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A Central Stabilizing Mechanism for Improving Bridge Flutter Stability

A stable and central technology, applied in bridges, bridge construction, bridge parts, etc., can solve the problems of poor universality, inability to adjust, poor technical effect, etc., and achieve the effect of improving lifespan, reducing risks, and expanding scalable characteristics

Active Publication Date: 2019-05-17
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a central stabilizing mechanism for improving the flutter stability of the bridge, which solves the poor universality of the aerodynamic structure for improving the flutter stability in the existing bridge structures, and cannot be adjusted according to the wind direction. Changes are adjusted, the technical effect is poor, and the overall flutter stability of the bridge structure is significantly improved, the life of the bridge is improved, and the risk is reduced

Method used

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  • A Central Stabilizing Mechanism for Improving Bridge Flutter Stability
  • A Central Stabilizing Mechanism for Improving Bridge Flutter Stability
  • A Central Stabilizing Mechanism for Improving Bridge Flutter Stability

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0023] figure 2 and image 3 It is a segmental section view and a top view of the box girder. It is composed of a movable wing 11 located in the center of the top surface of the closed box girder 10 and a power device 15 located inside the closed box girder 10. Between the movable wing 11 and the closed box girder 10 They are connected by spaced brackets, which include a fixed part 12 connected to the closed box girder 10 and a telescopic part 13 connected to the movable wing 11 . The cent...

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Abstract

The invention discloses a central stabilizing mechanism capable of improving bridge flutter stability. The central stabilizing mechanism comprises a movable flange positioned at the center of a top face of a closed box beam, a power device positioned inside the closed box beam and an inhaul cable connecting the outer edge of the flange with the power device, a support is arranged between the flange and the box beam and comprises a fixed portion and an extensible portion, the fixed portion is fixedly connected with the box beam, the extensible portion is fixedly connected with the flange, and the inhaul cable is driven through the power device to control rotation of the flange. Posture of the flange is adjusted through the power device, so that the bridge flutter stability can be improved well; large-amplitude rotating angle of the flange and extensibility of the support greatly improve suitability of this pneumatic facility in the aspect of improving the bridge flutter stability.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to a central stabilizing mechanism capable of improving the flutter stability of bridges. Background technique [0002] A divergent torsional vibration will occur on the bridge at a certain wind speed, and this divergent vibration will eventually lead to the destruction of the bridge structure, which is called flutter. The wind speed at which the bridge begins to flutter is called the flutter critical wind speed. When the actual wind speed is less than this critical wind speed, the bridge structure will not flutter. At present, the method to improve the flutter stability of bridge structures is mainly to increase the critical wind speed of bridge flutter through certain measures, which are mainly divided into three categories: structural measures, that is, to increase the torsional stiffness of the bridge structure and reduce the mass moment of inertia , so as to increase the torsi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/00
CPCE01D19/00
Inventor 赵林李珂陈翰林葛耀君
Owner TONGJI UNIV
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