Title :
Experimental flutter and buffet suppression of a sectional suspended-bridge
Author :
Xiaowei Zhao ; Gouder, Kevin ; Limebeer, David J. N. ; Graham, J. Michael R.
Author_Institution :
Sch. of Eng., Univ. of Warwick, Coventry, UK
Abstract :
This paper conducts flutter and buffet suppression of a section of a long-span bridge deck mounted elastically across a wind tunnel working section. The incident stream turbulence for buffet tests is generated by a standard biplanar grid. The bridge deck response in its two major degrees of freedom, heave and pitch. A mechanical flutter control system is developed which senses the vertical velocity of flap pivots and adjusts the leading and trailing-edge flap angles accordingly. The wind tunnel experiments show that the mechanical flutter control system can not only increase the critical flutter speed of the bridge deck but also can suppress the buffeting greatly.
Keywords :
bridges (structures); mechanical variables control; wind tunnels; buffet suppression; buffet tests; flap pivot vertical velocity sensing; incident stream turbulence generation; leading flap angle adjustment; long-span bridge deck; mechanical flutter control system; sectional suspended-bridge; standard biplanar grid; trailing-edge flap angle adjustment; wind tunnel working section; Aerodynamics; Bridges; Control systems; Force; Shafts; Springs; Wind speed;
Conference_Titel :
Decision and Control (CDC), 2014 IEEE 53rd Annual Conference on
Conference_Location :
Los Angeles, CA
Print_ISBN :
978-1-4799-7746-8
DOI :
10.1109/CDC.2014.7039883