Roof deformation joint structure
By incorporating multi-layered waterproofing and drainage design, combined with concrete baffles and decorative roofing, the problems of leakage and stress concentration in traditional roof expansion joint structures are solved, enhancing the waterproofing performance and stability of the roof and enabling it to adapt to building deformation under different conditions.
Patent Information
- Application Number
- CN202423071644.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Traditional roof expansion joint structures pose risks of leakage, stress concentration, and damage caused by uneven deformation.
The design employs a multi-layered waterproofing system, including an arc-shaped structure of a lower and upper waterproofing layer, combined with drainage ditches and inclined concrete blocks, a concrete baffle and decorative top cover, and the use of elastic sealing strips and a bottom sealing structure to enhance waterproofing performance and structural stability.
It effectively prevents water leakage, reduces stress concentration, alleviates uneven deformation, improves the waterproof performance and stability of the roof structure, and extends its service life.
Smart Images
Figure CN223675690U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building engineering, especially a roof deformation joint structure. BACKGROUND
[0002] Traditional roof deformation joint structures are mainly used to deal with the deformation and displacement of buildings under factors such as temperature changes, humidity changes, and settlement. The basic design usually includes the following components: deformation joint: the deformation joint is a space reserved in the roof of a building, designed to allow the building to move freely under different conditions, preventing cracks or other damage. Filler material inside the joint: elastic filler materials such as polyurethane or silicone are usually used inside the deformation joint to provide a certain degree of flexibility, adapting to the deformation of the roof while preventing water infiltration. Steel bars or other reinforcing materials: reinforcing materials such as steel bars are usually placed on both sides of the deformation joint to improve the stability of the structure and prevent damage under stress concentration. Waterproof treatment: Since the roof deformation joint is a weak link for water leakage, special attention is paid to waterproof treatment during design, common measures including the use of waterproof membranes, setting up drainage systems, etc. Through these designs, traditional roof deformation joint structures can effectively deal with various deformations and displacements of buildings during use, maintaining the safety and durability of the building. Although the traditional roof deformation joint structure can effectively solve the problem of building deformation, it also has some defects and limitations: 1. Waterproof performance problem: Although waterproof measures (such as waterproof membranes, drainage systems, etc.) are usually added to the design of the deformation joint, these measures are prone to wear or aging due to long-term exposure to the external environment (especially in areas where roofs are prone to water accumulation or heavy rain), resulting in a decrease in waterproof performance. In particular, the aging of the filler material inside the joint (such as the aging of polyurethane or silicone material) may cause leakage at the joint, leading to water leakage inside the roof and affecting the structural safety and comfort of the building. 2. Stress concentration: Steel bars or other reinforcing materials are usually placed on both sides of the deformation joint, although these reinforcing materials can improve the stability of the structure, if the design is not proper or the construction is not precise, stress concentration may occur near the deformation joint. This stress concentration may cause cracks or local damage near the deformation joint, affecting the overall stability of the building. 3. Non-uniform deformation: Due to factors such as settlement and temperature changes under different conditions, the roof around the deformation joint may experience non-uniform deformation. In particular, when there are problems in the design or construction quality of the building structure, the deformation at the deformation joint may exceed expectations, causing structural damage or damage. 5. Temperature difference effect: In some areas, the temperature difference of the roof is large, and the thermal expansion and contraction of building materials may exert a large pressure on the deformation joint. If the design of the deformation joint does not fully consider the deformation caused by this temperature difference, the deformation joint structure may be damaged due to excessive deformation. SUMMARY
[0003] The utility model discloses a roof deformation joint structure, which is characterized by the following technical solutions.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions.
