Construction method of hinged pull-type steel inner formwork and prefabricated hollow slab beam

A pull-out, hinged technology, applied in the direction of manufacturing tools, mold separation devices, ceramic molding machines, etc., can solve the problems of insufficient rigidity, difficulty, exposed ribs on the contact surface, etc., and achieves significant economic benefits, simple operation, and convenient demoulding. Effect
CN102294741AActive Publication Date: 2011-12-28CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA RAILWAY NO 2 ENG GRP CO LTD
Publication Date
2011-12-28

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Abstract

The invention discloses a hinged draw type steel internal mould and a construction method for prefabricating hollow slab beams, which have the beneficial effects that: the defects that the adopted traditional air bag internal mould is difficult to position, is easy to upwards float, generates revealed reinforcement, is distorted indoors, does not have straight linearity and the like are avoided; and the invention has the characteristics of simplicity in operation, convenience in demoulding, greatly-shortened installation and dismantling times and convenience in backward use, has lowered cost, improved working efficiency, an obvious economic benefit, and is easy to popularize.
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Description

technical field

[0001] The invention relates to the field of highway and bridge construction, in particular to a construction method for a hinged pull-type steel inner mold and a prefabricated hollow slab girder. Background technique

[0002] In the construction of highway bridges, the slab girder inner mold used in the traditional hollow slab girder prefabrication method is mostly formed by the rubber airbag inner mold. Due to the essential characteristics of the rubber airbag, its rigidity is insufficient, the internal inflation is large, and the buoyancy is large. It is difficult to position, so the inner mold The geometric dimensions are prone to deformation and floating, and the contact surface of the inner mold of the formed hollow slab girder often has quality defects such as exposed ribs and large linear dimension errors. And the low service life is not conducive to reverse use. Once damaged, it is difficult to repair and the investment cost is relatively large. Co...

Claims

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