Waterproof repairing structure for expansion joint

Abstract

The utility model relates to the technical field of building waterproof repairing, in particular to an expansion joint waterproof repairing structure. The utility model provides a waterproof repairing structure for an expansion joint. The waterproof repairing structure comprises an elastic filling body, a fixed pressure-resistant plate and a waterproof cover, the cross section of the elastic filling body is of a T-shaped structure, the elastic filling body comprises a filling part in the middle and connecting parts on the two sides of the top, a cavity is formed in the filling part, and the filling part is located in the expansion joint needing to be repaired; a flexible waterproof layer and a high-viscosity sealing layer are sequentially arranged on the outer surface of the filling part from inside to outside; the fixed pressure-resistant plates are located at the connecting parts on the two sides of the upper portion of the elastic filling body, a plurality of connecting rods are connected between the fixed pressure-resistant plates on the two sides in an inserted mode, and the two ends of the fixed pressure-resistant plates are fixedly connected with the two sides of the expansion joint through bolts; the waterproof cover wraps the elastic filling body and the fixed pressure-resistant plate, and the waterproof cover is of a herringbone structure with the high middle and the two low sides.

Description

TECHNICAL FIELD

[0001] The utility model relates to building waterproof repair technical field, concretely relates to a waterproof repair structure of expansion joint. BACKGROUND

[0002] Expansion joint is the gap reserved in building structure, is used to adapt to the structural deformation caused by temperature change, concrete shrinkage, foundation settlement and other factors, prevents the building from cracking due to stress concentration. Expansion joint is widely used in bridge, tunnel, building floor and other projects, and its waterproof performance directly influences the service life and safety of building. During the use of expansion joint, due to the influence of load, temperature change, rain erosion and other factors for a long time, the original waterproof layer is easy to age, crack or fall off, leading to water seepage problem. Water seepage not only can accelerate the corrosion of steel bar, concrete deterioration, but also can influence the stability of building structure. Therefore, it is crucial to carry out regular waterproof repair to expansion joint.

[0003] At present, expansion joint repair mainly uses joint filling glue, waterproof roll material or metal cover plate to repair, but the traditional joint filling material (such as polyurethane glue) is easy to age, crack during the repair process, and the adhesion with the base surface is invalid after long-term use, leading to leakage, and the ordinary waterproof layer is difficult to adapt to the dynamic deformation of expansion joint, and is easy to break after repeated stretching. UTILITY MODEL CONTENT

[0004] The utility model provides a waterproof repair structure of expansion joint, and aims at solving the problems of easy aging and poor deformation resistance of the waterproof layer of expansion joint in the prior art.

[0005] To solve the above technical problems, the utility model provides a waterproof repair structure of expansion joint, which comprises an elastic filling body, a fixed compression plate and a waterproof cover.

[0006] The cross section of the elastic filling body is in T-shaped structure, comprising a filling part in the middle and connecting parts on both sides of the top, and a cavity is arranged in the filling part, wherein the filling part is located in the expansion joint to be repaired;

[0007] The outer surface of the filling part is sequentially provided with a flexible waterproof layer and a high-adhesion sealing layer from inside to outside;

[0008] The fixed compression plate is located at the connecting parts on both sides of the elastic filling body, a plurality of connecting rods are inserted between the fixed compression plates on both sides, and the two ends of the fixed compression plate are fixedly connected with the two sides of the expansion joint through bolts;

[0009] The waterproof cover is covered on the elastic filling body and the fixed compression plate, and the waterproof cover is in the shape of a herringbone with high middle and low sides.

[0010] As a preferred embodiment of this utility model, the elastic filler is made of butyl rubber, and the height of the top of the elastic filler gradually decreases from the middle to both sides.

[0011] As a preferred technical solution of this utility model, the elastic filler body is provided with an L-shaped reinforcing rib connecting the elastic filler body and the connecting part, and the reinforcing rib is a spiral stainless steel wire or carbon fiber bundle.

[0012] As a preferred embodiment of this utility model, the cavity is filled with either compressed gas or low-density foam material, and the cavity volume accounts for 30%-60% of the total volume of the filling part.

[0013] As a preferred technical solution of this utility model, the flexible waterproof layer is one of EPDM rubber roll or polyurea coating, with an elongation of ≥300% and a thickness of 1.5-3mm.

[0014] As a preferred embodiment of this utility model, the high-viscosity sealing layer is either butyl rubber tape or polyurethane sealant, with a thickness of 3-8 mm and an adhesion strength greater than or equal to 0.8 MPa.