[0005] A roof deformation joint structure, comprising a deformation joint; the deformation joint is arranged between roof panels; an upturned plate is arranged at the top edge of the roof panel; a drainage ditch is arranged above the roof panel on both sides of the deformation joint and close to the upturned plate;
[0006] The roof deformation joint structure further comprises a concrete pressing block, a lower waterproof layer, a concrete baffle and a decorative top cover; the lower waterproof layer is laid above the roof panel, and an upper waterproof layer is laid on the top of the lower waterproof layer; the lower waterproof layer and the upper waterproof layer cover the upper part of the deformation joint at the deformation joint, and the cross section of the lower waterproof layer and the upper waterproof layer at the deformation joint is an arc surface that is concave downward; the concrete pressing block is in a strip shape and is arranged on the upper waterproof layer between the deformation joint and the drainage ditch, and a notch is arranged at the bottom of the concrete pressing block and close to the side of the upturned plate; the upturned plate is located in the notch; the top surface of the concrete pressing block is an inclined surface that is inclined from the side of the deformation joint to the side of the drainage ditch; a protruding strip is arranged at the top of the concrete pressing block and close to the side of the deformation joint; the concrete baffle is arranged at the top of the concrete pressing block, and the top surface of the concrete baffle is higher than the top surface of the protruding strip; a top sealing strip is arranged in the deformation joint and close to the upper end of the deformation joint; the cross section of the top sealing strip at the deformation joint is an arc surface that is concave downward, and the two sides of the top sealing strip are respectively attached to the top of the protruding strip; a pressing plate is arranged on the top of the top sealing strip; the cross section of the pressing plate is in a wave shape, and the two ends of the pressing plate are fixed through embedded parts embedded in the protruding strip; the decorative top cover is installed on the top of the pressing plate, and a space is left between the two sides of the decorative top cover and the concrete baffle, and an elastic sealing strip is filled in the space.
[0007] Preferably, a bottom sealing structure is arranged at the bottom of the deformation joint and between the bottoms of the two roof panels; the bottom sealing structure comprises a bottom cover plate and a bottom sealing strip; the cross section of the bottom sealing strip is an arc surface that is convex upward and is arranged at the lower part of the deformation joint; the left and right sides of the bottom sealing strip respectively extend out of the lower end of the deformation joint and are attached to the bottom of the roof panel on the corresponding side; the bottom cover plate covers the lower end of the deformation joint, and the left and right ends of the bottom cover plate are respectively attached to the bottom sealing strip; the left and right ends of the bottom cover plate and the bottom sealing strip are fixed to the roof panel through fasteners.
[0008] Preferably, the top of the roof panel is sequentially provided from bottom to top with a waterproof coating layer, an insulation layer, a sloping layer, the lower waterproof layer, the upper waterproof layer, an isolation layer, a waterproof mortar layer and a concrete layer; the waterproof coating layer is coated on the top surface of the roof panel and the outer surface of the upper turning plate; the sloping layer is arranged on the top surface of the insulation layer, and the top surface of the sloping layer is a slope surface near the drainage ditch; the lower waterproof layer is laid on the top of the sloping layer, and the lower waterproof layer extends upward to cover the upper turning plate and the deformation joint at the corner of the sloping layer and the upper turning plate; the upper waterproof layer and the isolation layer are sequentially laid on the outer side of the lower waterproof layer; the concrete block is pressed along the long axis of the upper turning plate on the isolation layer; the concrete layer is fully laid on the top of the isolation layer, and there is a gap between the edge of the concrete layer and the concrete block; the gap between the concrete layer and the concrete block forms a drainage ditch; the waterproof mortar layer is arranged on the top of the isolation layer in the drainage ditch and the side wall on both sides of the drainage ditch.
[0009] Preferably, the slope of the inclined surface of the top of the concrete block is 5%, and the water on the top of the concrete block flows into the drainage ditch; there is a gap between the side edge of the side of the concrete block near the drainage ditch and the side surface of the corresponding side of the concrete block; a baffle is arranged on the top of the concrete block on the side of the concrete baffle near the drainage ditch; a drainage ditch cover plate is arranged above the drainage ditch; one side of the drainage ditch cover plate is arranged on the top of the concrete layer, and the other side of the drainage ditch cover plate is arranged on the concrete block.
[0010] Preferably, the top of the pressing plate is provided with positioning strips on both sides; the bottom of the decorative top cover is provided with strip-shaped grooves corresponding to the positioning strips; the positioning strips are inserted into the strip-shaped grooves.
[0011] Preferably, the pre-embedded part comprises an embedded plate and a connecting bolt; the embedded plate is embedded in the convex strip, and a bolt hole is arranged on the embedded plate; the connecting bolt is arranged in the pressing plate and is threadedly connected with the embedded plate.
