Internal mold and manufacturing method thereof, and precast box girder and manufacturing method thereof

A production method and internal mold technology, applied in bridges, molds, manufacturing tools, etc., can solve the problems of corner deformation, structural size excess, inelastic deformation, etc., to achieve strong deformation resistance, simplified installation difficulty, and low self-weight. Effect

Active Publication Date: 2013-07-10
CCCC FOURTH HIGHWAY ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large self-weight, when using the shaped steel formwork, it is inevitable that tools such as crowbars are needed to loosen the corners, which is easy to cause deformation of the corners, and because there are many hinge points, due to the long-term external force of the concrete Cause local inelastic deformation, resulting in problems such as structural size exceeding the design, concrete oversquare, etc.

Method used

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  • Internal mold and manufacturing method thereof, and precast box girder and manufacturing method thereof
  • Internal mold and manufacturing method thereof, and precast box girder and manufacturing method thereof
  • Internal mold and manufacturing method thereof, and precast box girder and manufacturing method thereof

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Embodiment Construction

[0043] The invention discloses an inner mold of a prefabricated box girder. The inner mold includes a skeleton piece and an inner mold panel formed by splicing a plurality of long strip steel materials. The inner mold panel is fixed around the outer side of the skeleton piece.

[0044] The present invention uses skeleton sheets to build the entire internal skeleton, and the inner mold panel is formed by splicing long strips of steel, and the long strips of steel are fixed on the outside of the skeleton sheet. The steel can be fixed on the outside of the skeleton one by one. The whole process can be completed manually or with the help of small auxiliary tools. There is no need to use heavy machinery such as small gantry cranes, which simplifies the difficulty of installation; when disassembling, just remove the long strips of steel. The inner mold can be naturally disintegrated when connected with the skeleton piece, and the disassembly is convenient and time-consuming. In addi...

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Abstract

The invention discloses an internal mold and a manufacturing method thereof, and a precast box girder and a manufacturing method thereof. The internal mold of the precast box girder comprises a skeleton sheet and an internal mold panel, wherein the internal mold panel is formed by splicing multiple pieces of strip-shaped steel; and the internal mold panel is fixed on the outer side of the skeleton sheet in a surrounding mode. The invention does not need to adopt heavy machinery such as a small gantry crane so as to simplify the mounting difficulty; and during disassembling, the internal mold can be disintegrated naturally only by disconnecting the strip-shaped steel with the skeleton sheet, so that disassembling is convenient and short time is consumed. In addition, compared with the internal mold panel with the whole sheet, the internal mold panel with the strip-shaped steel has light self weight. The whole internal anti-deformation capability can be improved by increasing the skeletons or manufacturing the skeleton through the materials with higher hardness, so that the anti-deformation capability of the invention is stronger.

Description

technical field [0001] The invention relates to the field of construction, more specifically, to an inner mold and a manufacturing method thereof, and a prefabricated box girder and a manufacturing method thereof. Background technique [0002] The inner formwork of the prefabricated box girder is mainly to achieve the geometric dimensions required by the design. It is a formwork made of different materials, and has sufficient bearing capacity to withstand the dead load produced by concrete and the live load produced by small machines and construction personnel. . Most of the inner mold is made of steel. Due to the heavy weight of the steel mold, a small gantry crane is required to cooperate with the installation during the installation process, and there are many nodes, which occupy the mechanical shift of the gantry crane and consume labor. The demolition time is also due to the large number of nodes and the long time. Due to the large self-weight, when using the shaped s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B7/22B28B7/26B28B23/04E01D2/04
Inventor 冷铁松薛江赵永昱陶善波张德祥陈鹏飞谭鸣
Owner CCCC FOURTH HIGHWAY ENG
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