LUUI closed type rubber waterstop and waterstop structure used at joint of new and old buildings

Abstract

The utility model belongs to the technical field of water stop structures, and particularly relates to an LUUI closed type rubber water stop belt and a water stop structure used at the joint of a new building and an old building. The water stop belt comprises a double-U-shaped sealing belt, an L-shaped wing plate belt and an I-shaped wing plate belt. The double-U-shaped sealing belt is formed by oppositely buckling two U-shaped belts to form a sealed whole; the L-shaped wing plate belt and the I-shaped wing plate belt are fixed to the two opposite sides of the double-U-shaped closed belt respectively. The water stop structure comprises an L-shaped groove body formed in the side, close to a joint, of an original building, and an L-shaped wing plate strip is matched with the L-shaped groove body and fixed to the L-shaped groove body. The double-U-shaped sealing belt is arranged in a joint of an original building and a new building, and the width B of the double-U-shaped sealing belt is matched with the width of the joint. And the I-shaped wing plate strip is poured in a new building. The LUUI closed type rubber waterstop and the waterstop structure can adapt to telescopic displacement and uneven settlement difference between new and old building concrete, so that the waterstop does not lose efficacy due to overlarge settlement difference and vibration dislocation, and potential safety hazards caused by premature tearing failure are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of water-stopping structures, in particular to a LUUI closed rubber water-stopping belt and a water-stopping structure used for joints of new and old buildings. 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 new and old concrete buildings is often encountered. Due to the different construction times and geological conditions of new and old concrete buildings, the problem of settlement differences between adjacent buildings is often faced. Conventional waterstop types and geometric stretchable lengths are difficult to solve the problem of unknown settlement amounts 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. According to the corresponding sluice design specifications, 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. However, there is currently no relatively effective waterstop structure on the market that can solve the sealing and water-stopping problem on the side of the original building and meet the large settlement difference without failure. Utility Model Content

[0003] The utility model aims to provide a LUUI closed rubber water stop and a water stop structure for the joints of new and old buildings, so as to solve the problems raised in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A LUUI closed rubber waterstop comprises a double U-shaped closed belt, an L-shaped wing belt and an I-shaped wing belt; the double U-shaped closed belt is formed by two U-shaped belts buckled together to form a closed whole; the L-shaped wing belt and the I-shaped wing belt are respectively fixed on the opposite sides of the double U-shaped closed belt.

[0006] Furthermore, the ends of the L-shaped wing plate belt and the I-shaped wing plate belt away from the double U-shaped closing belt are both provided with a wedge-shaped structure which is wider at the top and narrower at the bottom.

[0007] Further, a water-stopping structure for the joint of new and old concrete buildings comprises an L-shaped trough body opened on one side of the original building close to the joint, and the L-shaped wing plate belt is adapted and fixed to the L-shaped trough body;

[0008] The double U-shaped sealing strip is placed in the joint between the original building and the new building, and the width B of the double U-shaped sealing strip is adapted to the width of the joint;

[0009] The I-shaped wing strips are cast in the new building.

[0010] Furthermore, polyethylene foam boards are provided as filling materials in the joint spaces on both sides of the double U-shaped sealing belt.

[0011] Furthermore, a polysulfide sealant is provided at the end of the joint on the water-facing side as an auxiliary seal.

[0012] Furthermore, the groove surface of the L-shaped groove body is waterproof and sealed by epoxy structural adhesive material.

[0013] Furthermore, a pressure plate is provided on the side of the L-shaped wing plate facing the joint, and the two sides of the pressure plate are respectively fitted with the L-shaped wing plate and the L-shaped groove body; the expansion bolts pass through the L-shaped wing plate and the pressure plate and are fixed by bolts; the two ends of the expansion bolts are buried in the concrete of the original building through preset positioning holes.

[0014] Furthermore, the surfaces of the pressing plate and the expansion bolts are coated with epoxy resin glue.

[0015] Furthermore, the groove surface of the L-shaped groove body is sealed by epoxy resin mortar, and the epoxy resin mortar covers the pressure plate, expansion bolts and L-shaped wing plate.

[0016] Furthermore, a trapezoidal structure adapted to the wedge-shaped structure of the L-shaped wing plate belt is provided on the top of the L-shaped trough body.

