A waterproofing structure for roof deformation joint

Abstract

The utility model provides a roof deformation joint waterproof and drainage structure belongs to deformation joint construction technical field. Including apron, the apron sets up in the top and bottom of deformation joint, the middle part of apron is provided with the bending deformation area, the apron is fixed on the base layer through anchor bolt, the elastic filling body is placed in the bending deformation area of top apron middle part, the fireproof rock wool is filled in the inside of deformation joint, and the inside of deformation joint still is filled with flexible waterproof material. Through moving apron from traditional top arrangement to concrete base layer and setting apron with bending deformation area, form the structure cover layer with self -adaptation ability, at the same time, the elastic filling body of rigid support structure is added in first waterproof layer and second waterproof layer, effectively supports first waterproof layer and second waterproof layer, avoids its because gravity effect and occurs droop, deformation or cracking.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint construction technology, and in particular to a roof expansion joint waterproofing and drainage structure. Background Technology

[0002] The existing construction measures for roof expansion joints mainly refer to 14J936 "Construction of Expansion Joints", as shown in the attached instructions. Figure 1 As shown in the figure, the roof expansion joint construction method in this drawing set mainly adopts the form of prevention + drainage. A stainless steel cover plate with a thickness of ≥6mm is set on the top of the roof expansion joint and fixed by an aluminum alloy base and stainless steel waterproof bolts. An elastic waterstop is set inside the expansion joint. The middle of the expansion joint is filled with thermal insulation material, which also serves as a template. A special metal drainage ditch (aluminum alloy drainage ditch) and a DN75 vertical pipe drainage system are set at the bottom to achieve the purpose of drainage.

[0003] However, in actual use, the waterproof membrane and waterstop are located inside the expansion joint, and there is a lack of effective carrier support structure under the waterproof material. After long-term use, the waterproof material is prone to sagging and deformation under its own weight, and cracks or detachment are likely to occur at the joint, which greatly increases the risk of leakage. Therefore, this application provides a roof expansion joint waterproofing structure to meet the needs. Utility Model Content

[0004] The technical problem this invention aims to solve is to provide a waterproofing structure for roof expansion joints, overcoming the problems of insufficient support for waterproofing materials, easy deformation and sagging of the structure under gravity, joint cracking, complex construction, and high cost in existing technologies. By optimizing the waterproofing structure design, establishing a stable and reliable waterproofing carrier, and simplifying the drainage structure, this invention effectively improves the structural stability and durability of the waterproofing layer, reduces construction costs, enhances the overall project quality, and meets the higher performance and economic requirements of modern buildings for roof expansion joint waterproofing systems.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A roof expansion joint waterproofing structure includes:

[0007] A cover plate is provided at the top and bottom of the expansion joint, and a bending deformation zone is provided in the middle of the cover plate. The cover plate is fixed to the base layer by anchor bolts.

[0008] An elastic filler is placed in the bending deformation zone in the middle of the top cover plate;

[0009] Fireproof rock wool, wherein the fireproof rock wool is filled inside the expansion joint, and the expansion joint is also filled with a flexible waterproof material;

[0010] The top of the cover plate is sequentially covered with a first waterproof layer and a second waterproof layer, and the first and second waterproof layers are located in the bottom structural layer of the base layer.

[0011] Optionally, the anchor bolts are φ8 stainless steel plastic expansion bolts with a spacing of ≤300mm.

[0012] Optionally, the joints of the base layer are filled with an adhesive layer.

[0013] Optionally, the flexible waterproof material is polyethylene foam.

[0014] Optionally, the first and second waterproof layers are hot-air welded TPO waterproof membranes.

[0015] Optionally, the base layer can be either a concrete layer or a decorative panel.

[0016] Optionally, the elastic filler is a foamed polyethylene round rod.

[0017] Compared with the prior art, this utility model has at least the following beneficial effects:

[0018] By moving the cover plate from the traditional top placement down to the concrete base layer and installing a cover plate with a bending deformation zone, a self-adaptive structural covering layer is formed. Simultaneously, elastic fillers with rigid support structures are added to the first and second waterproof layers to effectively support them and prevent sagging, deformation, or cracking due to gravity. The first and second waterproof layers, made of TPO waterproof membrane, fully cover the cover plate and are laid on the base layer, with expansion allowances left at the joints to accommodate structural displacement. This invention simplifies the structural layers and construction process by eliminating traditional metal drainage ditches and riser systems, significantly improving the overall stability and economy of the waterproofing system. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of this application;

[0021] Figure 2 This is an enlarged schematic diagram of the structure of this application.

