Metal roof structure for free-form surface roof

Abstract

The utility model provides a metal roof structure for a free-form surface roof. In the middle section heat preservation waterproof part of the metal roof structure, a plurality of first heat preservation plates and a plurality of second heat preservation plates are arranged to form a plurality of heat preservation units. Each heat preservation unit comprises two first heat preservation plates which are oppositely arranged and two second heat preservation plates which are oppositely arranged, a piece of heat preservation rock wool is laid in each heat preservation unit, and the heat preservation rock wool is mutually independent so as to be convenient to disassemble. The prefabricated heat preservation plate is combined with a traditional purline system for construction, all components are mainly fixed through anchor bolts, and installation is convenient. The thermal insulation layer is divided into the thermal insulation units formed by the small cells through the thermal insulation plates in the longitudinal form and the transverse form, the construction cost is not greatly increased, and the maintenance and updating cost can be effectively reduced. On the basis of original two-end rib clamp fixation, fixation of the middle heat preservation unit is added for each roof panel, the amplitude of the roof panel is reduced, and therefore noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a metal roof structure for a free-form roof. Background Art

[0002] With the rapid urbanization process, the infrastructure in the industrial and commercial fields has been continuously developed, which has led to the construction of a large number of public construction projects. A large number of modern building materials have been put into use, among which metal roofing buildings with long service life, light materials and beautiful appearance are increasingly widely used.

[0003] Most metal roofs use high-quality steel plates or aluminum plates as substrates, and aluminum-zinc coatings, molecular resins, etc. as protective layers on the surface, making them heat-resistant and light-resistant, so they have a long service life. Metal roofing materials are light in weight, thus saving the cost of building support structures. Even if the building is abandoned and demolished or old and renovated, the dismantled metal materials are easy to recycle. The most important thing is that metal roofs have strong plasticity, which can well present the smooth curves of special-shaped buildings, perfectly show the beauty of the building, and enhance the taste and grade of the building. It is precisely because of this unique plasticity that many large modern buildings such as industrial plants, supermarkets, stadiums, exhibition centers, warehousing and logistics centers, etc., use metal roofs.

[0004] However, metal roofs also have disadvantages in practical applications: metal roofs belong to lightweight enclosure structure systems, and each component is mechanically connected and fixed, which is sensitive to external loads. When subjected to large loads, component or connection failure is likely to occur. Since metal roofs are often used on special-shaped roofs, the entire roof is usually installed and designed as a general system to fit the shape. If there are local damage and leaks on the roof or if you want to partially modify and replace materials, you will face great difficulties. You must dismantle a large area of ​​the entire roof system, so maintenance and updating are difficult. At the detail level, metal roofs use a large number of bolts or self-tapping screws to connect and fix different components, and rainwater on the roof is easy to leak through the screw holes. During heavy rain or thunderstorms, in addition to leaks, the lightweight characteristics of the metal roof itself cause easy vibration and sound transmission, and the cavity between the structural layers will produce a lot of noise. The above problems are the focus of improving metal roofs. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a metal roof structure for a free-form roof, which can improve the metal roof on the basis of retaining the advantages of the metal roof's strong plasticity and conformity to the free-form roof, reduce the difficulty of metal roof maintenance and renewal, and optimize its waterproof structure and firmness.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a metal roof structure for a free-form roof, comprising: an upper roof panel part, a middle insulation and waterproof part and a lower main load-bearing system part; characterized in that the middle insulation and waterproof part comprises: a support, a lining purlin, a purlin, a plurality of first insulation boards, a plurality of second insulation boards, a plurality of insulation rock wool and a middle corrugated steel plate; the support is used to connect with the rib clamp of the upper roof panel part and be fixed on the lining purlin, the lining purlin is fixed on the purlin, the purlin is fixed on the middle corrugated steel plate, and the two wings of the purlin are respectively clamped in the corresponding troughs of the middle corrugated steel plate; the first insulation board extends along a first direction, The second insulation board extends along the second direction, and multiple first insulation boards and multiple second insulation boards are arranged to form multiple insulation units, each of the insulation units includes two first insulation boards arranged opposite to each other and two second insulation boards arranged opposite to each other, and each of the insulation units is laid with one insulation rock wool, and each insulation rock wool is independent of each other for easy disassembly, wherein the first direction is perpendicular to the plate width direction of the middle section corrugated steel plate, and the second direction is parallel to the plate width direction of the middle section corrugated steel plate; the first insulation board is further connected to the roof panel of the upper section roof panel part and the middle section corrugated steel plate respectively, and the second insulation board is further connected to the middle section corrugated steel plate.

[0007] In some embodiments, the first insulation board and the second insulation board are both foam concrete fireproof insulation boards.

