Anti-leakage structure of vertical pipe penetrating through cast-in-place structure

Abstract

The utility model relates to a cast-in-place structure vertical pipe penetrating anti-seepage structure which comprises a structural beam plate, a penetrating pipe hole is formed in the structural beam plate, the pipe hole is in a big-end-up horn mouth shape, a pipe sleeve is arranged in the pipe hole, a drainage vertical pipe is arranged in the pipe sleeve, and a water stop ring is arranged outside the pipe sleeve. A first pouring hole-filling layer and a second pouring hole-filling layer are sequentially arranged between the inner wall of the pipe hole and the outer wall of the pipe sleeve from bottom to top, the thickness of the first pouring hole-filling layer is 2 / 3 of the thickness of the structural beam plate, the top face of the second pouring hole-filling layer is an inclined face, and the second pouring hole-filling layer inclines downwards in the direction from the center of the drainage stand pipe to the periphery. The lower end of the inclined face is flush with the upper end face of the pipe hole, and the upper end of the inclined face is at least 50 mm higher than the lower end of the inclined face. The water stop ring is located on the side, close to the second pouring hole filling layer, of the first pouring hole filling layer. The structural strength and the anti-seepage effect of the anti-seepage structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical pipeline waterproofing, in particular to a vertical pipe anti-leakage structure passing through a cast-in-place structure. Background Art

[0002] The main reasons for the leakage of seepage sleeves, pipes, floor drains and cast-in-place structures (pipe roots) around pipe roots and floor drains in bathrooms, kitchens, unenclosed balconies, enclosed balconies with water distribution points, water pipe wells, structural transition layers, top-floor rooms and air-conditioning panels are as follows: the concrete of the pipe holes passing through the cast-in-place structure is not poured densely, the pipes are not equipped with water stop rings or the water stop rings are set in the wrong position, the water stop rings are not firmly bonded or tightly, resulting in seepage channels and leakage; the pipe holes are simply blocked with debris and then filled with cement mortar, causing water seepage; the concrete of the pipe roots and floor drains is not higher than the board surface, water accumulates in this area for a long time, causing damage to the waterproof layer and leakage; the pipe holes are directly drilled with a water drill, and then the pipes are installed and fine stone concrete is poured, and the rough surface around the pipe holes is not treated, and no interface treatment is performed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an anti-leakage structure for a vertical pipe passing through a cast-in-place structure, aiming to improve the structural strength and anti-leakage effect of the anti-leakage structure.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A structure for preventing leakage of vertical pipes through cast-in-place structures, comprising a structural beam plate, wherein a through-hole is provided in the structural beam plate, wherein the hole is in a trumpet shape with a larger top and a smaller bottom, a pipe sleeve is provided in the pipe hole, a drainage vertical pipe is provided in the pipe sleeve, and a water stop ring is provided outside the pipe sleeve;

[0006] A first pouring and grouting layer and a second pouring and grouting layer are sequentially arranged between the inner wall of the pipe hole and the outer wall of the pipe sleeve from bottom to top, the thickness of the first pouring and grouting layer is 2 / 3 of the thickness of the structural beam slab, the top surface of the second pouring and grouting layer is an inclined surface, which is inclined downward along the center of the drainage riser toward the surrounding direction, the lower end of the inclined surface is flush with the upper end surface of the pipe hole, and the upper end of the inclined surface is at least 50mm higher than the lower end;

[0007] The water stop ring is located on a side of the first pouring and grouting layer close to the second pouring and grouting layer.

[0008] Further technical solutions are:

[0009] The gap between the pipe sleeve and the drainage riser is sealed by filling with flexible waterproof material.

[0010] The top surface of the second pouring and grouting layer and the root of the drainage riser exposed from the top surface of the second pouring and grouting layer are provided with a local waterproof layer.

[0011] The height of the local waterproof layer attached to the drainage riser is 200-250mm.

[0012] A leveling layer is provided on the surface of the structural beam plate, and an outer waterproof layer is provided on the surface of the leveling layer.

[0013] The first pouring and grouting layer and the second pouring and grouting layer are both made of fine stone concrete.

