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A sound barrier device and method for suppressing vortex-induced resonance of a main girder of a long-span bridge

A technology of vortex-induced resonance and sound barrier, applied in the direction of noise absorption devices, bridges, bridge construction, etc., can solve the problems of wind-induced vibration of the main girder, change of the aerodynamic shape of the main girder section, etc.

Active Publication Date: 2022-05-17
HUNAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The installation of traditional sound barriers on long-span bridges may change the aerodynamic shape of the main girder section, resulting in obvious wind-induced vibration of the main girder

Method used

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  • A sound barrier device and method for suppressing vortex-induced resonance of a main girder of a long-span bridge
  • A sound barrier device and method for suppressing vortex-induced resonance of a main girder of a long-span bridge
  • A sound barrier device and method for suppressing vortex-induced resonance of a main girder of a long-span bridge

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0037] see figure 1 and figure 2 , figure 1A schematic cross-sectional view of a sound barrier device for suppressing vortex-induced resonance of a main girder of a long-span bridge provided in an embodiment of the present application; figure 2 A schematic front view of a sound barrier device for suppressing vortex-induced resonance of a main girder of a long-span bridge provided in an embodiment of the present application.

[0038] In this embodiment, the long-span bridge 10 extends along a first direction, and a railing foundation stone 12 is laid on the wing end 11 of the main girder along the first direction. The railing foundation stone 12 has opposite first and second sides, and the first side To the inside of the long-span bridge 10 , the second side faces to the outside of the long-span...

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Abstract

The application provides a sound barrier device and method for suppressing vortex-induced resonance of the main girder of a long-span bridge. The sound barrier device includes a sound barrier base and a sound barrier body. The outside of the bridge is inclined. The sound barrier device (which can be understood as a broken-line sound barrier) changes the aerodynamic force on the main beam section, weakens the strength of the vortex shedding in the wake area of ​​the main beam section, and thus successfully suppresses the vortex vibration response of the main beam. The technical problem of eddy vibration will occur in the main beam section of the linear sound barrier. Moreover, the sound barrier device provided by this solution can not only reduce noise and protect the environment, but also suppress the vortex-induced resonance of the main beam section. And, the sound barrier device of this scheme does not need to add additional pneumatic control measures, which is more economical and applicable.

Description

technical field [0001] The present application relates to the technical field of bridge engineering, in particular, to a sound barrier device and method for suppressing vortex-induced resonance of a main girder of a long-span bridge. Background technique [0002] Noise is one of the biggest problems affecting people's modern life. In engineering practice, in order to reduce the impact of urban traffic noise on the surrounding environment, sound barriers are usually installed on both sides (or one side) of urban roads or viaducts. The research and application of traditional sound barriers are very mature. [0003] With the further advancement of ecological civilization construction, the requirements for environmental protection in the construction of transportation infrastructure are also more stringent. Some long-span bridges must consider the impact of traffic noise on surrounding organisms when passing through ecologically sensitive areas. For example, when the Jiangmao s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/00E01D19/10E01F8/00
CPCE01D19/00E01D19/103E01F8/00Y02A30/30
Inventor 刘志文李书琼陈政清季建东李保俊
Owner HUNAN UNIV