[0012] Preferably, the distance between the two sides of the decorative top cover and the concrete baffle is not less than 10 mm; the width of the convex strip is not less than 50 mm.
[0013] Compared with the prior art, the utility model has the following characteristics and beneficial effects.
[0014] 1. The utility model discloses a waterproof layer is configured to the multilayer, especially the arc shape of lower waterproof layer is effective to guide water flow into the drainage ditch, avoid the ponding, enhance the waterproof performance of roof. The arc design of top sealing strip and the wave shape structure of pressing plate can further enhance the sealing property of roof, prevent moisture penetration to the indoor, ensure the waterproof capacity of deformation joint structure. In addition, the arc design and the wave shape structure design can reduce the damage of deformation joint structure caused by the sharp deformation of structure on both sides of deformation joint, can provide greater adaptation range, can solve the uneven deformation of roof around deformation joint due to the settlement of building under different conditions, temperature change and other factors. Especially when the building structure design or construction quality has the problem, can lead to the deformation of deformation joint to exceed the expectation, thereby causing the structural damage or damage.
[0015] 2. The utility model discloses a drainage ditch and the concrete pressing block of inclination are set up respectively on both sides of deformation joint, ensure that rainwater can be quickly drained away, thereby reducing the influence of water stagnation on deformation joint structure, reduce the damage caused by water penetration. Meanwhile, the top of concrete pressing block is provided with concrete baffle, and the stability and durability of overall structure are increased, which helps to prevent loosening or displacement at deformation joint.
[0016] 3. The utility model discloses the setting of decorative top cover not only beautiful, can also avoid the waterproof structure in deformation joint and so on long -term exposure to external environment, and these waterproof measures are vulnerable to wear or aging, lead to the decrease of waterproof performance. The elastic sealing strip design of both sides of decorative top cover can effectively compensate the tiny displacement produced due to temperature difference, humidity change and other reasons, keep the sealing property and stability of structure, and the decorative top cover is ensured the reasonable spacing between concrete baffle through the plug -in design of positioning strip, both positioning decorative top cover and facilitating the installation and adjustment of decorative top cover.
[0017] 4. The utility model discloses the setting of deformation joint through reasonable design, and in combination with concrete baffle, concrete pressing block, can effectively alleviate the deformation of building due to temperature difference or other factors, prevent roof structure from cracking or deforming. The bottom cover plate and bottom waterstop of bottom sealing structure are cooperatively designed, and the lower end of deformation joint is closed, which helps to avoid moisture penetration from the bottom and protect the roof structure from water damage.
[0018] The utility model will be further explained in detail in connection with the drawings.
[0019] Fig. 1 It is the overall structure schematic diagram of roof deformation joint structure of the utility model.
[0020] Fig. 2 It is the structure schematic diagram that concrete baffle is set up on the top of concrete pressing block of the utility model.
[0021] Fig. 3This is a schematic diagram of the connection structure between the pressure plate and decorative top cover of this utility model and the protruding strips on both sides of the expansion joint.
[0022] Attached reference numerals: 1-Expansion joint, 2-Roof panel, 3-Upper flap, 4-Drainage ditch, 5-Concrete block, 6-Lower waterproof layer, 7-Concrete baffle, 8-Decorative top cover, 9-Notch, 10-Raised strip, 11-Top sealing strip, 12-Pressure plate, 13-Elastic sealing strip, 14-Bottom cover plate, 15-Bottom sealing strip, 16-Waterproof coating layer, 17-Insulation layer, 18-Slope layer, 19-Upper waterproof layer, 20-Isolation layer, 21-Waterproof mortar layer, 22-Concrete layer, 23-Baffle, 24-Drainage ditch cover plate, 25-Positioning strip, 26-Strip groove, 27-Thin plate, 28-Embedded part, 28.1-Embedded plate, 28.2-Connecting bolt. Detailed Implementation
[0023] like Figs. 1-3 As shown, this roof expansion joint structure includes an expansion joint 1; the expansion joint 1 is located between roof panels 2; an upper flap 3 is provided at the top edge of the roof panel 2; and drainage ditches 4 are respectively provided above the roof panels 2 on both sides of the expansion joint 1 and near the upper flap 3.
