Waterproof method for slab joints of blanket plate

A technology of bedding boards and bedding boards, which is applied to safety islands, buildings, etc., can solve problems such as adverse effects on project quality and construction environment, no bedding boards, and no effective waterproofing system for bedding boards, etc., to achieve low cost, easy waterproofing, Ease of construction

Inactive Publication Date: 2012-02-22
BEIJING MUNICIPAL CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after preliminary investigation, once the construction method encounters rainfall or other ground water during construction, the surface water will flow into the foundation pit along the installation gap of the laying board, which will adversely affect the quality of the project and the construction environment.
The prefabricated bedding method is the first application in China. There is no previous waterproof experience of bedding, including the construction examples of bedding in Japan, and no effective bedding waterproof system has been formed. Therefore, it is necessary to study an effective waterproof method for bedding. , to ensure the safe construction of subway stations

Method used

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  • Waterproof method for slab joints of blanket plate
  • Waterproof method for slab joints of blanket plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Including the following steps:

[0021] (1) Remove the sundries between the seams of the bedding board 1, brush with a steel wire brush to remove the rust, and then wipe it with cotton silk;

[0022] (2) Pack the first layer of PE foam rod 2, the gap between the cover plate 1 is greater than or equal to 5mm, the diameter of the first layer of PE foam rod 2 is 10mm, and it is placed at the depth of 80mm between the plates;

[0023] (3) Use single-component polyurethane waterproof coating 3 to continuously infuse the board seam, with a depth of 50mm, and to continuously infuse across the cross-connecting position of the cover plate 1 during the infusion;

[0024] (4) Pack the second layer of PE foam rod 4, the diameter of the second layer of PE foam rod 4 is 10mm, and the second layer of PE foam rod 4 is 10mm from the top of the board;

[0025] (5) Pour the remaining board seams to the top of the board with one-component polyurethane waterproof coating 3, and pour in two...

Embodiment 2

[0028] Embodiment 2: Including the following steps:

[0029] (1) Remove the sundries between the seams of the bedding board 1, brush with a steel wire brush to remove the rust, and then wipe it with cotton silk;

[0030] (2) Pack the first layer of PE foam rod 2, the gap between the cover plate 1 is less than 5mm, the diameter of the first layer of PE foam rod 2 is 5mm, and it is placed at a depth of 80mm between the plates;

[0031] (3) Use single-component polyurethane waterproof coating 3 to continuously infuse the board seam, with a depth of 60mm, and continuously pour across the cross-connecting position of the cover plate 1 during the infusion;

[0032] (4) Pack the second layer of PE foamed rod 4, the diameter of the second layer of PE foamed rod 4 is 5mm, and the second layer of PE foamed rod 4 is 10mm from the top of the board;

[0033] (5) Pour the remaining board seams to the top of the board with one-component polyurethane waterproof coating 3, and pour in two times. The fir...

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PUM

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Abstract

The invention discloses a waterproof method for slab joints of a blanket plate. The waterproof method disclosed by the invention comprises the following steps of: (1) eliminating sundries between slab joints of the blanket plate, brushing floating rust by utilizing a steel wire brush, and wiping by utilizing cotton silks; (2) filling a first PE (polyester) foaming rod layer, and placing the foaming rod at a position 80mm deep in the slab joint; (3) continuously filling the slab joint with the polyurethane waterproof coating, wherein filling depth is 50-60mm, and a cross-shaped joint position crossing the blanket plate is required to be continuously filled during filling; (4) filling a second PE foaming rod layer, wherein the second PE foaming rod layer is 10mm away from the top of the plate; (5) filling the rest of slab joints to the top of the plate with the polyurethane waterproof coating, filling in twice, filling the slab joint to be smooth after curing, wherein height of filling for the first time is 2-3mm lower than the edge of the blanket plate, and the cross-shaped joint position crossing the blanket plate is required to be continuously filled during the filling; (6) repeating the steps (5), (6), (7), (8) and (9) to complete waterproofing work on the slab joints of the blanket plate; and (7) standing for at least 24 hours.

Description

Technical field [0001] The present invention relates to the field of waterproofing of foundation pit engineering. Specifically, the present invention relates to a method for waterproofing between plate seams of bedding plates used for subway station bedding method construction. Background technique [0002] The successful implementation of the prefabricated paving method at Fengtaibei Road Station of Beijing Metro Line 9 indicates that this method has been successfully introduced and will surely be popularized and applied in the future urban underground construction. The prefabricated construction method successfully solved the contradiction between ground urban traffic and construction. However, after preliminary investigation, once the construction method encounters rainfall or other ground water during construction, surface water will flow into the foundation pit along the installation gap of the bedding, which will adversely affect the quality of the project and the construct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F1/00
Inventor 王文正任有旺刘彦林魏玉明黄明利裴书锋
Owner BEIJING MUNICIPAL CONSTR
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