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. © Springer-Vorlag Borlin Heidelberg 2012.
CITATION STYLE
Vairo, G., & Montassar, S. (2012). Mechanical modelling of stays under thermal loads. Lecture Notes in Applied and Computational Mechanics, 61, 481–498. https://doi.org/10.1007/978-3-642-24638-8_34
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