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Vibration-absorbing devices for rail transit bridges

A vibration damping device and rail transit technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of unsatisfactory use requirements, limited vibration damping effect, high cost, etc., and achieve compact structure, good integrity, and reduced vibration Effect

Active Publication Date: 2018-04-03
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing rail transit bridge vibration and noise reduction devices have limited vibration reduction effects, and usually have complex structures and high costs, which cannot meet the needs of use

Method used

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  • Vibration-absorbing devices for rail transit bridges

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Embodiment Construction

[0017] figure 1 It is a schematic diagram of the structure of the present invention, as shown in the figure: the rail transit bridge vibration damping device of the present embodiment includes a support 1 that cooperates with the bridge beam body and a vibration damping support mechanism that supports the support 1 and is used for vibration reduction;

[0018] The vibration-damping support mechanism includes an outer sleeve 2, a support sleeve 3 forming a vibration-damping support for the support 1, and a casing support assembly arranged in the outer sleeve 2 to form a floating support for the support sleeve 3. The support 1 includes a seat The main body 1-1 and the sliding rod body 1-2 connected with the seat body 1-1 and extending into the support sleeve 3 are slidingly fitted. The first shock absorber 4 for mobile vibration damping; as shown in the figure, the sliding rod body 1-2 is inserted into the support sleeve 3, and when the support 1 is vertically squeezed as a whol...

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Abstract

The invention discloses a vibration damping device for a rail transit bridge. The device comprises a support matched with a bridge body of the bridge and a vibration damping support mechanism for supporting the support and damping vibration, wherein the vibration damping support mechanism comprises an outer sleeve, a support sleeve and a sleeve body support component; the support comprises a support body and a sliding rod body; a first vibration damping piece for vertical movement vibration damping of the support is arranged between the sliding rod body and the support sleeve. Floating support to the whole support is formed by the vibration damping support mechanism, and the whole support is namely isolated from a bridge foundation (bridge pier or bridge abutment) to greatly reduce transmission of vibration from the bridge body of the bridge to the bridge foundation, so that vibration of surrounding buildings is reduced; in addition, when the support is squeezed by vertical displacement of the bridge, vertical impact force on the bridge can be buffered by the first vibration damping piece arranged in the support sleeve. The device is compact in structure and high in integrity, and each part is cooperatively matched to achieve the effects.

Description

technical field [0001] The invention relates to the technical field of bridge vibration reduction, in particular to a vibration reduction device for rail transit bridges. Background technique [0002] At present, seismic isolation, energy consumption and vibration reduction technologies have gradually attracted the attention of countries all over the world and are widely used in building structures and bridge structures. The most common types of existing bridge isolation systems are natural rubber bearings and lead rubber bearings. Bridge rubber bearings are usually installed between the bridge superstructure, piers and abutments, which can comprehensively reduce the seismic load and reduce the seismic load. The damage to the bridge structure has the dual functions of shock isolation and energy dissipation; at the same time, they also support the weight of the upper main structure and provide elastic recovery. [0003] However, although the natural rubber bearing is cheap, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/00
CPCE01D19/00
Inventor 赵宁雨蒋海飞张俊波李杰谢远光
Owner CHONGQING JIAOTONG UNIVERSITY
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