A flexible roofing system

Abstract

The present invention discloses a flexible roofing system, including a flexible roofing structure base and a flexible waterproof layer, wherein the flexible roofing structure base is formed by laying out a plurality of mutually independent unit panels, each of which is provided with at least one mounting member below, and each of the unit panels is connected to a cable net of a single-layer main body through the mounting member, wherein an active gap is formed between any adjacent unit panels, and the flexible roofing structure base can adapt to the deformation of the cable net through the active gap; the flexible waterproof layer is laid on the outside of the flexible roofing structure base. The flexible roofing system provided by the present invention can not only meet the functional requirements of roof waterproofing, heat preservation, and sound insulation and noise reduction, but also does not participate in the stress of the single-layer cable net roofing structure system, and does not produce in-plane resistance to the single-layer cable net roofing structure system.

Description

Technical Field

[0001] The invention relates to the technical field of roof structures, and in particular to a flexible roof system adapting to the deformation of a single-layer cable net roof structure. Background Art

[0002] With the development of the national economy and the improvement of building structure technology, large public buildings, in addition to meeting the architectural functions, have also improved the public's aesthetic taste accordingly. Buildings with large spaces and large-span roof structures with simple and elegant interior appearance are becoming more and more common. The single-layer cable net roof structure system is increasingly used in the main roof structure system of buildings due to its simple structural form and large span. For example, the 2012 London Olympic Cycling Stadium and the Suzhou Industrial Park Swimming Pool are

[0003] For a large-span single-layer cable-net roof structure system, if the traditional monolithic concrete roofing engineering method is adopted, first, the roof self-weight is large, resulting in poor economic performance; second, under the action of external loads (such as temperature, wind load, live load, earthquake load, etc.), the roof panel components have an additional impact on the internal force of the components of the single-layer cable-net roof structure system, and there is a safety hazard of overload of the internal force of the components of the single-layer cable-net roof structure system; third, under the action of external loads, the internal force of the components of the single-layer cable-net roof structure system is an axial force, and the components produce elongation or compression in the centerline direction and the value is large, resulting in cracks in the monolithic concrete roof due to elongation or compression of the components, thereby damaging the roof functions (such as insulation, waterproofing, sound insulation and noise reduction, etc.). If the traditional corrugated metal sheet roofing engineering method is adopted, such as the vertical lock-edge metal panel roof, the latter two problems mentioned above are also not solved.

[0004] The London Olympic Velodrome roof project uses the inner layer unit plate + outer layer corrugated metal roof panel approach. Although the inner layer uses unit plates, the outer layer uses full-length corrugated metal roof panels for the overall waterproof function of the roof. Therefore, the corrugated metal roof panels in the length direction and short side direction do not effectively solve the mutual influence of the internal force and deformation of the components of the single-layer cable net roof structure system, thus affecting the function of the roof system. The Suzhou Industrial Park Swimming Pool Roof Project uses the support purlin segmentation and sliding hinge, the corrugated bottom plate is cut and left with seams, and the corrugated metal roof panels are laid on the outside. This approach also does not effectively solve the mutual influence of the internal force and deformation of the components of the single-layer cable net roof structure system, thus affecting the function of the roof system. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects described in the prior art, thereby providing a flexible roofing system, which can not only meet the functional requirements of roof waterproofing, heat preservation, sound insulation and noise reduction, but also does not participate in the stress of the single-layer cable net roof structure system, nor does it produce in-plane resistance to the single-layer cable net roof structure system.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A flexible roofing system, comprising:

[0008] The flexible roof structure base is formed by laying out a plurality of mutually independent unit panels, each of which is provided with at least one mounting member below, and each of the unit panels is connected to the cable net of the single-layer body through the mounting member, wherein a movable gap is formed between any adjacent unit panels, and the flexible roof structure base can adapt to the deformation of the cable net through the movable gap;

[0009] The flexible waterproof layer is laid on the outer side of the flexible roof structure base.

