Water-passing culvert copper sheet water stop structure adapting to upper sedimentation
By designing a U-shaped asphalt trough and copper sheet water-stopping structure to adapt to upper settlement, the problem that existing water-stopping structures cannot adapt to foundation settlement is solved, achieving all-round water-stopping and structural stability, and simplifying the construction process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HOHAI UNIV
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-15
AI Technical Summary
The existing L-shaped copper sheet water-stop structure cannot adapt to the internal stress changes caused by the settlement of the upper part in the culvert, resulting in leakage at the top joint and structural damage, especially when the flow is full, it cannot achieve all-round water stop.
The design incorporates top, left, right, and bottom water-stop structures, employing U-shaped asphalt channels and integral copper sheet pressing. After welding, the structures are assembled on-site with gaps to allow for adaptive deformation. A flexible hinge design is incorporated to release stress, and the gaps are sealed with asphalt.
It achieves all-round water stoppage, reduces structural cracks and the risk of damage, improves adaptability to foundation settlement and temperature changes, and simplifies the construction process.
Smart Images
Figure CN224243785U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a water-stopping structure, and more particularly to a copper sheet water-stopping structure for a culvert that adapts to upper settlement. Background Technology
[0002] During the construction of culverts, the inability to pour concrete continuously, foundation settlement, and temperature changes can all lead to deformation joints and construction joints in the concrete structure. Therefore, it is necessary to introduce joint sealing technology to seal these joints and reduce leakage losses and the risk of structural damage. The common practice is to set up a concrete trough between the first-stage and second-stage concrete, and install copper sheets, rubber waterstops, asphalt, etc. in the trough.
[0003] For example, CN111236153A discloses a vertical water-stopping structure and construction method for hydraulic engineering. The water-stopping structure includes a copper sheet, a channel steel asphalt groove, and fasteners. The copper sheet is L-shaped, with one end fixed in the concrete and the other end inserted into the channel steel asphalt groove. The channel steel asphalt groove is a spliced groove connected to the fasteners by bolts. The fasteners undergo anti-corrosion treatment, which involves pre-coating the surface of the fasteners with electrophoretic spraying or wrapping the surface of the fasteners with an adhesive anti-corrosion material. The construction method includes S1 pouring the first-stage concrete, S2 laying asphalt felt, S3 installing the channel steel groove, S4 pouring asphalt, and S5 pouring the second-stage concrete. This invention improves the adhesion between the channel steel and the concrete, reduces the freezing strength, and increases the durability of the water-stopping structure and the concrete by setting a spliced channel steel groove, incorporating built-in fasteners, and setting an anti-corrosion layer on the surface of the fasteners.
[0004] Most of the water-stopping copper sheets used in hydraulic engineering projects, similar to those in patents CN111236153A and CN114541331A, are L-shaped. They are widely used for bottom and vertical water-stopping, but their fixed structure makes them unable to adapt to the internal stress caused by foundation settlement after construction, leading to new cracks. Furthermore, in structures such as water conveyance tunnels and culverts, L-shaped copper sheet waterstops cannot achieve top water-stopping, especially under full flow conditions. Untreated top joints can cause leakage, leading to cracks, deformation, or even structural damage. Utility Model Content
[0005] Purpose of the utility model: The purpose of this utility model is to propose a copper sheet water-stopping structure for culverts that adapts to upper settlement, thereby achieving all-round water stoppage.
[0006] Technical solution: This utility model includes a top water-stop structure, a left water-stop structure, a right water-stop structure and a bottom water-stop structure. The left water-stop structure and the right water-stop structure are respectively welded to the left and right sides between the top water-stop structure and the bottom water-stop structure. The left water-stop structure and the right water-stop structure are exactly the same, and both have a notch at the bottom.
[0007] The top water-stop structure includes a top water-stop asphalt groove, a top left water-stop plate, a top right water-stop plate, and a top water-stop side groove; the top left water-stop plate and the top right water-stop plate are connected to the top water-stop structure by welds.
[0008] The top water-stop side groove and the top water-stop structure are made of integral copper sheet and are welded on the construction site. The operation is simple and convenient, reducing the use of large equipment and facilitating transportation and construction.
[0009] The bottom water-stopping structure includes a bottom water-stopping asphalt groove, a bottom left water-stopping plate, a bottom right water-stopping plate, and a bottom water-stopping side groove; the bottom left water-stopping plate and the bottom right water-stopping plate are connected to the bottom water-stopping structure by welds.
[0010] The bottom water-stop side groove and the bottom water-stop structure are made of integral copper sheet and are welded after arriving at the construction site. The operation is simple and convenient, reducing the use of large equipment and facilitating transportation and construction.
[0011] Both the top and bottom water-stopping asphalt grooves adopt a U-shaped structure, making them more adaptable to stress changes.
[0012] The top left waterstop, top right waterstop, bottom left waterstop, and bottom right waterstop are welded inside the structure, leaving a gap of 0.5 to 1 cm. During construction, 30# asphalt is used to seal the gap.
[0013] Beneficial effects: This utility model has the following advantages:
[0014] (1) This utility model is provided with a top water-stopping structure, a left water-stopping structure, a right water-stopping structure and a bottom water-stopping structure, which realizes all-round water-stopping and is conducive to sealing the top joint.
[0015] (2) When the top water-stop structure of this utility model is welded to the left and right water-stop structures, welding is only performed on the side without the top left and right water-stop plates. The unwelded area forms a "flexible hinge," allowing the structure to rotate or displace slightly under settlement pressure, thus avoiding stress concentration caused by rigid connections. The bottom of the left and right water-stop structures is provided with notches, which serve as stress relief grooves. During settlement deformation, deformation is preferentially guided to concentrate in the notch area, preventing other critical parts (such as welds or corners) from cracking due to excessive stress. Both designs can adapt to deformation under settlement pressure, reducing the risk of cracks and structural damage caused by stress concentration. The top and bottom water-stop asphalt grooves both adopt a U-shaped structure. Their geometric design disperses stress through curved surfaces. Combined with the fluidity of asphalt and the ductility of copper sheets, they can efficiently absorb deformation caused by temperature or water pressure fluctuations, making them more adaptable to stress changes.
