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Meccanica

, Volume 20, Issue 4, pp 303–313 | Cite as

Nonlinear behaviour of long-span cable-stayed bridges

  • Domenico Bruno
  • Antonio Grimaldi
Article

Summary

In this paper the nonlinear behaviour of long-span cable-stayed bridges is analyzed. Two different structural models are presented. The first is obtained by assuming a continuous distribution of the stays along the deck, the second one is a discrete model which accounts for the actual stays spacing. Some numerical results are presented.

Keywords

Mechanical Engineer Civil Engineer Discrete Model Nonlinear Behaviour Continuous Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

List of Symbols

E

Young modulus

Es*

Dischinger's secant modulus

Et*

Dischinger's tangent modulus

g

dead load

p

design live load

λ

live load parameter

I

girder inertia

K

towers stiffness

ε

dimensionless girder stiffness parameter

L

central span length

lateral span length

H

tower height

Δ

stays spacing

a

dimensionless bridge parameter

σ0

anchor stays stress

σa

allowable stress of the stays

δ

midspan deflection

ν

girder's vertical displacements

ω

girder's horizontal displacement

u

pylon tops horizontal displacement

Sommario

In questo lavoro viene analizzato il comportamento non lineare dei ponti strallati di grande luce sotto l'azione dei carichi accidentali. Nell'analisi vengono utilizzati due modelli strutturali; il primo, di tipo continuo, si basa sull'ipotesi di uniforme distribuzione della strallatura lungo la travata, il secondo, di tipo discreto, tiene conto invece dell'effettiva spaziatura degli stralli. Vengono infine presentati i risultati numerici ottenuti.

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References

  1. [1]
    Leonhardt F., Zellner W., Cable-stayed bridges,IABSE Surveys S-13/80, May 1980.Google Scholar
  2. [2]
    Troitsky M.S., Cable-stayed bridges,Crosby Lockwood Staples, London 1977.Google Scholar
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    De Miranda F.,I ponti strallati di grande luce, Ed. Cremonese, Milano 1980.Google Scholar
  4. [4]
    De Miranda F., Grimaldi A., Maceri F., Como M., Basic problems in long-span cable-stayed bridges,Internal report, Department of Structures, University of Calabria, September 1979.Google Scholar
  5. [5]
    Cafarella F., Sulla statica in campo non lineare dei ponti strallati a grande numero di stralli,Costruzioni Metalliche, n. 1, 1981.Google Scholar
  6. [6]
    Rajaraman A., Loganathau K., Raman N.V., Nonlinear Analysis of cable-stayed bridges,IABSE Proceedings P-37/80, November 1980.Google Scholar
  7. [7]
    Riks E., An incremental approach to the solution of snapping and buckling problems in elastic stability,14th IUTAM Congress, Delft, The Netherlands, August 1976.Google Scholar
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    Aristodemo M., Bruno D., Casciaro R., Un metodo iterativo per l'analisi al passo di strutture elasto-plastiche,V Congresso AIMETA, Palermo 1980.Google Scholar

Copyright information

© Pitagora Editrice Bologna 1985

Authors and Affiliations

  • Domenico Bruno
    • 1
  • Antonio Grimaldi
    • 2
  1. 1.Dipartimento di StruttureUniversità della CalabriaItalia
  2. 2.Facoltà di IngegneriaII Università di RomaItalia

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