TECHNICAL PAPERS
Mar 1, 1986

Design of a Cable‐Stayed Steel Composite Bridge

Publication: Journal of Structural Engineering
Volume 112, Issue 3

Abstract

The design and proposed construction method for the cable‐stayed steel alternate of the Sunshine Skyway Bridge across Tampa Bay, FL, is outlined in detail. For this alternate, the concept of a relatively new steel composite girder was used. The girder comprises a grid of welded steel plate girders and is topped by a concrete deck from precast slabs. The concrete towers with diamond‐shaped box girder legs are connected to the girder by parallel wire or strand cables. The aerodynamic stability of the girder is greatly enhanced by the cables converging from the ouside of the girder to the tower tops, thus creating a stiff space truss. Although this design lost to the concrete alternate by the small margin of 4%, the concept has gained widespread acceptance. In subsequent competitive biddings, cable‐stayed composite bridges proved to be considerably more economical than concrete or all‐steel options. In the future development of cable‐stayed bridges, designs with composite girders, concrete towers, and parallel strand cables will play an important role.

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References

1.
Andrä, W., and Saul, R., “Tests with Parallel Wire and Strand Cables for the Mannheim North Bridge and the Tent Roof in Munich,” (in German) Die Bantechnik, Vol. 51, 1974, pp. 289–298, 332–340, 371–373.
2.
Brockenbrough, R. L., and Johnston, B. G., USS Steel Design Manual, United States Steel Corporation, Pittsburg, PA, 1981.
3.
Davenport, A. G., and King, J. P. C., “A Study of Wind Effects for the Sunshine Skyway Bridge, Steel Alternate,” BLWT‐SS25‐1982, The Univ. of Western Ontario, London, Canada, 1982.
4.
Leonhardt, F., Zellner, W., and Saul, R., “Two Cable‐Stayed Bridges for Roadway and Railway Traffic Across the Rio Paraná, Argentina,” (in German) Der Stahlbau, Vol. 48, 1979, pp. 225–236, 272–277.
5.
Leonhardt, F., Zellner, W., and Svensson, H., “The Prestressed Cable‐Stayed Concrete Bridge Across the Columbia River Between Pasco and Kennewick, WA, USA,” (in German) Beton‐und Stahlbeton, 1980, pp. 29–36, 64–70, 90–94.
6.
Podolny, W., and Scalzi, J. B., Construction and Design of Cable‐Stayed Bridges, John Wiley and Sons, New York, 1976.
7.
Saul, R., and Svensson, H., “On the Treatment of the Loading Permanent Loads in the Ultimate Limit State of Cable‐Stayed Bridges,” (in German) Der Bauingenieur, Vol. 58, 1983, pp. 329–335.

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Published In

Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 112Issue 3March 1986
Pages: 489 - 504

History

Published online: Mar 1, 1986
Published in print: Mar 1986

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Authors

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Holger S. Svensson
Mgr., U.S. Proj., Leonhardt, Andra und Partner, Consulting Engineers GmbH, Stuttgart, W. Germany
Ben G. Christopher
Vice Pres., Greiner Engineering Sciences, Inc., Tampa, FL 33630
Reiner Saul, Members, ASCE
Supervising Engr., Leonhardt, Andra und Partner, Consulting Engineers GmbH, Stuttgart, W. Germany

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