In-Plane Stability of Parabolic Arches with Horizontal Spring Supports. II: Experiments
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Volume 133, Issue 8
Abstract
In the companion paper, the nonlinear elastic stability analysis of a shallow parabolic arch with horizontal spring supports was investigated. The solution for the in-plane antisymmetric bifurcation buckling load and an approximate solution for the symmetric snap-through buckling load for shallow arches were proposed, and the effects of the stiffness of the horizontal springs on the buckling load and buckling behavior of arches were studied. When the stiffness of each of the spring supports is the same, the structural configuration replicates that of a tied arch with roller supports. This paper reports short-term experimental studies undertaken on two shallow parabolic reinforced concrete arches. The two supports of each arch were connected by a steel tie. The arches failed in an antisymmetric bifurcation buckling mode well before the maximum stress in the concrete reached its compressive strength. Both the load–deflection response and the buckling load are compared with theoretical predictions that incorporate various degrees of nonlinearity in their formulation, including the predictions derived in the companion paper.
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Acknowledgments
The work reported in this paper was supported by the Australian Research Council through a Discovery Project awarded to the second and third writers. The writers are thankful to the laboratory staff at the Heavy Structures Laboratory at the University of New South Wales for their assistance with the laboratory experiments.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 8 • August 2007
Pages: 1138 - 1145
Copyright
© 2007 ASCE.
History
Received: Sep 8, 2005
Accepted: Jan 22, 2007
Published online: Aug 1, 2007
Published in print: Aug 2007
Notes
Note. Associate Editor: M. Asghar Bhatti
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