Analytical Model and Experimental Study of Failure Behavior of Thin-Walled Shallow Concrete Domes
Publication: Journal of Structural Engineering
Volume 137, Issue 1
Abstract
The failure behavior of thin-walled shallow concrete domes under short-term and long-term loading is investigated theoretically and experimentally. The paper focuses on the long-term effects of creep and shrinkage, the material nonlinearity of the concrete under biaxial loading, and the geometric nonlinearity aspects of the structure through the development of nonlinear theoretical models for the short-term and long-term analyses. Special attention to the phenomenon of creep buckling is given in the development of the model, but without considering the nonaxisymmetric bifurcation response. The experimental phase involves the testing of two shallow domes. The first is loaded to failure under a gradually increasing pressure. The second dome is subjected to a constant sustained pressure for a period of 2.5 months. A series of tests for the characterization of the mechanical properties of the concrete, and its creep and shrinkage characteristics is also reported. The results and the theoretical-experimental comparison provide insight into the failure behavior of shallow concrete domes under both short-term and sustained loading, and contribute to the understanding of failure behavior of general concrete shells.
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Acknowledgments
The work reported in this paper was supported by the Australian Research Council (ARC) through a Discovery Project awarded to the second and third writers.
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Published In
Journal of Structural Engineering
Volume 137 • Issue 1 • January 2011
Pages: 88 - 99
Copyright
© 2011 ASCE.
History
Received: Sep 17, 2009
Accepted: Jun 30, 2010
Published online: Dec 15, 2010
Published in print: Jan 2011
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