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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

Active Publication Date: 2011-12-28
CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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 high.

Method used

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

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Embodiment Construction

[0029] A hinged pull-type steel inner mold, such as figure 1 As shown in Figure 3, it includes: a first member 1, a second member 2, a hinged straight section 3, a pull rod 5 and an arm plate 6, wherein: the first member 1 and the second member 2 are divided into two symmetrical parts up and down. segment, the upper and lower segments of the first member 1 are hinged together through a hinge point, and the upper and lower segments of the second member 2 and the two ends of the hinged straight segment 3 are hinged together through a hinge point; the first Component 1 and second component 2 are connected by oblique wedge joints; an arm plate 6 is provided between the upper and lower segments of the first component 1 and second component 2 to support the inner mold; the arm plate 6 is divided into upper and lower sections, which are connected by pull rod 5 between the two sections. When drawing the mold outward, you only need to pull the pull rod 5, and the upper and lower secti...

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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.

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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Application Information

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IPC IPC(8): B28B7/26B28B23/14
Inventor 黄立进彭良华何复生黄浩左政徐康周定洪罗飚赵瑞文杨泉勇王国炜
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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