Slope drain hole pre-buried structure

Abstract

The utility model discloses a side slope drain hole pre-buried structure which comprises a drain pipe. The stress plug is mounted in a pipe opening of the drainage pipe in an interference manner; a covering body capable of being compressed and expanded is installed at the position, outside the stress plug, of a pipe opening of the drainage pipe. A pull rod is fixed to the stress plug and penetrates through the covering body. A pressing plate is screwed on the pull rod in a threaded mode, and the pressing plate is screwed on the pull rod to press the covering body and prevent the covering body from axially expanding towards a pipe opening of the drainage pipe. When the pressing plate is screwed on the pull rod, the stress plug and the covering body which are in interference fit with the interior of the drainage pipe provide axial stress, so that the pressing plate abuts against the covering body to stop axial expansion. The inner wall of the drainage pipe serves as a stress structure for covering the pipe opening of the drainage pipe, the situation that the operation space of a foundation pit is occupied is avoided, and the problem that construction is inconvenient due to the fact that a detection rod occupies the operation space of the foundation pit is solved.

Description

Technical Field

[0001] The utility model relates to a pre-embedded structure for slope drainage holes, belonging to the technical field of building construction. Background Art

[0002] When building a high-rise building, it is necessary to pre-embed a drain pipe in the slope on the side of the foundation pit excavated downward to form a drainage hole to prevent the accumulated seepage water in the slope from generating pressure and causing collapse. After the drain pipe is pre-embedded, since it is still necessary to spray concrete to reinforce the slope, it is necessary to cover the pipe orifice of the drain pipe to prevent the concrete during concrete spraying from entering the drain pipe and blocking it.

[0003] The existing technology for covering the pipe orifice of the drain pipe can be seen in Chinese Patent Publication No. CN117026924A. Although the plug can cover the pipe orifice of the drain pipe by the force received by the detection rod installed in the foundation pit, the detection rod will occupy the operation space of the foundation pit, resulting in inconvenient construction. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a pre-embedded structure for slope drainage holes.

[0005] The utility model is achieved through the following technical solutions.

[0006] A pre-embedded structure for slope drainage holes provided by the utility model includes:

[0007] A drain pipe;

[0008] A force-bearing plug installed in the pipe orifice of the drain pipe with interference fit;

[0009] A compressible and expandable covering body is installed at the pipe orifice of the drain pipe outside the force-bearing plug.

[0010] It also includes a slope on the side of the foundation pit and inclined. There is a first layer of concrete on the slope. The drain pipe penetrates through the first layer of concrete and is pre-embedded in the slope to form a drainage hole.

[0011] The force-bearing plug is a conical body that penetrates into the pipe orifice of the drain pipe.

[0012] The covering body is composed of an inner expansion layer and an outer sealing layer, and the outer sealing layer seals and wraps the inner expansion layer.

[0013] The contact surface between the outer sealing layer of the covering body and the force-bearing plug is fixedly connected by colloid sealing.

[0014] A pull rod is fixed on the force-bearing plug, and the pull rod penetrates through the covering body; a pressing plate is screwed on the pull rod, and the pressing plate is screwed on the pull rod to press the covering body to prevent it from axially expanding towards the pipe orifice of the drain pipe, and the covering body expands radially towards the pipe diameter of the drain pipe to cover the outer circumference of the pipe orifice of the drain pipe.

[0015] The beneficial effects of the present utility model are as follows: The force-bearing plug is installed in the drain pipe orifice with interference fit. The covering body is compressed and densely pressed into the drain pipe orifice, and the covering body expands to press against the inner wall of the drain pipe with interference fit. When the pressing plate is screwed onto the pull rod, the force-bearing plug and the covering body with interference fit in the drain pipe provide axial force, enabling the pressing plate to press against the covering body to block axial expansion, thus realizing a force-bearing structure that covers the drain pipe orifice with the inner wall of the drain pipe as the force-bearing surface, avoiding the situation of occupying the foundation pit operation space and solving the problem that the detection rod occupies the operation space of the foundation pit, resulting in inconvenient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model without the second layer of concrete layer;

[0017] Figure 2 is a schematic structural diagram of the present utility model with the second layer of concrete layer;

[0018] Figure 3 is Figure 2 a sectional view schematic diagram of;

[0019] In the figure: 1 - slope; 11 - first layer of concrete layer; 12 - second layer of concrete layer; 2 - drain pipe; 3 - force-bearing plug; 4 - covering body; 41 - inner expansion layer; 42 - outer sealing layer; 5 - pressing plate; 6 - pull rod; 7 - foundation pit; 9 - steel bar surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solution of the present utility model will be further described below, but the scope of protection claimed is not limited thereto.

[0021] As Figures 1 to 3 shown.

[0022] A pre-embedded structure for slope drain holes of the present application includes:

[0023] A drain pipe 2 penetrating through the first layer of concrete layer 11 and pre-embedded in the slope 1, and the drain pipe 2 forms a drain hole after the second layer of concrete layer 12 is sprayed and reinforced.

[0024] A force-bearing plug 3 is installed in the orifice of the drain pipe 2 with a slight interference of 0.1 cm. The force-bearing plug 3 is a cone formed by processing a wooden block, and the conical force-bearing plug 3 penetrates into the orifice of the drain pipe 2.

