Fatigue Performance of High-Strength Reinforcing Steel
Publication: Journal of Bridge Engineering
Volume 17, Issue 3
Abstract
An evaluation of concrete reinforcing bar fatigue provisions of AASHTO LRFD Bridge Design Specifications as they pertain to the use of high-strength reinforcing steel is presented. Two large-scale proof tests and a review of available published data demonstrate that presently accepted values for the fatigue or endurance limit for reinforcing steel are applicable, and likely conservative, when applied to higher-strength bars. A minor revision to the AASHTO specification is proposed to eliminate the fatigue penalty resulting from the use of higher-strength reinforcing steel. Finally, it is shown that fatigue considerations will rarely affect the design of typical reinforced-concrete members having a specified yield strength, .
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Published In
Journal of Bridge Engineering
Volume 17 • Issue 3 • May 2012
Pages: 454 - 461
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Feb 23, 2011
Accepted: Jun 23, 2011
Published online: Jun 25, 2011
Published in print: May 1, 2012
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