Fixing device for road reinforced concrete box culvert end formwork and its application method

A technology for reinforced concrete box culverts and end formwork, which is applied in the direction of road floors and buildings, and can solve the problems of inconvenient fixing of the end of reinforced concrete box culvert formwork, failure to meet construction requirements, economic losses, etc., and achieve good formwork fixation , Reduce engineering cost and construction period cost loss, and protect from damage

Active Publication Date: 2017-12-29
MCC5 GROUP SHANGHAI CORPORATION LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of box culvert construction, there are many ways to fix the formwork at the end of the box culvert. The conventional method for fixing the formwork at the end of the box culvert in most highway projects is to support one end of the steel pipe on the formwork after the formwork is installed, and the other end is inclined However, the structural size of the box culvert structure is designed according to the force of the box culvert, and the end formwork of the box culvert with different structural sizes is subjected to stress during the concrete pouring process. Therefore, the formwork at the end of the box culvert fixed by construction experience cannot meet the construction requirements.
The phenomenon of "exploding mold" often occurs, which not only causes direct economic losses, but also causes construction period losses
[0003] Therefore, there are above-mentioned inconveniences and problems in the known fixing mode of reinforced concrete box culvert formwork end.

Method used

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  • Fixing device for road reinforced concrete box culvert end formwork and its application method
  • Fixing device for road reinforced concrete box culvert end formwork and its application method
  • Fixing device for road reinforced concrete box culvert end formwork and its application method

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Experimental program
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Effect test

Embodiment 1

[0041] The fixing device for the formwork at the end of the road reinforced concrete box culvert of the present invention is arranged at the end of the box culvert, and the end of the box culvert is provided with a water stop, including a fixing frame 1, a steel bar connecting rod 6, and a pull screw 2. Features:

[0042] Described fixed frame 1 is that the cross section that steel bar makes is trapezoidal cage frame, and its lower longitudinal bar 14 is parallel with upper longitudinal bar 16, and lower cross bar 15 is parallel with upper cross bar 17; One end of cage frame is provided with gap 19, The width of the gap is 40mm, the upper longitudinal bar 16 is a complete steel bar, the lower longitudinal bar 14 is broken and divided into two, one end of the lower longitudinal bar at the disconnection is connected to one end of the diagonal brace 18, and the other end of the diagonal brace Connect with upper longitudinal bar 16; Described fixed frame 1 is made by the threaded ...

Embodiment 2

[0045] The using method of the fixing device for the end formwork of the reinforced concrete box culvert of the present invention is arranged on the end of the box culvert, and the end of the box culvert is provided with a water stopper, and is characterized in that it comprises the following steps:

[0046] a. When installing the box culvert bottom plate or side wall reinforcement, weld the reinforcement connecting rod 6 to the structural longitudinal reinforcement 7 in advance, and protrude 15cm from the outer side of the formwork; the structural transverse reinforcement is a threaded reinforcement with a diameter of 20mm.

[0047] b. Install template 9 and back frame 10;

[0048] c. Weld the threaded sleeve 3 on the end of the steel bar connecting rod;

[0049] d. Install the opposite pull screw 2, which is about to rotate one end of the opposite pull rod into the threaded sleeve 3; the opposite pull screw 2 is made of a 12mm diameter smooth round steel bar, and is 27cm lon...

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Abstract

A fixing device for the formwork at the end of a reinforced concrete box culvert for highways, which is arranged at the end of the box culvert, and the end of the box culvert is provided with a water stopper, including a fixing frame (1), a steel bar connecting rod (6), and a tension screw (2), characterized in that: the fixing frame (1) is a cage frame with a trapezoidal cross-section made of steel bars, one end of the cage frame is provided with a gap (19), and one end of the steel bar connecting rod (6) is connected to the steel bar The structural longitudinal reinforcement (7) of the concrete box culvert is welded, and the other end is welded with a threaded sleeve (3). The lower bottom and the upper bottom of the trapezoidal cage frame are finally fastened on the fixture with nuts (5). The fixing device of the invention has the advantages of simple structure, low cost, light weight, fast and convenient use, good template fixing state, reusable, can well protect the waterstop from damage and deformation, and can ensure the level of the waterstop advantage of degrees.

Description

technical field [0001] The invention relates to a formwork fixing device, in particular to a fixing device for the formwork at the end of a reinforced concrete box culvert of a highway and a method for using the same. Background technique [0002] In the process of box culvert construction, there are many ways to fix the formwork at the end of the box culvert. The conventional method for fixing the formwork at the end of the box culvert in most highway projects is to support one end of the steel pipe on the formwork after the formwork is installed, and the other end is inclined However, the structural size of the box culvert structure is designed according to the stress of the box culvert, and the end formwork of the box culvert with different structural sizes will be subjected to stress during the concrete pouring process. Therefore, the formwork at the end of the box culvert fixed by construction experience cannot meet the construction requirements. The phenomenon of "exp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01F5/00
Inventor 王志敏毛远富
Owner MCC5 GROUP SHANGHAI CORPORATION LIMITED
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