[0024] The roof expansion joint structure also includes a concrete block 5, a lower waterproof layer 6, a concrete baffle 7, and a decorative top cover 8; the lower waterproof layer 6 is laid on top of the roof panel 2, and an upper waterproof layer 19 is laid on top of the lower waterproof layer 6; the lower waterproof layer 6 and the upper waterproof layer 19 cover the upper part of the expansion joint 1 at the expansion joint, and the cross-section of the lower waterproof layer 6 and the upper waterproof layer 19 at the expansion joint 1 is a downwardly concave arc surface; the concrete block 5 is strip-shaped and is pressed on the upper waterproof layer 19 between the expansion joint 1 and the drainage ditch 4, and a notch 9 is provided at the bottom of the concrete block 5, near the side of the upper flap 3; the upper flap 3 is located in the notch 9; the top surface of the concrete block 5 is an inclined surface that slopes from the expansion joint 1 side to the drainage ditch 4 side; at the top of the concrete block 5, A raised strip 10 is provided near the side of the expansion joint 1; the concrete baffle 7 is set on top of the concrete block 5, and the top surface of the concrete baffle 7 extends beyond the top surface of the raised strip 10; a top sealing strip 11 is provided inside the expansion joint 1, near the upper end of the expansion joint 1; the cross-section of the top sealing strip 11 at the expansion joint 1 is a downwardly concave arc surface, and the two sides of the top sealing strip 11 are respectively attached to the top of the raised strip 10; a pressure plate 12 is provided on the top of the top sealing strip 11; the cross-section of the pressure plate 12 is wavy, and the two ends of the pressure plate 12 are fixed by embedded parts 28 embedded in the raised strip 10; the decorative top cover 8 is installed on the top of the pressure plate 12, and there is a gap between the two sides of the decorative top cover 8 and the concrete baffle 7, and the gap is filled with an elastic sealing strip 13.
[0025] In the embodiment, the bottom of the deformation joint 1 is provided with a bottom sealing structure between the bottoms of the two roof panels 2; the bottom sealing structure comprises a bottom cover plate 14 and a bottom sealing strip 15; the bottom sealing strip 15 has an upwardly convex arc-shaped cross section and is arranged at the lower part of the deformation joint 1; the left and right sides of the bottom sealing strip 15 respectively extend out of the lower end of the deformation joint 1 and are attached to the bottom of the roof panel 2 on the corresponding side; the bottom cover plate 14 covers the lower end of the deformation joint 1, and the left and right ends of the bottom cover plate 14 are respectively attached to the bottom sealing strip 15; the bottom cover plate 14 and the bottom sealing strip 15 are fixed to the roof panel 2 by fasteners at the two ends.
[0026] In the embodiment, the bottom sealing strip 15 is made of a rubber flashing strip, and in order to maintain the upwardly convex shape of the bottom sealing strip 15, an arc-shaped thin plate 27 is arranged at the bottom of the bottom sealing strip 15; the two sides of the thin plate 27 are bent outwardly horizontally and are fixed to the bottom surface of the roof panel 2 by fasteners.
[0027] In the embodiment, the top of the roof panel 2 is sequentially provided from bottom to top with a waterproof coating layer 16, a thermal insulation layer 17, a sloping layer 18, a lower waterproof layer 6, an upper waterproof layer 19, an isolation layer 20, a waterproof mortar layer 21 and a concrete layer 22; the waterproof coating layer 16 is coated on the top surface of the roof panel 2 and the outer surface of the upper turning plate 3; the sloping layer 18 is arranged on the top surface of the thermal insulation layer 17, and the top surface of the sloping layer 18 is a slope surface near the drainage ditch 4, the slope surface faces the side of the drainage ditch 4, and the slope is 0.3%; the lower waterproof layer 6 is laid on the top of the sloping layer 18, and the lower waterproof layer 6 extends upwardly at the corner of the sloping layer 18 and the upper turning plate 3 to cover the upper turning plate 3 and the deformation joint 1; the concrete block 5 is pressed along the long axis of the upper turning plate 3 to the lower waterproof layer 6 at the corner; the concrete layer 22 is fully laid on the top of the lower waterproof layer 6, and there is a gap between the edge of the concrete layer 22 and the concrete block 5; the gap between the concrete layer 22 and the concrete block 5 forms the drainage ditch 4; the upper waterproof layer 19 is laid on the top of the lower waterproof layer 6 in the drainage ditch 4, and the side edge of the upper waterproof layer 19 near the deformation joint 1 covers the pressing plate 12 on the top of the convex strip 10; the isolation layer 20 and the waterproof mortar layer 21 are sequentially arranged on the outer surface of the upper waterproof layer 19, and the edges of the isolation layer 20 and the waterproof mortar layer 21 near the deformation joint 1 are fixed to the convex strip 10 by fasteners.
