Waterproof structure for expansion joint at joint of roof with height difference

Abstract

The utility model provides an expansion joint waterproof structure at a high-low-difference roof interface. The expansion joint waterproof structure comprises an expansion waterproof plate fixedly connected between a high-position outer wall surface and a low-span outer wall; the high outer wall surface is covered with a painting layer, a mounting notch is reserved in the painting layer, and the mounting notch is higher than the set height of the top of the low-span outer wall; and the telescopic waterproof plate is provided with a vertical part which is vertically embedded into the mounting notch, a water drip part which is bent to wrap the convex coping of the low-span outer wall, and an arc-shaped water guide part which is connected between the vertical part and the water drip part at a set radian. The telescopic waterproof plate is formed by integrally pressing the aluminum alloy plate with good plasticity, so that the corrosion resistance is improved, the service life is prolonged, and noise is reduced; and the telescopic waterproof plate has high telescopic protection performance, the qualified rate of the waterproof quality of the high-low-difference roof interface is increased, and the later maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of building engineering construction, and in particular to a waterproof structure for expansion joints at high-low roof interfaces in roof waterproofing construction. Background Art

[0002] At present, the waterproofing effect of expansion joints at the interfaces of high and low roofs is not good, and the qualified rate of waterproofing quality at the interfaces of high and low roofs is low, less than 90%. Especially in some high-rise buildings with high height differences, when leakage occurs, the repair cost is very high, the risk is high, and the repair effect is poor.

[0003] After extensive research, it was found that the main problem causing the low pass rate of waterproof quality of high-low roof interfaces is that the existing high-low roof interfaces are mostly bonded and sealed with flexible waterproof materials, which have poor durability and are difficult to repair; the high-low difference is the part where the building is deformed and lost as a whole, and the flexible waterproof material will also be torn due to the overall deformation (contraction and expansion) of the building. After several cycles of high-temperature exposure and low-temperature freezing, the flexible membrane waterproof layer ages, cracks, and partially loses its waterproof function. The color of the flexible membrane waterproof layer is a single black color, which looks bad. If a layer of cement mortar protective layer is added on the outside, it is easy to crack and fall off, and the color is gray, which also looks bad.

[0004] For this reason, some high-low roof interfaces are sealed with stainless steel and other waterproof devices. Ordinary stainless steel sheets have poor plasticity, are prone to cracks during bending, and are inconvenient to process and install. During use, there is a lot of noise in stormy conditions, which has a great impact on the living environment. Utility Model Content

[0005] The present application provides a waterproof expansion joint structure at the interface of a high-low roof, which adopts an aluminum alloy plate with strong plasticity to increase corrosion resistance, improve service life, and reduce noise generation; the telescopic waterproof plate has strong telescopic protection performance, which improves the qualified rate of waterproof quality at the interface of the high-low roof, and the qualified rate is increased from the previous 85% to 90% to 95% to 99%, and the use function is good, reducing maintenance costs during later use. The use of the waterproof expansion joint structure at the interface of the high-low roof can improve construction quality and be economical and reasonable.

[0006] The present application provides a waterproof structure for expansion joints at the interface of a high-low roof, comprising a telescopic waterproof plate fixedly connected between a high-span exterior wall and a low-span exterior wall;

[0007] The high exterior wall surface is covered with a paint layer, the paint layer is provided with a mounting notch, and the mounting notch is higher than the top set height of the low-span exterior wall;

[0008] The telescopic waterproof plate comprises a vertical portion vertically embedded in the installation slot, a protruding drip line portion bent and wrapped around the low-span exterior wall, and an arc-shaped water guide portion connected between the vertical portion and the drip line portion with a set arc.

[0009] The telescopic waterproof board in the present application is formed by integrally pressing an aluminum alloy plate with good plasticity, which increases corrosion resistance, improves service life, and reduces noise generation; and the telescopic waterproof board has strong telescopic protection performance, improves the qualified rate of waterproof quality of high and low roof interfaces, and reduces subsequent maintenance costs.

[0010] In a specific implementation scheme, the height of the mounting notch is 80 mm to 100 mm;

[0011] The depth of the installation slot is 30 mm to 40 mm. The vertical portion is located in the installation slot and has strong waterproof performance.

[0012] In a specific possible implementation manner, when the vertical portion is vertically embedded in the interior of the installation slot,

[0013] The vertical part and the high outer wall surface are parallel and connected to each other, so that the vertical part can be embedded deeper and the waterproof performance can be improved.

[0014] In a specific possible implementation scheme, the vertical portion is fixedly connected to the high outer wall surface by a plurality of first cement nails;

[0015] Any two adjacent first cement nails are 300 mm to 400 mm apart. The installation and fixing performance is stable.

