Anti-overturning device for single-pier bridge

An anti-overturning, single-column pier technology, which is applied to bridges, bridge maintenance, bridge reinforcement, etc., can solve the problems of bridge anti-seismic performance, difficult construction, and long construction period, so as to improve anti-overturning performance and anti-seismic performance, Avoid overturning accidents and facilitate construction

Inactive Publication Date: 2020-01-17
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also limitations such as difficult construction, long construction period, and high cost, and the seismic performance of the reinforced bridge is not considered.

Method used

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  • Anti-overturning device for single-pier bridge
  • Anti-overturning device for single-pier bridge

Examples

Experimental program
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Embodiment Construction

[0018] The following describes the scheme in further detail in conjunction with the accompanying drawings:

[0019] The hinged support 4 is first anchored on both sides of the bridge main girder 2 and the pier column 1 with chemical bolts 5, and a pair of viscous dampers 3 are installed on both sides of the bridge main girder 2 and the bridge pier column 1. The bridge girder 2 and the pier column 1 are connected together by a viscous damper 3. Install a series of devices where reinforcement is needed. When the bridge main girder 2 has a lateral corner, a pair of viscous dampers 3 will restrain the bridge main girder 2.

[0020] As described above, the present invention can be realized.

[0021] The technical solution of this patent is not limited to the limitation of the above-mentioned implementation examples. All technical modifications made according to the technical solution of this patent fall within the protection scope of this patent.

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Abstract

The invention relates to an anti-overturning device for a single-pier bridge. The anti-overturning device is installed between a bridge girder and a pier stand column and comprises viscous dampers, ahinge support and chemical anchor bolts. The hinged support is anchored on the bridge girder and the bridge pier stand column, viscous dampers are installed at the two sides of the bridge girder and the two sides of the bridge pier stand column, and the bridge girder is connected with the pier stand column through the viscous dampers. By additionally arranging the viscous dampers between the bridge girder and the pier stand column, the bridge girder can be effectively prevented from overturning, and the overturning resistance of the single-pier bridge is improved. The anti-overturning device is simple in structure, is convenient to construct, and has the good economical efficiency.

Description

Technical field [0001] The invention belongs to the field of strengthening the lower structure of a bridge, and relates to a single-pillar pier bridge anti-overturning device. Background technique [0002] In order to save land, most of my country's urban overpasses and expressway ramps have adopted single-pillar pier box girder structures. This kind of single-pillar pier bridge has the advantages of small footprint, effective use of space and beautiful bridge lines. [0003] However, in practical engineering applications, the single-post pier box girder bridge has a great risk of overturning under the accidental over-limit eccentric load. In recent years, there have been many single-pillar pier bridge overturning accidents in China. For example, the bridge deck overturning accident on the Xigang Road of Wuxi Section of National Highway 312 caused casualties and property losses. The safety of single-pillar pier bridges has changed. Has become increasingly prominent. [0004] In or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 周宏宇刘亚南曹晓庆周运
Owner BEIJING UNIV OF TECH
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