Waterstop for a ground wall

Abstract

The invention relates to a waterstop for earth wall, which has a central cylindrical rubber body, the upper end of which is provided with a rubber plate, and the lower end of which is provided with a steel edge; two symmetrical wing-shaped rubber bodies are arranged on the two sides, and a pull-resistant rubber strip is arranged on the upper surface of the rubber plate. The waterstop for earth wall can increase the length of the underground water infiltration route in the middle surface of the earth wall joint, and can avoid the cement slurry entering the steel edge side of the waterstop when the joint box is used for pouring the earth wall concrete body.

Description

Technical Field

[0001] This invention relates to a novel rubber waterstop at the joint of adjacent diaphragm walls during the construction of underground continuous walls. Background Technology

[0002] In the construction of diaphragm walls, there is a noticeable water seepage phenomenon at the joints between each wall section. Currently, a type of rubber-steel edge waterstop has good waterproof performance.

[0003] Rubber-steel edged waterstops are composite components consisting of deformable rubber and a galvanized steel edge on one side. These waterstops primarily rely on the compression or stretching of the central rubber section within the concrete expansion joint to achieve a sealing and waterproofing effect.

[0004] Currently, during construction, this type of waterstop is placed in the groove of a special joint box, relying on the friction generated by compressing the middle rubber segment to fix it to the joint box. However, slurry in the groove easily seeps into the groove and coats the rubber segment, reducing the bonding effect between the poured concrete and the rubber-steel edge, thus decreasing the sealing and waterproofing effect at the wall-to-ground joint. Furthermore, during concrete pouring, slurry easily seeps into the groove, and after solidification, it binds the rubber-steel edge waterstop to the joint box, making it easy to break when detached.

[0005] How to prevent mud, especially concrete, from entering the groove when placing the waterstop is a technical problem that needs to be solved. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the purpose of this invention is to provide a waterstop for floor walls that can prevent mud, especially concrete, from entering the groove and wrapping the steel edge during concrete pouring, while also preventing the rubber sheet from bending during concrete pouring on the rubber sheet side and increasing the length of the seepage path.

[0007] To achieve the above objectives, the technical solution of the present invention is: a waterstop for a floor wall, having a central cylindrical rubber body, a rubber plate at the upper end of the central cylindrical rubber body, and a steel edge at the lower end; a pair of symmetrical wing-shaped rubber bodies are provided on both sides, and anti-pull-out rubber strips are provided on the rubber plates.

[0008] Furthermore, the cross-section of the central column rubber body is a hollow circle.

[0009] Furthermore, the rubber sheet has a long rectangular cross-section, and several solid protruding anti-pull-out rubber strips are symmetrically arranged on both sides of the central plane of the long side of the long rectangular cross-section. These strips have rectangular cross-sections and are used to increase the interlocking with the concrete to prevent pull-out.

[0010] Furthermore, anti-bending rubber strips are evenly spaced along the length of the rubber plate. The cross-section of the anti-bending rubber strips is semi-circular, and the anti-bending rubber strips extend from the side of the central column rubber body to the outermost side.

[0011] Furthermore, the cross-section of the steel edge is a long rectangle, with one side facing the central column rubber body. The connection point is a long teardrop-shaped rubber body. The steel edge is inserted into the long teardrop rubber body, with the head of the long teardrop rubber body facing the central column rubber body and the tail wrapping around the steel edge.

[0012] Furthermore, the airfoil rubber body is a hollow airfoil with a cross-section consisting of vertically parallel rectangular airfoils. The outer side is formed by vertically connected rectangular plates, while the inner side is connected to the central pillar rubber body. The long side is located on the normal plane of the central pillar rubber body.

[0013] Furthermore, in the cross-section of the airfoil rubber body, the upper and lower airfoil surfaces are connected by an oblique rectangular plate, the upper end of which intersects with the central column rubber body and the upper airfoil plate, and the lower end is connected to the lower airfoil plate, close to the outer vertical rectangular plate; the bottom surface of the lower airfoil surface is lower than the center surface of the central column rubber body.

[0014] Furthermore, the steel edge is provided with long slots at equal intervals along its length, and a folded edge is formed at the edge of the long slots by a punching process, which can improve the stiffness of the steel edge along its width.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) Increased the length of the groundwater seepage path in the middle surface of the wall joint.

[0017] (2) When using the joint box to pour concrete for the ground wall, cement slurry can be prevented from entering the steel edge of the waterstop. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cross-section of the waterstop strip for the floor wall according to the present invention;

[0019] Figure 2 This is a schematic diagram of the waterstop strip for floor walls according to the present invention;

[0020] Figure 3 This is a schematic diagram of the waterstop strip for floor walls of the present invention placed inside the joint box;

[0021] Figure 4 This is a schematic diagram of the underground continuous wall after concrete pouring. Detailed Implementation

[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] like Figure 1 , 2 As shown, the waterstop strip for the floor wall of the present invention includes a steel edge 1, a long teardrop rubber body 2, a central cylindrical rubber body 3, a wing-shaped rubber body 4, a rubber plate 5, an anti-pull-out rubber strip 6, an anti-bending rubber strip 7, and a long slot 8.

[0024] The central cylindrical rubber body 3 has a rubber plate 5 at the upper end and a steel edge 1 at the lower end; there are two symmetrical wing-shaped rubber bodies 4 on both sides, and anti-pull-out rubber strips 6 are provided on the rubber plate 5.