[0010] As an implementable method, the unit panels are surface structures formed by dividing the flexible roof structure base layer according to the component layout characteristics on the single-layer main body; preferably, part of the unit panels are sunken to form grooves that are compatible with the gutters, or are formed with protrusions that are compatible with the opening sashes.

[0011] As an implementable manner, the movable gap is also filled with a buffer layer, preferably thermal insulation rock wool.

[0012] As an implementable manner, the unit panel includes a support frame and a functional layer filled in the cells of the support frame, and the support frame is also provided with a plurality of purlins for supporting the functional layer.

[0013] As an practicable manner, the mounting member includes a connecting member and a support, the connecting member is fixed on the supporting frame, and the support is arranged at the free end of the connecting member to provide an installation site for connecting the cable net.

[0014] As an practicable manner, the functional layer includes a leveling layer, an upper supporting layer, a thermal insulation layer, a moisture-proof layer and a lower supporting layer which are arranged in sequence from the outside to the inside.

[0015] As an practicable manner, the leveling layer is a metal plate, preferably a leveling aluminum plate, a galvanized steel plate and a stainless steel plate.

[0016] As an practicable manner, the material of the upper supporting layer and the lower supporting layer are both one of corrugated aluminum plates, galvanized steel plates or stainless steel plates.

[0017] As an practicable manner, the material of the thermal insulation layer is thermal insulation rock wool, glass fiber wool, slag wool, foam glass or foam concrete.

[0018] As an practicable manner, the moisture-proof layer is made of polyethylene film, polypropylene film, composite polypropylene film, composite metal aluminum foil or waterproof coating.

[0019] As an practicable manner, the support frame and the purlins are made of metal, preferably aluminum, steel and stainless steel.

[0020] As an practicable manner, the waterproof layer and the flexible roof structure base layer are connected by full adhesion or mechanical fixation, and the full adhesion connection is preferred.

[0021] As an practicable manner, the waterproof layer is a polymer waterproof membrane or an asphalt waterproof membrane, preferably an EPDM waterproof membrane, polyvinyl chloride, thermoplastic polyolefin, elastomer-modified asphalt and plastomer-modified asphalt.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This application adopts the method of dividing the overall roof system into unit plate roofs and designs the roof as a flexible system, which effectively solves the problem that traditional roof engineering cannot adapt to the deformation of the single-layer cable net roof structure system, which is mainly reflected in two aspects:

[0024] 1. The flexible roof structure base of the present application will not have an additional impact on the internal force of the components of the single-layer cable net roof structure system: since the unit plates are independent of each other and do not generate interaction forces, and each unit plate is only connected to the single-layer cable net roof structure system, it becomes an auxiliary component of the single-layer cable net roof structure system, and the external load of each auxiliary component will only be transmitted to the single-layer cable net roof structure system, that is, the auxiliary component does not participate in the force of the single-layer cable net roof structure system, nor does it produce in-plane resistance to the single-layer cable net roof structure system;

[0025] 2. The flexible roof system of the present application can meet the requirements of component deformation of the single-layer cable net roof structure system: first, the unit panels as auxiliary components can meet the requirements of deformation of the single-layer cable net roof structure system; secondly, each unit panel itself still retains the insulation, sound insulation and other functions of the traditional roof; thirdly, the surface layer of the base layer of the flexible roof structure spliced ​​by each unit panel is also provided with a flexible waterproof layer. The flexible waterproof layer can not only deform with the deformation of each unit panel, avoiding cracks due to the stress deformation of the single-layer cable net roof structure system, but also ensure the basic functions of the roof such as waterproofing and insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a local structure of a flexible roof structure base in one embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the structure of a support frame provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the connection between a structural unit and a cable net provided in one embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of a flexible roof structure base layer with grooves provided by one embodiment of the present invention;

