Strengthening of Composite Steel-Concrete Bridges
Publication: Journal of Structural Engineering
Volume 121, Issue 12
Abstract
The concept of prestressing has been used as an effective technique to strengthen composite steel-concrete girders in bridges and buildings. Although several researchers have investigated the behavior of this structural system under static loading, no one has addressed the fatigue behavior. This paper analyzes and summarizes the fatigue test data for the main constituent components of prestressed composite steel-concrete girders—strands, shear studs, and cover plates. The data are also compared with the American Association of State Highway and Transportation Officials (AASHTO) requirements. It appears that end-anchored strands for nonbonded, prestressed structures can be designed for fatigue to the AASHTO allowable stress range for category C. AASHTO's approach to designing shear studs and cover plates seems reasonable for prestressed composite girders. A companion paper presents the fatigue behavior of these elements within a prestressed composite girder.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 121 • Issue 12 • December 1995
Pages: 1842 - 1849
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Dec 1, 1995
Published in print: Dec 1995
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