
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Published In
Journal of Engineering Mechanics
Volume 140 • Issue 11 • November 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 27, 2013
Accepted: Apr 1, 2014
Published online: Apr 30, 2014
Discussion open until: Sep 30, 2014
Published in print: Nov 1, 2014
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