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Method for mounting high pier, tower over-form construction reinforced bar and movable support thereof

A technology of movable brackets and steel bars, which is applied in the fields of formwork/template/work frame, on-site preparation of building components, structural elements, etc., can solve the problems of waste, poor working conditions, low construction efficiency, etc. Management costs, improving operational efficiency, and the effect of a small one-time investment

Inactive Publication Date: 2009-07-15
SICHUAN ROAD & BRIDGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the construction of traditional bridge high piers and towers, especially in the construction of suspension bridges, cable-stayed bridges, continuous rigid frame bridges and continuous girder bridges, etc. Or set up steel pipe scaffolding for fixing. During the construction of high piers, the steel-steel skeleton only plays the role of fixing and positioning the steel bars and providing a simple operation platform. Generally, the design does not consider the participation of the steel-steel skeleton.
However, as a measure to stabilize the positioning of steel bars, the shaped steel skeleton cannot be reused, and can only be poured in concrete together with the steel bars, which is a one-time investment, causing great waste
At the same time, the steel-steel frame structure used in the past can only solve the problem of the installation of the main reinforcement, but cannot solve the problem of the installation of the stirrups. The hoop binding and welding can only temporarily install the platform, and the working conditions are extremely poor. In the process of installation and positioning, there are basically no reliable safety measures or construction platforms, only simple protection with safety ropes or safety belts, the life safety of operators cannot be effectively guaranteed, and the efficiency of construction operations is extremely low
In addition, the traditional high piers and tower construction methods are not economical and practical in terms of cost and construction period

Method used

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  • Method for mounting high pier, tower over-form construction reinforced bar and movable support thereof
  • Method for mounting high pier, tower over-form construction reinforced bar and movable support thereof
  • Method for mounting high pier, tower over-form construction reinforced bar and movable support thereof

Examples

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Embodiment 1

[0031] Taking the high pier construction of Qianwei Minjiang Bridge on Leyi Expressway as the background, compared with the traditional construction method, the direct cost saving is more than 600,000 yuan. Sichuan Leyi Expressway Qianwei Minjiang Bridge is located 5 kilometers northwest of Qianwei County, Leshan. The north bank starts from Wayao Bay in Songlin Villa, crosses National Highway 213, Minjiang River, Qianwei-Shixi Highway, and ends at Xiangping Village, Tangba Township. According to the terrain and river conditions, the span combination of Qianwei Minjiang River Bridge is 110m+200m+110m, continuous rigid frame+25×40m simply supported T-beam, and the total length of the bridge is 1438m. The average height of the main pier body, junction pier body and No. 4-18 pier columns of the approach bridge is about 50m. Due to design reasons, no section steel stiff frame is designed in all high piers. With the method for installing steel bars for high pier turning formwork co...

Embodiment 2

[0048] Such as Figure 4~6 As shown, the method for the installation of high pier turning form construction steel bars of the present invention, except the turning method construction until the construction reaches about 2000mm below the top of the first section steel bar, the height of the first section steel bar is 12m, and the clearance size in the movable support of the approach pier The distance between the outer truss 1 and the inner truss 2 of the movable support of the approach pier is 20mm minus the size of the pier body of the approach pier. Except that it is circular, all the others are the same as in Example 1.

Embodiment 3

[0050] Such as Figure 7-9 As shown, the method for the installation of high pier turning form construction steel bars of the present invention, except the turning method construction until the construction is about 1250mm below the top of the first section steel bar, the height of the first section steel bar is 10m, and the clearance size in the movable support of the junction pier The pier body size of the junction pier is reduced by 15mm, the distance between the outer truss 1 and the inner truss 2 of the movable support of the junction pier is 800mm, and the shape of the inner space of the cross section of the movable support of the junction pier is the same as the shape of the outer shape of the plane section of the junction pier body. Except for rectangle, all the other are identical with embodiment 1.

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Abstract

The invention relates to a method for installing reinforcing steel for the rollover construction of a high pier and a tower and a moveable bracket thereof. The method for installing the reinforcing steel for the rollover construction of the high pier and the tower has the construction steps as follows: (1) according to the characteristics of the sections of the pier and the tower, a moveable bracket (2) matched with a pier body and a tower body is designed and processed, a movable bracket (3) and reinforcing steel (4) are installed, the moveable brackets are dismounted, a pier body moulding board or a tower body moulding board is installed, concrete (5)for the section of a pier body or the section of a tower body on which the reinforcing steel is bound is cast, hoisting equipment is used for installing the moveable brackets, and finally, the installation and the construction of the next section of reinforcing steel are carried out. The method for installing the reinforcing steel for the rollover construction of the high pier and the tower and the moveable bracket thereof greatly reduce the construction cost and the security risk, and have obvious efficiency of accelerating the engineering speed. The invention provides the method for installing the reinforcing steel and the moveable bracket, which are safe, reliable, economic and convenient, for the construction of the high pier and the tower with the constant section and variable section reinforced concrete used for a suspension bridge, a cable stayed bridge, a continuous rigid frame bridge, a continuous girder bridge and bridges of other types.

Description

Technical field: [0001] The invention belongs to the technical field of high pier and tower construction for bridge construction, and particularly relates to a method for installing steel bars for high pier and tower overturning construction and a movable support thereof. Background technique: [0002] In the construction of traditional bridge high piers and towers, especially in the construction of suspension bridges, cable-stayed bridges, continuous rigid frame bridges and continuous girder bridges, etc. Or set up steel pipe scaffolding for fixing. During the construction of high piers, the steel-steel skeleton only plays the role of fixing and positioning the steel bars and providing a simple operation platform. The design generally does not consider the participation of the steel-steel skeleton. However, the section steel rigid frame cannot be reused as a positioning and stabilizing measure for the reinforcing bar, and can only be poured in the concrete together with the...

Claims

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Application Information

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IPC IPC(8): E04C5/00E04C5/16E04G11/28
Inventor 李玉友吴洪朗王祥甘洪许自义刘静钟建平漆勇刘洪春张军张佐安
Owner SICHUAN ROAD & BRIDGE GRP
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