Abstract
The structural behavior during the first reservoir-filling phase is significant for evaluating a super high arch dam’s safety. This paper presents an in situ monitoring network of the Xiluodu Dam in Yunnan, China, including a deformation monitoring system using geodetic and nongeodetic monitoring. The system also includes a refined thermal monitoring system based on a slab-level active cooling system. The thermal–structural decoupling numerical analysis method for a dam–water–foundation system is presented in this study with considerations of viscoelasticity material properties and internal/external thermal loads. The structural behavior of the Xiluodu Dam during the first reservoir-filling phase is analyzed using the smart monitoring system with combination of the in situ monitoring technique and the numerical simulation method. The in situ monitoring result can provide intuitional instructions of the structural behavior, showing a positive correlation between the dam deformation and the reservoir water level. The monitoring results are also used as the verification reference of the numerical model. The distribution characteristics of the displacement and stress of the dam subjected to load cases such as nonimpounding, impounding process, and the normal operating water level are discussed and predicted.
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Acknowledgments
This work is supported by the National 973 Researching Project of China (No. 2013CB035902), National Nature Science Foundation of China (Nos. 51279087 and 51339003) and Research Project of State Key Laboratory of Hydroscience and Engineering of Tsinghua University (SKLHSE-2015-C-02).
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Published In
Journal of Aerospace Engineering
Volume 30 • Issue 2 • March 2017
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© 2016 American Society of Civil Engineers.
History
Received: Feb 22, 2015
Accepted: Sep 15, 2015
Published online: Jan 12, 2016
Discussion open until: Jun 12, 2016
Published in print: Mar 1, 2017
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