[0025] Preferably, the cross-section of the central column rubber body 3 is a hollow circle, and the material is rubber.

[0026] Preferably, the cross-section of the rubber sheet 5 is a long rectangle, and several solid protruding anti-pull-out rubber strips 6 are symmetrically arranged on both sides of the central plane of the long side of the cross-section. The cross-section is rectangular, and the material is homogeneous rubber, which increases the interlocking with the concrete and plays an anti-pull-out role.

[0027] Preferably, anti-bending rubber strips 7 are evenly spaced along the length of the rubber sheet 5, with a semi-circular cross-section, extending from the side of the central column rubber body 3 to the outermost side, and are made of homogeneous rubber.

[0028] Preferably, the cross-section of the steel edge 1 is a long rectangle, with one side facing the central column rubber body 3. The connection is a long teardrop-shaped rubber body 2. The steel edge 1 is inserted into the long teardrop rubber body 2. The head (large diameter part) of the long teardrop rubber body 2 faces the central column rubber body 3, and the tail wraps around the steel edge 1.

[0029] Preferably, the airfoil rubber body 4 is a hollow airfoil with a cross-section consisting of two vertically parallel rectangular airfoils. The outer side is formed by vertically connected rectangular airfoils, while the inner side is connected to the central pillar rubber body 3, with its long side located on the normal plane of the central pillar rubber body 3. An oblique rectangular plate connects the upper and lower airfoils, with its upper end intersecting the central pillar rubber body 3 and the upper airfoil, and its lower end connecting to the lower airfoil, close to the outer vertical rectangular plate. The bottom surface of the lower airfoil is lower than the center surface of the central pillar rubber body 3. The material is homogeneous rubber.

[0030] Preferably, long slots 8 are evenly spaced along the length direction on the steel edge 1, and a folded edge is formed on the side of the long slots 8 by a punching process to improve the rigidity of the steel edge along the width direction.

[0031] like Figure 3 As shown, the steel edge 1 of the rubber-steel edge waterstop of the present invention is placed into the groove of the special joint box, and the bottom surfaces of the wing-shaped rubber bodies 4 on both sides are attached to the surface of the groove of the special joint box to fix the waterstop. Figure 2 Place the joint box into the concrete trench section of the ground wall to be poured, then lower the reinforcing cage. After all components are accurately positioned, the concrete can be poured. After the concrete has set and the adjacent trench section has been excavated, the joint box can be removed.

[0032] When the concrete flows to the central cylindrical rubber body 3, it compresses the surface of the airfoil rubber body 4, causing the upper surface and side facades to bend and deform inward. When the concrete for the next section of the floor wall is poured, the lower surface of the airfoil bends inward. This increases the length of the seepage path and the elastic deformation area of ​​the rubber body, thereby improving its water resistance.

[0033] When pouring the concrete for the next section of the ground wall, the concrete can pass through the long slot 8 to both sides of the steel edge, preventing the steel edge from bending on one side due to inconsistent pressure on both sides, thus preventing a reduction in the width of the anti-seepage zone.

[0034] like Figure 4 As shown, this invention is applied to the joint C between two adjacent floor walls (floor wall A poured first and floor wall B poured later) during the construction of the floor wall, to enhance the water-stopping and seepage-resistant effect.

Claims

1. A waterstop strip for floor walls, characterized in that: It has a central cylindrical rubber body with a rubber plate at the upper end and a steel edge at the lower end; two symmetrical airfoil rubber bodies are provided on both sides, and anti-pull-out rubber strips are provided on the rubber plates; the cross-section of the rubber plate is long and rectangular, and several solid protruding anti-pull-out rubber strips are symmetrically arranged on both sides of the central axis of the long side of the long rectangular cross-section, with rectangular cross-sections to increase the interlocking with the concrete and play an anti-pull-out role; anti-bending rubber strips are evenly spaced along the length of the rubber plate, and the cross-section of the anti-bending rubber strips is semi-circular, extending from the side of the central cylindrical rubber body to the outermost side; the airfoil rubber body is a hollow airfoil with a cross-section of two vertically parallel rectangular airfoils, the outer side of which is connected by vertical rectangular plates, and the inner side is connected to the central cylindrical rubber body, with the long side located on the normal plane of the central cylindrical rubber body.

2. The waterstop strip for floor walls according to claim 1, characterized in that: The cross-section of the central cylindrical rubber body is a hollow circle.

3. The waterstop strip for floor walls according to claim 1, characterized in that: The steel edge has a long rectangular cross-section, with one side facing the central cylindrical rubber body. The connection point is a long teardrop-shaped rubber body. The steel edge is inserted into the long teardrop rubber body, with the head of the long teardrop rubber body facing the central cylindrical rubber body and the tail wrapping around the steel edge.

4. The waterstop strip for floor walls according to claim 1, characterized in that: In the cross-section of the airfoil rubber body, the upper and lower airfoils are connected by an oblique rectangular plate. The upper end of the airfoil intersects with the central cylindrical rubber body and the upper airfoil, and the lower end is connected to the lower airfoil, close to the outer vertical rectangular plate. The bottom surface of the lower airfoil is lower than the center surface of the central cylindrical rubber body.

5. The waterstop strip for floor walls according to claim 1, characterized in that: The steel edge is provided with long slots at equal intervals along its length. By punching, a folded edge is formed at the edge of the long slots, which can improve the stiffness of the steel edge along its width.

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