[0031] Figure 5 A schematic structural diagram of a flexible roof structure base with protrusions provided in one embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Unit panels; 11. Support frames; 12. Purlins; 13. Functional layers; 131. Leveling layers; 132. Upper support layers; 133. Insulation layers; 134. Moisture-proof layers; 135. Lower support layers; 14. Grooves; 15. Protrusions; 2. Mounting parts; 21. Connectors; 22. Supports; 3. Cable nets; 31. Clamps. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] See also Figure 1 and Figure 3 The present invention provides a flexible roofing system, a flexible roofing structure base and a flexible waterproof layer (not shown in the figure), wherein the flexible roofing structure base comprises a plurality of mutually independent unit panels 1 laid flat, each unit panel 1 is provided with at least one mounting member 2 below, each unit panel is connected to a cable net 3 of a single-layer main body 1 through the mounting member 2, wherein a movable gap is formed between any adjacent unit panels 1, the flexible roofing structure base can adapt to the deformation of the cable net through the movable gap, and the flexible waterproof layer is laid on the outside of the flexible roofing structure base.

[0039] The present application divides the overall roof system into several unit panels 1. First, it will not produce additional influence on the internal force of the components of the single-layer cable net roof structure system. Since each unit panel 1 is independent of each other and does not generate interaction force, and each unit panel 1 is only connected to the cable net 3 of the single-layer main body, it becomes an auxiliary component of the single-layer cable net roof structure system. The external load of each auxiliary component will only be transmitted to the cable net 3 of the single-layer main body, that is, the auxiliary component does not participate in the stress of the single-layer cable net roof structure system, nor does it produce in-plane resistance to the single-layer cable net roof structure system. Secondly, it can meet the deformation requirements of the components of the single-layer cable net roof structure system. The auxiliary components of the unit panel 1 can meet the deformation requirements of the single-layer cable net roof structure system, and its own thermal insulation, sound insulation and other functions still exist. In combination with the setting of the surface flexible waterproof layer, cracks will not appear due to the stress deformation of the single-layer cable net roof structure system, resulting in damage to the waterproofing, thermal insulation and other functions of the roof. In summary, the present application designs the roof as a flexible system, making the roof system an auxiliary component that adapts to the deformation requirements of the single-layer cable net roof structure system, completely and effectively solving the problem of mutual influence between the internal forces and deformations of the components between the two, so that the function of the roof system is not affected, thereby effectively solving the problem that traditional roofing projects cannot adapt to the deformation of the single-layer cable net roof structure system.

[0040] In the present application, the entire flexible roof structure base is divided into corresponding unit panels 1 according to the component layout characteristics of the single-layer cable net roof structure system. Each unit panel 1 is a surface structure. The shape of the surface structure is set according to the actual component layout characteristics and is used to cover the entire roof component. For example, refer to Figure 4 When a gutter is set on the roof, a groove 14 adapted to the gutter will be formed on the unit plate 1 at the corresponding position, please refer to FIG. Figure 5 When an opening sash is provided on the roof, a protrusion 15 matching the opening sash will be formed on the unit plate 1 at the corresponding position.

[0041] Since the single-layer cable net roof structure system is reciprocating under the action of external loads, the gap width between the roof unit panels is in a changing state of tension or compression, and there may be collisions between adjacent unit panels 1 or insufficient thermal insulation performance. Therefore, the present application also fills the movable gap between adjacent unit panels 1 with a buffer layer (not marked in the figure), and it is best to use thermal insulation rock wool for filling so that it can be deformed and completely closed at the same time.

[0042] Among them, see Figure 1 The specific structure of the unit plate 1 includes two parts, namely, a support frame 11 and a functional layer 13 arranged in the support frame 11, see Figure 2 The support frame 11 is mainly composed of purlins 12 and is used to provide a connection point for the mounting member 2. Figure 3The mounting member 2 is usually composed of a connecting member 21 and a support 22. The connecting member 21 is fixed on the supporting frame 11. The support 22 is arranged at the free end of the connecting member 21. A threaded hole can be opened on the support 22. The support 22 is fixed to the clamp 31 of the connecting cable net 3 by screws to provide an installation site for the connecting cable net 3.

