Rating and Preliminary Analysis of Suspension Bridges
Publication: Journal of Structural Engineering
Volume 119, Issue 9
Abstract
Formulas for different loading cases of suspension bridges are presented. Although theoretically not correct, the principle of superposition can be used to get practical answers that are sufficiently accurate for determining stresses, deflections, and rotation in a stiffening truss or girder. The horizontal cable tension is computed using the more accurate method by Steinman or the approximate method by Tsien. With known, the differential equation for the various loadings can be resolved, and the results of such computations are shown in this paper. A numerical example is worked out to clarify the mathematical procedure. The data are from the Angostura suspension bridge over the Orinoco River in Venezuela.
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References
1.
Johnson, J. B., Bryan, C. W., and Turneaure, I. E. (1929). Modern frame structures; part II, 10th Ed., John Wiley & Sons, Inc., New York, N.Y.
2.
Steinman, D. B. (1934). “A general deflection theory for suspension bridges.” Proc., ASCE, New York, N.Y.
3.
Steinman, D. B. (1953). A practical treatise on suspension bridges, 2nd Ed., John Wiley & Sons, Inc., New York, N.Y.
4.
Tsien, L.‐H. (1949). “A simplified method of analyzing suspension bridges.” Trans., ASCE, Vol. 114.
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Copyright © 1993 American Society of Civil Engineers.
History
Received: Dec 19, 1991
Published online: Sep 1, 1993
Published in print: Sep 1993
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