Roofing pipe waterproof structure and construction method

Abstract

The application discloses a waterproof structure of a roof pipeline, which comprises a roof concrete top plate, a pre-embedded protective pipe pre-embedded in the roof concrete top plate and a pipeline located on the inner side of the pre-embedded protective pipe. A micro-expansion fine stone concrete is arranged between the pipeline and the pre-embedded protective pipe. A leveling layer, a waterproof coiled material and a waterproof protective layer are sequentially arranged on the roof concrete top plate from bottom to top. The waterproof coiled material is wrapped on the outer side of the pre-embedded protective pipe. A plugging cover is installed on the top of the pre-embedded protective pipe. A sealing ring is clamped between the plugging cover and the pre-embedded protective pipe. The inner ring of the sealing ring is sealed on the outer side of the pipeline. The plugging cover is installed on the outer side of the pipeline. The sealing ring clamped between the plugging cover and the pre-embedded protective pipe is arranged on the outer side of the pipeline. The inner diameter of the sealing ring is smaller than the outer diameter of the pipeline in a natural state. When the sealing ring is not glued, the middle part of the sealing ring is arranged to be bulged upward. When the pipeline is deformed, the bulged part can be used as compensation, so that the waterproof effect is ensured when thermal expansion and cold contraction occur.

Description

Technical Field

[0001] This invention relates to roof pipe waterproofing technology, specifically a waterproofing structure and construction method for roof pipes. Background Technology

[0002] With the advancement of technology and the improvement of living standards, people have increasingly higher requirements for the functionality and aesthetics of buildings. Among them, roofing is a key part of the building construction process, and the quality requirements are even higher. Waterproofing is particularly critical in the roofing construction process, as it affects the functionality. Pipes exiting the roof are a key step in roof waterproofing. Properly handling the waterproofing problem at the base of the pipes exiting the roof is crucial to the waterproofing effect and requires strengthened quality control.

[0003] Currently, to improve the waterproofing function of the base of roof-mounted pipes, existing roof waterproofing techniques for preventing leakage from roof-mounted pipes include: roof pipes extending from pre-reserved openings in the roof concrete slab; the space between the roof pipe and the opening is filled with dry-hardened micro-expansion cement mortar; the upper surface of the roof concrete slab is sequentially layered with a cement mortar leveling layer, a polyurethane waterproof coating, an SBS modified bitumen waterproof coating layer, and an insulation layer; the polyurethane waterproof coating layer rolls upwards around the base of the roof-mounted pipe, evenly wrapping it; a cement mortar slope layer is applied above the polyurethane waterproof coating layer, forming an angle with the horizontal plane near the roof-mounted pipe; a roof waterproof layer is laid above the cement mortar slope layer, and the roof waterproof layer rolls upwards to wrap around the lower end of the roof-mounted pipe. While the above methods can achieve waterproofing, the different materials of the inner walls of the pipe exiting the roof and the pipe opening, as well as the different elastic moduli of thermal expansion and contraction in the sealing layer, can cause gaps between the sealing layers, leading to leakage around the pipe exiting the roof. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention, which adopts the following technical solution:

[0005] A waterproof structure for a roof-mounted pipe includes a roof concrete slab, a pre-embedded protective pipe embedded in the roof concrete slab, and a pipe located inside the pre-embedded protective pipe. Micro-expansion fine aggregate concrete is provided between the pipe and the pre-embedded protective pipe. A leveling layer, a waterproof membrane, and a waterproof protective layer are sequentially provided above the roof concrete slab from bottom to top. The waterproof membrane wraps around the outside of the pre-embedded protective pipe. A sealing cover is installed on the top of the pre-embedded protective pipe. A sealing ring is clamped between the sealing cover and the pre-embedded protective pipe. The inner ring of the sealing ring is fitted onto the outside of the pipe.

[0006] Preferably, the top of the pre-embedded protective pipe is provided with a flange ring, the waterproof membrane is turned outward and wrapped around the outside of the flange ring, and a groove is provided on the inner side of the top of the flange ring.

[0007] Preferably, the top inner side of the sealing tube is provided with a second groove, the first groove and the second groove are in corresponding positions, the first groove and the second groove are suitable for clamping the sealing ring, and the inner ring of the sealing ring is pressed against the outer side of the pipe.

