Experimental Determination of Resistance Characteristics of Support Details Used in Prestressed Concrete Bridge Girders
Publication: Journal of Bridge Engineering
Volume 14, Issue 5
Abstract
Static load tests were performed on support details used at the ends of prestressed concrete pedestrian bridge girders to determine the resistance characteristics of girder supports in the direction perpendicular to the longitudinal axis of the girders. The specimens tested represent support details that have also been widely used in prestressed concrete highway bridges in Minnesota and in other states. Two specimens, one representing the free-end detail and one representing the restrained-end detail were subjected to a combination of vertical and lateral loads. The applied loading was intended to simulate the loading conditions to which the girder ends would be subjected in the event of an over-height vehicle collision with the bridge. The tests revealed two types of lateral load resisting mechanisms depending on the type of support detail. The specimen with the free-end detail resisted the lateral loading through sliding friction between the components of the support assembly. Deformation of this specimen was a combination of shear deformation of the bearing pad and sliding of various support components. The restrained-end detail exhibited larger lateral load capacity than the free-end detail due to the resistance provided by the anchor rods that were intended to prevent the lateral movement of the girder ends. Failure of the specimen with restrained-end detail was due to the concrete breakout and bending of the anchor rods.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The research documented in this paper was sponsored by the Minnesota Department of Transportation (Mn/DOT). Appreciation is expressed to Jihshya Lin, Kevin Western, and Erik Wolhowe of the Mn/DOT Office of Bridges and Structures for their input and assistance. The support provided by the University of Minnesota Graduate School in the form of a Doctoral Dissertation Fellowship for the first writer is also acknowledged. The views expressed in this paper are those of the authors and do not necessarily reflect those of the sponsors.
References
Bakht, B., and Jaeger, L. G. (1988). “Bearing restraint in slab-on-girder bridges.” J. Struct. Eng., 114(12), 2724–2740.
Baran, E., Schultz, A. E., and French, C. E. (2006). “Tension tests on cast-in-place inserts: The influence of reinforcement and prestress.” PCI J., 51(5), 88–108.
Baran, E., Schultz, A. E., and French, C. E. (2007a). “Analysis of the strength and stability of prestressed concrete through-girder pedestrian bridges subjected to vehicular impact.” Research Rep. No. 2007-08, Minnesota Dept. of Transportation, St. Paul, Minn.
Baran, E., Schultz, A. E., and French, C. E. (2007b). “Behavior of girder-floor beam connections in prestressed concrete pedestrian bridges subjected to lateral impact loads.” J. Struct. Eng., 133(11), 1670–1681.
Feldman, L. R., Jirsa, J. O., and Kowal, E. S. (1998). “Repair of bridge impact damage.” Concr. Int., 20(2), 61–66.
Roeder, C. W., Stanton, J. F., and Feller, T. (1989). “Low temperature behavior and acceptance criteria for elastomeric bridge bearings.” National Cooperative Highway Research Program Rep. No. 325, Transportation Research Board, Washington, D.C.
Shanafelt, G. O., and Horn, W. B. (1980). “Damage evaluation and repair methods for prestressed concrete bridge members.” National Cooperative Highway Research Program Rep. No. 226, Transportation Research Board, Washington, D.C.
University of Maryland Bridge Engineering Software and Technology Center. (2001). “Maryland study, vehicle collisions with highway bridges.” Research Rep. No. SP907B1, Maryland State Highway Administration, College Park, Md.
Wardhana, K., and Hadipriano, F. C. (2003). “Analysis of recent bridge failures in the United States.” J. Perform. Constr. Facil., 17(3), 144–150.
Yazdani, N., Eddy, S., and Cai, C. S. (2000). “Effect of bearing pads on precast prestressed concrete bridges.” J. Bridge Eng., 5(3), 224–232.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 14 • Issue 5 • September 2009
Pages: 319 - 326
Copyright
© 2009 ASCE.
History
Received: May 8, 2008
Accepted: Sep 17, 2008
Published online: Feb 25, 2009
Published in print: Sep 2009
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.