Waterproof drainage structure of accessible roof deformation joint

Abstract

A waterproof drainage structure of an accessible roof deformation joint is characterized in that the deformation joint is located between a first structure base body and a second structure base body, and the waterproof drainage structure comprises a deformation joint cover plate arranged above the deformation joint, and a cavity is formed between the deformation joint cover plate and the deformation joint; the structural drainage ditch is arranged on the second structural base body, and a concave space is formed between the structural drainage ditch and the second structural base body; the prefabricated cover plate is arranged above the structural drainage ditch; the concave-convex metal supporting plate is arranged above the deformation joint in a crossing mode and located in a cavity between the deformation joint and the deformation joint cover plate, and the concave-convex metal supporting plate inclines towards the structural drainage ditch to form a certain gradient. One end of the water passing pipe is communicated with the structural drainage ditch, and the other end of the water passing pipe is communicated with the cavity, so that rainwater in the cavity is drained into the structural drainage ditch. The hidden danger of rainwater leakage of the deformation joint of the accessible roof is solved, meanwhile, the requirement of an activity place of people on the accessible roof can be met, and great practical value is achieved.

Description

Technical Field

[0001] This invention relates to the field of building technology, specifically to a waterproof and drainage structure for expansion joints in accessible roofs. Background Technology

[0002] To cope with structural deformation caused by factors such as temperature changes, earthquakes, and uneven settlement, and to protect buildings from damage, expansion joints are usually installed on buildings to accommodate structural deformation. However, when expansion joints are exposed on the exterior of the building, such as on the roof or outdoor ground, waterproofing measures are required to prevent rainwater from seeping into the interior through the expansion joints.

[0003] The commonly used waterproofing structure for expansion joints on accessible roofs involves setting up water-blocking flaps on both sides of the expansion joint to prevent surface rainwater from flowing through it and thus avoiding leakage into the expansion joint. At the same time, a waterproof cover plate is installed above the flaps to prevent rainwater from entering the expansion joint.

[0004] However, commonly used structures require the waterproofing flaps on both sides of the expansion joint to extend above the surface of the accessible roof, which inconveniences people moving around on the roof. Furthermore, the protruding components can easily trip people, causing injury and posing a safety hazard, thus failing to meet the requirements for areas with high pedestrian traffic. Additionally, the joints between the waterproofing covers above the flaps are prone to deformation and cracking due to temperature changes, leading to leaks at the joints and water accumulation within the expansion joint, ultimately causing further leakage. Therefore, designing a waterproofing and drainage structure for accessible roof expansion joints that overcomes these shortcomings is an urgent problem to be solved. Summary of the Invention

[0005] Based on the aforementioned technical problems, the purpose of this invention is to provide a waterproof and drainage structure for expansion joints on accessible roofs, which can effectively solve the potential problem of rainwater leakage at expansion joints on accessible roofs, while also meeting the requirements of accessible roof activity areas.

[0006] To achieve the above objectives, the present invention provides a waterproof drainage structure for an expansion joint in an accessible roof. The expansion joint is located between a first structural substrate and a second structural substrate, and includes: an expansion joint cover plate disposed above the expansion joint, forming a cavity with the expansion joint; a structural drainage ditch disposed on the second structural substrate, forming a concave space with the second structural substrate; a prefabricated cover plate disposed above the structural drainage ditch; a concave-convex metal support plate transversely disposed above the expansion joint, located within the cavity between the expansion joint and the expansion joint cover plate, and the concave-convex metal support plate is inclined towards the structural drainage ditch to form a certain slope; and a water pipe, one end of which is connected to the structural drainage ditch and the other end of which is connected to the cavity, so as to discharge rainwater in the cavity into the structural drainage ditch.

[0007] Preferably, a first support is provided above the first structural base, a second support is provided above the second structural base, and the expansion joint cover is provided across the first and second supports to cover the expansion joint; a third support is also provided on the second structural base, and the prefabricated cover is provided across the second and third supports to cover the structural drainage ditch.

[0008] Preferably, the water pipe is disposed inside the second support, and the height of one end of the water pipe communicating with the cavity is lower than the lowest point of the inclination of the concave-convex metal plate.

[0009] Preferably, the expansion joint cover is provided with a first finishing material, and the connection between the expansion joint cover and the first finishing material is bonded with a second waterproof adhesive; the precast cover is provided with a second finishing material, and the connection between the precast cover and the second finishing material is bonded with a third waterproof adhesive.

[0010] Preferably, the expansion joint cover and the precast cover are respectively provided with an inclined slope to drain the rainwater from the top of the expansion joint cover and the precast cover.