[0008] Preferably, polyurethane sealant is filled between the upper part of the sealing ring and the inner wall of the sealing cover and the outer wall of the pipe, and the inner ring of the sealing ring is tightly pressed against the outer side of the pipe under the action of polyurethane sealant.

[0009] Preferably, the sealing cover has an injection hole on its side, which is suitable for unidirectional injection of adhesive into the sealing cover. An adjustment plate is rotatably mounted on the top of the sealing cover, and both the adjustment plate and the sealing cover have corresponding holes.

[0010] Preferably, a water-stop steel ring is provided on the outer side of the pre-embedded protective pipe.

[0011] Preferably, an insulation layer is laid on top of the waterproof protective layer, and a fine stone reinforced concrete protective layer is laid on the insulation layer, which is equipped with a steel mesh of φ4@200*200mm.

[0012] A construction method for waterproofing structures for pipes protruding from the roof, the construction steps are as follows:

[0013] Step 1: Roof Slab Pouring

[0014] Install the pre-embedded protective pipe, with a water-stop steel ring on the outer side near the bottom of the pre-embedded protective pipe, pour the roof concrete slab, and reserve the pipe opening on the roof.

[0015] Step 2: Crack Filling

[0016] The pipe is fixed inside the pre-embedded protective pipe, and the inside of the pre-embedded protective pipe and the outside of the pipe are filled with micro-expansion fine stone concrete to ensure tightness. The top of the pre-embedded protective pipe is equipped with a flange ring.

[0017] Step 3: Leveling layer construction

[0018] A leveling layer is obtained by spreading self-leveling mortar on the concrete roof slab.

[0019] Step 4: Laying the waterproof membrane

[0020] A waterproof membrane is laid flat on top of the leveling layer, and the waterproof membrane is folded over and wrapped around the outside and top and bottom sides of the pre-embedded protective pipe.

[0021] Step 5: Installation of the sealing cover

[0022] A sealing cover is bolted to the top of the flange ring. A sealing ring is crimped and fixed to the bottom of the sealing cover and the top of the pre-embedded protective pipe. The sealing ring is fitted onto the outside of the pipe. An adjusting plate is set on the top of the sealing cover. The adjusting plate is rotated and positioned on the top of the sealing cover. Holes with corresponding positions are set on the top of the sealing cover and the adjusting plate. An injection hole is opened on the side of the sealing cover.

[0023] The injection hole is connected to the external injection equipment. Adjust the hole on the sealing cover and the hole on the adjusting plate to align. Inject glue into the sealing cover. After glue comes out of the holes on the adjusting plate, adjust the adjusting plate so that the holes on it are staggered from the holes on the sealing cover.

[0024] Step Six: Construction of Waterproof Protective Layer, Insulation Layer, and Fine Aggregate Concrete Layer

[0025] Waterproof mortar is poured on the outside of the waterproof membrane and the outside of the sealing cover. An insulation layer is laid on top of the waterproof mortar, and a fine stone reinforced concrete protective layer is poured on top of the insulation layer, with a steel mesh of φ4@200*200mm inside.

[0026] Step 7: Sealant

[0027] Seal the outside of the pipe with sealant on top of the waterproof mortar.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention avoids the problem of waterproof membrane failure due to tension caused by thermal expansion and contraction of the pipeline by wrapping waterproof membrane around the outside of the pre-embedded protective pipe. A sealing cover is installed on the outside of the pipe, and a sealing ring clamped between the sealing cover and the pre-embedded protective pipe is fitted onto the outside of the pipe. In its natural state, the inner diameter of the sealing ring is smaller than the outer diameter of the pipe. When not using sealant, the middle of the sealing ring is bulged upwards. When the pipe deforms, the bulge compensates for the deformation, ensuring waterproofing even with thermal expansion and contraction. When sealant is applied, the polyurethane sealant inside the sealing cover presses downwards onto the sealing ring, causing the inside of the sealing ring to move downwards and the middle of the sealing ring to bulge downwards. During thermal expansion and contraction of the pipe, the sealing ring remains firmly clamped to the outside, ensuring a tight seal. Even when the top sealant fails, effective waterproofing is still achieved. Compared to directly bonding waterproof membrane, sealant, and pipes, this solution only subjects the pipe to tension in the sealant area or the area of ​​the sealant when the pipe experiences thermal expansion and contraction. This tension is significantly lower than that of existing methods that bond both materials simultaneously. During sealant application, the adjusting disc is rotated to align the holes on the sealing disc with the holes on the adjusting disc. Once sealant has been dispensed from all holes on the adjusting disc, the disc is adjusted to misalign the holes on it with those on the sealing cover, and sealant application continues, forcing the sealing ring to press tightly against the outside of the pipe. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the present invention;

[0032] Figure 3 For the present invention Figure 2 A schematic diagram of the overall structure of the central sealing cover;

[0033] Figure 4 for Figure 3 A schematic diagram showing the position and structure of the central sealing cover and the regulating disc.

