Method for supporting cast-in-place box girder side formwork and the supporting device for box girder formwork
A formwork support and box girder technology, applied in bridges, bridge construction, bridge parts, etc., can solve problems affecting the quality of concrete products, box girder side form deformation, troublesome disassembly and installation, etc., to achieve wide practicability and popularization, avoid Deformation of side molds and cost saving effects
Active Publication Date: 2019-02-19
CCFED THE FIGTH CONSTR & ENG
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, steel pipe braces are difficult to fix and are prone to displacement. When pouring concrete, the box girder side forms are prone to deformation, which affects the quality of the finished concrete.
[0003] The use of diagonal braces makes the lateral pressure when pouring concrete form a lateral horizontal force on the support system, which can easily lead to the instability of the support and cause collapse accidents, and the disassembly and installation are more troublesome, resulting in safety hazards
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] look first figure 1 , figure 1 The construction method of the cast-in-place box girder in the prior art is shown, which mainly uses diagonal braces 15 to be fixed on steel pipe supports to support the side forms of the box girder.
[0026] Look again figure 2 , figure 2 Demonstrated the technical scheme of the present invention, it is to lay the I-beam 13 beyond the box girder flange plate 100~150mm on the box girder floor support; Steel 13 is fixed, and the support height is adjusted according to the height of the box girder. Support uprights 14 are arranged on both sides of the I-beam 13 to support the bottom formwork of the box girder flange plate. Then the box girder formwork is installed, and the box girder concrete is poured symmetrically on both sides. Since the lateral pressure generated during pouring concrete is horizontally and symmetrically transmitted to the I-beam 13 through the box girder formwork supporting device 12, the force is balanced. Good ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a cast-in-situ box girder side formwork supporting method and a box girder formwork supporting device adopted by the method. I steel (13) supported on a support is arranged under a box girder bottom formwork, the box girder formwork supporting devices (12) are arranged on the two sides of a box girder web to be fixedly connected with the I steel (13) to support box girder side formworks in a symmetrical force bearing mode; a box girder flange plate bottom formwork is supported by vertical supporting rods (14) erected on the I steel (13). Accordingly, by adopting a supporting system formed through the novel side formwork supporting devices, horizontal force symmetrically acts on the I steel without being transmitted to the support when concrete pouring is conducted, and therefore construction is safer; meanwhile, the triangular force bearing system formed by the novel side formwork supporting devices is steady and can effectively prevent the side formworks from being deformed and improve the project quality.
Description
technical field [0001] The invention relates to the technical field of bridge engineering construction technology, in particular to a method for supporting a cast-in-place box girder side form and a novel box girder formwork support device adopted therein. Background technique [0002] In the construction of cast-in-place box girders in bridge engineering, the side formwork support of common box girders is fixed by steel pipe diagonal braces. However, steel pipe braces are difficult to fix and are prone to displacement. When pouring concrete, the box girder side form is prone to deformation, which affects the quality of the finished concrete. [0003] The use of diagonal braces makes the lateral pressure when pouring concrete form a lateral horizontal force on the support system, which can easily lead to the instability of the support and cause collapse accidents, and it is troublesome to disassemble and install, resulting in potential safety hazards. [0004] Therefore, th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D19/00
CPCE01D19/00E01D21/00
Inventor 陈宇光刘建军张凌国其他发明人请求不公开姓名
Owner CCFED THE FIGTH CONSTR & ENG