[0011] Preferably, the concave-convex metal support plate has a structure consisting of alternating and continuous grooves and protrusions, and the grooves of the concave-convex metal plate are filled with a first waterproof adhesive.

[0012] Preferably, the upper surface of the concave-convex metal support plate is further provided with an additional waterproof membrane.

[0013] Preferably, a first drainage pipe is also provided at the bottom of the structural drainage ditch. The first drainage pipe penetrates the interior of the second structural base, with one end connected to the structural drainage ditch and the other end connected to the exterior of the building structure, so as to drain the rainwater in the structural drainage ditch.

[0014] Preferably, the waterproof and drainage structure of the expansion joint of the accessible roof further includes: a removable waterstop and a roof waterproof membrane located between the concave-convex metal support plate and the expansion joint, and a centrally embedded waterstop located in the middle part of the expansion joint.

[0015] The roof waterproof membrane is located below the removable waterstop, and the removable waterstop and the roof waterproof membrane are arranged across the expansion joint. One end of both is pressed against the upper surface of the first structural substrate by a first metal pressure plate, and the other end of both is pressed against the upper surface of the second structural substrate by a second metal pressure plate. The two ends of the embedded waterstop are respectively pre-embedded in the first structural substrate and the second structural substrate, and it penetrates the middle part of the expansion joint.

[0016] Preferably, when the roof waterproof membrane crosses the expansion joint from the first structural substrate to the second structural substrate, it has an arc-shaped structure in the expansion joint, and the arc-shaped structure is filled with a first waterproof sealant.

[0017] Preferably, a first flexible non-combustible material is used to fill the space between the roof waterproofing membrane and the embedded waterstop.

[0018] Preferably, a second flexible non-combustible material is filled below the embedded waterstop, and a second waterproof sealant is filled below the second flexible non-combustible material.

[0019] Preferably, a metal drainage ditch and a second drainage pipe are also provided below the expansion joint;

[0020] The second drain pipe is located at the bottom of the metal drainage ditch, with one end connected to the metal drainage ditch and the other end connected to the outside of the building structure, so as to discharge rainwater in the metal drainage ditch through the second drain pipe.

[0021] In summary, compared with the prior art, the waterproof and drainage structure of the expansion joint of the accessible roof of the present invention, by setting up a multi-level waterproof and drainage structure with progressive layers, can effectively solve the leakage risk of the expansion joint of the accessible roof while meeting the requirements of the activity area of ​​the people on the accessible roof, and greatly improve the waterproof performance of the expansion joint, which has great practical value. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the specific structure of the present invention;

[0023] In the picture:

[0024] 1. First structural substrate; 2. Second structural substrate; 3. Expansion joint; 4. Embedded waterstop; 5. Removable waterstop; 6. Roofing waterproof membrane; 7. Additional waterproof membrane; 8. First bolt; 9. Second bolt; 10. First metal pressure plate; 11. Second metal pressure plate; 12. First nut; 13. Second nut; 14. Concave-convex metal support plate; 15. First waterproof adhesive; 16. Expansion joint cover plate; 17. First waterproof sealant; 18. Second waterproof sealant; 19. First flexible non-combustible material ; 20. Second flexible non-combustible material; 21. Structural drainage ditch; 22. Metal drainage ditch; 23. First expansion anchor; 24. Second expansion anchor; 25. Precast cover plate; 26. First support; 27. Second support; 28. Third support; 29. ​​First drainage pipe; 30. Insulation layer; 31. Integral concrete layer; 32. Waterproof mortar; 33. Second drainage pipe; 34. First finishing material; 35. Second finishing material; 36. Second waterproof adhesive; 37. Third waterproof adhesive; 38. Water pipe. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 The present invention will be further illustrated by describing a preferred embodiment in detail.

[0026] It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions. They are only used to facilitate and clarify the purpose of illustrating the embodiments of the present invention, and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationship, or adjustments to the size should still fall within the scope of the technical content disclosed in the present invention, provided that they do not affect the effects and objectives that the present invention can produce.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0028] like Figure 1 As shown, in the building structure, there is an expansion joint 3 in the middle part of the first structural base 1 and the second structural base 2. To prevent water leakage from the expansion joint 3, the present invention provides a waterproof drainage structure for the expansion joint of an accessible roof, including: an expansion joint cover plate 16, which is set above the expansion joint 3 and forms a cavity with the expansion joint 3; a structural drainage ditch 21, which is set on the second structural base 2 and forms a concave space with the second structural base 2; a prefabricated cover plate 25, which is set above the structural drainage ditch 21; a concave-convex metal support plate 14, which is set across the expansion joint 3 and located in the cavity between it and the expansion joint cover plate 16. The concave-convex metal support plate 14 is fixed to the first structural base 1 and the second structural base 2 on both sides by anchor bolts and is inclined towards the structural drainage ditch 21 to form a certain slope; and a water pipe 38, one end of which is connected to the structural drainage ditch 21 and the other end of which is connected to the cavity to discharge rainwater in the cavity into the structural drainage ditch 21.

