Nested rubber waterstops, joint surface waterstop structures and their construction methods

Abstract

This invention relates to a nested rubber waterstop, a joint-face waterstop structure, and its construction method. It is applicable to the field of water conservancy and hydropower engineering. The technical solution adopted in this invention is: a nested rubber waterstop, characterized in that it has a fixed wing and a movable wing. The fixed wing has a cavity inside that can accommodate the movable wing. One side of the fixed wing in the width direction has an opening for the movable wing to extend from the cavity. The other side of the fixed wing in the width direction is connected to a grouting pipe communicating with the internal cavity of the fixed wing. A limiting structure I is provided on the side of the movable wing near the grouting pipe. The opening of the fixed wing has a limiting structure II that cooperates with the limiting structure I on the movable wing to prevent the movable wing from completely detaching from the fixed wing.

Description

Technical Field

[0001] This invention relates to a nested rubber waterstop, a joint surface waterstop structure, and its construction method. It is applicable to the field of water conservancy and hydropower engineering. Background Technology

[0002] In water conservancy and hydropower projects, rubber waterstops are commonly used water-stopping materials in concrete structural joints, construction joints, and other joint surfaces. They are strip-shaped and generally laid across the joint surface to block water and prevent leakage. However, because the rubber waterstops cross the joint surface, they conflict with the position of the concrete joint formwork. Therefore, the formwork can only be divided into two parts along the rubber waterstop, which has a certain impact on the fabrication and installation of the formwork and the pouring of concrete. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a nested rubber waterstop, a joint surface waterstop structure and its construction method, in view of the above-mentioned problems.

[0004] The technical solution adopted in this invention is: a nested rubber waterstop, characterized in that: it has a fixed wing and a movable wing, the fixed wing has a cavity inside which the movable wing can be placed, the fixed wing has an opening on one side in the width direction for the movable wing to extend out of the cavity, and the other side in the width direction of the fixed wing is connected to a grouting pipe that communicates with the internal cavity of the fixed wing.

[0005] The movable wing has a limiting structure I on the side near the grouting pipe, and the fixed wing has a limiting structure II at its opening that can cooperate with the limiting structure I on the movable wing to prevent the movable wing from completely detaching from the fixed wing.

[0006] The movable wing has a movable wing body and a limiting structure I formed on one side of the movable wing body, wherein the thickness of the movable wing body is less than the height of the internal cavity of the fixed wing, and the limiting structure I is a limiting protrusion arranged along the length of the movable wing, the thickness of which is adapted to the height of the internal cavity of the fixed wing; the opening size of the internal cavity of the fixed wing is adapted to the movable wing body.

[0007] The fixed wing's internal cavity has rigid limiting blocks at both the top and bottom of its opening, and the distance between the upper and lower limiting blocks is adapted to the thickness of the movable wing body.

[0008] The top and bottom surfaces of the opening of the internal cavity of the fixed wing are transitioned to the corresponding top and bottom surfaces of the internal cavity of the fixed wing via ramp surface I; the top and bottom surfaces of the main body of the movable wing are transitioned to the corresponding top and bottom surfaces of the limiting protrusion via ramp surface II, and the ramp surface II on the movable wing is adapted to the ramp surface I on the fixed wing.

[0009] Several slots parallel to the length of the fixed wing are formed on the top and bottom surfaces of the opening of the internal cavity of the fixed wing; several ribs that match the slots are formed on the top and bottom surfaces of the movable wing body near the limiting protrusion.

[0010] Both the fixed wing and the movable wing are made of rubber.

[0011] A joint surface water-stopping structure, characterized in that: it has a pre-cast concrete block and a post-cast concrete block, and the nested rubber water-stopping strip is provided across the joint surface between the pre-cast concrete block and the post-cast concrete block;

[0012] The fixed wing of the nested rubber waterstop is embedded in the pre-cast concrete block, and the movable wing inside the fixed wing extends to the post-cast concrete block and is embedded in the post-cast concrete block. The internal cavity of the fixed wing is filled with cement grout.

