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Method for replacing bridge bearing without traffic interruption and special device thereof

A technology for bridge bearings and bridges, applied in bridges, bridge parts, bridge maintenance, etc., can solve the problems of small travel, large force bearing area, small jacking force, etc., achieve uncomplicated structure, simple operation process, and avoid vehicle congestion Effect

Inactive Publication Date: 2008-07-30
BEIJING GONGKE BRIDGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are (1) due to the large contact area when jacking up, resulting in a large force-bearing area, the air pressure is constant after filling, so that the jacking force is small; (2) limited by the airbag inflation space, the stroke is small

Method used

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  • Method for replacing bridge bearing without traffic interruption and special device thereof
  • Method for replacing bridge bearing without traffic interruption and special device thereof
  • Method for replacing bridge bearing without traffic interruption and special device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0191] Example 1. Application of lifting bridges and replacing supports without closed traffic

[0192] In this embodiment, jacks of the same model are connected in parallel to the equal pressure split valve, and the same oil pump is used to supply oil, so that the jacks have the same lift force. When lifting or dropping the beam (plate), the self-locking nut rotates with the stroke of the piston, which ensures the synchronization of the jack under various unfavorable conditions. The synchronous self-locking lifting system is safe and reliable. Specific examples are as follows:

[0193] 1. Bridge Overview

[0194] The K104+159 highway-rail interchange of the Jinan section of Jingfu Expressway is located in the Jinan section of Jingfu Expressway. The center pile number is K104+159, and the span layout is 6×30+6×30+5×30+40+6×30+7 ×30+7×30m, the upper structure is prestressed concrete simply supported T-beams, and the lower structure is column piers and pile foundations. The bridge d...

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Abstract

The invention discloses a method for a raising bridge without closing the traffic and a device which is specially used for the method. The device provided by the invention connects more than two self locking jacks in parallel by a dividing valve and the self locking jacks are supplied with oil by the same oil pump. The invention also provides the method adopting the device to raise the bridge. By applying the special device and the method which are provided by the invention, the operation technique is simple and the replacement of a support saddle can be realized under the condition without interrupting the traffic, so as to avoid the traffic crowd caused by closing the traffic, and alleviate the pressure of leading and distributary of the vehicles, thereby having obvious economic and social benefits.

Description

Technical field [0001] The invention relates to a method and a special device for replacing a bridge support without interrupting traffic. Background technique [0002] In a beam bridge, the support is set between the upper structure of the bridge and the pier. Its function is to transmit various load reactions on the bridge span structure to the pier and abutment, while ensuring the required displacement and rotation of the bridge span structure, so that The actual forces on the upper and lower structures are consistent with the calculated theoretical schema. [0003] In many beam bridges in China, the phenomenon of bearing aging damage is more common. Many bridge bearings have experienced various diseases after a certain period of use, such as rubber aging, cracks, external drums, voids, exposed steel plates, and corrosion. , The bearing displacement exceeds the limit, etc. In particular, the permanent deformation of the supports of slope bridges and curved bridges is serious, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D19/04
Inventor 张劲泉王国亮李承昌姜博孙晓红王存立路波
Owner BEIJING GONGKE BRIDGE TECH
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