[0029] The first structural base 1 is provided with a first support 26 above it, and the second structural base 2 is provided with a second support 27 above it. The expansion joint cover 16 is provided across the first support 26 and the second support 27 to cover the expansion joint 3, and is fixedly connected to the first support 26 and the second support 27 by anchor bolts respectively. Therefore, a cavity is formed between the expansion joint cover 16 and the expansion joint 3.

[0030] The second structural base 2 is also provided with a third support 28. The prefabricated cover plate 25 is provided across the second support 27 and the third support 28 to cover the structural drainage ditch 21, and is fixedly connected to the second support 27 and the third support 28 respectively by mortar bonding.

[0031] The water pipe 38 is disposed inside the second support 27, and its two ends are respectively connected to the structural drainage ditch 21 and the cavity. Meanwhile, the height of the end of the water pipe 38 connected to the cavity is lower than the lowest point of the inclination of the convex and concave metal plate 14.

[0032] Furthermore, in order to reduce rainwater seepage at the joint between the expansion joint cover 16 and the first support 26 and the second support 27, a first decorative material 34 is provided on the expansion joint cover 16, and a second waterproof adhesive 36 is used to bond the expansion joint cover 16 and the first decorative material 34 together.

[0033] Furthermore, in order to reduce rainwater seepage at the joint between the precast cover plate 25 and the second support 27 and the third support 28, a second finishing material 35 is provided on the precast cover plate 25, and the connection between the precast cover plate 25 and the second finishing material 35 is bonded with a third waterproof adhesive 37.

[0034] Furthermore, to prevent water accumulation on the surfaces of the expansion joint cover 16 and the prefabricated cover 25, the expansion joint cover 16 and the prefabricated cover 25 are each provided with a 2% slope to directly drain rainwater to other locations.

[0035] Specifically, in this embodiment, the first support 26, the second support 27 and the third support 28 are made of cast-in-place concrete; and the first finishing material 34 and the second finishing material 35 are made of the same material as the roof and floor surface layer.

[0036] Furthermore, the concave-convex metal support plate 14 has a structure consisting of alternating and continuous grooves and protrusions. The grooves of the concave-convex metal plate 14 are filled with a first waterproof adhesive 15 to ensure that rainwater can smoothly drain into the water pipe 38 along the inclined slope of the concave-convex metal plate 14, without accumulating in the grooves. It is understood that in the event of typhoons, earthquakes, or other similar events, slight deformation may occur between the first structural base 1, the second structural base 2, and the deformation joint 3. The concave-convex metal support plate 14 can accommodate the relative misalignment and deformation between the first structural base 1 and the second structural base 2.

[0037] Furthermore, an additional waterproof membrane 7 is provided on the upper surface of the concave-convex metal support plate 14 to further prevent rainwater from continuing to seep into the expansion joint 3.

[0038] Furthermore, several water pipes 38 are arranged longitudinally, and the outer wall of each water pipe 38 is covered by cast-in-place concrete of the second support 27. In this embodiment, the diameter of each water pipe 38 is 20mm to 40mm, preferably 30mm, and the distance between any two water pipes 38 is 800mm to 1200mm, preferably 1000mm.

[0039] Furthermore, a waterproof mortar 32 is provided between the water pipe 38 and the second structural substrate 2. While preventing rainwater from seeping in, the waterproof mortar 32 has a certain slope towards the structural drainage ditch 21 to provide support for the water pipe 38.

[0040] Furthermore, a first drainage pipe 29 is provided at the bottom of the structural drainage ditch 21. The first drainage pipe 29 penetrates the interior of the second structural base 2, with one end connected to the structural drainage ditch 21 and the other end connected to the exterior of the building structure to drain rainwater from the structural drainage ditch 21. Specifically, in this embodiment, the structural drainage ditch 21 is constructed of reinforced concrete cast-in-place to form a monolithic concrete layer 31. An insulation layer 30 is provided on the outside of the monolithic concrete layer 31, located between the monolithic concrete layer 31 and the second structural base 2. The first drainage pipe 29 sequentially penetrates the monolithic concrete layer 31, the insulation layer 30, and the second structural base 2 to drain rainwater flowing into the structural drainage ditch 21 to the exterior of the building structure.

