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A structural joint surface water-stop structure for tunnels and open channels and its construction method

A construction method and technology of structural joints, applied in water conservancy projects, marine engineering, artificial waterways, etc., can solve the problem that the surface water-stop structure cannot be directly applied to tunnels or open channels, etc., and achieve the ability to avoid water head loss, high adaptability to deformation, and stop The effect of improving water safety

Active Publication Date: 2022-04-12
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a structure seam surface water-stop structure for tunnels and open channels and its construction method to solve the problem that the existing surface water-stop structures cannot be directly applied to tunnels or open channels

Method used

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  • A structural joint surface water-stop structure for tunnels and open channels and its construction method

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Embodiment 1

[0040] Please refer to figure 1 , a structural joint surface water-stop structure for tunnels and open channels, including: a groove arranged along the surface of the structural joint and riding on the structural joint, and a closed joint plate 70 is embedded in the structural joint at the bottom of the groove to facilitate subsequent leveling Layer 10 settings. A leveling layer 10 , a support body 20 , an anti-seepage layer 30 , a waterproof layer 40 , and a backfill layer 50 are sequentially provided in the groove from the inside to the outside of the structural joint.

[0041] The leveling layer 10 is formed by coating the bottom of the groove with high-strength concrete mortar material, and the closed joint plate 70 can prevent the mortar material from flowing into the structural joint, thereby facilitating the formation of the leveling layer 10 . The support body 20 is a rubber rod with a circular cross section. The support body 20 is arranged along the extension directi...

Embodiment 2

[0046] A construction method for the structural joint surface water-stop structure of tunnels and open channels in Embodiment 1, comprising the following steps:

[0047] S1: Groove construction: set a groove on the surface of the structural joint that rides on the structural joint 80. The groove is rectangular, and obviously a trapezoidal groove can also be set; two ways can be used to set the rectangular groove. First, in the During the construction of the structural joint 80 (that is, when pouring the concrete body), a rectangular groove is reserved on the surface of the structural joint 80. After the construction of the structural joint 80 is completed, the bottom and side walls of the rectangular groove are trimmed. Second, Rectangular grooves are not reserved during the construction of the structural joint 80, and after the construction of the structural joint 80 is completed, the rectangular groove is cut out with a cutting tool; in this embodiment, the second rectangular...

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Abstract

The invention discloses a structural seam surface water-stop structure for tunnels and open channels and a construction method thereof, belonging to the technical field of water-stop structures. A structural joint surface water-stop structure for tunnels and open channels, comprising: a groove arranged on the surface of the structural joint, in which a leveling layer, a support body, an anti-seepage layer, Waterproof layer and backfill layer; the support body is provided with filler blocks near the leveling layer, both ends of the anti-seepage layer and waterproof layer are close to the side wall of the groove, the anti-seepage layer and waterproof layer are supported by the support body and the filler block, and the cross-section They are all M-shaped, and the backfill layer fills the space formed by the side wall of the groove and the waterproof layer. The surface water-stop structure of the present invention has a high ability to adapt to deformation, and can not be deformed or damaged under the action of internal water pressure and external water pressure. At the same time, the surface water-stop structure is flush with the concrete constructed in advance to avoid Causes a large head loss and is suitable for structural joints in tunnels and open channels.

Description

technical field [0001] The invention relates to the technical field of water-stop structures, in particular to a structure joint surface water-stop structure for tunnels and open channels and a construction method thereof. Background technique [0002] The most widely used water-stop structures in hydraulic concrete structures are built-in water-stops, including rubber water-stop strips, copper water-stop sheets, stainless steel water-stop plates, etc. Their common feature is that the construction of the water stop is carried out simultaneously with the concrete pouring, and the two sides of the water stop are respectively poured into the concrete bodies on both sides of the structural joint, so as to play the role of water sealing of the structural joint. For the part in the middle of the structural joint, the water-stop structure is designed to be wave-shaped, V-shaped, circular or U-shaped, so as to adapt to the relative deformation of both sides of the structural joint. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/16E02B5/02
CPCE02B3/16E02B5/02
Inventor 贾金生郑璀莹韩瑞坤史婉丽吴洋锋
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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