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Self-waterproof structure for concrete side wall of non-fat-groove underground engineering and construction method

A technology for underground engineering and waterproof structures, applied to building components, building structures, wine cellars, etc., can solve problems such as shrinkage and cracking of the main concrete structure, improve the overall tensile performance and sag performance, reduce self-shrinkage, The effect of expansion product stabilization

Pending Publication Date: 2021-12-07
武汉三源特种建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a self-waterproof structure and construction method for the concrete side wall of underground engineering without fertilizer tanks, so as to solve the problem of shrinkage and cracking of the concrete main structure of underground waterproofing engineering

Method used

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  • Self-waterproof structure for concrete side wall of non-fat-groove underground engineering and construction method
  • Self-waterproof structure for concrete side wall of non-fat-groove underground engineering and construction method

Examples

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Effect test

Embodiment 1

[0035] For a provincial highway tunnel project in Wuxi, the main body of the open section of the lake east section is supported by SMW piles, and the main body of the buried section is supported by ground connection walls, concrete support beams and steel supports, all of which are construction techniques without fertilizer tanks. Waterproof grade two and above, concrete grade C40P8, side wall thickness 1.1-1.5m, wall height 2.0-8.8m, length about 600m, construction season is winter, daily average temperature ≤10℃. The self-waterproof structure of this section of the side wall includes a support structure, a modified EPE pearl foam board, and a self-waterproof concrete layer. It is bonded on the surface of the modified EPE pearl foam board, and the surface of the non-woven fabric is coated with a layer of cement-based permeable crystalline waterproof paint.

[0036] The construction method steps of the self-waterproof structure of the side wall are as follows:

[0037] S1. Af...

Embodiment 2

[0047] For a lake-crossing tunnel project of an urban trunk line in Suzhou, the main body of the open section in the east of the lake is supported by SMW piles, and the main body of the buried section is supported by ground connection walls, concrete support beams and steel supports. Grade II and above, concrete grade C35P8, side wall thickness 0.7-1.0m, wall height 2.2-6.8m, length about 1000m, construction seasons are summer, autumn and winter, average daily temperature in summer ≥ 25°C, average daily temperature in autumn 10-25°C ℃, and the daily average temperature in winter is ≤10℃. The self-waterproof structure of this section of the side wall includes a support structure, a modified EPE pearl foam board, and a self-waterproof concrete layer. It is bonded on the surface of the modified EPE pearl foam board, and the surface of the non-woven fabric is coated with a layer of cement-based permeable crystalline waterproof paint.

[0048] The construction method steps of the ...

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Abstract

The invention discloses a self-waterproof structure for a concrete side wall of non-fat-groove underground engineering and a construction method. The self-waterproof structure comprises a supporting structure, a modified EPE pearl foam board and a self-waterproof concrete layer, wherein a layer of non-woven fabric is laid on the surface of the modified EPE pearl foam board, the non-woven fabric is bonded to the surface of the modified EPE pearl foam board through an adhesive, and the surface of the non-woven fabric is coated with a layer of cement-based capillary crystalline waterproof paint. The construction method comprises the following steps: cleaning the surface layer of the supporting structure, fixing the modified EPE pearl foam board, gluing the non-woven fabric, spraying the cement-based capillary crystalline waterproof paint, preparing the self-waterproof concrete, pouring the self-waterproof concrete layer, and removing the mold and maintaining. The problem of shrinkage cracking of the underground waterproof engineering concrete main body structure can be effectively solved, and the self-waterproof purpose of the concrete structure is achieved.

Description

technical field [0001] The invention belongs to the technical field of concrete waterproofing, and in particular relates to a self-waterproof structure and a construction method for a concrete side wall of an underground engineering without a fertilizer tank. Background technique [0002] With the rapid development of my country's construction and municipal engineering, underground deep foundation pit projects have increased significantly, and the proportion of construction without fertilizer tanks has increased, such as underground concrete projects such as underground tunnels, subways, pipe galleries and urban high-rise buildings. Its advantages are that it can reduce the backfill cost, greatly reduce the backfill construction period, and reduce the quality hidden dangers caused by the settlement and deformation of the backfill soil. This type of structure is mostly suitable for the type of underground diaphragm wall and row pile anchor spraying support. The concrete of the...

Claims

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Application Information

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IPC IPC(8): E04B1/00E04B1/66C04B28/04C04B111/27
CPCE04B1/0007E04B1/665C04B28/04C04B2111/00293C04B2111/27C04B2201/50C04B18/141C04B18/08C04B14/06C04B14/02C04B2103/22C04B2103/302C04B2103/0068C04B24/003C04B2103/0051
Inventor 王丙垒纪宪坤徐可刘拼方博赵娟
Owner 武汉三源特种建材有限责任公司
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