[0041] Furthermore, the waterproof drainage structure of the accessible roof expansion joint also includes a removable waterstop 5, a roof waterproof membrane 6, and a centrally embedded waterstop 4 installed on the expansion joint 3; the removable waterstop 5 and the roof waterproof membrane 6 are both located between the concave-convex metal support plate 14 and the expansion joint 3, and the roof waterproof membrane 6 is located below the removable waterstop 5; the centrally embedded waterstop 4 is installed in the middle part of the expansion joint 3.

[0042] Specifically, the removable waterstop 5 and the roof waterproof membrane 6 are arranged across the expansion joint 3. One end of the two is pressed onto the upper surface of the first structural base 1 by the first metal pressure plate 10 and fastened by the first screw 8 and the first nut 12. The other end of the two is pressed onto the upper surface of the second structural base 2 by the second metal pressure plate 11 and fastened by the second screw 9 and the second nut 13.

[0043] Furthermore, when the roof waterproof membrane 6 crosses the expansion joint 3 from the first structural substrate 1 to the second structural substrate 2, it has an arc-shaped structure in the expansion joint 3 to accommodate the staggered deformation between the first structural substrate 1 and the second structural substrate 2; and the arc-shaped structure (i.e., the part between the removable waterstop 5 and the roof waterproof membrane 6 in the expansion joint 3) is filled with a first waterproof sealant 17, which again enhances the water-stopping effect.

[0044] Furthermore, the two ends of the embedded waterstop 4 are respectively pre-embedded in the first structural base 1 and the second structural base 2, and it is installed through the middle part of the deformation joint 3.

[0045] It is understood that the removable waterstop 5 is the first line of defense for the expansion joint 3. When rainwater seeps down from the gap of the concave-convex metal support plate 14, the removable waterstop 5 can prevent the rainwater from continuing to seep down. The roof waterproof membrane 6 is the second line of defense for the expansion joint 3. When rainwater continues to seep down from the removable waterstop 5, the roof waterproof membrane 6 continues to prevent the rainwater from seeping down. The embedded waterstop 4 is the third line of defense for the expansion joint 3. When rainwater continues to seep down from the roof waterproof membrane 6, the embedded waterstop 4 continues to prevent the rainwater from seeping down.

[0046] Furthermore, a first flexible non-combustible material 19 is filled between the roof waterproof membrane 6 and the embedded waterstop 4; a second flexible non-combustible material 20 is filled below the embedded waterstop 4, and a second waterproof sealant 18 is used below the second flexible non-combustible material 20 to seal the lower end of the expansion joint 3, further preventing water leakage from the expansion joint 3.

[0047] Furthermore, a metal drainage ditch 22 and a second drainage pipe 33 are provided below the expansion joint 3. The two sides of the metal drainage ditch 22 are fixed to the first structural base 1 and the second structural base 2 respectively by a first expansion anchor 23 and a second expansion anchor 24. When rainwater seeps down from the expansion joint 3, it will flow into the metal drainage ditch 22. The second drainage pipe 33 is located at the bottom of the metal drainage ditch 22, with one end connected to the metal drainage ditch 22 and the other end connected to the outside of the building structure, so as to discharge the rainwater in the metal drainage ditch 22 through the second drainage pipe 33.

[0048] In order to accommodate the misalignment and deformation between the first structural base 1 and the second structural base 2, the first expansion anchor 23 and / or the second expansion anchor 24 are fixed to the metal drainage ditch 22 by means of a waist-shaped hole.

[0049] In this embodiment, the waterproof drainage structure of the expansion joint of an accessible roof of the present invention has the following specific waterproofing process: After rainwater falls, it first accumulates on the surface of the expansion joint cover plate 16. However, since the surface of the expansion joint cover plate 16 has a certain slope, most of the rainwater is discharged to other places, while a small part of the rainwater will seep down from the surface gaps of the expansion joint cover plate 16 into the cavity below the expansion joint cover plate 16, and then be discharged into the structural drainage ditch 21 through the water pipe 38, and then discharged through the first drainage pipe 29. If the rainwater continues to seep down from the surface gaps of the concave-convex metal support plate 14 into the expansion joint 3, it will be stopped by the removable waterstop 5, the roof waterproof membrane 6 and the embedded waterstop 4 in sequence to prevent the rainwater from continuing to seep down. However, if the amount of rainwater is too large to stop the water, the rainwater will continue to seep down into the metal drainage ditch 22 and be discharged through the second drainage pipe 33.