[0016] In a specific possible implementation manner, after the plurality of first cement nails fix the vertical portion on the high outer wall surface,

[0017] The interior of the installation slot is sealed with concrete that is flush with the paint layer. The aluminum alloy plate has strong corrosion resistance, and the complete sealing of the concrete prevents water seepage.

[0018] In a specific implementation scheme, the installation notch is set at a height above the top of the low-span exterior wall of:

[0019] The bottom of the installation notch is 150 mm to 300 mm higher than the top of the protruding top of the low-span outer wall. The height difference is reasonable, which enhances the waterproof qualification rate.

[0020] In a specific possible implementation scheme, the drip line is shaped and bent to wrap around the protruding top of the low-span exterior wall, and then extends to the inner corner of the low-span exterior wall. The lower protrusion and the drip edge of the protruding top of the low-span exterior wall effectively prevent dripping and water seepage, and the drip line is wrapped for more comprehensive protection.

[0021] In a specific possible implementation scheme, the drip line portion is connected to the bottom plane of the protruding cap of the low-span exterior wall by a plurality of second cement nails;

[0022] Any two adjacent second cement nails are 300 mm to 400 mm apart. The installation and fixing performance is stable.

[0023] In a specific possible implementation manner, the angle between the drip line portion and the arc-shaped water guide portion is ≤90°;

[0024] The arc angle of the arc-shaped water guide portion is 10° to 30°. The arc-shaped water guide has stable drainage performance and strong expansion and contraction performance.

[0025] In a specific implementation scheme, the telescopic waterproof plate is formed by integrally pressing an aluminum alloy plate with a thickness of 1 mm to 1.5 mm. The use of an aluminum alloy plate with strong plasticity as the telescopic waterproof plate has strong plasticity, corrosion resistance and low noise, which prolongs the service life and reduces the later maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the expansion joint waterproof structure at the interface of the high-low roof provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of the retractable waterproof plate provided in an embodiment of the present application.

[0028] Figure Number:

[0029] Installation notch-1, telescopic waterproof board-2, vertical part-21, curved water guide part-22, drip line part-23, cement nail-3, low-span exterior wall-4, protruding top-5, high exterior wall surface-6, and plaster layer-7. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] In order to facilitate the understanding of the expansion joint waterproof structure at the high-low roof interface provided by the embodiment of the present application, its application scenario is first explained. After a lot of research, it is found that the main problem causing the low pass rate of waterproof quality of the high-low roof interface is that the existing high-low roof interface is mostly bonded and sealed with flexible waterproof materials, which have poor durability and are difficult to repair; the high-low difference is usually the failure part of the overall deformation of the building, and the flexible waterproof material will also be torn due to the overall deformation (contraction and expansion) of the building. After several cycles of high-temperature exposure and low-temperature freezing, the flexible coiled waterproof layer ages, cracks, and partially loses its waterproof function. The color of the flexible coiled waterproof layer is a single black color, which looks bad. A layer of cement mortar protective layer is added on the outside, which is easy to crack and fall off, and the color is gray, which looks bad. For this reason, some high-low roof interfaces are sealed with waterproof devices such as stainless steel. Ordinary stainless steel thin plates have poor plasticity, and cracks are prone to bending processing, which is inconvenient to process and install; during use, the noise is large in stormy conditions, which has a great impact on the living environment. In view of this, the present application provides a waterproof structure for expansion joints at the interfaces of high and low roofs, which adopts aluminum alloy plates with strong plasticity to increase corrosion resistance, improve service life, and reduce noise generation; the telescopic waterproof plate has strong telescopic protection performance, which improves the qualified rate of waterproof quality at the interfaces of high and low roofs, and the qualified rate is increased from the previous 85% to 90% to 95% to 99%, and the use function is good, reducing maintenance costs during later use. The use of this waterproof structure for expansion joints at the interfaces of high and low roofs can improve construction quality and be economical and reasonable.

[0033] refer to Figure 1The expansion joint waterproof structure at the interface of the high-low roof provided in the embodiment of the present application comprises: a telescopic waterproof plate 2; the telescopic waterproof plate 2 is formed by pressing an aluminum alloy plate with strong plasticity in one piece by a machine. The telescopic waterproof plate 2 is connected between the low-span external walls 4 by tilting downward from the high external wall 6. The aluminum alloy plate is used as the material body of the telescopic waterproof plate 2, which effectively avoids the problem that the flexible waterproof material and the flexible coiled waterproof layer will be cracked due to the overall deformation (contraction and expansion) of the building, and the material will age and crack after several cycles of high-temperature exposure and low-temperature freezing, and the waterproof function will be partially lost; or because the ordinary stainless steel sheet has poor plasticity, cracks are easily formed during bending processing, and processing and installation are inconvenient; during use, the noise is relatively large in stormy conditions, which has a greater impact on the living environment.

