P. Omenzetter et al., Suppression of wind-induced instabilities of a long span bridge by a passive deck-flaps control system - Part II: Numerical simulations, J WIND ENG, 87(1), 2000, pp. 81-91
Citations number
2
Categorie Soggetti
Mechanical Engineering
Journal title
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
The analysis of the two passive aerodynamic control systems for suppression
of the wind induced instabilities of a very long span bridge, proposed in
Part I of this study, is presented in this paper. The optimal passive contr
ol system configurations are searched on the basis of the proposed performa
nce indices for the system with asymmetric and symmetric cable connection,
respectively. The control system with asymmetric cable connection provides
large damping and a very high degree of stability in the considered range o
f wind speed, but requires flaps of large width and large forces to control
their motion. The control system with symmetric cable connection provides
limited improvement in critical wind speed, but uses small flaps and small
control forces. (C) 2000 Elsevier Science Ltd. All rights reserved.