[0034] In the diagram: 1. Roof concrete slab; 2. Embedded protective pipe; 3. Pipe; 6. Sealing cover; 7. Sealing ring; 8. Flange ring; 9. Waterproof membrane; 10. Waterproof protective layer; 12. Polyurethane sealant; 13. Injection hole; 14. Adjustment plate; 15. Water-stop steel ring; 16. Fine stone reinforced concrete protective layer; 17. Thermal insulation layer. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Example 1, as Figure 1 As shown, a waterproof structure for a roof-mounted pipe includes a roof concrete slab 1, a pre-embedded protective pipe 2 embedded in the roof concrete slab 1, and a pipe 3 located inside the pre-embedded protective pipe 2. The structure is characterized by a micro-expansion fine aggregate concrete layer between the pipe 3 and the pre-embedded protective pipe 2. Above the roof concrete slab 1, from bottom to top, are a leveling layer, a waterproof membrane 9, and a waterproof protective layer 10. The waterproof membrane 9 wraps around the outside of the pre-embedded protective pipe 2. A sealing cover 6 is installed on the top of the pre-embedded protective pipe 2. A sealing ring 7 is sandwiched between the sealing cover 6 and the pre-embedded protective pipe 2, and the inner ring of the sealing ring 7 is fitted onto the outside of the pipe 3.

[0038] The pre-embedded protective pipe 2 is provided with a flange ring 8 at the top, and the waterproof membrane 9 is turned outward and wrapped around the outside of the flange ring 8. A groove is provided on the inner side of the top of the flange ring 8.

[0039] The sealing cover 6 has a second groove on its top inner side. The first groove and the second groove are in corresponding positions. The first groove and the second groove are suitable for clamping the sealing ring 7. The inner ring of the sealing ring 7 is pressed against the outer side of the pipe 3.

[0040] After installing the pre-embedded protective pipe 2 and the pipe 3, a sealing ring 7 with an inner diameter slightly larger than that of the pipe 3 is fitted onto the outside of the pipe 3. The sealing ring 7 is then lowered to the designated position. By pressing the outer edge of the sealing ring 7 into the groove, the waist of the sealing ring 7 is ensured to bulge upwards. A sealing cover 6 is then bolted onto the top flange ring 8 of the pre-embedded protective pipe 2. Sealant is then applied between the top of the sealing cover 6 and the pipe 3. The remaining steps are as follows.

[0041] The following improvements are made based on the above embodiments, such as... Figure 1 As shown, a water-stop steel ring 15 is provided on the outer side of the pre-embedded protective pipe 2. An insulation layer 17 is laid above the waterproof protective layer 10, and a fine-aggregate reinforced concrete protective layer 16 is provided on the insulation layer 17, with a φ4@200*200mm steel mesh inside. The addition of the insulation layer 17 and the fine-aggregate reinforced concrete protective layer 16...

[0042] The following improvements are made based on the above embodiments, such as... Figures 2 to 4 As shown, polyurethane sealant 12 is filled between the upper part of the sealing ring 7 and the inner wall of the sealing cover 6 and the outer wall of the pipe 3. The inner ring of the sealing ring 7 is tightly pressed against the outer side of the pipe 3 under the action of the polyurethane sealant 12.

[0043] The sealing cover 6 has an injection hole 13 on its side, which is suitable for injecting adhesive into the sealing cover 6 in one direction. An adjustment plate 14 is rotatably installed on the top of the sealing cover 6. Both the adjustment plate 14 and the sealing cover 6 have corresponding holes.

[0044] A sealing cover 6 is bolted to the top of the flange ring 8. A sealing ring 7 is crimped and fixed to the bottom of the sealing cover 6 and the top of the pre-embedded protective pipe 2. The sealing ring 7 is fitted on the outside of the pipe 3. An adjusting plate 14 is provided on the top of the sealing cover 6. The adjusting plate 14 is rotatably arranged on the top of the sealing cover 6. The top of the sealing cover 6 and the adjusting plate 14 are provided with corresponding holes. An injection hole 13 is opened on the side of the sealing cover 6.

