Utilization of Nonlinear Finite Elements for the Design and Assessment of Large Concrete Structures. II: Applications
Publication: Journal of Structural Engineering
Volume 141, Issue 9
Abstract
This second-part article presents applications of advanced nonlinear finite-element analysis for the design of large reinforced-concrete structures. Because shear and the size effect are fundamental aspects of these structures, the first section of this paper is devoted to the prediction of shear failure for very large members more than 3 m deep. It is shown that the tendency of shear strength is much less sensitive to size effects for very large members than the predictions of some design code equations. Applications to the draft tube complex structure are then presented in a second part. A comparison of cracking patterns with an existing powerhouse is performed at the service level. It is shown that thermal effects have an important effect on the final cracking pattern. The draft tube model is then analyzed up to failure. Following a new design methodology proposed by the authors in a previous paper, and using the model error properties computed in part 1, the global resistance factor is computed for the ultimate level. The effects of temperature, nominal shear reinforcement, and lateral confinement are discussed.
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Acknowledgments
The authors would like to acknowledge the financial support obtained from Natural Sciences and Engineering Council (NSERC) of Canada, the Center for Research on Concrete Infrastructures of Quebec (FQRNT-CRIB), and the Quebec Ministry of Transportation. The first author would like to express his gratitude to the Hydro division of SNC-Lavalin and Hydro-Québec who directly and indirectly supported this work in an encouraging industrial environment.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 9 • September 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Oct 1, 2013
Accepted: Aug 19, 2014
Published online: Oct 16, 2014
Discussion open until: Mar 16, 2015
Published in print: Sep 1, 2015
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