[0014] The strength grade of the fine stone concrete is at least one grade higher than the concrete strength of the structural beam slab.

[0015] The pipe sleeve is a steel sleeve, and the water stop ring is welded on the pipe sleeve.

[0016] A supporting template is provided at the lower end of the pipe hole, and a top of the supporting template is used to support the bottom of the first pouring and grouting layer.

[0017] The beneficial effects of the utility model are as follows:

[0018] In this embodiment, fine stone concrete is poured twice between the inner wall of the pipe hole and the outer wall of the pipe sleeve to form the first and second pouring and grouting layers from bottom to top. The two grouting layers improve the sealing of the casting structure. The top surface of the second pouring and grouting layer is higher than the top surface of the structural beam and slab and is inclined, which can effectively prevent leakage caused by water accumulation at the root of the pipe. The fine stone concrete has a high strength grade, and combined with the support formwork at the bottom support, the strength and stability of the grouting layer are greatly improved.

[0019] The gap between the pipe sleeve and the drainage riser of the utility model is filled and sealed with a flexible waterproof material, and compared with the filling with cement mortar and fine stone concrete materials, the filling density is better.

[0020] The height of the water stop ring of the utility model is reasonably set, and the welding with the pipe sleeve is full and dense, and the stability is good.

[0021] Other features and advantages of the present invention will be described in the following description or will be understood by implementing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0023] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0024] In the figure: 1. Structural beams and slabs; 2. Drainage risers; 3. Sand-lime plastering layer; 4. First pouring and grouting layer; 5. Second pouring and grouting layer; 6. Local waterproof layer; 7. Leveling layer; 8. Water-stop ring; 9. External waterproof layer; 10. Support formwork; 11. Pipe sleeve; 12. Flexible waterproof material. DETAILED DESCRIPTION

[0025] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, the anti-seepage structure of the cast-in-situ structure riser of this embodiment includes a structural beam 1, a penetrating pipe hole is provided in the structural beam 1, the pipe hole is in the shape of a trumpet that is larger at the top and smaller at the bottom, a pipe sleeve 11 is provided in the pipe hole, a drainage riser 2 is provided in the pipe sleeve 11, and a water stop ring 8 is provided outside the pipe sleeve 11; a first pouring grouting layer 4 and a second pouring grouting layer 5 are arranged in sequence from bottom to top between the inner wall of the pipe hole and the outer wall of the pipe sleeve 11, the thickness of the first pouring grouting layer 4 is 2 / 3 of the thickness of the structural beam 1, and the top surface of the second pouring grouting layer 5 is an inclined surface, which is inclined downward along the center of the drainage riser 2 toward the surrounding directions, the lower end of the inclined surface is flush with the upper end surface of the pipe hole, and the upper end of the inclined surface is at least 50 mm higher than the lower end; the water stop ring 8 is located on the side of the first pouring grouting layer 4 close to the first pouring grouting layer 4.

[0027] The gap between the pipe sleeve 11 and the drainage riser 2 is sealed by using a flexible waterproof material 12 .

[0028] A local waterproof layer 6 is provided on the top surface of the second pouring and grouting layer 5 and the root of the drainage riser 2 exposed from the top surface of the second pouring and grouting layer 5.

[0029] Specifically, the height of the local waterproof layer 6 attached to the drainage riser 2 is 200-250 mm.

[0030] Specifically, a leveling layer 7 is provided on the surface of the structural beam slab 1 , and an outer waterproof layer 9 is provided on the surface of the leveling layer 7 .

[0031] Wherein, the first pouring and grouting layer 4 and the second pouring and grouting layer 5 are both made of fine stone concrete.

[0032] Specifically, an expansion agent is mixed into the fine stone concrete, and the strength grade of the fine stone concrete is at least one grade higher than the concrete strength of the structural beam slab 1 .

[0033] The pipe sleeve 11 is a steel sleeve, and the water stop ring 8 is welded to the pipe sleeve 11 .

[0034] A supporting formwork 10 is provided at the lower end of the pipe hole, and the top of the supporting formwork 10 is used to abut against the bottom of the first pouring and grouting layer 4.

