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Ultra-large-area grouting construction method for steel-concrete combined section of cable-stayed bridge

A technology with super large area and construction method, applied in cable-stayed bridges, bridges, bridge parts, etc., can solve problems such as poor grouting effect, low construction efficiency, and complexity.

Inactive Publication Date: 2020-09-11
CCCC SHEC SECOND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is more complicated, the construction efficiency is low, and the grouting effect is not good when the top surface of the tower has no slope

Method used

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  • Ultra-large-area grouting construction method for steel-concrete combined section of cable-stayed bridge
  • Ultra-large-area grouting construction method for steel-concrete combined section of cable-stayed bridge

Examples

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Effect test

Embodiment 1

[0033] In order to solve the technical problems of the super-large-area grouting construction method of the steel-concrete joint section of the cable-stayed bridge in the prior art, the construction process is relatively complicated, the construction efficiency is low, and the grouting effect is not good when the top surface of the tower base has no slope. This embodiment provides a super-large-area grouting construction method for a steel-concrete joint section of a cable-stayed bridge, including the following steps:

[0034] Step 1) Dig notch 1;

[0035] Step 2) Set partition wall 2;

[0036] Step 3) Set pad 3;

[0037] Step 4) Install the steel tower of the first section;

[0038] Step 5) Grouting of bearing plate 4.

[0039] The super-large-area grouting construction method of the steel-concrete joint section of the cable-stayed bridge provided by the present invention is to form an enclosure 7 by reserving tower concrete around the top surface of the tower, and chiseli...

Embodiment 2

[0041] On the basis of Example 1, this example provides a super-large-area grouting construction method for the steel-concrete joint section of a cable-stayed bridge. To the top surface of the grouting layer 5, then reserve 25-35cm thick tower concrete around the top surface of the tower base, and chisel off the rest of the top surface of the tower base by chiseling to form a notch with a depth of 5-10cm 1.

[0042] The notch 1 is to pour the tower base to the top surface of the grouting layer 5 during the construction of the tower base, and then remove the overcast concrete by chiseling to form a notch 1 with a depth of 5 cm. Surface flatness and grouting quality. During the chiseling process, 30cm thick tower concrete is reserved around the tower as a fence 7 to prevent the grout from overflowing.

Embodiment 3

[0044] On the basis of Example 1, this example provides a super-large-area grouting construction method for the steel-concrete joint section of a cable-stayed bridge. Step 2) The process of setting the partition wall 2 is as follows: The partition wall 2 divides the notch 1 into multiple grouting areas of equal area.

[0045] The present invention is aimed at grouting area greater than 270m2 2 , in order to avoid the problem of insufficient grouting in the super large grouting area, the super large grouting area is divided into equal areas by setting a partition wall 2, and then the grouting is performed to ensure the grouting quality and improve the grouting efficiency.

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Abstract

The invention provides an ultra-large area grouting construction method for a steel-concrete combined section of a cable-stayed bridge. The ultra-large area grouting construction method comprises thesteps of chiseling a notch, arranging a partition wall, arranging cushion blocks, installing a first section of steel tower and grouting a bearing plate. Notch chiseling comprises the step of pouringa tower base to the top surface of a grouting layer in the tower base construction process; except for tower base concrete with the width of 30 cm reserved on the periphery of the top face of the tower base, overpoured concrete with the width of 5 cm is chiseled away in a roughening mode, area division is conducted by arranging a partition wall, cushion blocks are arranged to support the first section of the steel tower, and grouting is achieved by directly conducting grouting from the hole position of a pressure bearing plate. Due to the fact that concrete around the tower base is used as a fence, a formwork does not need to be erected, pollution to the inclined face of the tower base during grouting is avoided, and the grouting quality is improved. As the partition wall adopts a groutingmaterial and a rubber strip, the leakproofness is enhanced; by means of the construction method, high-quality and high-efficiency construction of ultra-large-area grouting of the steel-concrete combined section of the cable-stayed bridge is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a super-large-area grouting construction method for a steel-concrete joint section of a cable-stayed bridge. Background technique [0002] The construction of super-large cement slurry layer behind the pressure plate is a very important construction process in the construction of the steel-concrete composite section of the main tower of the cable-stayed bridge. Generally, the top surface of the tower base has a slope. After the pressure plate is installed and positioned, the bearing The holes on the pressing plate are blocked with wooden wedges, and then the main grouting channels, exhaust channels, drainage channels and spare grouting channels are arranged, and the grouting is performed from a low place with a grouting machine. This method is relatively complicated, the construction efficiency is low, and the grouting effect is not good when the top sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D11/04E01D19/14E01D101/24E01D101/30
CPCE01D21/00E01D11/04E01D19/14E01D2101/24E01D2101/30
Inventor 张其玉周畅田欣刘彦军阳斯成邬洪卫张凯张哲
Owner CCCC SHEC SECOND ENG
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