Water stop device for aqueduct body expansion joint

Abstract

The utility model provides an aqueduct body expansion joint water stop device which comprises aqueduct bodies, and an expansion joint is formed between every two adjacent aqueduct bodies. The U-shaped water stop belts are connected with the two adjacent groove bodies respectively, and U-shaped grooves of the U-shaped water stop belts are plugged at the expansion joints; and the stainless steel pressing plate is located between the U-shaped water stop belt and the groove body, a closed cavity is formed between the stainless steel pressing plate and the U-shaped water stop belt, and the closed cavity is filled with caulking materials to form a caulking material glue layer. According to the utility model, a caulking type water stop mode and a pressing plate type water stop mode are combined, and the U-shaped water stop belt, the stainless steel pressing plate and the caulking material are adopted, so that the total cross-section water stop function of the water stop rubber belt is realized, water permeation is effectively prevented, and the sealing performance of the aqueduct is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of aqueduct water stop devices, and particularly relates to a water stop device for the expansion joint of an aqueduct body. Background Technique

[0002] As an efficient water conveyance structure, the aqueduct is widely favored due to its high water conveyance efficiency, strong spanning ability and construction convenience, and plays a crucial role in water conservancy projects. However, despite the significant advantages in design and function, the aqueduct has a leakage problem, which not only affects the water conveyance efficiency but also poses a potential threat to the project safety.

[0003] Among the many factors causing aqueduct leakage, the failure of the expansion joint water stop is particularly critical. As the core component in the aqueduct project, the performance of the expansion joint water stop directly relates to the stability and reliability of the entire project. Currently, there are mainly two forms of expansion joint water stops: the caulking type and the lapping type. Among them, the lapping type water stop is further subdivided into the bonding type and the pressing plate type.

[0004] The caulking type water stop realizes the sealing effect by embedding the sealing material into the expansion joint; the bonding type water stop uses an adhesive to fix the water stop rubber strip at the joint on the water-facing side of the aqueduct to enhance the water stop performance; the pressing plate type water stop tightly fixes the water stop rubber strip at the joint by the pressure applied by bolts and flat steel to improve the water stop effect.

[0005] Although these several water stop forms have their own characteristics and advantages, most of the existing technologies focus on the water stop rubber strip on the water-facing side of the aqueduct, while ignoring the water stop function of the inter-seam water stop belt. This one-sided water stop design restricts the improvement of the overall water stop performance of the aqueduct, and there is an urgent need for a more comprehensive and efficient water stop device. Content of the Utility Model

[0006] (I) Technical Problems to be Solved

[0007] In view of the deficiencies of the existing technology, the utility model provides a water stop device for the expansion joint of an aqueduct body, which solves the problems raised in the above background technique.

[0008] (II) Technical Solutions

[0009] To achieve the above purposes, the utility model is realized through the following technical solutions: A water stop device for the expansion joint of an aqueduct body includes an aqueduct body, and an expansion joint is formed between two adjacent aqueduct bodies;

[0010] A U-shaped water stop belt, the U-shaped water stop belt is respectively connected to two adjacent aqueduct bodies, and the U-shaped groove of the U-shaped water stop belt blocks the expansion joint;

[0011] Stainless steel pressing plate, the stainless steel pressing plate is located between the U-shaped water stop belt and the trough body, and a sealed chamber is formed between the stainless steel pressing plate and the U-shaped water stop belt, and a caulking material is filled in the sealed chamber to form a caulking material adhesive layer.

[0012] Preferably, an adjustable strut is provided in the middle of the U-shaped trough, and the adjustable strut keeps the U-shaped water stop belt, the stainless steel pressing plate and the caulking material provided between the U-shaped water stop belt and the stainless steel pressing plate in a compressed state.

[0013] Preferably, the thickness of the caulking material adhesive layer ≥ 3mm.