[0028] In the embodiment, the slope of the top inclined surface of the concrete block 5 is 5%, and the water on the top of the concrete block 5 flows into the drainage ditch 4; the spacing between the side edge of the concrete block 5 close to the drainage ditch and the side surface of the concrete block 5 corresponding to the side is not less than 60mm; the baffle 23 is arranged on the top of the concrete block 5 and close to the side of the concrete baffle 7 close to the drainage ditch 4; the drainage ditch cover plate 24 is arranged above the drainage ditch 4; one side of the drainage ditch cover plate 24 is arranged on the top of the concrete layer 22, and the other side of the drainage ditch cover plate 24 is arranged on the concrete block 5.
[0029] In the embodiment, the positioning strips 25 are arranged on the top of the pressing plate 12; the strip-shaped grooves 26 are arranged on the bottom of the decorative top cover 8 and correspond to the positioning strips 25; and the positioning strips 25 are inserted into the strip-shaped grooves 26.
[0030] In the embodiment, the spacing between the two sides of the decorative top cover 8 and the concrete baffle 7 is not less than 10mm; the width of the convex strip 10 is not less than 50mm; and the width of the concrete baffle 7 is not less than 300mm.
[0031] In the embodiment, the width of the upturned plate 3 is 150mm, and the width of the deformation joint is 100mm; and the bottom cover plate 14 is made of an aluminum alloy plate.
[0032] In the embodiment, the fastener is a screw or a rivet.
[0033] The above embodiments are not exhaustive of the specific embodiments, and other embodiments can also be provided; the above embodiments are intended to illustrate the utility model, and are not intended to limit the protection scope of the utility model; all applications derived from the simple changes of the utility model fall within the protection scope of the utility model.
Claims
1. A roof expansion joint structure, comprising an expansion joint (1); the expansion joint (1) is disposed between roof panels (2); an upper flap (3) is disposed at the top edge of the roof panels (2); characterized in that: Drainage ditches (4) are provided above the roof panels (2) on both sides of the expansion joint (1) and near the top flap (3). The roof expansion joint structure also includes a concrete block (5), a lower waterproof layer (6), a concrete baffle (7), and a decorative top cover (8); the lower waterproof layer (6) is laid on top of the roof panel (2), and an upper waterproof layer (19) is laid on top of the lower waterproof layer (6); the lower waterproof layer (6) and the upper waterproof layer (19) cover the upper part of the expansion joint (1) at the expansion joint; and the cross-section of the lower waterproof layer (6) and the upper waterproof layer (19) at the expansion joint (1) is a downwardly concave arc surface; the concrete block (5) is strip-shaped and is pressed on top of the upper waterproof layer (19) between the expansion joint (1) and the drainage ditch (4), and a notch (9) is provided at the bottom of the concrete block (5) on the side near the upper flap (3); the upper flap (3) is located in the notch (9); the top surface of the concrete block (5) is an inclined surface that slopes from the expansion joint (1) side to the drainage ditch (4) side; A raised strip (10) is provided on the top of the concrete block (5) near the expansion joint (1); the concrete baffle (7) is provided on the top of the concrete block (5), and the top surface of the concrete baffle (7) extends beyond the top surface of the raised strip (10); a top sealing strip (11) is provided inside the expansion joint (1) near the upper end of the expansion joint (1); the cross-section of the top sealing strip (11) at the expansion joint (1) is a downwardly concave arc surface, and the two sides of the top sealing strip (11) are respectively attached to the top of the raised strip (10); a pressure plate (12) is provided on the top of the top sealing strip (11); the cross-section of the pressure plate (12) is wavy, and the two ends of the pressure plate (12) are fixed by the pre-embedded parts (28) embedded in the raised strip (10); the decorative top cover (8) is installed on the top of the pressure plate (12), and there is a gap between the two sides of the decorative top cover (8) and the concrete baffle (7), and the gap is filled with an elastic sealing strip (13).
