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Box-beam steel bar centralized tying and integral hoisting construction method

A technology of integral hoisting and steel bar binding, applied in bridges, bridge construction, bridge materials, etc., can solve the problems of simple hanger structure, difficult to adapt to box girder, small number of steel bars, etc. and easy installation

Inactive Publication Date: 2008-06-18
CHINA RAILWAY HI TECH IND CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country has begun to prefabricate prestressed concrete simply supported box girders on the Qinshen Passenger Dedicated Line. The maximum span of the box girder is 24m. Although the steel bars adopt the centralized pre-tied and overall hoisting process, the number of steel bars is small and the tonnage is small. The structure of the hanger used in the hoisting of the tying frame and the steel bar is relatively simple, and it is difficult to adapt to the box girder with a span of 32m. There is no related technology for the 32m / 900t box girder steel bar in the prior art

Method used

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  • Box-beam steel bar centralized tying and integral hoisting construction method
  • Box-beam steel bar centralized tying and integral hoisting construction method
  • Box-beam steel bar centralized tying and integral hoisting construction method

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention will be further described:

[0022] preferred embodiment

[0023] Concentrated pre-binding and overall hoisting construction method of box girder steel bars. The steel bars are bound on the tire mold. The web 1 and the bottom plate 2 are bound together, and the bridge deck steel bars are bound separately. After the inner mold is assembled, the bridge deck steel bars and the web 1 and bottom plate 2 steel bars are assembled and bound, and then hoisted by box girder steel bar spreader 3, including the following steps:

[0024] a. Box girder bottom and web reinforcement binding tire mold:

[0025] As shown in Figure 1, the spacing of the longitudinal and transverse steel bars is in accordance with the design requirements. Groove 4 is cut on the bracket for binding the steel bars, and the steel bars are just stuck in the groove 4 to ensure the binding quality of the steel bars; the two outer bottom edges...

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Abstract

The present invention relates to a pre-binding and lifting method of box girder reinforcing steel bars, in particular to a centralized pre-binding and integral lifting construction method of box girder reinforcing steel bars. The purpose of the present invention is to provide the centralized pre-binding and integral lifting construction method of the 32m / 900t box girder reinforcing steel bars of a railway passenger-dedicated railway. In the applied technical scheme, the binding of the steel bars is carried out on a tire mould, wherein, a web plate is bound with a bottom plate, the bridge deck steel bars are separately bound, after an internal mold is assembled, the bridge deck steel bars are assembled and bound with the web plate and the bottom plate, and then the lifting is carried out by a box girder steel bar hoister. The present invention is mainly applied to the centralized pre-binding and the integral suspension setting construction of the 32m / 900t box girder reinforcing steel bars.

Description

technical field [0001] The invention relates to a method for pre-tying and hoisting steel bars of a box girder, in particular to a construction method for centralized pre-tying and overall hoisting of 32m / 900t box girder steel bars on a railway passenger dedicated line. Background technique [0002] my country has begun to prefabricate prestressed concrete simply supported box girders on the Qinshen Passenger Dedicated Line. The maximum span of the box girder is 24m. Although the steel bars adopt the centralized pre-tied and overall hoisting process, the number of steel bars is small and the tonnage is small. The hanger structure used for tying frame and reinforcement hoisting is relatively simple, and it is difficult to adapt to the box girder with a span of 32m. There is no related technology for 32m / 900t box girder reinforcement in the prior art. Contents of the invention [0003] The object of the present invention is to provide a construction method of centralized pre-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D2/04E01D101/26
Inventor 钟士权王强邹宏伟韩伟孙祖红
Owner CHINA RAILWAY HI TECH IND CORP LTD
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