[0022] [Figure Labels]

[0023] 1. Roof; 2. Base layer; 3. Cover plate; 31. Bending deformation zone; 4. Elastic filler; 5. First waterproof layer; 6. Second waterproof layer; 7. Fireproof rock wool; 8. Flexible waterproof material; 9. Adhesive layer.

[0024] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0025] The following is a detailed description of a roof expansion joint waterproofing structure provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; for some known technologies, those skilled in the art can also use other alternative methods to implement them; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0026] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0027] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0028] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes something “above” something without an intervening feature or layer.

[0029] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0030] Example 1

[0031] like Figure 1 and Figure 2 As shown, this embodiment of the present invention provides a roof expansion joint waterproofing structure, installed on the base layer 2 of the roof 1. It includes two cover plates 3 located at the top and bottom of the expansion joint. The cover plates 3 are made of galvanized steel plates. A bending deformation zone 31 is formed in the middle of the cover plate 3 using a stamping device. The bending deformation zone 31 can accommodate the expansion and contraction of the structures on both sides of the expansion joint. The cover plates 3 are fixed to the base layer 2 by φ8 stainless steel plastic expansion anchor bolts at 300mm intervals, enhancing overall stability. An elastic filler 4, which is a foamed polyethylene round rod, is placed in the bending deformation zone 31 in the middle of the cover plate 3. A first waterproof layer 5 and a second waterproof layer 6, made of hot-air welded TPO waterproof membrane, are covered above the cover plates 3. The elastic filler 4 provides rigid support for the first and second waterproof layers 5 and 6, preventing them from sagging, deforming, or cracking due to gravity. The first and second waterproof layers 5 and 6 are located in the bottom layer structure of the base layer 2. The first waterproof layer 5 and the second waterproof layer 6 are fully bonded to the base layer 2 on both sides, and the overlaps are sealed with hot air welding or waterproof adhesive. The joints of the base layer 2 are filled with an injection layer 9, which is a waterproof sealant, thus forming a complete and closed waterproof system. The interior of the expansion joint is filled with fireproof rock wool 7 and flexible waterproof material 8. The flexible waterproof material 8 is foamed polyethylene. The fireproof rock wool 7 and the flexible waterproof material 8 are used to fill the expansion joint, thus providing both thermal insulation and buffering functions.

[0032] Among them, base layer 2 is a concrete layer or decorative panel.

[0033] Example 2

[0034] like Figure 1 and Figure 2 As shown, the construction method for roof expansion joint waterproofing structure applicable to newly built high-rise residential projects is as follows:

[0035] Clean the base layer 2 (concrete) on roof 1 to ensure that the expansion joint area is flat, dry, and free of oil and dust;

[0036] A cover plate 3 is installed at the bottom of the reserved expansion joint using φ8 stainless steel plastic expansion anchor bolts, and fireproof rock wool 7 and flexible waterproof material 8 are filled into the expansion joint to make it dense and resilient, with both thermal expansion and contraction adaptability and thermal insulation performance.

[0037] At the top of the expansion joint, another cover plate 3 with a bending deformation zone 31 in the middle is installed by φ8 stainless steel plastic expansion anchor bolts. The width covers both sides of the expansion joint by ≥100mm and is continuously arranged along the joint axis.

[0038] An elastic filler 4 is installed in the bending deformation zone 31 in the middle of the cover plate 3 as a support layer to enhance structural stability;

[0039] Hot-air welded TPO waterproof membrane (1.5mm thick) is used to cover the elastic filler 4 and overlap it to the edge of the cover plate 3 by ≥150mm. The overlap seam is hot-air welded to form a continuous seal. Two layers of hot-air welded TPO waterproof membrane are laid (a special waterproof sealant is applied to the edge sealing position of the membrane, and stainless steel pressure strips are added for fixation where necessary to improve peel resistance and durability), thereby forming the first waterproof layer 5 and the second waterproof layer 6, which increases the sealing effect.

[0040] A concrete base layer 2 is covered on the first waterproof layer 5 and the second waterproof layer 6, and an adhesive layer 9 is used to fill the joints with waterproof sealant, forming a complete and closed waterproof system.

