A cross-shaped water-stop sealing structure and construction method for controlling deformation joint leakage

Abstract

The present invention relates to a cross-shaped water-stop sealing structure and construction method for treating leakage in deformation joints. A cross-shaped water-stop sealing is used in the leaking deformation joints to form a cross-shaped sealing structure with a deformation amount that can adapt to a larger gap. During construction, the leaking deformation joints and settlement joints are first sealed, and then the evacuation structures on both sides are repaired and the seams are cleaned; after the cleaning is completed, an extruded board is inserted and the first mortar filling construction is carried out, and the first mortar filling depth is half of the seam depth; then a U-shaped groove is placed with the groove facing the extruded board; a second mortar repair is carried out to the outer surface of the structure; after the repair mortar is solidified, the extruded board is hooked out, and then compression sealing rubber is constructed; after the compression sealing rubber is formed into a ring, grouting is started to form a cross-shaped water-stop sealing structure; finally, weather-resistant sealant is constructed on the outermost side to improve the pressure resistance of the water-stop structure. The present invention is suitable for treating leakage in deformation joints and settlement joints, and is particularly suitable for treating leakage in deformation joints with large deformation amounts in winter and summer.

Description

Technical Field

[0001] The invention relates to a sealing structure and a construction method for treating leakage of a deformation joint, and in particular to a cross water-stop sealing structure and a construction method for treating leakage of a deformation joint. Background Art

[0002] Underground concrete structures require structural features such as thermal expansion joints and settlement joints. Their waterproofing relies primarily on embedded waterstops, but due to limitations in process and construction, nine out of ten embedded waterstops leak. Currently, a large number of underground structures, especially underground stations and shopping malls, face significant operational challenges due to leakage.

[0003] Leakage treatment often relies on injection grouting, but due to the changing gaps and inherent material properties, leakage can quickly recur. The industry also has a number of new technologies, such as compression sealing, which creates a new waterproofing system through extrusion. However, the rubber's adaptability is limited to 25% of its diameter, which can cause leakage in shallow areas in northern China or in the extremely cold weather of the Yangtze River Basin. Summary of the Invention

[0004] In view of the defects existing in the above-mentioned prior art, the present invention proposes a cross water-stop sealing structure and construction method for controlling leakage of deformation joints.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a cross water-stop sealing structure for controlling leakage in deformation joints, which is characterized by: including a cross water-stop seal, repair mortar, compression sealing rubber, and weather-resistant sealant. A cross water-stop seal is used in the leakage deformation joint to form a cross sealing structure with good ductility, which can adapt to the deformation of a larger gap.

[0006] Furthermore, a U-shaped groove is provided in the middle of the leakage deformation joint, and the opening of the U-shaped groove faces the extruded plate to form a mold for the subsequent cross sealing structure.

[0007] Furthermore, the repair mortar is filled twice during construction. After the mortar repair is completed, compressed sealing rubber is used as the external seal for grouting. The grouting needle directly passes through the side of the rubber for grouting and observation holes to ensure the grouting effect.

[0008] Furthermore, acrylate grouting material is used for grouting to form a cross waterstop seal.

[0009] Furthermore, the compression rubber seal forms a seal through extrusion force, and the weather-resistant sealant connects to the joint through adhesion force, finally forming a strong pressure resistance and weather resistance.

[0010] A construction method for treating expansion joint leakage adopts a cross water-stop sealing structure for treating expansion joint leakage, firstly, leaking expansion joints and settlement joints are sealed, then evacuation structures on both sides are repaired and the inside of the joints are cleaned; after the cleaning is completed, an extruded board is inserted, and then a first mortar filling construction is carried out, and the first mortar filling depth is half of the joint depth; then a U-shaped groove is placed with the groove facing the extruded board; then a second mortar repair is carried out to the outer surface of the structure; after the repair mortar is cured, the extruded board is hooked out and cleaned, and then compression sealing rubber is applied; after the compression sealing rubber is formed into a ring, grouting is started, and acrylate is used as the slurry. After the acrylate filling is completed, a cross water-stop sealing structure is formed; finally, weather-resistant sealant is applied on the outermost side to improve the pressure resistance of the water-stop structure.

