MODELLING OF IMPACT OF VIBRATIONS OF CABLES ON DYNAMIC BEHAVIOUR OF CABLE-STAYED BRIDGES: DUBROVNIK BRIDGE CASE STUDY (CROSBI ID 547009)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Čaušević, Mehmed
engleski
MODELLING OF IMPACT OF VIBRATIONS OF CABLES ON DYNAMIC BEHAVIOUR OF CABLE-STAYED BRIDGES: DUBROVNIK BRIDGE CASE STUDY
After opening of Dubrovnik cable – stayed bridge violent vibrations of bridge deck and pylon in strong Bora wind were observed, caused by violent vibrations of bridge cables. This paper analysed this phenomenon, i. e. causes for violent vibrations of cables and its impact on the overall dynamic behaviour of the bridge. The vibration of a massive cable which is connected to the vibrating cable - stayed bridge deck and pylon is presented firstly. Equations describing change of cable's force and its eigenvalues due to cables undamped and damped vibrations are also derived. It has been shown that models substituting the behaviour of massive bridge cable and its impact on the dynamic properties of the overall cable - stayed bridge can be implemented. In this analysis the following has been concluded: The response of cable - stayed bridge systems to a general type of external dynamic loading could be disturbed by the vibration of cables, especially when the eigenfrequencies of the bridge structure approach the vicinity of the eigenfrequency of any of the cable - stayed bridge cable. In this case cable's stiffness will be suddenly reduced and it starts vibrating in large amplitudes. At the end the measures for the bridge rehabilitation are presented in a way of suppressing of cable's vibrations by dampers of Maurer type.
Cable; Cable - stayed bridge; Damping; Eigenvalues; Mathematical Modeling; Nonlinear Vibrations; Dampers
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Podaci o prilogu
1-6.
2009.
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objavljeno
978-9948-427-12-4
Podaci o matičnoj publikaciji
Proceedings of the Third International Conference on Modeling, Simulation and Applied Optimization (ICMSAO'09)
Ismail Kucuk, et. al.
Sharjah: American University of Sharjah
Podaci o skupu
The Third International Conference on Modeling, Simulation and Applied Optimization (ICMSAO'09)
predavanje
20.01.2009-22.01.2009
Sharjah, Ujedinjeni Arapski Emirati