[0034] The telescopic waterproof board 2 made of aluminum alloy plate material has good telescopic waterproof performance, and has strong sealing performance between the high external wall 6 and the low-span external wall 4, which increases the qualified rate from the previous 85% to 90% to 95% to 99%, and has good performance, reducing maintenance costs during later use. The use of the expansion joint waterproof structure at the interface of the high-low roof can improve the construction quality and be economical and reasonable.

[0035] Specific, combined Figure 2 As shown in the figure, a telescopic waterproof board 2 is connected between the high external wall 6 and the low span external wall 4 in a fixed connection manner; the high external wall 6 is covered with a paint layer 7, and the paint layer 7 is reserved with an installation notch 1, and the installation notch 1 is higher than the top set height of the low span external wall 4. The installation notch 1 is reserved along the length of the high external wall 6, and an integral telescopic waterproof board 2 is used to connect between the high external wall 6 and the low span external wall 4, without an overlap relationship in the middle, so as to avoid deformation and water seepage in the middle overlap part caused by telescopic deformation.

[0036] When the retractable waterproof board 2 in the present application is connected and fixed to the high external wall surface 6, it is connected to the high external wall surface 6 by an embedded connection method. When the plaster layer 7 is pasted on the high external wall surface 6, an installation groove 1 is reserved to achieve embedded assembly waterproofing.

[0037] The plaster layer 7 is a concrete layer, which is pasted on the high external wall surface 6 with a thickness of 30mm~40mm. The height of the installation slot 1 is 80mm~100mm; the depth of the installation slot 1 is 30mm~40mm. In addition, a vertical portion 21 is provided at one end of the telescopic waterproof board 2 connected to the high external wall surface 6. The vertical portion 21 is assembled inside the installation slot 1 in a vertically embedded manner. The length of the vertical portion 21 is between 15mm and 20mm, and when the vertical portion 21 is vertically embedded in the installation slot 1, the vertical portion 21 and the high external wall surface 6 are parallel and fit together. The vertical portion 21 is located in the installation slot 1 and has a strong waterproof performance. When the vertical portion 21 is fit and fixed to the high external wall surface 6, a deeper embedding distance of the vertical portion 21 is achieved to improve the waterproof performance.

[0038] When the vertical part 21 is fixedly assembled on the installation slot 1, the vertical part 21 is fixedly connected to the high outer wall surface 6 by a plurality of first cement nails; any two adjacent first cement nails are 300 mm to 400 mm apart. The installation and fixing performance is stable.

[0039] At the same time, in order to improve the seepage rainwater generated by rainwater entering the interior of the installation slot 1 in the presence of a heavy rain tilt state, after a plurality of first cement nails fix the vertical portion 21 on the high outer wall surface 6, the interior of the installation slot 1 is sealed with concrete that is level with the plaster layer. The aluminum alloy plate has strong corrosion resistance, and the complete sealing of the concrete prevents water seepage. Moreover, in the embodiment of the present application, the installation slot 1 is set higher than the top of the low-span outer wall 4 by a height of: the bottom of the installation slot 1 is 150mm~300mm higher than the top of the protruding top 5 of the low-span outer wall 4. The height difference is reasonable, which enhances the waterproof qualification rate.

[0040] For reference Figure 1 and Figure 2 The telescopic waterproof board 2 also includes: a drip line portion 23 of the protruding top 5 that is bent and wrapped around the low-span exterior wall 4, and an arc-shaped water-guiding portion 22 connected between the vertical portion 21 and the drip line portion 23 with a set curvature. The angle between the drip line portion 23 and the arc-shaped water-guiding portion 22 is ≤90°; the curvature of the arc-shaped water-guiding portion 22 is 10°~30°. The arc-shaped diversion and drainage performance is stable, and it has strong telescopic performance. It should be specifically explained that the curvature of the arc-shaped water-guiding portion 22 is a downward-inclined arc, which ensures high drainage performance while having high telescopic ductility.

[0041] The drip line portion 23 is bent in a special shape to wrap around the protruding top 5 of the low-span external wall 4, and then extends to the inner corner of the low-span external wall 4. The lower protrusion and the drip edge of the protruding top 5 of the low-span external wall 4 effectively prevent dripping and water seepage, and the drip line portion 23 wraps and protects more comprehensively. When there is no protruding top at the top of the low-span external wall 4, the drip line portion 23 of the telescopic waterproof board 2 also has strong connection waterproof performance.

