Comparison of time domain techniques for the evaluation of the response and the stability in long span suspension bridges

Authors:
Francesco Petrini;Fabio Giuliano;Franco Bontempi
Affiliations:
Department of Civil Engineering, University "La Sapienza", Via Eudossiana 18, 00184 Rome, Italy;Department of Structural Mechanics, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy;Department of Civil Engineering, University "La Sapienza", Via Eudossiana 18, 00184 Rome, Italy
Venue:
Computers and Structures
Year:
2007

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Abstract

During the last decades, several studies on suspension bridges under wind actions have been developed in civil engineering and many techniques have been used to approach this structural problem both in time and frequency domain. In this paper, four types of time domain techniques to evaluate the response and the stability of a long span suspension bridge are implemented: nonaeroelastic, steady, quasi steady, modified quasi steady. These techniques are compared considering both nonturbulent and turbulent flow wind modelling. The results show consistent differences both in the amplitude of the response and in the value of critical wind velocity.