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Manufacturing method of small prefabricated box girder

A manufacturing method and technology of small box girders, applied in the direction of manufacturing tools, molds, ceramic molding cores, etc., can solve the problems of low work efficiency and increased labor intensity of workers, and achieve reduced labor intensity, convenient demoulding and mold closing, The effect of advanced design, production and construction technology concepts

Active Publication Date: 2016-03-02
FOSHAN HIGHWAY&BRIDGE CONSTR PREFAB CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although the inventive technology realizes streamlined operation, avoids repeated switching of work types by workers, and is beneficial for workers to quickly accumulate operating experience, but the process of mold closing and demoulding is manual operation, which not only reduces work efficiency, but also increases the labor cost of workers. strength

Method used

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  • Manufacturing method of small prefabricated box girder
  • Manufacturing method of small prefabricated box girder
  • Manufacturing method of small prefabricated box girder

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Embodiment Construction

[0046] refer to Figure 1 to Figure 6 , a kind of manufacturing method of prefabricated small box girder provided by the present invention, comprises the following steps:

[0047] Step 1, prefabricated pedestal 1, pedestal 1 is the basic platform in the process of prefabricating the prestressed small box girder, supporting the entire weight of the unformed small box girder, and ensuring that the small box girder is in a horizontal position during the forming process, so that the small box girder After the beam is formed, it has uniform mechanical strength; it is required that the elevation difference of the foundation pedestal is not more than 15mm, the angle steel of each edge protection is firm, and the design requirements of the groove size on the pedestal at both ends meet the requirements and the position is accurate;

[0048] Step 2, install the template, the template is installed in the following order:

[0049] A. Install bottom mold 2, bottom mold 2 is installed as f...

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Abstract

The invention discloses a manufacturing method of a small prefabricated box girder. The manufacturing method includes the following steps that firstly, a pedestal is prefabricated; secondly, mold plates are installed, wherein the mold plates are installed in the following sequence of bottom mold installation, side mold installation, inner mold installation, end mold installation and flange plate installation on side molds; thirdly, concrete is poured and cured; fourthly, demolding is conducted, wherein demolding includes detaching of end molds at the two ends of a girder body, inner mold demolding and side mold demolding; and fifthly, the girder body is cured. According to the manufacturing method, fully-hydraulic actions are achieved through the outer mold plates, the use effect is improved greatly, and labor intensity is lowered; and semi-automation is achieved through an inner mold, quick demolding and mold combination of the mold plates are facilitated, the operation intensity of workers in small space in the girder body is lowered, and the potential safety hazards of working under the high temperature are reduced. The mold plates are firm and general in structure, quick and convenient to use and advanced in design manufacturing and construction process idea.

Description

technical field [0001] The invention relates to a bridge structural member, in particular to a manufacturing method of a prefabricated small box girder. Background technique [0002] Prefabricated box girders are generally used in bridges. Prefabricated box girders are prefabricated bending members that are prefabricated by pre-tensioning or post-tensioning prestressed steel bars, and then transported to the construction site for installation. [0003] The existing prefabricated small box girder production method is shown in the Chinese invention patent whose patent publication number is CN103774561A and the patent name is "flowing operation construction of expressway prefabricated small box girder tooling method", including the following steps: (1) at the bottom, In the processing area of ​​the web reinforcement skeleton, the bottom and web reinforcement tire formwork shall be made according to the size of the reinforcement skeleton of the designed small box girder, and the...

Claims

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Application Information

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IPC IPC(8): B28B23/02B28B7/16B28B7/30B28B7/00B28B13/06
CPCB28B7/0002B28B7/16B28B7/303B28B13/065B28B23/02
Inventor 毛志坚刘科强田月强欧可活程允武杨政赖德锐张机智罗西邹振江
Owner FOSHAN HIGHWAY&BRIDGE CONSTR PREFAB CO LTD
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