A quasi-secant continuous model for the analysis of long-span cable-stayed bridges

作者：Vairo Giuseppe^*

来源：Meccanica, 2008, 43(2): 237-250.

DOI：10.1007/s11012-008-9125-7

• long-span cable-stayed bridges
• cable-structure interaction
• singular perturbation technique
• non-linear analysis
• structural mechanics

In this paper a non-linear continuous model for the statical analysis of long-span cable-stayed bridges with fan scheme and H-shaped towers is proposed. This model is based on a quasi-secant large-displacement formulation of the stays-deck interaction and involves an Euler-Bernoulli/De Saint Venant model for the girder. An approximate closed-form solution of the statical problem, in which flexural and torsional terms are coupled, is obtained by means of a perturbative technique and according to the prevailing "truss-like" structural behavior. Results for some study-cases are compared with those relevant to both classical models and numerical solutions, proving effectiveness and applicability of the proposed model.

• 出版日期2008-4