[0045] The injection hole 13 is connected to the external injection equipment. The hole on the sealing cover 6 is aligned with the hole on the adjusting plate 14. Glue is injected into the sealing cover 6. After the hole on the adjusting plate 14 has dispensed glue, the adjusting plate 14 is adjusted so that the hole on it is misaligned with the hole on the sealing cover 6, forcing the waist of the sealing ring 7 to also bulge upward.

[0046] A construction method for waterproofing structures for pipes protruding from the roof, the construction steps are as follows:

[0047] Step 1: Roof Slab Pouring

[0048] Install the pre-embedded protective pipe 2, and set a water-stop steel ring 15 on the outer side of the pre-embedded protective pipe 2 near the bottom. Pour the roof concrete slab 1 and reserve the opening for the roof pipe 3.

[0049] Step 2: Crack Filling

[0050] The fixed pipe 3 is placed inside the pre-embedded protective pipe 2, and the inside of the pre-embedded protective pipe 2 and the outside of the pipe 3 are filled with micro-expansion fine stone concrete to ensure tightness. The top of the pre-embedded protective pipe 2 is provided with a flange ring 8.

[0051] Step 3: Leveling layer construction

[0052] A leveling layer is obtained by spreading self-leveling mortar on the concrete roof slab 1.

[0053] Step 4: Laying the waterproof membrane 9

[0054] Waterproof membrane 9 is laid flat on top of the leveling layer. The waterproof membrane 9 is folded over and wrapped around the outside and top and bottom sides of the pre-embedded protective pipe 2.

[0055] Step 5: Installation of sealing cover 6

[0056] A sealing cover 6 is bolted to the top of the flange ring 8. A sealing ring 7 is crimped and fixed to the bottom of the sealing cover 6 and the top of the pre-embedded protective pipe 2. The sealing ring 7 is fitted on the outside of the pipe 3. The waist of the sealing ring 7 bulges upward. An adjusting plate 14 is provided on the top of the sealing cover 6. The adjusting plate 14 is rotated and positioned on the top of the sealing cover 6. The top of the sealing cover 6 and the adjusting plate 14 are provided with corresponding holes. An injection hole 13 is provided on the side of the sealing cover 6.

[0057] The glue injection hole 13 is connected to the external glue injection equipment. The hole on the sealing cover 6 is aligned with the hole on the adjusting plate 14. Glue is injected into the sealing cover 6. After the glue comes out of the hole on the adjusting plate 14, the adjusting plate 14 is adjusted so that the hole on it is misaligned with the hole on the sealing cover 6. After the glue is injected, the waist of the sealing ring 7 still bulges upward.

[0058] Step Six: Construction of Waterproof Protective Layer 10, Thermal Insulation Layer 17, and Fine Aggregate Concrete Layer

[0059] Waterproof mortar is poured on the outside of the waterproof membrane 9 and the outside of the sealing cover 6. The insulation layer 17 is laid on top of the waterproof mortar. A fine stone reinforced concrete protective layer 16 is poured on the insulation layer 17, with a steel mesh of φ4@200*200mm inside.

[0060] Step 7: Sealant

[0061] The top of the waterproof mortar is flush with the top of the sealing cover 6, and the outside of the pipe 3 is sealed with sealant.

[0062] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Having the same material and wall thickness for the sealing cover and the pipe facilitates control over the sealing effect of the sealant. The substitution can be a replacement of some structures, devices, or method steps, or it can be a complete technical solution. Equivalent substitutions or modifications made to the technical solution and inventive concept of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A waterproof structure for a roof-mounted pipe, comprising a roof concrete slab (1), an embedded protective pipe (2) pre-embedded in the roof concrete slab (1), and a pipe (3) located inside the embedded protective pipe (2), characterized in that, Micro-expansion fine stone concrete is provided between the pipe (3) and the pre-embedded protective pipe (2). A leveling layer, a waterproof membrane (9) and a waterproof protective layer (10) are provided above the roof concrete slab (1) from bottom to top. The waterproof membrane (9) is wrapped around the outside of the pre-embedded protective pipe (2). A sealing cover (6) is installed on the top of the pre-embedded protective pipe (2). A sealing ring (7) is clamped between the sealing cover (6) and the pre-embedded protective pipe (2). The inner ring of the sealing ring (7) is sealed on the outside of the pipe (3). The space between the sealing ring (7) and the inner wall of the sealing cover (6) and the outer wall of the pipe (3) is filled with polyurethane sealant (12). The inner ring of the sealing ring (7) is tightly pressed against the outer side of the pipe (3) under the action of the polyurethane sealant (12). The sealing cover (6) is provided with an injection hole (13) on its side. The injection hole (13) is suitable for injecting glue into the sealing cover (6) in one direction. An adjustment plate (14) is rotatably installed on the top of the sealing cover (6). Both the adjustment plate (14) and the sealing cover (6) are provided with corresponding holes.

