Title: Design and Construction of Spliced 1-Girder Bridges
Date: July-August, 1992
Volume: 37
Issue: 4
Page number: 114-122
Author(s): Ahmad M. Abdei-Karim, Maher K. Tadros
https://doi.org/10.15554/pcij.07011992.114.122
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Abstract
Precast, prestressed concrete I-girders are more economical than other bridge systems, if the span length allows them to be used in full span segments, i.e., for spans up to about 150ft (46 m). Many designers are unfamiliar with the possibility of splicing I-girder segments to reach longer spans in the range of 150 to 280ft (46 to 85 m) and therefore rule out this potentially economical alternative. The following paper provides a summary of a state-of-the-art report on the design and construction of spliced I-girder bridges, which are quickly gaining popularity in the United States and Canada. The report was prepared by the University of Nebraska on behalf of the Bridges and Bridge Producers Committees of the PCI. The full report is available as a separate PCI document. The report contains information on over 40 bridge projects and gives design, production and erection considerations, and other details for many of these bridges. It also includes a fully worked example of preliminary design of a 350ft (106m) long overpass, made of two equal spans. The example calculations are done by a handheld calculator without need for any specialized computer facility. Also included is reference to a PC-based computer software for detailed time-dependent analysis of this bridge type.
References
1. Abdel-Karim, A. M., and Tadros, M. K., "State-of-the-Art of Precast/Prestressed Concrete Spliced Girder Bridges," Report prepared by the University of Nebraska-Lincoln for the PCI Bridges and Bridge Producers Committees, Precast/ Prestressed Concrete Institute, Chicago, IL, 1992.
2. Tadros, M. K., Ghali, A., and Dilger, W. H., "Time-Dependent Analysis of Composite Frames," Journal of Structural Division, American Society of Civil Engineers, V. 103, No. ST4, April1977, pp. 871-884.
3. Abdel-Karim, A. M., and Tadros, M. K., "Computer Analysis of Spliced-Girder Bridges," accepted for publication in ACI Structural Journal, September 1991.
4. Peterson, D. N., and Tadros, M. K., "Simplified Flexural Design of Partially Prestressed Concrete Members," PCI JOURNAL, V. 30, No. 3, May-June 1985, pp. 50-69.
5. Tadros, M. K., "Expedient Service Load Analysis of Cracked Prestressed Concrete Beams," PCI JOURNAL, V. 27, No.6, November-December 1982, pp. 86-111. See also discussion of the same paper by J. Bachmann, E. W. Bennett, D. E. Branson, T. Br~ndum-Nielsen,. A. S. G. Bruggeling, S. E. Moustafa, A. H. Nilson, A. S. Prasada Rao and S. Natarajan, G. S. Ramaswamy, A. Fattah Shaikh, and Author, PCI JOURNAL, V. 28, No. 6, November-December 1983, pp. 137-158.