[0016] (3) All parts can be pre-pressed with copper sheets and then welded at the construction site. The operation is simple and convenient, reducing the use of large equipment and facilitating transportation and construction. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is an exploded view of the present invention. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings.
[0020] like Figure 1 and Figure 2 As shown, the copper sheet water-stop structure for culverts adapted to upper settlement of this utility model includes a top water-stop structure 1, a left water-stop structure 2, a right water-stop structure 3, and a bottom water-stop structure 4. The left water-stop structure 2 and the right water-stop structure 3 are respectively welded to the left and right sides between the top water-stop structure 1 and the bottom water-stop structure 4.
[0021] The top water-stop structure 1 and the bottom water-stop structure 4 are similar in structure. The top water-stop structure 1 is 200cm long and 20cm wide. The bottom water-stop structure 4 is 220cm long and 20cm wide. The left water-stop structure 2 and the right water-stop structure 3 are exactly the same. Both have a notch at the bottom to allow them to adapt to the settlement pressure from above and thus deform accordingly. The left water-stop structure 2 and the right water-stop structure 3 are 200cm high and 20cm wide. The notch is 8cm high and 6cm wide.
[0022] The top water-stop structure 1 includes a top water-stop asphalt groove 11, a top left-side water-stop plate 12, a top right-side water-stop plate 13, and a top water-stop side groove 14. The top water-stop side groove 14 and the top water-stop structure 1 are integrally pressed from copper sheets. The top left-side water-stop plate 12 and the top right-side water-stop plate 13 are connected to the top water-stop structure 1 by welds. The bottom water-stop structure 4 includes a bottom water-stop asphalt groove 41, a bottom left-side water-stop plate 42, a bottom right-side water-stop plate 43, and a bottom water-stop side groove 44. The bottom water-stop side groove 44 and the bottom water-stop structure 4 are integrally pressed from copper sheets. The bottom left-side water-stop plate 42 and the bottom right-side water-stop plate 43 are connected to the bottom water-stop structure 4 by welds. Both the top water-stop asphalt groove 11 and the bottom water-stop asphalt groove 41 adopt a U-shaped structure with a groove depth of 9.5 cm and an arc diameter of 1.5 cm, making them more adaptable to stress changes.
[0023] The top left waterstop 12, top right waterstop 13, bottom left waterstop 42, and bottom right waterstop 43 are rectangular structures with a height of 10cm and a width of 12cm. The top waterstop side groove 14 and the bottom waterstop side groove 44 are both 2cm deep to facilitate asphalt injection, reduce asphalt loss, and facilitate sealing with the steel groove.
[0024] When welding the left water-stop structure 2 and the right water-stop structure 3 to the top water-stop structure 1 and the bottom water-stop structure 4, it is necessary to ensure that the top left water-stop plate 12, the top right water-stop plate 13, the bottom left water-stop plate 42, and the bottom right water-stop plate 43 are inside the structure and leave a gap of 0.5 to 1 cm. During construction, 30# asphalt is used to seal the gap.
[0025] When the top water-stop structure 1 is welded to the left water-stop structure 2 and the right water-stop structure 3, welding is only performed on the side where the top left water-stop plate 12 and the top right water-stop plate 13 are not installed, and welding is not performed on the other side. That is, the length of the weld H1 and H2 is 3 / 5 to 3 / 4 of the top water-stop structure 1, so that it can adapt to deformation when subjected to settlement pressure.
Claims
1. A copper sheet waterstop structure for a culvert that adapts to upper settlement, characterized in that, It includes a top water-stop structure, a left water-stop structure, a right water-stop structure and a bottom water-stop structure. The left and right water-stop structures are welded to the left and right sides between the top and bottom water-stop structures, respectively. The left and right water-stop structures are exactly the same, and both have a notch at the bottom.
2. The copper sheet waterstop structure for culverts adapted to upper settlement as described in claim 1, characterized in that, The top water-stop structure includes a top water-stop asphalt groove, a top left water-stop plate, a top right water-stop plate, and a top water-stop side groove; the top left water-stop plate and the top right water-stop plate are connected to the top water-stop structure by welds.
3. The copper sheet waterstop structure for culverts adapted to upper settlement as described in claim 2, characterized in that, The top water-stop groove and the top water-stop structure are made of a single piece of pressed copper sheet.
4. The copper sheet waterstop structure for culverts adapted to upper settlement as described in claim 2, characterized in that, The bottom water-stopping structure includes a bottom water-stopping asphalt groove, a bottom left water-stopping plate, a bottom right water-stopping plate, and a bottom water-stopping side groove; the bottom left water-stopping plate and the bottom right water-stopping plate are connected to the bottom water-stopping structure by welds.
5. The copper sheet waterstop structure for culverts adapting to upper settlement as described in claim 4, characterized in that, The bottom water-stop groove and the bottom water-stop structure are made of a single piece of pressed copper sheet.
6. The copper sheet waterstop structure for culverts adapted to upper settlement as described in claim 4, characterized in that, Both the top and bottom water-stopping asphalt grooves adopt a U-shaped structure.
7. The copper sheet waterstop structure for culverts adapting to upper settlement as described in claim 4, characterized in that, The top left waterstop, top right waterstop, bottom left waterstop, and bottom right waterstop are welded inside the structure, with a gap of 0.5 to 1 cm.