[0014] Preferably, the expansion joint water stop device of the aqueduct trough body further includes a sealing mechanism, the sealing mechanism includes a polyethylene caulking board, a polysulfide sealant layer and a acrylic emulsion mortar backfill layer, the polyethylene caulking board abuts against the surface of the U-shaped trough, and the width of the polyethylene caulking board is greater than the width of the U-shaped trough, the upper surface of the polyethylene caulking board abuts against the polysulfide sealant layer, the acrylic emulsion mortar backfill layer is fixed between the side wall of the trough body and the polyethylene caulking board, and the height of the acrylic emulsion mortar backfill layer is the same as the sum of the heights of the polyethylene caulking board and the polysulfide sealant layer.

[0015] Preferably, the acrylic emulsion mortar backfill layer abuts against the U-shaped water stop belt, so that the U-shaped water stop belt, the stainless steel pressing plate and the caulking material provided between the U-shaped water stop belt and the stainless steel pressing plate are in a compressed state.

[0016] Preferably, the expansion joint water stop device of the aqueduct trough body further includes a fixing bolt, the fixing bolt sequentially passes through the U-shaped water stop belt and the stainless steel pressing plate and is connected and fixed to the bottom of the trough body, and the fixing bolt keeps the U-shaped water stop belt, the stainless steel pressing plate and the caulking material provided between the U-shaped water stop belt and the stainless steel pressing plate in a compressed state.

[0017] Preferably, there is also planting bar glue between the fixing bolt and the trough body.

[0018] (III) Beneficial effects

[0019] The utility model provides an expansion joint water stop device for an aqueduct trough body. It has the following beneficial effects:

[0020] 1. The expansion joint water stop device for the aqueduct trough body provided by this solution combines the caulking type and the pressing plate type water stop forms, adopts a U-shaped water stop belt, a stainless steel pressing plate and a caulking material, realizes the full-section water stop effect of the water stop rubber belt, effectively prevents water penetration, and enhances the sealing performance of the aqueduct.

[0021] 2. The expansion joint water stop device for the aqueduct body provided by this solution further seals the entire cross-section of the aqueduct body through adjustable struts, a sealing mechanism, and fixing bolts, improving the durability of the water stop device, extending the service life of the aqueduct, reducing the frequency of maintenance and replacement, and lowering the cost.

[0022] 3. The expansion joint water stop device for the aqueduct body provided by this solution takes into account the convenience of construction, simplifies the installation process, reduces the construction difficulty, and improves the construction efficiency. Brief Description of the Drawings

[0023] Figure 1 It is a cross-sectional schematic diagram of the expansion joint water stop device for the aqueduct body of the present utility model.

[0024] In the figure: 1. Aqueduct body; 2. U-shaped water stop belt; 3. Stainless steel pressing plate; 4. Adjustable strut; 5. Sealing mechanism; 6. Fixing bolt; 11. Expansion joint; 21. U-shaped groove; 31. Sealed chamber; 51. Polyethylene caulking board; 52. Polysulfide sealant layer; 53. Emulsion mortar backfill layer. Detailed Embodiment