[0013] A construction method for the aforementioned joint surface waterproofing structure, characterized in that:

[0014] Set up a template for the pre-cast concrete block, and set up the nested rubber waterstop within the area of ​​the pre-cast concrete block. The movable wing of the nested rubber waterstop is embedded in the fixed wing, and the opening of the fixed wing is set close to the template.

[0015] After the concrete pre-cast block is poured and the formwork is removed, pull out the movable wing from the fixed wing until the limiting structure I on the movable wing and the limiting structure II on the fixed wing cooperate to achieve locking.

[0016] Once the movable wing is pulled out into position, cement grout is injected through the grouting pipe, filling the cavity inside the fixed wing.

[0017] Once the movable wing is pulled out into position, pour the concrete block corresponding to the position of the movable wing, and the movable wing is embedded in the concrete block.

[0018] The beneficial effects of this invention are as follows: The nested rubber waterstop of this invention includes a fixed wing and a movable wing. The movable wing can be embedded within the fixed wing and can be pulled out from the fixed wing when needed. When pouring the pre-cast concrete block, the movable wing is embedded within the fixed wing and embedded in the pre-cast concrete block. At this time, it does not affect the installation of the formwork. After the pre-cast concrete block is poured and the formwork is removed, the movable wing is pulled out from the fixed wing, and then the post-cast concrete block combined with the movable wing is poured to form a waterstop spanning the joint surface. The structure is simple, the operation is convenient, and it improves construction efficiency, especially the efficiency of formwork installation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the cross-section when the concrete pre-cast block is completed in the embodiment.

[0020] Figure 2This is a schematic diagram of the cross-section after all the concrete has been poured in the example.

[0021] 1. Nested rubber waterstop; 2. Fixed wing; 3. Movable wing; 4. Limiting block; 5. Slot; 6. Slope surface I; 7. Rib; 8. Slope surface II; 9. Grease; 10. Template; 11. Grouting pipe; 12. Precast concrete block; 13. Movable wing; 14. Joint surface; 15. Cement grout. Detailed Implementation

[0022] This embodiment is a nested rubber waterstop with fixed wings and movable wings, both made of rubber. The fixed wing has a cavity inside that can be embedded with the movable wing. The fixed wing has an opening on one side in the width direction for the movable wing to extend out of the cavity, and a grouting pipe connecting the fixed wing to the cavity inside the fixed wing is connected to the other side in the width direction.

[0023] In this example, the movable wing has a strip-shaped main body. The thickness of the movable wing main body is less than the gap between the top and bottom surfaces of the internal cavity of the fixed wing. A limiting structure I is formed on one side of the movable wing main body. This limiting structure I is a limiting protrusion arranged along the length of the movable wing, and the thickness of the limiting protrusion is adapted to the gap between the top and bottom surfaces of the internal cavity of the fixed wing. The top surface of the movable wing main body and the top surface of the limiting protrusion are transitioned by a ramp surface II, and the bottom surface of the movable wing main body and the bottom surface of the limiting protrusion are also transitioned by a ramp surface II. Multiple ribs arranged parallel to the length of the movable wing are provided on the top and bottom surfaces of the movable wing main body near the limiting protrusion.

[0024] In this embodiment, the fixed wing opening is provided with a limiting structure II that can cooperate with the limiting structure I on the movable wing to prevent the movable wing from completely detaching from the fixed wing. The limiting structure II includes an opening whose top and bottom surface gap is adapted to the thickness of the movable wing body and is smaller than the thickness of the limiting protrusion. The top surface of the fixed wing opening and the top surface of the fixed wing internal cavity are transitioned by a ramp surface I, and the bottom surface of the fixed wing opening and the bottom surface of the fixed wing internal cavity are transitioned by a ramp surface I.

[0025] In this example, multiple slots are made on the top and bottom surfaces of the opening of the internal cavity of the fixed wing, which can be adapted to the ribs on the movable wing.

