Structural Analysis of the Embedded Spiral Case in the Three Gorges Hydropower Station
Publication: Practice Periodical on Structural Design and Construction
Volume 17, Issue 2
Abstract
The 15th turbine unit in the Three Gorges hydropower station was proposed to use a complete bearing spiral case, a first in large hydropower stations in China. This research performs a three-dimensional, nonlinear, finite-element statical analysis of the concrete structure based on a damage-plasticity model to study the reliability of the spiral case and the safety of the turbine unit under various working conditions. Detailed analyses performed include stress distribution in the spiral case and reinforcement bars, range of potential damages in the surrounding concrete, and displacement of the overall structure. The computational results indicate that the embedment method proposed for the 15th turbine unit at the Three Gorges hydropower station is feasible and will satisfy safety and design requirements.
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Acknowledgments
This research is sponsored by the National Natural Science Foundation of China (51179141). The constructive comments of Professor Ma Shanding, Wuhan University, are gratefully acknowledged.
References
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Information
Published In
Practice Periodical on Structural Design and Construction
Volume 17 • Issue 2 • May 2012
Pages: 41 - 47
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Aug 14, 2008
Accepted: Mar 18, 2011
Published online: Mar 21, 2011
Published in print: May 1, 2012
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