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Concrete box beam first-aid repair method with prefabricated part on-site assembling combination beam

A technology of concrete box girder and prefabricated components, which is used in bridge maintenance, erection/assembly of bridges, bridges, etc., to achieve the effect of quickly restoring traffic line operations, speeding up repairs, and reducing area and scale

Inactive Publication Date: 2015-05-13
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for repairing concrete box girders by assembling composite beams on site with prefabricated components, and solve the problems of emergency repairs and quick restoration of line operation of concrete box girders in railways, highways and urban traffic

Method used

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  • Concrete box beam first-aid repair method with prefabricated part on-site assembling combination beam
  • Concrete box beam first-aid repair method with prefabricated part on-site assembling combination beam
  • Concrete box beam first-aid repair method with prefabricated part on-site assembling combination beam

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example 1

[0043] Example 1 A double-track monolithic prestressed concrete high-speed railway box girder with a span of 24 meters suffered man-made damage. For this reason, the emergency repair method of concrete box girder prefabricated and assembled by sub-components is used for emergency repair. The repair method is:

[0044] Step 1: Prefabricate concrete roof 1, concrete bottom 2, corrugated steel web 3, plug 6 and other components according to a certain size and specification and store them in the beam storage yard.

[0045] Step 2: Remove the damaged concrete box girder, and erect support 5 between two bridge piers on site.

[0046] Step 3: Go to the beam storage yard and transport the prefabricated concrete roof 1, concrete floor 2, corrugated steel web 3, plug 6 and other components of corresponding sizes and specifications to the emergency repair site.

[0047] Step 4: Hoist the concrete base plate 2 onto the erected support 5, and connect the concrete base plate 2 sections th...

example 2

[0052] Example 2 A double-track integral prestressed concrete heavy-duty railway box girder with a span of 32 meters suffered severe damage to the upper structure during the earthquake. For this reason, the emergency repair method of concrete box girder prefabricated and assembled by sub-components is used for emergency repair. The repair method is:

[0053] Step 1: Prefabricate concrete roof 1, concrete bottom 2, corrugated steel web 3, plug 6 and other components according to a certain size and specification and store them in the beam storage yard.

[0054] Step 2: Remove the damaged concrete box girder, and erect support 5 between two bridge piers on site.

[0055] Step 3: Go to the beam storage yard and transport the prefabricated concrete roof 1, concrete floor 2, corrugated steel web 3, plug 6 and other components of corresponding sizes and specifications to the emergency repair site.

[0056] Step 4: Hoist the concrete base plate 2 onto the erected support 5, and conn...

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Abstract

Provided is a prefabricated part on-site assembling combination beam for concrete box beam first-aid repair. Through assembling and prefabricating a concrete top plate, a concrete baseplate, a corrugated steel web and plugs at the two ends of the beam, the emergency repairing and fast operation recovering of the concrete box beam of a railway, a highway and urban traffic and the like can be achieved. The first-aid repair method has the advantages of being capable of effectively reducing the dependency on large transporting and lifting equipment in a first-aid repair process, accelerating the first-aid repair speed of a bridge, decreasing the area and the scale of an emergency beam storage field, lowering the first-aid repair cost, and achieving the purpose of the fast recovering of traffic line operation.

Description

technical field [0001] The invention belongs to the technical field of civil engineering temporary emergency bridge repair, relates to a method for emergency repair of concrete box girders assembled on site with prefabricated components, and is applied to emergency repair and rapid restoration of concrete box girders in railways, highways and urban traffic. Background technique [0002] At present, concrete box girders are widely used in bridge engineering due to their advantages such as large longitudinal and transverse stiffness, good integrity, and good dynamic performance. However, when the concrete box girder is damaged by natural disasters, wars, impacts, etc., it is more difficult to repair it due to the large volume and weight of the concrete box girder. The current emergency repair of concrete box girder mainly adopts methods such as 64-type railway military steel girder, disassembled steel truss girder, and segmental prefabricated assembly. The utility model paten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
CPCE01D22/00E01D2/04
Inventor 朱尔玉康亚雄
Owner BEIJING JIAOTONG UNIV
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