[0050] In summary, the waterproof and drainage structure for expansion joints on accessible roofs provided by this invention effectively eliminates surface rainwater and seepage water flowing through the expansion joint by setting up multi-level waterproof and drainage measures. This not only effectively solves the leakage risk of expansion joints on accessible roofs and greatly improves the waterproof performance of the expansion joint, but also meets the requirements of accessible roof activity areas.

[0051] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A waterproofing and draining structure of a human-accessible roof deformation joint between a first structural base and a second structural base, characterized by, The utility model relates to a kind of waterproofing structure of building roof, including: Deformation joint cover plate is arranged above the deformation joint, and cavity is formed between the deformation joint cover plate and the deformation joint; Structural drainage ditch is arranged on the second structural base body, and concave space is formed between the structural drainage ditch and the second structural base body; Prefabricated cover plate is arranged above the structural drainage ditch; Rough and smooth metal support plate is arranged across above the deformation joint, located in the cavity between the deformation joint and deformation joint cover plate, and the rough and smooth metal support plate is inclined to the structural drainage ditch direction and forms a certain slope; Water pipe, one end of which is connected to the structural drainage ditch, the other end of which is connected to the cavity, to drain rainwater in the cavity to the structural drainage ditch.

2. The waterproofing and draining structure of a human- accessible roof deformation joint according to claim 1, wherein First support is arranged above the first structural base body, second support is arranged above the second structural base body, and the deformation joint cover plate is arranged across the first support and the second support to cover the deformation joint; Third support is further arranged on the second structural base body, and the prefabricated cover plate is arranged across the second support and the third support to cover the structural drainage ditch.

3. The waterproofing and draining structure of a human- accessible roof deformation joint according to claim 1, wherein The water pipe is arranged inside the second support, and the height of the water pipe connected to the cavity is lower than the inclined low point of the rough and smooth metal plate.

4. The waterproofing and draining structure of a human-entrant roof deformation joint according to claim 1, wherein First finish material is arranged on the deformation joint cover plate, and second waterproof adhesive is used to connect the deformation joint cover plate and the first finish material; Second finish material is arranged on the prefabricated cover plate, and third waterproof adhesive is used to connect the prefabricated cover plate and the second finish material.

5. The waterproofing and draining structure of a human-entering roof deformation joint according to claim 4, characterized in that, The deformation joint cover plate and the prefabricated cover plate are respectively provided with an inclined slope to drain rainwater at the top of the deformation joint cover plate and the prefabricated cover plate.

6. The waterproofing and draining structure of a walking roof deformation joint according to claim 1, wherein, The rough and smooth metal support plate is arranged in an alternating and continuous structure with grooves and protrusions, and the grooves of the rough and smooth metal plate are filled with first waterproof adhesive. Additional waterproofing membrane is further arranged on the upper surface of the rough and smooth metal support plate.

7. The waterproofing and draining structure of a human- accessible roof deformation joint according to claim 1, wherein First drainage pipe is further arranged at the bottom of the structural drainage ditch, which penetrates the inside of the second structural base body, one end of which is connected to the structural drainage ditch, and the other end of which is connected to the outside of the building structure to drain rainwater in the structural drainage ditch.

8. The waterproofing and draining structure of a human- accessible roof deformation joint according to claim 1, wherein Further including: detachable waterstop between the rough and smooth metal support plate and the deformation joint, and roof waterproofing membrane, and middle-buried waterstop in the middle part of the deformation joint; The roof waterproofing membrane is arranged below the detachable waterstop, and the detachable waterstop and the roof waterproofing membrane are arranged across the deformation joint, one end of which is pressed on the upper surface of the first structural base body by first metal pressing plate, and the other end of which is pressed on the upper surface of the second structural base body by second metal pressing plate; Both ends of the middle-buried waterstop are pre-buried in the first structural base body and the second structural base body, respectively, and penetrate the middle part of the deformation joint.

9. The waterproofing and draining structure of a human- accessible roof deformation joint according to claim 8, wherein When the roof waterproofing membrane spans from the first structural base body to the second structural base body through the deformation joint, it is in a circular arc structure in the deformation joint, and the circular arc structure is filled with first waterproofing ointment; First flexible non-combustible material is filled between the roof waterproofing membrane and the middle-buried waterstop. The lower part of the embedded waterstop is filled with a second flexible non-combustible material, and the lower part of the second flexible non-combustible material is filled with a second waterproof grease.

10. The waterproofing and draining structure of a human- accessible roof deformation joint according to claim 9, wherein The deformed joint is further provided with a metal drain and a second drain pipe; The second drain pipe is located at the bottom of the metal drain, one end of which is communicated with the metal drain, and the other end is connected with the outside of the building structure, so as to drain the rainwater in the metal drain through the second drain pipe.

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