Experimental Investigation of Bending Fatigue Response of Grouted Stay Cables
Publication: Journal of Bridge Engineering
Volume 15, Issue 2
Abstract
An experimental investigation was conducted to determine the susceptibility of grouted stay cables to bending fatigue damage. The results from twelve, bending fatigue tests are reported in this paper. Fretting of adjacent wires within a single strand was the dominant cause of bending fatigue damage in the grouted stay-cable specimens. This damage tended to be concentrated at the ends of the specimens and at locations where concentrated loads were applied to the stays. The laboratory tests indicated that the risk of bending fatigue damage was low at the tension rings, along the free length of the stays, and in the vicinity of unintentionally crossed strands.
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Acknowledgments
The research activities described in this paper were sponsored by the Texas Department of Transportation to the University of Texas at Austin. The project director was Keith Ramsey. The contributions of former graduate students Matthew Bean, Joseph Dowd, John Eggers, Jun Ki Lee, Aaron Pebley, Marcel Poser, Jennifer Ridd, and Adrienne Willox and former undergraduate students Tamer Botros, Dylan Freytag, and Margaret Warpinski are gratefully acknowledged. Pure Technologies Ltd. provided the acoustic system used to monitor wire breaks during the fatigue tests. The opinions expressed in this paper are those of the researchers and do not necessarily represent those of the sponsors.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 15 • Issue 2 • March 2010
Pages: 123 - 130
Copyright
© 2010 ASCE.
History
Received: Aug 1, 2008
Accepted: May 13, 2009
Published online: Sep 16, 2009
Published in print: Mar 2010
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