2. The roof expansion joint structure according to claim 1, characterized in that: A sealing structure is provided at the bottom of the expansion joint (1) and between the bottoms of the two roof panels (2); the sealing structure includes a bottom cover plate (14) and a bottom sealing strip (15); the cross-section of the bottom sealing strip (15) is an upwardly convex arc shape, and it is provided at the lower part of the expansion joint (1); the left and right sides of the bottom sealing strip (15) extend out of the lower port of the expansion joint (1) and are attached to the bottom of the roof panel (2) on the corresponding side; the bottom cover plate (14) covers the lower port of the expansion joint (1), and the left and right ends of the bottom cover plate (14) are attached to the bottom sealing strip (15); both ends of the bottom cover plate (14) and the bottom sealing strip (15) are fixed to the roof panel (2) by fasteners.
3. The roof expansion joint structure according to claim 1, characterized in that: The top of the roof panel (2) is provided with, from bottom to top, a waterproof coating layer (16), an insulation layer (17), a slope-forming layer (18), a lower waterproof layer (6), an upper waterproof layer (19), an isolation layer (20), a waterproof mortar layer (21), and a concrete layer (22); the waterproof coating layer (16) is applied to the top surface of the roof panel (2) and the outer surface of the upper flap (3); the slope-forming layer (18) is placed on the top surface of the insulation layer (17), and the top surface of the slope-forming layer (18) is sloping near the drainage ditch (4); the lower waterproof layer (6) is laid on top of the slope-forming layer (18), and the lower waterproof layer (6) is located between the slope-forming layer (18) and the upper flap (3). The corner extends upwards to cover the upper flap (3) and the expansion joint (1); the upper waterproof layer (19) and the isolation layer (20) are laid sequentially on the outside of the lower waterproof layer (6); the concrete block (5) is pressed along the long axis of the upper flap (3) on the isolation layer (20); the concrete layer (22) is fully laid on the top of the lower waterproof layer (6), and there is a gap between the edge of the concrete layer (22) and the concrete block (5); the gap between the concrete layer (22) and the concrete block (5) forms a drainage ditch (4); the waterproof mortar layer (21) is set on the top of the isolation layer (20) in the drainage ditch (4) and on the side walls on both sides of the drainage ditch (4).
4. The roof expansion joint structure according to claim 1, characterized in that: The slope of the top slope of the concrete block (5) is 5%, and the water on the top of the concrete block (5) flows into the drainage ditch (4); there is a gap between the side of the concrete block (5) near the drainage ditch and the side of the corresponding side of the concrete block (5); a baffle (23) is provided on the top of the concrete block (5) and on the side of the concrete baffle (7) near the drainage ditch (4); a drainage ditch cover (24) is provided above the drainage ditch (4); one side of the drainage ditch cover (24) is erected on the top of the concrete layer (22), and the other side of the drainage ditch cover (24) is erected on the concrete block (5).
5. The roof expansion joint structure according to claim 1, characterized in that: Positioning strips (25) are provided on both sides of the top of the pressure plate (12); a strip groove (26) is provided at the bottom of the decorative top cover (8) corresponding to the positioning strip (25); the positioning strip (25) is inserted into the strip groove (26).
6. The roof expansion joint structure according to claim 1, characterized in that: The embedded part (28) includes an embedded plate (28.1) and a connecting bolt (28.2); the embedded plate (28.1) is embedded in the protrusion (10) and has bolt holes; the connecting bolt (28.2) passes through the pressure plate (12) and is threadedly connected to the embedded plate (28.1).
7. The roof expansion joint structure according to claim 1, characterized in that: The width of the gap between the two sides of the decorative top cover (8) and the concrete baffle (7) is not less than 10mm; the width of the convex strip (10) is not less than 50mm.