Closed type rubber water stop structure

Abstract

The utility model relates to a closed type rubber water stop structure which comprises two U-shaped closed sections, the two U-shaped closed sections are oppositely buckled to form a closed type structure, and ribbed I-shaped wing plates are arranged on the two sides of the closed type structure to form a water stop belt. The closed structure is arranged in a joint of a concrete building structure, and the I-shaped wing plates with the ribs on the two sides are poured into the concrete building structure. The upstream side of the joint of the closed structure and the concrete building structure is sealed by a joint upstream side auxiliary sealing structure; and the backwater side of the joint of the closed structure and the concrete building structure is sealed by a joint backwater side auxiliary sealing structure. The utility model not only can improve the sealing and water stopping performance, but also can meet the requirement of large settlement difference without failure.

Description

Technical Field

[0001] The utility model relates to the field of water-stop structures, in particular to water-stop structures of expansion joints or settlement joints between newly built concrete building structures, and specifically relates to a closed rubber water-stop structure. Background Art

[0002] During the maintenance and reconstruction of water conservancy and hydropower projects, the problem of sealing the expansion joints or settlement joints of newly built concrete buildings is often encountered. Due to the differences in geological conditions of newly built concrete buildings in different locations, they often face the problem of settlement differences between adjacent buildings. Conventional waterstop types and geometric stretchable lengths are difficult to solve the problem of unknown settlement and settlement differences between new and old concrete. In particular, when there is a large settlement difference, it is difficult to cope with it only by relying on the stretch deformation length of the rubber itself, and it is easy to fail due to tearing. Based on Articles 8.3.6 and 8.3.7 of the SL265 Sluice Design Code, the maximum settlement difference between adjacent parts should not exceed 5cm, and the settlement difference of sluices on soft soil foundations may be even greater. At present, there is no relatively effective waterstop structure on the market that can not only solve the problem of sealing and sealing the joints between newly built building structures, but also meet the problem of large settlement differences without failure.

[0003] To sum up, how to design a waterstop and waterstop structure that can improve the sealing and water-stopping performance, increase the service life, and meet the requirements of uneven settlement, tension, compression, and vibration between the structures of newly built concrete buildings is a problem that needs to be solved urgently. Utility Model Content

[0004] The utility model provides a closed rubber water-stopping structure, which can not only improve the sealing and water-stopping performance, but also meet the large settlement difference without failure.

[0005] The technical solution of this utility model:

[0006] A closed rubber water-stop structure, comprising: two U-shaped closed sections, the two U-shaped closed sections are buckled to form a closed structure, ribbed I-shaped wing plates are arranged on both sides of the closed structure to form a water-stop; the closed structure is placed in the joint of a concrete building structure, and the ribbed I-shaped wing plates on both sides are cast in the concrete building structure respectively;

[0007] The water-facing side of the joint between the closed structure and the concrete building structure is sealed with a joint water-facing side auxiliary sealing structure; the water-repelling side of the joint between the closed structure and the concrete building structure is sealed with a joint water-repelling side auxiliary sealing structure.

[0008] Preferably, the height of the U-shaped closed section is greater than or equal to 5 cm.

[0009] Preferably, the auxiliary sealing structure on the water-facing side of the joint includes a polysulfide sealant arranged at the end of the water-facing surface of the joint and a polyethylene foam board used as a joint filling material.

[0010] Preferably, the auxiliary sealing structure on the back water side of the joint comprises a polyethylene foam board used as a joint filling material.

[0011] Preferably, the polysulfide sealant is located on the outside of the polyethylene foam board.

[0012] Preferably, the end of the ribbed I-shaped wing plate is a wedge-shaped structure.

[0013] Preferably, the two U-shaped closed sections and the ribbed I-shaped wing plate are integrally formed and made of rubber material.

[0014] Preferably, the ribs of the ribbed I-type wing plate are wedge-shaped structures.

[0015] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0016] 1. By adopting the utility model waterstop and waterstop structure, especially the double U-shaped closed section of the closed rubber waterstop structure, which combines the relative sliding of the parallelogram and the rolling characteristics of the circle, and the excellent high elasticity, stress resistance, and wear resistance of the rubber material, and selecting sufficient double U-shaped closed section height and thickness safety margin and waterstop thickness, it can play a significant structural advantage when the building is vibrated, or when an earthquake occurs, or when there is a large settlement difference between the buildings on both sides. The closed rubber waterstop structure has higher safety, suitability and effectiveness. Through verification in the design stage, the selection of appropriate double U-shaped closed section height and thickness dimensions and waterstop thickness can adapt to the expansion and contraction displacement and uneven settlement difference between the new concrete structure, so that the waterstop will not fail due to excessive settlement difference and vibration dislocation, and will not cause safety hazards due to premature tearing and failure.

[0017] 2. The auxiliary sealing structure on the water-facing side of the joint is a polysulfide sealant arranged at the end of the water-facing surface of the joint and a polyethylene foam board used as a joint filling material; the auxiliary sealing structure on the back water side of the joint is a polyethylene foam board used as a joint filling material; to a certain extent, it prevents the external environment from corroding the rubber waterstop, thereby slowing down the aging speed of the waterstop and increasing the life of the waterstop.

[0018] 3. The wedge-shaped structure of the ribs and ends of the ribbed I-type wing plate extends the seepage path, increases the water-stopping surface, and strengthens the anchoring and water-stopping effects.