[0025] The outlet of the drain pipe 2 outside the stress plug 3 is installed with a compressible and expandable covering body 4, which is composed of an inner expansion layer 41 and an outer sealing layer 42. The inner expansion layer 41 is made of sponge or waste paper, and the outer sealing layer 42 is made of a plastic bag or tape. The outer sealing layer 42 seals and wraps the inner expansion layer 41. The outer sealing layer 42 prevents water from entering the inner expansion layer 41. The inner expansion layer 41 expands against the outer sealing layer 42 to cover the outlet of the drain pipe 2. The outer sealing layer 42 of the covering body 4 is fixedly connected to the contact surface of the stress plug 3 through a colloid seal.

[0026] The stress plug 3 is integrally formed or threadedly fixed with a pull rod 6, which passes through the covering body 4; a pressure plate 5 is threadedly screwed on the pull rod 6, and the pressure plate 5 is screwed on the pull rod 6. The pressure plate 5 blocks the axial expansion of the covering body 4 toward the pipe opening of the drain pipe 2, and allows the covering body 4 to expand radially toward the pipe opening of the drain pipe 2 as much as possible to cover the outer periphery of the pipe opening of the drain pipe 2.

[0027] After the stress plug 3 is interference-fitted into the mouth of the drain pipe 2, the covering body 4 is compressed and pressed into the mouth of the drain pipe 2, and the covering body 4 expands and presses against the inner wall of the drain pipe 2 with an interference fit. When the pressure plate 5 is screwed on the pull rod 6, the stress plug 3 and the covering body 4 that are interference-fitted in the drain pipe 2 provide axial force, so that the pressure plate 5 presses against the covering body 4 to block the axial expansion, thereby realizing a stress structure that covers the mouth of the drain pipe 2 with the inner wall of the drain pipe 2 as the force, avoiding the situation that the working space of the foundation pit 7 is occupied, and solving the problem that the detection rod will occupy the working space of the foundation pit and cause construction inconvenience. The pressure plate 5 makes the covering body 4 expand radially toward the mouth of the drain pipe 2 to cover the outer periphery of the mouth of the drain pipe 2, thereby avoiding concrete from entering the mouth of the drain pipe 2 when the second concrete layer 12 is sprayed.

[0028] A construction method for a slope drainage hole in the present application comprises the following steps:

[0029] The foundation pit 7 is excavated downwards, and an inclined side slope 1 appears on the side. The side slope 1 is sprayed with concrete to form a first concrete layer 11;

[0030] A hole is opened from the first concrete layer 11 to the inside of the slope 1, and the drainage pipe 2 penetrates the first concrete layer 11 and is pre-buried in the slope 1;

[0031] The steel bar surface 9 is tied to the outside of the first concrete layer 11, and the stress plug 3 is installed in the pipe mouth of the drain pipe 2 with interference fit. The covering body 4 is compressed and pressed into the pipe mouth of the drain pipe 2 and tightened by the pressing plate 5. The covering body 4 expands radially toward the pipe mouth of the drain pipe 2 to cover the outer periphery of the pipe mouth of the drain pipe 2; concrete is sprayed again to cover the steel bar surface 9 and solidify to form the second concrete layer 12, at this time, a pre-buried structure of the slope drainage hole is presented.

[0032] After the second concrete layer 12 is completely solidified, the pressing plate 5 is unscrewed from the pull rod 6 , and the covering body 4 and the stress plug 3 are taken out from the drainage pipe 2 .

Claims

1. A pre-buried structure of a slope drainage hole, characterized in that: include: Drain pipe (2); A stress-bearing plug (3) interference-fitted into the pipe opening of the drainage pipe (2); The pipe opening of the drainage pipe (2) outside the stress-bearing plug (3) is installed with a compressible and expandable covering body (4).

2. The pre-buried structure of the slope drainage hole according to claim 1, characterized in that: It also includes a slope (1) located at the side of the foundation pit (7) and inclined, with a first concrete layer (11) on the slope (1), and a drainage pipe (2) penetrating the first concrete layer (11) and pre-buried in the slope (1) to form a drainage hole.

3. The pre-buried structure of the slope drainage hole according to claim 1, characterized in that: The stress-bearing plug (3) is a cone-shaped body that penetrates into the pipe opening of the drainage pipe (2).

4. The pre-buried structure of the slope drainage hole according to claim 1, characterized in that: The covering body (4) is composed of an inner expansion layer (41) and an outer sealing layer (42), and the outer sealing layer (42) seals and wraps the inner expansion layer (41).

5. The pre-buried structure of the slope drainage hole according to claim 4, characterized in that: The outer sealing layer (42) of the covering body (4) is fixedly connected to the contact surface of the stress-bearing plug (3) through a colloid seal.

6. The pre-buried structure of the slope drainage hole according to claim 1, characterized in that: The stress plug (3) is fixed with a pull rod (6), which passes through the covering body (4); a pressure plate (5) is screwed on the pull rod (6), and the pressure plate (5) is screwed on the pull rod (6) to press the covering body (4) to prevent it from axially expanding toward the outlet of the drain pipe (2), and the covering body (4) expands radially toward the outlet of the drain pipe (2) to cover the outer periphery of the outlet of the drain pipe (2).

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