[0011] The beneficial effects of the present invention are:

[0012] The cross water-stop sealing structure adopted in the present invention greatly improves the deformation resistance of the waterproof system through the ductility and structural advantages of the material itself, thereby adapting to the larger deformation requirements of the seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the cross water-stop seal structure of the present invention. DETAILED DESCRIPTION

[0014] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0015] like Figure 1 As shown, the cross water-stop sealing structure for controlling deformation joint leakage of the present invention includes a cross water-stop seal 3, a repair mortar 4, a compression sealing rubber 5, and a weather-resistant sealant 6.

[0016] The newly constructed cross-shaped waterstop seal 3 forms a cross-shaped structure, inherently ductile and adaptable to large gap deformations. The repair mortar 4 is filled in two stages during construction. A U-shaped groove is placed in the center of the leaking deformation joint, with the U-shaped groove opening facing the extruded board, forming a mold for the subsequent cross-shaped seal. After the mortar repair is completed, a compression sealant 5 is used as the external seal for grouting. The grouting needle 2 can be directly inserted through the side of the compression sealant 5 for grouting and observation holes, ensuring the grouting effect.

[0017] Acrylate grouting material is used for grouting to form a cross water-stop seal 3. The cross water-stop seal 3 has a good ability to adapt to deformation in terms of its own material and structure.

[0018] The compression rubber seal 5 forms a seal through extrusion force, and the weather-resistant sealant 6 is connected to the joint through bonding force, finally forming a strong pressure resistance and weather resistance.

[0019] The construction method of the present invention is as follows:

[0020] 1. First, seal the leaking deformation joints, settlement joints and other true joints, and then repair the evacuation structures 1 on both sides and clean the seams;

[0021] 2. After cleaning, insert the extruded board, and then carry out the first mortar filling construction. The first mortar filling depth is half of the seam depth; then put it into the U-shaped groove with the groove facing the extruded board; and then carry out the second mortar repair to the outer surface of the structure;

[0022] 3. After the repair mortar solidifies, remove the extruded board, clean it, and then apply the compressed sealing rubber;

[0023] 4. After the sealing rubber is compressed into a ring, grouting begins. Acrylate is used as the slurry. After the acrylate filling is completed, a cross water-stop sealing structure is formed;

[0024] 5. Finally, apply weather-resistant sealant on the outermost surface to improve the compressive resistance of the water-stopping structure.

Claims

1. A cross-shaped water-stop sealing structure for controlling expansion joint leakage, characterized by: It includes cross water-stop seal, repair mortar, compression sealing rubber, and weather-resistant sealant. The cross water-stop seal is used in the leakage deformation joint to form a cross sealing structure with good ductility and can adapt to the deformation of large gaps. A U-shaped groove is set in the middle of the leakage deformation joint, and the U-shaped groove is notched toward the extruded board to form a mold for the subsequent cross sealing structure. The repair mortar is filled twice during construction. After the mortar repair is completed, compressed sealing rubber is used as the external seal for grouting. The grouting needle directly passes through the side of the rubber for grouting and observation holes to ensure the grouting effect; acrylate grouting material is used for grouting to form a cross waterstop seal; the compressed rubber seal forms a seal through extrusion force, and the weather-resistant sealant is connected to the joint through bonding force, finally forming strong pressure resistance and weather resistance.

2. A construction method for treating expansion joint leakage, using the cross-shaped water-stop sealing structure for treating expansion joint leakage according to claim 1, characterized in that: First, seal the leaking deformation joints and settlement joints, then repair the evacuation structures on both sides and clean the joints; after cleaning, insert the extruded board, and then carry out the first mortar filling construction, the first mortar filling depth is half of the joint depth; then put it into the U-shaped groove with the groove facing the extruded board; then carry out the second mortar repair to the outer surface of the structure; after the repair mortar solidifies, hook out the extruded board, clean it, and then construct the compression sealing rubber; after the compression sealing rubber is formed into a ring, start grouting, and use acrylate as the slurry. After the acrylate filling is completed, a cross water-stop sealing structure is formed; finally, apply weather-resistant sealant on the outermost side to improve the pressure resistance of the water-stop structure.

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