High-Cycle Fatigue of Diagonally Cracked Reinforced Concrete Bridge Girders: Field Tests
Publication: Journal of Bridge Engineering
Volume 11, Issue 6
Abstract
Large numbers of conventionally reinforced concrete deck–girder (RCDG) bridges remain in-service in the national highway system. Diagonal cracks have been identified in many of these bridges, which are exposed to millions of load cycles during service life. The anticipated life of these bridges in the cracked condition under repeated service loads is uncertain. RCDG bridges with diagonal cracks were inspected and instrumented. Strain and crack displacement data were collected under ambient traffic conditions and controlled test trucks. Results indicated relatively small stirrup stresses and diagonal cracks exhibited opening and closing under truck loading.
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Acknowledgments
This research was funded by the Oregon Department of Transportation and Federal Highway Administration. Mr. Steven Soltesz was the research coordinator and his assistance is greatly appreciated. Dr. Robert Connor of Purdue University and Mr. Ian Hodgson of Lehigh University coordinated instrumentation for three of the field study bridges. The findings and conclusions are those of the writers and do not necessarily reflect those of the project sponsors or the individuals acknowledged.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 11 • Issue 6 • November 2006
Pages: 699 - 706
Copyright
© 2006 ASCE.
History
Received: Dec 28, 2004
Accepted: Sep 27, 2005
Published online: Nov 1, 2006
Published in print: Nov 2006
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