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: 2013-07-31
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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: comprise the following steps:

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

[0022] (2) Fill the first layer of PE foam rods 2, the gap between the bedding board 1 is greater than or equal to 5mm, the diameter of the filled first layer of PE foam rods 2 is 10mm, and put it into the gap between the boards at a depth of 80mm;

[0023] (3) Use one-component polyurethane waterproof coating 3 to continuously pour the board seam, the pouring depth is 50mm, and it needs to be continuously poured across the cross joint position of the bedding board 1 during pouring;

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

[0025] (5) Use the one-component polyurethane waterproof coating 3 to fill the remaining board seam...

Embodiment 2

[0028] Embodiment 2: comprise the following steps:

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

[0030] (2) Fill the first layer of PE foam rods 2, the gap between the bedding board 1 is less than 5mm, the diameter of the filled first layer of PE foam rods 2 is 5mm, and put it into the gap between the boards at a depth of 80mm;

[0031] (3) Use one-component polyurethane waterproof paint 3 to continuously pour the board seam, the pouring depth is 60mm, and it is necessary to continuously pour across the cross joint position of the bedding board 1 during pouring;

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

[0033] (5) Use the one-component polyurethane waterproof coating 3 to fill the remaining board seams to the top of the ...

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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 invention relates to the field of foundation pit engineering waterproofing, in particular, the invention relates to a method for waterproofing between slits of bedding slabs used in the bedding construction of subway stations. Background technique [0002] The successful implementation of the prefabricated bedding method in Fengtaibei Road Station of Beijing Subway Line 9 marks the successful introduction of this construction method, which will surely be popularized and applied in future urban underground construction. The prefabricated bedding 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, the surface water will flow into the foundation pit along the installation gap of the laying board, which will adversely affect the project quality and construction environment. The pr...

Claims

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Application Information

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Patent Type & Authority Patents(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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