Collapse Load Analysis of Continuous, Posttensioned Voided Slab Bridge Models
Publication: Journal of Structural Engineering
Volume 119, Issue 6
Abstract
Two voided slab bridge models, one straight and the other curved in plan, were tested to failure under simulated American Assoc. of State Highway and Transportation Officials (AASHTO) truck loading. Each model was quarterscale, two‐lane, continuous, and longitudinally and transversely posttensioned, with two equal spans of 8.0 m (26.27 ft) measured along the centerline, and were 2.0 m (6 ft 7 in.) wide. The curved bridge subtended an arc of 40° on a radius of curvature of 22.92 m (75.2 ft). The failure load was obtained for symmetrical placement of four simulated AASHTO trucks, one in each lane and each span. The observed failure mode in both bridge models was similar to that of a continuous beam, i.e., initiated by the formation of successive plastic hinges at the support and at the maximum positive moment location, respectively. The test results are compared against predictions from one‐dimensional beam analysis and two‐dimensional grillage analysis based on limit analysis using interaction relations for bending, shear, and torsion as failure criterion. Both analyses predict failure loads and failure modes that are in reasonable agreement, with test results from the one‐dimensional analysis providing a somewhat higher estimate.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
ANSYS 4.2, Swanson Analysis Systems, Inc., Houston, Pa.
2.
Bakht, B., and Jaeger, L. (1985). Bridge analysis simplified. McGraw‐Hill, New York, N.Y.
3.
Campbell, T. I., Lee, E. Y. K., and Chan, K. S. (1980). “Strength of continuous horizontally curved post‐tensioned beams.” PCI J., 25(4), 118–145.
4.
Chen, W. F., and Han, D. J. (1988). Plasticity for structural engineers. Springer‐Verlag, Berlin.
5.
Cohn, M. Z., and Frostig, Y. (1983). “Inelastic behavior of continuous prestressed concrete beams.” J. Struct. Div., ASCE, New York, N.Y., 109(10), 2292–2309.
6.
Das, P. C., and Sen, R. (1979). “Reserve strength of bridge decks—A preliminary investigation.” Proc., Part 2, Inst. of Civ. Engrs., London, England.
7.
Hambly, E. C. (1976). Bridge deck behaviour. Chapman and Hall, London, England.
8.
Hsu, T. C. (1968). “Torsion of structural concrete—Behavior of reinforced concrete rectangular members.” Torsion of structural concrete; ACI publication SP‐18, Am. Concrete Inst., Detroit, Mich., 261–306.
9.
Jaeger, L. G., and Bakht, B. (1982). “The grillage analogy in bridge analysis.” Can. J. Civ. Engrg., 9(2), 224–235.
10.
Lee, E. Y. K. (1978). “Behaviour of curved, continuous, prestressed concrete beams loaded to collapse,” MS thesis, Queen's University, Kingston, Ontario, Canada.
11.
Mari, A. R. (1984). “Nonlinear, geometric, material and time dependent analysis of three dimensional reinforced and prestressed concrete frames.” Report no. UCB/SESM‐84/12, Dept. of Civ. Engrg., Univ. of California, Berkeley.
12.
Mattock, A. H. (1965). “The rotational capacity of hinging regions in reinforced concrete beams.” Flexural mechanics of reinforced concrete, Proc., ASCE‐ACI Int. Symp., ASCE, New York, N.Y., 143–180.
13.
Naaman, A. (1982). Prestressed concrete analysis and design fundamentals. McGraw‐Hill, New York, N.Y.
14.
Naaman, A., Harajli, M., and Wight, K. (1986). “Analysis of ductility in partially prestressed concrete flexural members.” PCI J., 31(3), 64–87.
15.
Nilson, A. (1986). Design of prestressed concrete structures. John‐Wiley, New York, N.Y.
16.
Park, R., and Paulay, T. (1975). Reinforced concrete structures. John Wiley, New York, N.Y.
17.
Sawko, F. (1964). “Analysis of grillages in the elasto‐plastic range.” Civ. Engrg. Publ. Wks. Rev., 59(695), 737–739.
18.
Sen, R., Gerges, A., and Sun, X. (1990). “Analysis of prestress effects in continuous, curved, prestress girders.” Developments in short and medium span bridge engineering '90, B. Bakht, R. Dorton, and L. Jaeger, eds., Can. Society for Civ. Engrs., Montreal, Quebec, Canada, 165–176.
19.
Sen, R., Issa, M., and Oline, L. (1990). “Analytical and experimental evaluation of stiffness parameters of voided concrete slab bridges.” Final rep. state project no. 99700‐7441‐010, Florida Dept. of Transp., Tallahassee, Fla.
20.
Sen, R., and Hodge, D. (1989). “Strength design of longitudinally and transversely posttensioned voided slab bridges.” Final rep., state project no. 997002‐7369‐119, Vol. 2, Florida Dept. of Transp., Tallahassee, Fla.
21.
Sen, R., and Hodge, D. (1990). “Ultimate capacity of biaxially prestressed members.” J. Struct. Engrg., ASCE, 116(11), 3020–3038.
22.
STAAD‐III; Revision 10.1. (1987). Res. Engrs., Inc., Marlton, N.J.
23.
Standard specifications for highway bridges. (1989). American Association of State Highway and Transportation Officials (AASHTO), Washington, D.C.
24.
West, R. (1973). “The use of grillage analogy for the analysis of slab and pseudoslab bridge decks.” Res. rep. 21, Cement and Concrete Assoc., Slough, U.K.
Information & Authors
Information
Published In
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Oct 30, 1991
Published online: Jun 1, 1993
Published in print: Jun 1993
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.