[0019] 4. The closed rubber water-stop structure of the utility model is produced by extrusion or calendering of rubber material, and is integrally formed for easy preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model.

[0021] Figure 2 It is a three-dimensional diagram of the water stop of the utility model;

[0022] Figure 3 It is a cross-sectional view of the waterstop of the utility model;

[0023] Description of reference numerals: 1. ribbed I-shaped wing plate; 2. concrete building structure; 3. polyethylene foam board; 4. polysulfide sealant; 5. U-shaped closing section;

[0024] H, height of U-shaped closed section; B, thickness of U-shaped closed section; L, width of waterstop. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be noted that the accompanying drawings are designed only for the purpose of explanation and are not intended to limit the scope of the utility model. In order to make the technical means, creative features, objectives and effects of the utility model easy to understand, the structure, characteristics and advantages of the utility model are further described below in conjunction with specific embodiments.

[0026] See also Figure 1-3 A closed rubber water-stop structure comprises: two U-shaped closed sections 5, the height of the U-shaped closed sections 5 is greater than or equal to 5 cm, the two U-shaped closed sections 5 are buckled into a closed structure, ribbed I-shaped wing plates 1 are arranged on both sides of the closed structure to form a water-stop strip, the end of the ribbed I-shaped wing plate 1 is a wedge-shaped structure, and the ribs of the ribbed I-shaped wing plate 1 are wedge-shaped structures; the closed structure is placed in the joint of a concrete building structure 2, and the ribbed I-shaped wing plates 1 on both sides are cast in the concrete building 2 respectively; the closed structure The water-facing side of the joint between the structure and the concrete building structure 2 is sealed with an auxiliary sealing structure on the water-facing side of the joint, and the auxiliary sealing structure on the water-facing side of the joint includes a polysulfide sealant 4 arranged at the end of the water-facing surface of the joint and a polyethylene foam board 3 used as a joint filling material, and the polysulfide sealant 4 is located on the outside of the polyethylene foam board 3; the water-repellent side of the joint between the closed structure and the concrete building structure 2 is sealed with an auxiliary sealing structure on the water-repellent side of the joint, and the auxiliary sealing structure on the water-repellent side of the joint includes a polyethylene foam board 3 used as a joint filling material.

[0027] The two U-shaped closed sections 5 and the ribbed I-shaped wing plate 1 are integrally formed, and the waterstop is made of rubber material. The rubber material is produced by extrusion or calendering, and the production process is relatively simple. The closed structure is placed in the joint of the concrete building structure 2, and the ribbed I-shaped wing plates 1 on both sides are cast in the concrete building 2 respectively, and then the water-facing end is filled and sealed with polysulfide sealant 4 and polyethylene foam board 3, and the polysulfide sealant 4 is located on the outside of the polyethylene foam board 3. Finally, the back water side of the joint is filled and sealed with polyethylene foam board 3, and the construction is completed. To a certain extent, the external environment is prevented from corroding the rubber waterstop, thereby slowing down the aging speed of the waterstop and increasing the life of the waterstop.

[0028] The above preferred embodiments are now specifically applied to water conservancy and hydropower projects, sluice design and construction projects:

[0029] In general, the closed rubber waterstop structure has the following characteristics: the height H of the U-shaped closed section is greater than or equal to 5cm, the thickness B is 2 to 3cm, and the width L of the waterstop is 8 to 12mm. The selection of appropriate height and thickness of the double U-shaped closed section and the thickness of the waterstop can adapt to the expansion displacement and uneven settlement difference between the new concrete structure, so that the waterstop will not fail due to excessive settlement difference and vibration dislocation, and will not cause safety hazards due to premature tearing and failure.

[0030] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A closed rubber water-stop structure, characterized in that: include: Two U-shaped closed sections (5) are buckled together to form a closed structure, and ribbed I-shaped wing plates (1) are provided on both sides of the closed structure to form a water stop; the closed structure is placed in the joint of the concrete building structure (2), and the ribbed I-shaped wing plates (1) on both sides are cast in the concrete building structure (2) respectively; The water-facing side of the joint between the closed structure and the concrete building structure (2) is sealed with a joint water-facing side auxiliary sealing structure; the water-repellent side of the joint between the closed structure and the concrete building structure (2) is sealed with a joint water-repellent side auxiliary sealing structure.

2. A closed rubber water-stop structure according to claim 1, characterized in that: The height of the U-shaped closed section (5) is greater than or equal to 5 cm.

3. A closed rubber water-stop structure according to claim 1, characterized in that: The auxiliary sealing structure on the water-facing side of the joint comprises a polysulfide sealant (4) arranged at the end of the water-facing surface of the joint and a polyethylene foam board (3) used as a joint filling material.

4. A closed rubber water-stop structure according to claim 1, characterized in that: The auxiliary sealing structure on the back water side of the joint comprises a polyethylene foam board (3) used as a joint filling material.

5. A closed rubber water-stop structure according to claim 3, characterized in that: The polysulfide sealant (4) is located on the outside of the polyethylene foam board (3).

6. The closed rubber water-stop structure according to claim 1, characterized in that: The end of the ribbed I-shaped wing plate (1) is a wedge-shaped structure.

7. The closed rubber water-stop structure according to claim 1, characterized in that: The two U-shaped closed sections (5) and the ribbed I-shaped wing plate (1) are integrally formed and made of rubber material.

8. The closed rubber water-stop structure according to claim 1, characterized in that: The ribs of the ribbed I-shaped wing plate (1) are wedge-shaped structures.

Images