2. The waterproof structure for roof-mounted pipes according to claim 1, characterized in that, The top of the pre-embedded protective pipe (2) is provided with a flange ring (8), and the waterproof membrane (9) is turned outward and wrapped around the outside of the flange ring (8). A groove is provided on the inner side of the top of the flange ring (8).

3. The waterproof structure for roof-mounted pipes according to claim 2, characterized in that, The top inner side of the sealing cover (6) is provided with a second groove. The first groove and the second groove are in corresponding positions. The first groove and the second groove are suitable for clamping the sealing ring (7). The inner ring of the sealing ring (7) is pressed against the outer side of the pipe (3).

4. The waterproof structure for roof-mounted pipes according to claim 3, characterized in that, A water-stop steel ring (15) is provided on the outside of the pre-embedded protective pipe (2).

5. A waterproof structure for roof-mounted pipes according to claim 4, characterized in that, A thermal insulation layer (17) is laid on top of the waterproof protective layer (10), and a fine stone reinforced concrete protective layer (16) is provided on the thermal insulation layer (17), which is equipped with a steel mesh of φ4@200*200mm.

6. A construction method for a waterproof structure for roof-mounted pipes according to claim 5, characterized in that, The construction steps are as follows: Step 1: Roof Slab Pouring Install the pre-embedded protective pipe (2), and set a water-stop steel ring (15) on the outer side near the bottom of the pre-embedded protective pipe (2). Pour the roof concrete top slab (1) and reserve the opening for the roof pipe (3). Step 2: Crack Filling The pipe (3) is fixed inside the pre-embedded protective pipe (2), and the inside of the pre-embedded protective pipe (2) and the outside of the pipe (3) are filled with micro-expansion fine stone concrete. The top of the pre-embedded protective pipe (2) is provided with a flange ring (8). Step 3: Leveling layer construction A leveling layer is obtained by spreading self-leveling mortar on the concrete roof slab (1); Step 4: Laying the waterproof membrane (9) A waterproof membrane (9) is laid flat on top of the leveling layer. The waterproof membrane (9) is folded over and wrapped around the outside and top and bottom sides of the pre-embedded protective pipe (2). Step 5: Installation of the sealing cover (6) A sealing cover (6) is bolted to the top of the flange ring (8). A sealing ring (7) is crimped to the bottom of the sealing cover (6) and the top of the pre-embedded protective pipe (2). The sealing ring (7) is fitted on the outside of the pipe (3). An adjusting plate (14) is provided on the top of the sealing cover (6). The adjusting plate (14) is rotated and positioned on the top of the sealing cover (6). The top of the sealing cover (6) and the adjusting plate (14) are provided with corresponding holes. An injection hole (13) is provided on the side of the sealing cover (6). The glue injection hole (13) is connected to the external glue injection equipment. The hole on the sealing cover (6) and the hole on the adjusting plate (14) are aligned. Glue is injected into the sealing cover (6). After the glue comes out of the hole on the adjusting plate (14), the adjusting plate (14) is adjusted so that the hole on it is staggered from the hole on the sealing cover (6). Step Six: Construction of Waterproof Protective Layer (10), Thermal Insulation Layer (17), and Fine Aggregate Concrete Layer Waterproof mortar is poured on the outside of the waterproof membrane (9) and the outside of the sealing cover (6). An insulation layer (17) is laid on top of the waterproof mortar. A fine stone reinforced concrete protective layer (16) is laid on the insulation layer (17) and fitted with a steel mesh of φ4@200*200mm inside. Step 7: Sealant Seal the outside of the pipe (3) with sealant on top of the waterproof mortar.

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