A Damper Vibration Reduction System Used to Suppress Vertical Vibration of Bridge Main Girder
A vertical vibration and damping system technology, applied in bridges, bridge construction, bridge forms, etc., can solve the problems of not being able to adapt to the longitudinal deformation and torsional motion of stiffened beams, and achieve the effect of reducing multi-order vortex vibration responses
Active Publication Date: 2021-08-24
HUNAN UNIV +1
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Problems solved by technology
[0006] The purpose of the present invention is to provide a method for suppressing the vertical vibration of the main girder of the bridge in view of the problem that the energy dissipation device used for the vertical vortex vibration control of the stiffened girder of the suspension bridge cannot adapt to the longitudinal deformation and torsional movement of the stiffened girder in the prior art. The damper vibration reduction system
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Embodiment 1
[0038] like Figure 1-4 Shown, an embodiment of the present embodiment for suppressing the vertical vibration of the bridge girders vibration damper system, comprising a bridge pier column 23 and bridge girders 22, further comprising a torsion type upper bridge pier connected to the column 23 the damper 18, the torsional damper 18 is connected to a rotary shaft 18 driven by the output of the damping force of the torsion damper 24, the rotating connection shaft 24 has a rod 20, and the rotary shaft 24 is capable of a connecting rod 20 described later is rotated together with the rotation of the link 24 is one end of a shaft 20 remote from the hinge 21 there are two links, the two links 21 and 22 hinged to the bridge girders.
[0039] Further comprising a support platform 19, the supporting platform 19 is fixedly connected at one end (pouring may be integrally connected with the connecting member may be removable such as a bolt fixedly connected) on the bridge pier tower 23, the othe...
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The invention belongs to the field of vibration control, and specifically relates to a damper vibration reduction system for suppressing vertical vibration of a bridge main girder, which includes a bridge pier tower and a bridge main girder, and also includes a torsional damper connected to the bridge pier tower, The torsional damper is connected with a rotating shaft for driving the torsional damper to output damping force, the rotating shaft is connected with a connecting rod one, and the rotating shaft can rotate together with the connecting rod one, and the connecting rod one The end of the first rod away from the rotation axis is hinged with the second connecting rod, the second connecting rod is hinged with the main girder of the bridge, and the first connecting rod is arranged longitudinally along the main girder of the bridge. A damper vibration reduction system for suppressing the vertical vibration of the main girder of the bridge can be used for the vertical vortex vibration control of the stiffened girder of the suspension bridge, and can adapt to the longitudinal deformation and torsional movement of the stiffened girder.
Description
Technical field [0001] The present invention belongs to the field of vibration control, particularly relates to a vibration damper system for suppressing the vertical vibration bridge girders. Background technique [0002] Currently, span suspension bridges vertical bending mode dense, low inherent damping ratio, the natural frequency is 0.1 ~ 0.7Hz vertical bending mode may occur vertical vortex shedding, the corresponding start-up wind speed of 3.5 ~ 23m / s. Increase in wind speed, a plurality of reinforcing beams have vibration modes occur vortex, the wind speed corresponding to a specific mode of a vortex shedding known as multi-stage vortex shedding phenomena. For example, the first half of 2020, my country's Wuhan Parrot Island Bridge, Guangdong Humen Bridge and Zhoushan Xihoumen Bridge has appeared in amplitude larger multi-modal vortex shedding, affecting the normal operation of the bridge, causing widespread social concern. Suspension higher mode amplitude is generally ...
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IPC IPC(8): F16F15/02E01D19/00E01D19/02E01D11/02
CPCE01D11/02E01D19/00E01D19/02F16F15/02
Inventor 华旭刚黄智文陈政清张弘毅牛华伟陈谨林万田保刘高徐源庆王忠彬台玉吉
Owner HUNAN UNIV