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

A bridge and jacking technology, applied in the direction of bridges, bridge parts, bridge maintenance, etc., can solve the problems of large force area, small stroke, small jacking force, etc. Effect

Inactive Publication Date: 2011-01-26
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] Embodiment 1, the application of unenclosed traffic jacking bridge and replacement bearing

[0192] In this embodiment, the jacks of the same type are connected in parallel to the equal pressure diverter valve, and the oil is supplied by the same oil pump, so that the lifting force of each jack is the same. The self-locking nut rotates with the piston stroke when lifting or falling the beam (plate), which ensures the synchronization of the jack under various unfavorable conditions. The synchronous self-locking jacking system is safe and reliable. Specific examples are as follows:

[0193] 1. Overview of the bridge

[0194] The K104+159 road-rail interchange of the Jinan section of the Beijing-Fuzhou Expressway is located in the Jinan section of the 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-beam, the lower structure is column abutment a...

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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. Byapplying 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 for replacing bridge supports without interrupting traffic and a special device thereof. Background technique [0002] In the beam bridge, the support is set between the superstructure of the bridge and the abutment. The actual stress of the upper and lower structures is consistent with the calculated theoretical diagram. [0003] In many girder bridges in China, the phenomenon of aging and damage of bearings is relatively common. After a certain period of use, quite a few bridge bearings have various diseases, such as rubber aging, cracks, outer drums, voids, exposed steel plates and corrosion. , Support displacement overrun, etc. In particular, the permanent deformation of the bearings of sloping bridges and curved bridges is serious, and failures of bearings frequently occur, and reflection defects appear on the bridge deck and pier columns, which affect the normal use of the bridge and shorten the service life of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/04E01D22/00
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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