Wind fin plate for improving pneumatic performance of bridge

A technology of aerodynamic performance and fins, which is applied in bridges, bridge parts, bridge construction, etc., can solve the problems of not seeing the main girder web or bridge tower wall, so as to improve the flutter safety reserve and improve the flutter stability performance, and the effect of improving galloping stability

Inactive Publication Date: 2010-11-24
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are a series of various measures that can improve the aerodynamic performance of bridges at home and abroad, there is no similar report similar to the present invention installed on the girder web or bridge tower wall.

Method used

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  • Wind fin plate for improving pneumatic performance of bridge
  • Wind fin plate for improving pneumatic performance of bridge
  • Wind fin plate for improving pneumatic performance of bridge

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the embodiments shown in the drawings.

[0033] The wind fin board for improving the aerodynamic performance of the bridge of the present invention designs a wind fin board 1, which is specifically installed on the auxiliary structure of the main structure, and is a board installed on the auxiliary structure at a certain angle. In the actual design process, since the main structure is generally a long member in a certain direction, the wind fin plate 1 can be designed with a constant cross-section along the extension direction of the main structure. Or it can be partially installed on the main structure, please refer to figure 2 , Where (a) is the full-length installation, (b) is the partial installation.

[0034] Such as image 3 As shown, the wind fin plate 1 and the auxiliary structure of the main structure can be connected in the following ways: welding; high-strength bolt riveting, where (a) is w...

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Abstract

The invention discloses a wind fin plate for improving the pneumatic performance of a bridge. The wind fin plate is arranged on an accessory structure of a main structure at a certain included angle; the wind fin plate can be designed in an equal section along the extending direction of the main structure or is divided into a plurality of sections to be arranged on the main structure at intervals; the main structure can be a girder of the bridge and the accessory structure can be a web plate of the bridge, wherein the girder of the bridge is a steel box girder or concrete box girder, and the web plate is a straight web plate or an inclined web plate; and the main structure also can be a bridge tower and the accessory structure also can be a tower column wall plate. The wind fin plate can greatly improve the pneumatic performance of the bridge, improve flutter stability and galloping stability, and effectively reduce or inhibit vortex-induced vibration so as to improve the wind resistance of the bridge; and the wind fin plate can be widely applied to members such as girders and bridge towers of bridges.

Description

Technical field [0001] The invention belongs to the field of bridge engineering, and in particular relates to a wind fin plate for improving the aerodynamic performance of the bridge. Background technique [0002] Measures to improve bridge aerodynamics can effectively break large-scale separated flow vortices, thereby effectively suppressing unfavorable vortex vibrations, or improving the stability of gallop and flutter. The application of this aerodynamic measure may increase the wind load of the structure, so it can be considered through physical wind tunnel test or numerical wind tunnel test for specific situations. At present, although there are a series of various measures to improve the aerodynamic performance of bridges both domestically and internationally, there are no similar reports of installation on the main girder webs or bridge tower wall plates similar to the present invention. Summary of the invention [0003] The purpose of the present invention is to provide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00E01D19/14E01D2/04E04B1/98
Inventor 马如进王达磊艾辉林胡晓红
Owner TONGJI UNIV
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