[0043] See also Figure 3 The functional layer 13 includes a leveling layer 131, an upper supporting layer 132, an insulating layer 133, a moisture-proof layer 134 and a lower supporting layer 135, which are arranged in sequence from the outside to the inside. The leveling layer 131 is mainly made of metal plates, which can be made of materials such as leveling aluminum plates, galvanized steel plates and stainless steel plates; the materials of the upper supporting layer 132 and the lower supporting layer 135 can be the same or different, but both play a supporting and load-bearing role, and can be selected from any one of corrugated aluminum plates, galvanized steel plates or stainless steel plates; the insulating layer 133 can be selected from insulating rock wool, glass fiber wool, slag wool, foam glass or foam concrete; the moisture-proof layer 134 can be selected from a vapor barrier film or a waterproof coating, and the vapor barrier film can be a polyethylene film, a polypropylene film, a composite polypropylene film or a composite metal aluminum foil.

[0044] The process sequence of processing, manufacturing and installation of unit plate 1 is as follows:

[0045] First, the purlins 12, the connectors 21 and their supports 22 are processed and manufactured in the factory according to the size of the roof unit panels 1 and assembled into the support frame 11;

[0046] Secondly, the corrugated aluminum plate used as the lower support layer 135 is first fixedly connected to the lower surface of the support frame 11 in the factory, and then the vapor barrier film and thermal insulation rock wool are laid in the cells of the support frame 11 from the inside to the outside, and then the corrugated aluminum plate used as the upper support layer 132 is fixed to the upper surface of the support frame 11, and the leveling aluminum plate is laid on the outer side of the corrugated aluminum plate, and finally the factory production of the unit plate 1 is realized;

[0047] See also Figure 2 Of course, in order to better play a supporting role, multiple purlins 12 can also be set on the supporting frame 11, wherein the supporting frame 11 and the purlins 12 are made of metal, preferably aluminum, steel and stainless steel. The purlins 12 can be set parallel to one side of the supporting frame 11. When making it, the lower supporting layer 135 of the functional layer 13 is first wrapped on the outside of the purlin 12, and then the vapor barrier membrane and the thermal insulation rock wool are laid on the purlin 12 in turn, and finally the upper supporting layer 132 is fixed on the upper surface of the supporting frame 11, and then the leveling layer 131 is laid.

[0048] The installation of the flexible roofing system also includes the following steps:

[0049] Fix the connecting piece 21 of the mounting piece 2 below the supporting frame 11, preferably at the four corners of the supporting frame 11, to achieve balanced force, and then weld the support 22 below the connecting piece 21, wherein the support 22 is provided with a threaded hole for connecting the clamp 31 of the cable net 3, and each unit plate 1 is installed on the clamp 31 of the single-layer main cable net 3 according to the designed position through the threaded hole;

[0050] Next, the gaps between the roof unit panels 1 are filled with thermal insulation rock wool and completely sealed;

[0051] Finally, apply a special base adhesive on the upper surface of the roof unit panel 1, and then fully spread the waterproof layer on the entire flexible roof structure base. The special base adhesive uses a solvent-based, high-strength special adhesive with synthetic rubber as the base material. The special adhesive must meet the requirements of the current industry standard "Polymer Waterproof Membrane Adhesive". The special adhesive should maintain good compatibility and adhesion with the inner surface of the EPDM membrane waterproof cushion and the leveling aluminum plate.

[0052] The flexible waterproof layer can be a polymer waterproof membrane or an asphalt waterproof membrane, such as EPDM waterproof membrane, polyvinyl chloride, thermoplastic polyolefin, elastomer-modified asphalt or plastomer-modified asphalt. The present application prefers EPDM waterproof membrane, which is also called EPDM waterproof membrane, and has excellent properties of UV resistance, aging resistance and mildew resistance. The present application adopts non-reinforced homogeneous EPDM high-quality waterproof membrane with a smooth surface, flush edges, and no cracks, adhesion, holes, pores or scars. The irradiation time of the artificial climate accelerated aging test is not less than 2500 hours, meeting the climatic conditions of the project location and the characteristics of the project. The designed service life is not less than 25 years, and the project warranty is not less than 20 years. Its main performance indicators (such as tensile properties, low-temperature bending, heat aging, chemical resistance, climate aging performance, etc.) and quality are not lower than the requirements of the corresponding indicators of the current national standard "Polymer Waterproof Materials Part 1: Sheet Materials" GB18173.1.