[0035] The construction process of this embodiment is as follows: welding a water stop ring 8 outside the pipe sleeve 11; laying out the line for positioning; pre-embedding the pipe sleeve 11 in the center of the pipe hole; construction of cast-in-place structure; construction of masonry and secondary concrete structure; wall plastering to form a sand-lime plastering layer 3; installing a support formwork 10 at the lower end of the pipe hole through a hanging line; pouring a hole filling layer in the hole around the pipe sleeve 11 twice, the first pouring to a position 2 / 3 of the distance from the pipe hole surface, the second pouring to about 50mm above the pipe hole surface, and sloping within 200mm around the exhaust duct; installing a drainage riser 2; using a flexible waterproof material 12 to fill the gap between the drainage riser 2 and the pipe sleeve 11 in layers; making a local waterproof layer 6 on the outside of the drainage riser 2, the pipe sleeve 11 and the second pouring hole filling layer, the height of which exceeds the upper mouth of the pipe sleeve 11 by 200mm; cleaning the base layer; pouring a leveling layer to form a leveling layer 7; construction of two waterproof layers; inspection and acceptance; water filling test and recording.

[0036] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A structure for preventing leakage of a vertical pipe through a cast-in-place structure, characterized in that: It comprises a structural beam plate (1), wherein a pipe hole is provided through the structural beam plate (1), wherein the pipe hole is in a trumpet shape with a larger top and a smaller bottom, wherein a pipe sleeve (11) is provided in the pipe hole, wherein a drainage riser (2) is provided in the pipe sleeve (11), and a water stop ring (8) is provided outside the pipe sleeve (11); A first pouring and grouting layer (4) and a second pouring and grouting layer (5) are sequentially arranged between the inner wall of the pipe hole and the outer wall of the pipe sleeve (11) from bottom to top, the thickness of the first pouring and grouting layer (4) being 2 / 3 of the thickness of the structural beam plate (1), the top surface of the second pouring and grouting layer (5) being an inclined surface, which is inclined downward in the surrounding direction along the center of the drainage riser (2), the lower end of the inclined surface being flush with the upper end surface of the pipe hole, and the upper end of the inclined surface being at least 50 mm higher than the lower end; The water stop ring (8) is located on a side of the first pouring and grouting layer (4) close to the second pouring and grouting layer (5).

2. The anti-leakage structure for a vertical pipe passing through a cast-in-place structure according to claim 1 is characterized in that: The gap between the pipe sleeve (11) and the drainage riser (2) is sealed by filling with a flexible waterproof material (12).

3. The anti-leakage structure for a vertical pipe passing through a cast-in-place structure according to claim 1 is characterized in that: A local waterproof layer (6) is provided on the top surface of the second pouring and grouting layer (5) and at the root of the drainage riser (2) exposed from the top surface of the second pouring and grouting layer (5).

4. The anti-leakage structure for a vertical pipe passing through a cast-in-place structure according to claim 3 is characterized in that: The height of the local waterproof layer (6) attached to the drainage riser (2) is 200-250 mm.

5. The anti-leakage structure for a vertical pipe passing through a cast-in-place structure according to claim 1, characterized in that: The surface of the structural beam plate (1) is provided with a leveling layer (7), and the surface of the leveling layer (7) is provided with an external waterproof layer (9).

6. The anti-leakage structure for a vertical pipe passing through a cast-in-place structure according to claim 1, characterized in that: The first pouring and grouting layer (4) and the second pouring and grouting layer (5) are both made of fine stone concrete.

7. The anti-leakage structure for a vertical pipe passing through a cast-in-place structure according to claim 6, characterized in that: The strength grade of the fine stone concrete is at least one grade higher than the concrete strength of the structural beam slab (1).

8. The anti-leakage structure for a vertical pipe passing through a cast-in-place structure according to claim 1, characterized in that: The pipe sleeve (11) is a steel sleeve, and the water stop ring (8) is welded on the pipe sleeve (11).

9. The anti-leakage structure for a vertical pipe passing through a cast-in-place structure according to claim 1, characterized in that: A supporting template (10) is provided at the lower end of the pipe hole, and a top portion thereof is used to abut against the bottom of the first pouring and grouting layer (4).

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