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Mechanics, Models and Methods in Civil Engineering pp 481–498Cite as

Mechanical Modelling of Stays under Thermal Loads

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Part of the book series: Lecture Notes in Applied and Computational Mechanics ((LNACM,volume 61))

Abstract

This paper aims at investigating the effects of thermal loads on the elastic response of cables in cable-stayed structures. Starting from a catenary-based approach, an analytical model for evaluating the cable’s stress variation induced by a thermal load linearly distributed along the stay chord is proposed, accounting for sag effect as well as for the stiffness of the stay-supported structure. Moreover, the Dischinger’s equivalent modulus formulation is generalized to include inelastic thermal contributions, deducing generalized Dischinger-type secant and tangent equivalent elastic moduli, and refining the quasi-secant theory recently proposed. The influence of temperature variations on the mechanical response of typical stays employed in long-span cable-stayed bridges is highlighted through several numerical applications, confirming soundness and effectiveness of the proposed formulation.

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Author information

Authors and Affiliations

  1. Department of Civil Engineering, University of Rome ” Tor Vergata”, via del Politecnico 1, 00133, Rome, Italy

    Giuseppe Vairo

  2. Civil Engineering Laboratory, Tunis National School of Engineering, BP 37, Le Belvédère 1002, Tunis, Tunisia

    Sami Montassar

Authors
  1. Giuseppe Vairo
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  2. Sami Montassar
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Editors and Affiliations

  1. Department of Civil Engineering, University of Rome “Tor Vergata”, via del Politecnico 1, 00133, Rome, Italy

    Michel Frémond  & Franco Maceri  & 

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Vairo, G., Montassar, S. (2012). Mechanical Modelling of Stays under Thermal Loads. In: Frémond, M., Maceri, F. (eds) Mechanics, Models and Methods in Civil Engineering. Lecture Notes in Applied and Computational Mechanics, vol 61. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24638-8_34

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  • DOI: https://doi.org/10.1007/978-3-642-24638-8_34

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-24637-1

  • Online ISBN: 978-3-642-24638-8

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