[0015] As a preferred technical solution of this utility model, the fixed pressure-resistant plate is a stainless steel or aluminum alloy plate, and the fixed pressure-resistant plate is equidistantly arranged above the elastic filler. The bolt connection at both ends of the fixed pressure-resistant plate is located on the outer side of the edge of the connection part. Multiple reinforcing plates matching the internal shape of the waterproof cover are arranged above the fixed pressure-resistant plate.

[0016] As a preferred technical solution of this utility model, the two ends of the waterproof cover abut against the base surfaces on both sides of the expansion joint, the inner sides of the two ends of the waterproof cover are provided with positioning plates, and the outer edge of the fixed pressure plate is provided with fitting grooves that match the shape of the positioning plates.

[0017] The advantages of this utility model compared with the prior art are as follows:

[0018] 1. This expansion joint waterproof repair structure adopts a double protection of a flexible waterproof layer and a high-viscosity sealing layer to fill and seal the expansion joint, which can effectively waterproof it. At the same time, combined with the cavity buffer design, it can effectively adapt to the dynamic deformation of the expansion joint. Furthermore, the fixed pressure plate set on the top of the elastic filler can fix the waterproof cover, waterproofing from above. The fixed pressure plates on both sides are connected by multiple connecting rods, which improves the overall integrity and allows for dynamic changes in the lateral distance.

[0019] 2. This expansion joint waterproof repair structure features a modular design, making installation easy. Subsequent maintenance only requires replacing certain parts, reducing repair costs. Attached Figure Description

[0020] Fig. 1 This is a cross-sectional view of a waterproof repair structure for expansion joints according to this utility model.

[0021] Fig. 2 This is an enlarged view of section A of the waterproof repair structure for expansion joints according to this utility model.

[0022] Fig. 3 This is an exploded structural diagram of a waterproof repair structure for expansion joints according to this utility model.

[0023] As shown in the figure:

[0024] 1. Elastic filler; 2. Fixed pressure plate; 3. Waterproof cover; 4. Filler part; 5. Connecting part; 6. Cavity; 7. Expansion joint; 8. Flexible waterproof layer; 9. High-viscosity sealing layer; 10. Multiple connecting rods; 11. Bolt; 12. Reinforcing rib; 13. Multiple reinforcing plates; 14. Positioning plate; 15. Fitting groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1:

[0028] As per the instruction manual Figs. 1-3 As shown, a waterproof repair structure for expansion joints includes an elastic filler 1, a fixed pressure-resistant plate 2, and a waterproof cover 3.

[0029] In this utility model, the cross-section of the elastic filler 1 is T-shaped, including the middle filling part 4 and the connecting parts 5 on both sides of the top. The elastic filler 1 is made of butyl rubber, and the height of the top of the elastic filler 1 gradually decreases from the middle to both sides, guiding the water flow from the middle to both sides. The elastic filler 1 is provided with L-shaped reinforcing ribs 12 that connect the elastic filler 1 and the connecting parts 5. The reinforcing ribs 12 are spiral stainless steel wires or carbon fiber bundles to enhance the strength of the elastic filler. The filling part 4 is provided with a cavity 6 inside, wherein the filling part 4 is located inside the expansion joint 7 to be repaired. The cavity 6 is filled with one of compressed gas or low-density foam material. The volume of the cavity 6 accounts for 30%-60% of the total volume of the filling part 4, and the elastic filler 1 can adapt to the dynamic deformation of the expansion joint 7 through the cavity 6.

[0030] In this utility model, a flexible waterproof layer 8 and a high-adhesion sealing layer 9 are sequentially provided on the outer surface of the filling part 4 from the inside to the outside. The flexible waterproof layer 8 is one of EPDM rubber roll material or polyurea coating, with an elongation of ≥300% and a thickness of 1.5-3mm. The high-adhesion sealing layer 9 is one of butyl rubber tape or polyurethane sealant, with a thickness of 3-8mm and an adhesion strength greater than or equal to 0.8MPa.

[0031] In this utility model, the fixed pressure-resistant plate 2 is located at the connecting part 5 on both sides above the elastic filler 1, and multiple connecting rods 10 are inserted between the fixed pressure-resistant plates 2 on both sides, so that the fixed pressure-resistant plates 2 on both sides can adapt to the dynamic deformation of the expansion joint 7 while maintaining the integrity. The two ends of the fixed pressure-resistant plate 2 are fixedly connected to the two sides of the expansion joint 7 by bolts 11. The fixed pressure-resistant plate 2 is made of stainless steel or aluminum alloy plate, and the fixed pressure-resistant plate 2 is equidistantly arranged above the elastic filler 1. The bolt 11 connection at both ends of the fixed pressure-resistant plate 2 is located on the outer side of the edge of the connecting part 5. Multiple reinforcing plates 13 that match the internal shape of the waterproof cover 3 are provided above the fixed pressure-resistant plate 2.