[0042] When the drip line portion 23 is fixed, the drip line portion 23 is connected to the bottom plane of the protruding top 5 of the low-span outer wall 4 by a plurality of second cement nails; any two adjacent second cement nails are 300 mm to 400 mm apart. The installation and fixing performance is stable.

[0043] It should be specifically explained that the first cement nail and the second cement nail in the present application are both 3X40~80mm cement nails 3, which are fixed on the high external wall surface 6 and the protruding top 5 by penetrating the telescopic waterproof plate 2.

[0044] After being bent, the drip line portion 23 forms a downwardly protruding drip edge with the bottom of the protruding top 5, and a plane connecting the drip edge extends toward the inner corner, and the cement nail 3 is nailed on the plane extending toward the inner corner.

[0045] The telescopic waterproof board 2 is formed by integrally pressing a whole sheet of aluminum alloy plate with a thickness of 1mm to 1.5mm. The aluminum alloy plate with strong plasticity is used as the telescopic waterproof board 2, which has strong plasticity, corrosion resistance and low noise, prolongs the service life and reduces the later maintenance cost. The telescopic waterproof board 2 in the present application is formed by integrally pressing a whole sheet of aluminum alloy plate with good plasticity, which increases the corrosion resistance, improves the service life and reduces the noise generation; and the telescopic waterproof board 2 has strong telescopic protection performance, improves the qualified rate of waterproof quality of the high-low difference roof interface, and reduces the later maintenance cost.

[0046] A person of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In line with the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as above, which are not provided in detail for the sake of simplicity.

[0047] In addition, when specific details are set forth to describe exemplary embodiments of the present disclosure, it is apparent to those skilled in the art that one or more embodiments of the present specification may be implemented without or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0048] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. A waterproof structure for expansion joints at the interface of a high-low roof, comprising a telescopic waterproof plate fixedly connected between a high-span external wall and a low-span external wall; characterized in that: The high exterior wall surface is covered with a paint layer, the paint layer is provided with a mounting notch, and the mounting notch is higher than the top set height of the low-span exterior wall; The telescopic waterproof plate comprises a vertical portion vertically embedded in the installation slot, a protruding drip line portion bent and wrapped around the low-span exterior wall, and an arc-shaped water guide portion connected between the vertical portion and the drip line portion with a set arc.

2. The waterproof structure of expansion joints at the interface of high and low roofs according to claim 1 is characterized in that: The height of the installation notch is 80 mm to 100 mm; The depth of the installation notch is 30 mm to 40 mm.

3. The waterproof structure of expansion joints at the interface of high and low roofs according to claim 1 is characterized in that: When the vertical portion is vertically embedded in the installation slot, The vertical portion and the high outer wall surface are parallel and closely connected to each other.

4. The waterproof structure of expansion joints at the interface of high and low roofs according to claim 3 is characterized in that: The vertical portion is fixedly connected to the high outer wall surface by a plurality of first cement nails; Any two adjacent first cement nails are 300 mm to 400 mm apart.

5. The waterproof structure of expansion joints at the interface of high and low roofs according to claim 4 is characterized in that: After the plurality of first cement nails fix the vertical portion on the high outer wall surface, The interior of the installation slot is sealed with concrete that is flush with the plaster layer.

6. The waterproof structure for expansion joints at the interface of a high-low roof according to any one of claims 1 to 5, characterized in that: The installation notch is set at a height above the top of the low-span exterior wall: The bottom of the installation notch is 150 mm to 300 mm higher than the top of the protruding top of the low-span exterior wall.

7. The waterproof structure of expansion joints at the interface of high and low roofs according to claim 1 is characterized in that: The drip line portion is specially bent to wrap around the protruding top of the low-span exterior wall and then extends to the inner corner of the low-span exterior wall.

8. The waterproof structure of expansion joints at the interface of high and low roofs according to claim 7 is characterized in that: The drip line portion is connected to the bottom plane of the protruding top of the low-span exterior wall through a plurality of second cement nails; Any two adjacent second cement nails are 300 mm to 400 mm apart.

9. The waterproof structure of expansion joints at the interface of high and low roofs according to claim 1, characterized in that: The angle between the drip line and the arc-shaped water guide is ≤90°; The arc angle of the arc-shaped water-guiding portion is 10° to 30°.

10. The waterproof structure of expansion joints at the interface of high and low roofs according to claim 1, characterized in that: The telescopic waterproof plate is integrally pressed from an aluminum alloy plate with a thickness of 1 mm to 1.5 mm.

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