State of Practice for Positive Moment Connections in Prestressed Concrete Girders Made Continuous
Publication: Journal of Bridge Engineering
Volume 8, Issue 5
Abstract
Precast bridges are often constructed as single span for dead load, but continuous for live load. A diaphragm connection is provided for negative moment continuity. However, the connection may also be subjected to positive moments due to time-dependent effects. Because these moments may be large enough to damage the diaphragm or even the girders, a positive moment connection is often provided. This paper reports on a study to determine the types of positive moment connections used across the country and to identify potential problems with these types of connections. A questionnaire survey was conducted to assess the state of practice for precast prestressed concrete bridges made continuous. The survey provides valuable information on this type of bridge and updates a previous survey on this subject.
Get full access to this article
View all available purchase options and get full access to this article.
References
Abdalla, O. A., Ramirez, J. A., and Lee, R. H. (1993). “Strand debonding in pretensioned beams, precast prestressed concrete bridge girders with debonded strands: continuity issues.” Rep. No. FHWA/INDOT/JHRP-92-24, Joint Highway Research Project, Indiana Department of Transportation/Purdue University, West Lafayette, Ind.
Clark, L. A., and Sugie, I.(1997). “Serviceability limit state aspects of continuous bridges using precast concrete beams.” Struct. Eng., 75(11), 185–190.
Freyermuth, C. L.(1969). “Design of continuous highway bridges with precast, prestressed concrete girders.” J. Prestressed Concr. Inst., 14(2), 14–39.
Ma, Z., Huo, X., Tadros, M. K., and Baishya, M.(1998). “Restraint moments in precast/prestressed concrete continuous bridges.” PCI J., 43(6), 40–56.
Mattock, A. H., and Kaar, P. H.(1960). “Precast-prestressed concrete bridges. III: Further tests of continuous girders.” J. PCA Res. Devel. Lab., 2(3), 51–78.
Mirmiran, A., Kulkarni, S., Castrodale, R., Miller, R., and Hastak, M.(2001a). “Nonlinear continuity analysis of precast prestressed girders with cast-in-place decks and diaphragms.” PCI J., 46(5), 60–80.
Mirmiran, A., Kulkarni, S., Miller, R., Hastak, M., Shahrooz, B., and Castrodale, R. (2001b). “Positive moment cracking in the diaphragms of simple-span prestressed girders made continuous.” SP 204 on design and construction practices to mitigate cracking, E. Nawy, ed., American Concrete Institute, Detroit, 117–134.
Oesterle, R. G., Gilkin, J. D., and Larson, S. C. (1989). “Design of precast-prestressed bridge girders made continuous.” National Cooperative Highway Research Program Rep. No. 322, Transportation Research Board, Washington, D.C.
Salmons, J. R., and May, G. W. (1974). “Strand reinforcing for end connections of pretensioned I-beam bridges.” Interim Rep. No. 73-5B, Missouri Cooperative Highway Research Program, Missouri State Highway Department, Springfield, Mo.
Tadros, M. K., Ficenec, J. A., Einea, A., and Holdsworth, S.(1993). “A new technique to create continuity in prestressed concrete members.” PCI J., 38(5), 30–37.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 8 • Issue 5 • September 2003
Pages: 267 - 272
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Feb 13, 2002
Accepted: Jul 1, 2002
Published online: Aug 15, 2003
Published in print: Sep 2003
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.