[0025] The embodiment of the present utility model provides an expansion joint water stop device for the aqueduct body, as Figure 1As shown in the figure, it includes a trough body 1, a U-shaped waterstop 2, a stainless steel pressing plate 3, an adjustable strut 4, a sealing mechanism 5 and fixing bolts. An expansion joint 11 is formed between two adjacent trough bodies 1. The U-shaped waterstop 2 is respectively connected to the two adjacent trough bodies 1. The U-shaped groove 21 of the U-shaped waterstop 2 is blocked at the expansion joint 11. The stainless steel pressing plate 3 is located between the U-shaped waterstop 2 and the trough body 1. Since the edge of the stainless steel pressing plate 3 forms a groove outward, a sealed chamber 31 can be formed between it and the U-shaped waterstop 2. A caulking material is filled in the sealed chamber 31 to form a caulking material glue layer. An adjustable strut 4 is arranged in the middle of the U-shaped groove 21 in the middle of the U-shaped waterstop 2. The adjustable strut 4 makes the U-shaped waterstop 2, the stainless steel pressing plate 3 and the caulking material arranged between the U-shaped waterstop 2 and the stainless steel pressing plate 3 in a compressed state. The adjustable strut 4 is mainly used to compact the U-shaped waterstop 2, the stainless steel pressing plate 3 and the caulking material in the expansion joint 11 to improve the sealing degree. The sealing mechanism 5 includes a polyethylene caulking board 51, a polysulfide sealant layer 52 and a acrylic emulsion mortar backfill layer 53. The polyethylene caulking board 51 abuts against the surface of the U-shaped groove 21, and the width of the polyethylene caulking board 51 is greater than the width of the U-shaped groove 21, which is used to seal the chamber of the U-shaped groove 21. The upper surface of the polyethylene caulking board 51 abuts against the polysulfide sealant layer 52. The acrylic emulsion mortar backfill layer 53 is fixed between the side wall of the trough body 1 and the polyethylene caulking board 51. The height of the acrylic emulsion mortar backfill layer 53 is the same as the sum of the heights of the polyethylene caulking board 51 and the polysulfide sealant layer 52, that is, flush with the water-facing surface of the trough body 1. The acrylic emulsion mortar backfill layer 53 abuts against the U-shaped waterstop 2, making the U-shaped waterstop 2, the stainless steel pressing plate 3 and the caulking material arranged between the U-shaped waterstop 2 and the stainless steel pressing plate 3 in a compressed state. It should be noted that in order to improve the sealing performance of the expansion joint waterstop device of this embodiment, the thickness of the caulking material glue layer in the sealed chamber 31 ≥ 3mm. In addition, setting the polysulfide sealant layer 53 above the polyethylene caulking board 51 is also convenient for marking the corresponding position of the U-shaped groove 21 of the U-shaped waterstop 2, which is convenient for subsequent inspection and maintenance of the adjustable strut 4 in the U-shaped groove 21. The fixing bolts 6 sequentially pass through the U-shaped waterstop 2 and the stainless steel pressing plate 3 and are connected and fixed to the bottom of the trough body 1. The fixing bolts 6 make the U-shaped waterstop 2, the stainless steel pressing plate 3 and the caulking material arranged between the U-shaped waterstop 2 and the stainless steel pressing plate 3 in a compressed state. Both the fixing bolts 6 and the acrylic emulsion mortar backfill layer 53 compact the U-shaped waterstop 2, the stainless steel pressing plate 3 and the caulking material on the surface of the trough body 1 to improve the sealing degree. There is also a planting glue between the fixing bolts 6 and the trough body 1. By setting the planting glue, the stability of the fixing bolts 6 can be improved.

[0026] The installation scheme of the expansion joint waterstop device for the aqueduct trough body provided in this embodiment is as follows:

[0027] S1. Clean and correct the concrete surface at the bottom and side walls of the trough body 1 to ensure that the trough positions on both sides of the expansion joint are at the same horizontal height;

[0028] S2. Drill rebar planting holes equidistantly at the bottom of the trough body 1, then inject rebar planting glue into the rebar planting holes, and then slowly screw the fixing bolts 6 into the rebar planting holes;

[0029] S3. Align with the position of the fixing bolts 6, fix the stainless steel pressing plate 3 on the trough body 1, and one end of the stainless steel pressing plate 3 extends into the expansion joint 11;

[0030] S4. Align with the position of the fixing bolts 6, first lap the U-shaped water stop 2 on the stainless steel pressing plate 3, the U-shaped groove 21 of the U-shaped water stop 2 is located in the expansion joint 11, and a sealed chamber 31 is formed between the U-shaped water stop 2 and the stainless steel pressing plate 3, and fill the sealed chamber 31 with caulking material;

[0031] S5. Tighten and fix the U-shaped water stop 2, the stainless steel pressing plate 3 and the caulking material through the nuts on the fixing bolts 6;