[0032] In this utility model, the waterproof cover 3 covers the elastic filler 1 and the fixed pressure plate 2. The waterproof cover 3 has a herringbone structure with a high middle and low sides. The two ends of the waterproof cover 3 abut against the base surfaces on both sides of the expansion joint 7. The inner sides of the two ends of the waterproof cover 3 are provided with positioning plates 14, and the outer edge of the fixed pressure plate 2 is provided with fitting grooves 15 that match the shape of the positioning plates 14.

[0033] In the specific implementation of this utility model, first clean the debris inside the expansion joint 7 to ensure that the base surface is dry and flat; then embed the elastic filler 1 into the expansion joint 7 and bond it tightly to the joint wall and the base surface on both sides of the expansion joint 7 through the external high-viscosity sealing layer 9; then install and fix the anti-pressure plate 2 with bolts 11, and finally cover it with a waterproof cover 3 to ensure that it fits the base surface on both sides of the expansion joint 7, thus completing the repair.

[0034] The flexible waterproof layer 8 and the high-viscosity sealing layer 9 form a double waterproof barrier to prevent water from seeping in; the cavity 6 structure of the elastic filler 1 is compressible and resilient, adapting to the deformation of the expansion joint 7; the fixed pressure plate 2 and the waterproof cover 3 provide mechanical support to prevent damage from external forces and extend service life.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A waterproofing structure for a contraction joint, characterized by: It comprises an elastic filling body (1), a fixed compression plate (2) and a waterproof cover (3); The cross section of the elastic filling body (1) is T-shaped structure, comprising a filling part (4) in the middle and connecting parts (5) on both sides of the top, and the inside of the filling part (4) is provided with a cavity (6), wherein the filling part (4) is located inside the expansion joint (7) to be repaired; The outer surface of the filling part (4) is sequentially provided with a flexible waterproof layer (8) and a high-adhesion sealing layer (9) from inside to outside; The fixed compression plate (2) is located at the connecting parts (5) on both sides of the elastic filling body (1) above, and a plurality of connecting rods (10) are inserted between the fixed compression plates (2) on both sides, and the two ends of the fixed compression plate (2) are fixedly connected with the expansion joint (7) on both sides through bolts (11); The waterproof cover (3) covers the elastic filling body (1) and the fixed compression plate (2) above, and the waterproof cover (3) is a herringbone structure with high middle and low sides.

2. The waterproofing structure for a construction joint according to claim 1, wherein: The elastic filling body (1) is made of butyl rubber material, and the height of the top of the elastic filling body (1) gradually decreases from the middle to both sides.

3. The waterproofing structure for a construction joint according to claim 1, wherein: The elastic filling body (1) is provided with a reinforcing rib (12) of L-shaped structure connecting the elastic filling body (1) and the connecting part (5), and the reinforcing rib (12) is a spiral stainless steel wire or a carbon fiber bundle.

4. The waterproofing structure for a construction joint according to claim 1, wherein: The cavity (6) is filled with one of compressed gas or low-density foam material, and the volume of the cavity (6) accounts for 30%-60% of the total volume of the filling part (4).

5. The waterproofing structure for a construction joint according to claim 1, wherein: The flexible waterproof layer (8) is one of EPDM coiled material or polyurea coating, and the elongation rate thereof is ≥300%, and the thickness is 1.5-3mm.

6. The waterproofing structure for a construction joint according to claim 1, wherein: The high-adhesion sealing layer (9) is one of butyl rubber tape or polyurethane sealant, and the thickness is 3-8mm, and the bonding strength is greater than or equal to 0.8MPa.

7. The waterproofing structure for a construction joint according to claim 1, wherein: The fixed compression plate (2) is a stainless steel or aluminum alloy plate, and the fixed compression plates (2) are equidistantly arranged above the elastic filling body (1), the bolt (11) connection at the two ends of the fixed compression plate (2) is located outside the edge of the connecting part (5), and a plurality of reinforcing plates (13) matching the internal shape of the waterproof cover (3) are arranged above the fixed compression plate (2).

8. The waterproofing structure for a construction joint according to claim 1, wherein: The two ends of the waterproof cover (3) abut against the base surfaces on both sides of the expansion joint (7), the inner side of the two ends of the waterproof cover (3) is provided with a positioning plate (14), and the outer edge of the fixed compression plate (2) is provided with a matching slot (15) matching the shape of the positioning plate (14).

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