[0017] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0018] 1. By adopting the utility model waterstop and waterstop structure, especially the double U-shaped closed section of the LUUI closed rubber waterstop, which combines the relative sliding of the parallelogram and the rolling characteristics of the circle, coupled with the excellent high elasticity, stress resistance, and wear resistance of the rubber material, it can play a significant structural advantage when the building is vibrated, or an earthquake occurs, or when there is a large settlement difference between the buildings on both sides. The LUUI closed rubber waterstop has higher safety, suitability and effectiveness. Through verification in the design stage, the appropriate waterstop size is selected to adapt to the expansion and contraction displacement and uneven settlement difference between the concrete of the new and old buildings, 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.

[0019] 2. The L-shaped wing plate is embedded in the trapezoidal groove to extend the seepage path, increase the water-stopping surface, and enhance the anchoring and water-stopping effects.

[0020] 3. The L-shaped wing plate with a wedge-shaped structure at the end can improve the sealing and water-stopping effects when subjected to stress.

[0021] 4. The epoxy structural adhesive material brushed between the L-shaped wing plate and the L-shaped trough has good affinity with the rubber used in the waterstop. At the same time, it can make up for the flatness defects of the concrete base surface caused by excavation and grinding, increase the fit and airtightness, and thus increase the water-stopping effect.

[0022] 5. The anchoring structure using stainless steel pressure plates and stainless steel expansion bolts can reduce the probability of concrete cracking due to rust and reduce the probability of damage and failure of the anchor seal.

[0023] 6. The surface of the L-shaped trough is sealed with epoxy resin mortar, which has good bonding strength with the previously poured trough concrete, ensuring the bonding between the new and old concrete, and is impact-resistant, vibration-resistant and tough.

[0024] 7. The auxiliary sealing structure at the end of the joint facing the water is polysulfide sealant, and the filling material in the joint is polyethylene foam board, which to a certain extent prevents the corrosion of the rubber waterstop by the external environment, thereby slowing down the aging speed of the waterstop and increasing the life of the waterstop.

[0025] 8. The trapezoidal ribs of the ribbed I-type wing plate and the wedge-shaped structure of the end extend the seepage path and enhance the anchoring effect.

[0026] 9. The utility model LUUI closed rubber water stop can generally be produced by using rubber materials through extrusion or calendaring methods, and the production process is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a three-dimensional diagram of the water stop of the utility model;

[0029] Figure 2 It is a front view of the water stop of the utility model;

[0030] Figure 3 It is a top view of the water-stop structure of the utility model.

[0031] Description of reference numerals:

[0032] In the figure: 1. water stop; 11. double U-shaped closing strip; 12. L-shaped wing strip; 13. I-shaped wing strip; 2. original building; 3. new building; 4. L-shaped trough; 5. pressure plate; 6. expansion bolt; 7. joint; 8. polysulfide sealant; 9. filling material. DETAILED DESCRIPTION

[0033] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0034] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0035] Example 1

[0036] like Figure 1 to Figure 2 As shown, a LUUI closed rubber water stop 1, the water stop 1 comprises a double U-shaped closed belt 11, an L-shaped wing belt 12 and an I-shaped wing belt 13; the double U-shaped closed belt 11 is formed by two U-shaped belts buckled to form a closed whole; the L-shaped wing belt 12 and the I-shaped wing belt 13 are respectively fixed on the opposite sides of the double U-shaped closed belt 11; the ends of the L-shaped wing belt 12 and the I-shaped wing belt 13 away from the double U-shaped closed belt 11 are both provided with a wedge-shaped structure with a wide top and a narrow bottom. In order to avoid reducing water leakage points, the entire water stop 1 is formed in one piece, and the size can be customized according to relevant standards and actual needs to reduce the number of joints.

[0037] Example 2

[0038] The present embodiment discloses a water-stopping structure for a joint 7 of a new and old concrete building, the water-stopping structure comprising an L-shaped trough body 4 opened on one side of the original building 2 near the joint 7, the L-shaped wing plate belt 12 being installed in the L-shaped trough body 4, a trapezoidal structure matching the wedge-shaped structure of the L-shaped wing plate belt 12 being provided on the top of the L-shaped trough body 4, extending the seepage path, increasing the water-stopping surface, and enhancing the anchoring effect and the water-stopping effect; during construction, firstly, an L-shaped trough body 4 matching the L-shaped wing plate is excavated near the joint 7 of the original building 2, and then a positioning hole is drilled, and an appropriate amount of epoxy structural adhesive material is brushed on the groove surface of the L-shaped trough body 4 for waterproof sealing, and then the L-shaped wing plate belt and the stainless steel pressure plate 5 are anchored in the L-shaped trough body 4 with stainless steel expansion bolts 6; since the L-shaped wing plate belt is elastic, the stainless steel pressure plate can be pressed against the L-shaped wing plate belt during the anchoring process, thereby enhancing the installation stability of the water-stop belt. After the stainless steel pressing plate 5 and the stainless steel expansion bolt 6 are evenly coated with epoxy resin glue, the groove surface of the L-shaped groove body 4 is sealed with epoxy resin mortar. In this technical solution, the positioning hole, the stainless steel expansion bolt 6 and the stainless steel pressing plate 5 constitute the anchoring structure of the water stop belt 1 body. The epoxy structural adhesive bonding material and the epoxy resin mortar constitute the sealing body of the anchoring structure.