[0026] In this embodiment, rigid limiting blocks are provided on the top and bottom surfaces of the opening of the internal cavity of the fixed wing. The gap between the upper and lower rigid limiting blocks is adapted to the thickness of the main body of the movable wing. The limiting blocks are made of rigid materials such as copper blocks or hard plastic, which serve to fix the opening and prevent the movable wing from sliding out.

[0027] This embodiment also provides a joint-surface water-stop structure, comprising a pre-cast concrete block and a post-cast concrete block, with a joint surface between the pre-cast and post-cast concrete blocks. A nested rubber waterstop, as described in this example, is installed across the joint surface. The fixed wing of the nested rubber waterstop is embedded in the pre-cast concrete block, and the movable wing inside the fixed wing extends towards the post-cast concrete block until the slope surface II on the movable wing is in close contact with the slope surface I on the fixed wing. The ribs on the movable wing are engaged in corresponding slots on the fixed wing, and the extended movable wing is embedded in the post-cast concrete block. The internal cavity of the fixed wing is filled with cement grout.

[0028] The construction method of the joint surface waterproofing structure in this embodiment is as follows:

[0029] A template for the pre-cast concrete block is set on the side of the pre-cast concrete block to be poured, and a nested rubber waterstop is set on the side of the pre-cast concrete block near the post-cast concrete block. At this time, the movable wing of the nested rubber waterstop is embedded in the internal cavity of the fixed wing, the cavity is filled with grease, and the opening of the fixed wing is set close to the template.

[0030] After the concrete pre-cast block is poured and the formwork is removed, pull the movable wing out from the fixed wing until the slope surface II on the movable wing is completely in contact with the slope surface I on the fixed wing, and the ribs on the movable wing are inserted into the corresponding slots on the fixed wing.

[0031] Once the movable wing is pulled out into position, cement grout is injected through the grouting pipe, filling the cavity inside the fixed wing.

[0032] Once the movable wing is pulled out into position, pour the concrete block corresponding to the position of the movable wing, and the movable wing is embedded in the concrete block.

[0033] In this embodiment, after all the concrete has been poured, the rubber waterstop spans the joint surface, which serves to block water and prevent leakage; the ribs and the grooves overlap one by one, and the slope surface II is in close contact with the slope surface I, which serves to prevent water from seeping around the joint.

Claims

1. A nested rubber waterstop, characterized in that: The fixed wing has a cavity for placing the movable wing, and an opening is formed on one side of the fixed wing for the movable wing to extend out of the cavity. The movable wing has a movable wing body and the limiting structure I formed on one side of the movable wing body. The fixed wing has a cavity for placing the movable wing, and an opening is formed on one side of the fixed wing for the movable wing to extend out of the cavity.

2. The nested rubber waterstop band of claim 1, wherein: The fixed wing has a cavity for placing the movable wing, and an opening is formed on one side of the fixed wing for the movable wing to extend out of the cavity.

3. The nested rubber waterstop band of claim 1, wherein: The fixed wing has a cavity for placing the movable wing, and an opening is formed on one side of the fixed wing for the movable wing to extend out of the cavity.

4. The nested rubber waterstop of claim 1, wherein: The fixed wing and the movable wing are made of rubber.

5. The nested rubber waterstop band of claim 1, wherein: The construction method of the joint sealing structure comprises the following steps:

6. A joint seal structure, characterized by: The fixed wing is embedded in the concrete pre-cast block, the movable wing in the fixed wing extends out of the concrete pre-cast block and is embedded in the concrete post-cast block, and the cavity in the fixed wing is filled with cement slurry.

7. A construction method of a joint sealing structure, characterized in that: The fixed wing is embedded in the concrete pre-cast block, the movable wing in the fixed wing extends out of the concrete pre-cast block and is embedded in the concrete post-cast block, and the cavity in the fixed wing is filled with cement slurry.

7. A construction method of a joint sealing structure, characterized in that: The fixed wing is embedded in the concrete pre-cast block, the movable wing in the fixed wing extends out of the concrete pre-cast block and is embedded in the concrete post-cast block, and the cavity in the fixed wing is filled with cement slurry. ​ ​

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