[0032] S6. Set adjustable struts 4 in the U-shaped groove 21 to tightly fix the U-shaped water stop 2, the stainless steel pressing plate 3 and the caulking material located in the expansion joint 11;

[0033] S7. Fix the polyethylene caulking board 51 above the U-shaped groove 21, then fill polysulfide sealant above the polyethylene caulking board 51 to form a polysulfide sealant layer 52, and fill acrylic emulsion mortar between both sides of the polyethylene caulking board 51 and the trough body 1 to form an acrylic emulsion mortar backfill layer 53, and adjust the acrylic emulsion mortar backfill layer 53 to be flush with the polysulfide sealant layer 52, thus completing the installation of the expansion joint water stop device for the aqueduct trough body.

[0034] The expansion joint water stop device for the aqueduct trough body provided by the present utility model can achieve the full-section water stop function, is easy to install, has high stability, and improves the service life of the water stop.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A water-stopping device for expansion joints of an aqueduct body, characterized in that: include: trough body (1), wherein an expansion joint (11) is formed between two adjacent trough bodies (1); A U-shaped waterstop (2), wherein the U-shaped waterstop (2) is respectively connected to two adjacent trough bodies (1), and the U-shaped groove (21) of the U-shaped waterstop (2) is sealed at the expansion joint (11); A stainless steel pressure plate (3), the stainless steel pressure plate (3) is located between the U-shaped waterstop (2) and the trough body (1), and a closed chamber (31) is formed between the stainless steel pressure plate (3) and the U-shaped waterstop (2), and the closed chamber (31) is filled with caulking material to form a caulking material adhesive layer.

2. The aqueduct body expansion joint water-stopping device according to claim 1, characterized in that: An adjustable support rod (4) is provided in the middle of the U-shaped groove (21), and the adjustable support rod (4) keeps the U-shaped water stop (2), the stainless steel pressure plate (3), and the caulking material provided between the U-shaped water stop (2) and the stainless steel pressure plate (3) in a compressed state.

3. The aqueduct body expansion joint water-stopping device according to claim 1, characterized in that: The thickness of the adhesive layer of the caulking material is ≥3mm.

4. The aqueduct body expansion joint water-stopping device according to claim 1, characterized in that: The invention also comprises a sealing mechanism (5), wherein the sealing mechanism (5) comprises a polyethylene caulking plate (51), a polysulfide sealing paste layer (52) and an acrylic emulsion mortar backfill layer (53); the polyethylene caulking plate (51) abuts against the surface of the U-shaped groove (21); the width of the polyethylene caulking plate (51) is greater than the width of the U-shaped groove (21); the upper surface of the polyethylene caulking plate (51) abuts against the polysulfide sealing paste layer (52); the acrylic emulsion mortar backfill layer (53) is fixed between the side wall of the groove body (1) and the polyethylene caulking plate (51); the height of the acrylic emulsion mortar backfill layer (53) is the same as the sum of the heights of the polyethylene caulking plate (51) and the polysulfide sealing paste layer (52).

5. The aqueduct body expansion joint water-stopping device according to claim 4, characterized in that: The acrylic emulsion mortar backfill layer (53) abuts against the U-shaped waterstop (2), so that the U-shaped waterstop (2), the stainless steel pressure plate (3) and the caulking material provided between the U-shaped waterstop (2) and the stainless steel pressure plate (3) are in a compressed state.

6. The aqueduct expansion joint water-stopping device according to claim 1, characterized in that: It also includes a fixing bolt (6), which passes through the U-shaped waterstop (2) and the stainless steel pressure plate (3) in sequence and is connected and fixed to the bottom of the trough body (1). The fixing bolt (6) keeps the U-shaped waterstop (2), the stainless steel pressure plate (3) and the caulking material between the U-shaped waterstop (2) and the stainless steel pressure plate (3) in a compressed state.

7. The aqueduct body expansion joint water-stopping device according to claim 6, characterized in that: Rebar embedding glue is also provided between the fixing bolt (6) and the trough body (1).

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