Fatigue Behavior of a Steel-Free FRP–Concrete Modular Bridge Deck System
Publication: Journal of Bridge Engineering
Volume 11, Issue 4
Abstract
This paper presents results of an evaluation of the fatigue performance of a novel steel-free fiber-reinforced polymer (FRP)–concrete modular bridge deck system consisting of wet layup FRP–concrete deck panels which serve as both formwork and flexural reinforcement for the steel-free concrete slab cast on top. A two-span continuous deck specimen was subjected to a total of 2.36 million cycles of load simulating an AASHTO HS20 design truck with impact at low and high magnitudes. Quasistatic load tests were conducted both before initiation of fatigue cycling and after predetermined numbers of cycles to evaluate the system response. No significant stiffness degradation was observed during the first 2 million cycles of fatigue service load. A level of degradation was observed during subsequent testing at higher magnitudes of fatigue load. A fairly elastic and stable response was obtained from the system under fatigue service load with little residual displacement. The system satisfied both strength and serviceability limit states with respect to the code requirements for crack width and deflection.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 11 • Issue 4 • July 2006
Pages: 474 - 488
Copyright
© 2006 ASCE.
History
Received: Feb 14, 2005
Accepted: Aug 16, 2005
Published online: Jul 1, 2006
Published in print: Jul 2006
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