[0039] The double U-shaped sealing belt 11 is placed in the joint 7 between the original building 2 and the new building 3, and the width B of the double U-shaped sealing belt 11 is adapted to the width of the joint 7; polyethylene foam boards are provided as filling materials 9 in the joint 7 space on both sides of the double U-shaped sealing belt 11, and polysulfide sealant 8 is also provided at the end of the joint 7 on the water-facing side as an auxiliary seal. Depending on the soil quality, the concrete of the new and old buildings will produce uneven settlement. Since the double U-shaped sealing belt has a strip cavity inside, when there is a settlement difference at the foundation joint, the double U-shaped sealing belt can be twisted up and down to reduce tearing, thereby improving the water-stopping effect and safety.

[0040] The I-shaped wing strip 13 is cast in the new building 3, thereby achieving a good water-stopping effect.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A LUUI closed rubber waterstop, characterized by: It comprises a double U-shaped closing belt, an L-shaped wing belt and an I-shaped wing belt; the double U-shaped closing belt is formed by two U-shaped belts buckled to form a closed whole; the L-shaped wing belt and the I-shaped wing belt are respectively fixed on the opposite sides of the double U-shaped closing belt.

2. The LUUI closed rubber waterstop as claimed in claim 1, characterized in that: The ends of the L-shaped wing plate belt and the I-shaped wing plate belt away from the double U-shaped closing belt are both provided with a wedge-shaped structure which is wide at the top and narrow at the bottom.

3. A water-stopping structure for the joints between new and old buildings, wherein the new and old buildings are concrete structures; characterized in that: The water stop structure contains the LUUI closed rubber water stop strip as claimed in claim 2, and the water stop structure includes an L-shaped groove body opened on one side of the original building close to the joint, and the L-shaped wing plate belt is adapted and fixed to the L-shaped groove body; The double U-shaped sealing strip is placed in the joint between the original building and the new building, and the width B of the double U-shaped sealing strip is adapted to the width of the joint; The I-shaped wing strips are cast in the new building.

4. The water-stopping structure for the joints of new and old buildings as claimed in claim 3, characterized in that: Polyethylene foam boards are provided as filling materials in the joint spaces on both sides of the double U-shaped sealing belt.

5. The water-stopping structure for the joints of new and old buildings as claimed in claim 4, characterized in that: The end of the joint on the water-facing side is also provided with polysulfide sealant as an auxiliary seal.

6. The water-stopping structure for the joints of new and old buildings as claimed in claim 3, characterized in that: The groove surface of the L-shaped groove body is waterproof and sealed by epoxy structural adhesive material.

7. The water-stopping structure for the joints of new and old buildings as claimed in claim 3, characterized in that: The L-shaped wing plate belt is provided with a pressure plate on one side facing the joint, and the two sides of the pressure plate are respectively fitted with the L-shaped wing plate and the L-shaped groove body; the expansion bolts pass through the L-shaped wing plate and the pressure plate and are fixed by bolts; the two ends of the expansion bolts are buried in the concrete of the original building through preset positioning holes.

8. The water-stopping structure for the joints of new and old buildings as claimed in claim 7, characterized in that: The surfaces of the pressing plate and the expansion bolts are coated with epoxy resin glue.

9. The water-stopping structure for the joints of new and old buildings as claimed in claim 8, characterized in that: The groove surface of the L-shaped groove body is sealed by epoxy resin mortar, and the epoxy resin mortar covers the pressing plate, the expansion bolts and the L-shaped wing plate.

10. The water-stopping structure for the joints of new and old buildings as claimed in claim 3, characterized in that: The top of the L-shaped trough body is provided with a trapezoidal structure adapted to the wedge-shaped structure of the L-shaped wing plate belt.

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