Heaving plate device for restraining flutter of bridge

A heave slab and bridge technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of reducing chattering response, increasing bridge system damping, and low flutter control efficiency, and achieves convenient operation, simple device, and chattering Good vibration control effect

Pending Publication Date: 2021-03-09
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mechanical measures are mainly to increase the damping of the bridge system, which can effectively control the eddy vibration and reduce the buffeting response, but the flutter control efficiency is low, so mechanical measures are generally not used to control bridge flutter

Method used

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  • Heaving plate device for restraining flutter of bridge

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Embodiment Construction

[0009] Below in conjunction with technical scheme and accompanying drawing, describe the specific embodiment of the present invention in detail, but the embodiment of the present invention is not limited thereto:

[0010] Such as figure 1 As shown, a heave plate device for suppressing bridge flutter includes a heave plate 1, a suspension ring 2, a rope 3, a hole 4, and an opening and closing plate 5; the heave plate 1 has sufficient strength and rigidity, and can generally be It is manufactured by welding thin metal plates such as galvanized steel plates and aluminum plates with vertical and horizontal metal stiffeners, and the self-weight and engineering cost of the heave plate 1 can be reduced as much as possible under the condition of ensuring the strength and stiffness of the heave plate 1; A number of suspension rings 2; the lower end of the rope 3 with sufficient strength and rigidity is connected to the suspension ring 2, and the upper end is connected to the main beam;...

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Abstract

The invention belongs to the technical field of bridge wind-induced vibration control, and provides a heaving plate device for restraining flutter of a bridge. A heaving plate immersed and suspended in water is suspended on a main beam of the bridge through a long rope. When the bridge vibrates drastically due to wind, the heaving plate in water can be driven to move up and down, the heaving plateand the bridge are prevented from vibrating due to strong additional mass and additional damping generated by the water, and finally flutter of the bridge is avoided or the flutter critical wind speed is increased drastically. A plurality of holes are formed in the heaving plate, and an opening and closing plate is arranged to further improve the bridge flutter control effect. The device has theadvantages of being simple, convenient to operate, good in control effect, light in weight, low in cost and high in practicability. Te heaving plate is arranged at the bottom of the main beam in a non-working state, so that the attractiveness of the bridge is not influenced, and navigation under the bridge is not influenced. When the heaving plate is in a working state, the heaving plate meets strong wind of sixteen or more levels in dozens of years, and navigation under the bridge is avoided.

Description

technical field [0001] The invention belongs to the technical field of bridge wind-induced vibration control, and relates to a heave plate device for suppressing bridge flutter. Background technique [0002] At present, dozens of long-span sea-crossing bridges have been built around the world, and more and longer sea-crossing bridge projects will be built in the future. The sea wind speed is high and lasts for a long time, so the problem of bridge wind resistance is very prominent. Wind-induced large-scale limit cycle vibration and divergent flutter of long-span bridges need to be avoided, otherwise it may cause collapse and damage. Mainly through structural measures, pneumatic measures and mechanical measures to control bridge flutter or improve bridge flutter performance. Structural measures include increasing the width of the bridge deck, increasing the mass and moment of inertia of the main girder, and improving structural rigidity, etc., and the cost is relatively hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00
CPCE01D19/00
Inventor 许福友毛涛涛安万博
Owner DALIAN UNIV OF TECH
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