[0053] Since the single-layer cable net roof structure system is subjected to reciprocating external loads, the gap width between the roof unit panels is in a changing state of tension or compression. Therefore, the EPDM membrane spanning the gap between the roof unit panels should meet the requirement of no obvious plastic deformation under repeated stretching cycles to ensure the integrity and durability of the EPDM waterproof layer when displacement occurs between the roof panels.

[0054] Of course, the connection method between the flexible waterproof layer and the flexible roof structure base is not limited to full adhesion, but can also be a mechanical fixation combined with adhesive connection.

[0055] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flexible roofing system, It is characterized in that include: The flexible roof structure base is formed by laying out a plurality of mutually independent unit panels, each of which is provided with at least one mounting member below, and each of the unit panels is connected to the cable net of the single-layer body through the mounting member, wherein a movable gap is formed between any adjacent unit panels, and the flexible roof structure base can adapt to the deformation of the cable net through the movable gap; The flexible waterproof layer is laid on the outer side of the flexible roof structure base.

2. The flexible roofing system according to claim 1, It is characterized in that The unit panels are surface structures formed by dividing the flexible roof structure base layer according to the component arrangement characteristics on the single-layer body.

3. The flexible roofing system according to claim 2, It is characterized in that Some of the unit panels are sunken to form grooves that match the gutters, or are formed with protrusions that match the opening sashes.

4. The flexible roofing system according to claim 1, It is characterized in that The active gap is also filled with a buffer layer.

5. The flexible roofing system according to claim 4, It is characterized in that The buffer layer is thermal insulation rock wool.

6. The flexible roofing system according to claim 1, It is characterized in that The unit plate comprises a supporting frame and a functional layer filled in the cells of the supporting frame. The supporting frame is also provided with a plurality of purlins for supporting the functional layer.

7. The flexible roofing system according to claim 6, It is characterized in that The supporting frame and the purlins are made of metal.

8. The flexible roofing system according to claim 7, It is characterized in that The metal material is one of aluminum, steel and stainless steel.

9. The flexible roofing system according to claim 6, It is characterized in that The mounting member comprises a connecting member and a support, wherein the connecting member is fixed on the supporting frame, and the support is arranged at the free end of the connecting member to provide a mounting position for connecting the cable net.

10. The flexible roofing system according to claim 6, It is characterized in that The functional layer comprises a leveling layer, an upper supporting layer, a heat-insulating layer, a moisture-proof layer and a lower supporting layer which are arranged in sequence from the outside to the inside.

11. The flexible roofing system according to claim 10, It is characterized in that The leveling layer is a metal plate; The material of the upper support layer and the lower support layer are one of corrugated aluminum plate, galvanized steel plate or stainless steel plate; The material of the thermal insulation layer is thermal insulation rock wool, glass fiber wool, slag wool, foam glass or foam concrete; The material of the moisture-proof layer is polyethylene film, polypropylene film, composite polypropylene film, composite metal aluminum foil or waterproof coating.

12. The flexible roofing system according to claim 11, It is characterized in that The metal plate is one of a leveling aluminum plate, a galvanized steel plate and a stainless steel plate.

13. The flexible roofing system according to claim 1, It is characterized in that The waterproof layer is connected to the flexible roof structure base layer by full adhesion or mechanical fixation.

14. The flexible roofing system according to claim 13, It is characterized in that The waterproof layer is a polymer waterproof roll material or an asphalt waterproof roll material.

15. The flexible roofing system according to claim 14, It is characterized in that The polymer waterproofing membrane is one of EPDM waterproofing membrane, polyvinyl chloride, and thermoplastic polyolefin; The asphalt waterproofing roll material is elastomer-modified asphalt or plastomer-modified asphalt.

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