[0041] Example 3

[0042] like Figure 1 and Figure 2 As shown, this is a method for waterproofing expansion joints in the renovation of existing building roofs:

[0043] The original metal cover plate, aged waterstop and drainage ditch system were completely removed, and the concrete base layer was retained;

[0044] The concrete surface is locally ground and leveled, and cracks are repaired if necessary to ensure a smooth and stable construction interface;

[0045] At the top of the expansion joint, another cover plate 3 with a bending deformation zone 31 in the middle is installed by φ8 stainless steel plastic expansion anchor bolts. The width covers both sides of the expansion joint by ≥100mm and is continuously arranged along the joint axis.

[0046] An elastic filler 4 is installed in the bending deformation zone 31 in the middle of the cover plate 3 as a support layer to enhance structural stability;

[0047] Hot-air welded TPO waterproof membrane (1.5mm thick) is used to cover the elastic filler 4 and overlap it to the edge of the cover plate 3 by ≥150mm. The overlap seam is hot-air welded to form a continuous seal. Two layers of hot-air welded TPO waterproof membrane are laid (a special waterproof sealant is applied to the edge sealing position of the membrane, and stainless steel pressure strips are added for fixation where necessary to improve peel resistance and durability), thereby forming the first waterproof layer 5 and the second waterproof layer 6, which increases the sealing effect.

[0048] An interface agent is pre-applied to the first waterproof layer 5 and the second waterproof layer 6. Decorative panels (floor tiles or metal roof panels) are laid on top of the first waterproof layer 5 and the second waterproof layer 6. The joints are filled with waterproof sealant injection layer 9 to form a complete and closed waterproof system, achieving a balance between functionality and aesthetics.

[0049] In Examples 1-3, an aluminum alloy water collection trough can be installed below the expansion joint via a bracket to handle minor water seepage.

[0050] In summary, by moving the cover plate 3 from its traditional top placement to the concrete base layer and installing a cover plate 3 with a bending deformation zone 31, a self-adaptive structural covering layer is formed. Simultaneously, an elastic filler 4 with a rigid support structure is added to the first waterproof layer 5 and the second waterproof layer 6 to effectively support them, preventing sagging, deformation, or cracking due to gravity. The first and second waterproof layers 5 and 6, made of TPO waterproof membrane, fully cover the cover plate 3 and are laid on the base layer 2, with expansion allowance reserved at the joints to accommodate structural displacement. This invention simplifies the structural layers and construction process by eliminating the traditional metal drainage ditch and riser system, significantly improving the overall stability and economy of the waterproof system.

[0051] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A roof expansion joint waterproofing structure, placed on the base layer (2) of the roof (1), characterized in that, include: Cover plate (3), the cover plate (3) is provided at the top and bottom of the expansion joint, the middle part of the cover plate (3) is provided with a bending deformation zone (31), and the cover plate (3) is fixed to the base layer (2) by anchor bolts; An elastic filler (4) is placed in the bending deformation zone (31) in the middle of the top cover plate (3); Fireproof rock wool (7) is filled inside the expansion joint, and the expansion joint is also filled with flexible waterproof material (8). The top of the cover plate (3) is sequentially covered with a first waterproof layer (5) and a second waterproof layer (6), and the first waterproof layer (5) and the second waterproof layer (6) are located in the bottom structural layer of the base layer (2).

2. The roof expansion joint waterproofing structure according to claim 1, characterized in that, The anchor bolts are φ8 stainless steel plastic expansion bolts with a spacing of ≤300mm.

3. The roof expansion joint waterproofing structure according to claim 1, characterized in that, The joints of the base layer (2) are filled with an adhesive layer (9).

4. The roof expansion joint waterproofing structure according to claim 1, characterized in that, The flexible waterproof material (8) is foamed polyethylene.

5. The roof expansion joint waterproofing structure according to claim 1, characterized in that, The first waterproof layer (5) and the second waterproof layer (6) are hot-air welded TPO waterproof membranes.

6. The roof expansion joint waterproofing structure according to claim 1, characterized in that, The base layer (2) is either a concrete layer or a decorative panel.

7. The roof expansion joint waterproofing structure according to claim 1, characterized in that, The elastic filler (4) is a foamed polyethylene round rod.

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