[0008] The above technical solution is constructed by combining prefabricated insulation panels with traditional purlin systems. Anchor bolts are mainly used to fix the components, which is easy to install. The insulation layer is divided into smaller cells by using two types of insulation panels in the longitudinal and transverse directions to form insulation units, which will not significantly increase the project cost but can effectively reduce the maintenance and renewal costs. On the basis of the original rib clamps at both ends, each roof panel is fixed with an intermediate insulation unit, which reduces the amplitude of the roof panel and thus reduces the noise. The size and spacing of the purlins and insulation panels can be adjusted according to the actual shape. For the roofs of small buildings with lower fire protection requirements, thinner insulation panels can be used. For special-shaped roofs, the roof can be more flexibly subdivided and disassembled by unitization, reducing the restrictions on the assembly process of the roof panel and the bending capacity of the corrugated steel sheet; correspondingly, the insulation board as a partition will also be made into a special shape, and the fine calculation of the fitting of the purlins and metal plates can maintain the high-quality waterproof performance of the system. The first insulation board and the second insulation board are both made of foam concrete fireproof insulation board. The foam concrete fireproof insulation board is a lightweight material. It partially replaces the original fully-paved insulation rock wool above the purlin. It will not bring too much burden to the roof structure load-bearing system and has good compatibility with conventional metal roofing practices. Its service life is more than 50 years, which is consistent with the long service life of metal roofs. At the same time, the foam concrete fireproof insulation board will not produce thermal bridges to destroy the original thermal insulation and can meet fire protection requirements. Therefore, the foam concrete fireproof insulation board has good compatibility with conventional metal roofing practices and can be used as a modular partition board for the roof system while maintaining the original fire protection, thermal insulation and other properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 A side partial cross-sectional view of a metal roof structure for a free-form roof provided by an embodiment of the utility model;

[0011] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0012] Figure 3 This is an exploded schematic diagram of the middle section thermal insulation and waterproof part provided by one embodiment of the utility model;

[0013] Figure 4 An exploded schematic diagram of an upper roof panel portion provided in one embodiment of the utility model;

[0014] Figure 5An exploded schematic diagram of the lower main load-bearing system provided in one embodiment of the utility model;

[0015] Figure 6 It is a side elevation section view of the existing metal roof structure;

[0016] Figure 7 This is a schematic diagram of the decomposition of the existing middle section thermal insulation and waterproofing part. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0018] Please also read Figure 1 to Figure 5 ,in, Figure 1 A side partial cross-sectional view of a metal roof structure for a free-form roof provided by an embodiment of the utility model; Figure 2 for Figure 1 A magnified schematic diagram of part A; Figure 3 This is an exploded schematic diagram of the middle section thermal insulation and waterproof part provided by one embodiment of the utility model; Figure 4 An exploded schematic diagram of an upper roof panel portion provided in one embodiment of the utility model; Figure 5 This is a schematic diagram of the exploded view of the lower main load-bearing system provided in one embodiment of the utility model.

[0019] The steel plate formed by cold-bending the coated plate or plated plate by roller pressing to form a corrugated cross-section along the plate width direction is called a corrugated steel plate, and the extension direction of the groove (trough) on the corrugated steel plate is perpendicular to the plate width direction. For the convenience of description, the direction perpendicular to the plate width direction of the corrugated steel plate is defined as the first direction D1, the direction parallel to the plate width direction of the corrugated steel plate is defined as the second direction D2, and the direction parallel to the metal roof structure assembly (the direction perpendicular to the plate surface of the corrugated steel plate) is defined as the third direction D3. Among them, the first direction D1 intersects with the second direction D2 and is parallel to the plate surface of the corrugated steel plate; the third direction D3 intersects with the first direction D1 and the second direction D2 and is perpendicular to the plate surface of the corrugated steel plate.

[0020] like Figure 1 As shown, the metal roof structure for the free-form roof described in this embodiment includes: an upper roof panel portion 10, a middle insulation and waterproof portion 20, and a lower main load-bearing system portion 30 (shown in Figure 5 middle).

[0021] The improvement of this embodiment is mainly in the middle section heat preservation and waterproof part 20. Specifically, Figure 3 As shown in FIG. 1 , the middle section heat-insulating and waterproof part 20 comprises: a support 21, a lining purlin 22, a purlin 23, a plurality of first heat-insulating boards 24, a plurality of second heat-insulating boards 25, a plurality of heat-insulating rock wool 26 and a middle section corrugated steel plate 27. The support 21 is used to be connected with the rib clip 13 (shown in FIG. 1 ) of the upper section roof panel part 10. Figure 4 The first insulation board 24 extends along the first direction D1, and the second insulation board 25 extends along the second direction D2. A plurality of the first insulation boards 24 and a plurality of the second insulation boards 25 are arranged to form a plurality of insulation units 201. Each insulation unit 201 includes two first insulation boards 24 and two second insulation boards 25 arranged opposite to each other. In addition, an insulation rock wool 26 is laid in each insulation unit 201. Each insulation rock wool 26 is independent of each other for easy disassembly. The first direction D1 is perpendicular to the width direction of the middle section corrugated steel plate 27, and the second direction D2 is parallel to the width direction of the middle section corrugated steel plate 27.

[0022] The first insulation board 24 is further connected to the roof board 14 of the upper roof board portion 10 and the middle corrugated steel board 27 respectively; the second insulation board 25 is further connected to the middle corrugated steel board 27. Thus, there is one more rigid connection between the roof board 14 at the upper end of the first insulation board 24 and the middle corrugated steel board 27 at the lower end, with one insulation unit 201 between them, which enhances the stability of the metal roof structure and reduces vibration.

[0023] like Figure 3 As shown, in this embodiment, the support 21 is an aluminum alloy support, the lining purlin 22 and the purlin 23 are both in the shape of a "X", the support 21 is fixed to the lining purlin 22 by bolts, the lining purlin 22 is fixed to the purlin 23 by bolts, the purlin 23 is fixed to the middle section corrugated steel plate 27 by bolts, and the two wings of the purlin 23 are respectively clamped in the corresponding troughs of the middle section corrugated steel plate 27.

[0024] like Figures 1-2As shown, in this embodiment, the first insulation board 24 has a first insulation component 241 and a second insulation component 242. One end of the first insulation component 241 is connected to the second insulation component 242, and the two sides of the other end are respectively welded to the angle steel 19, and the angle steel 13 is further fixed to the roof panel 14 by a first bolt 281; the second insulation component 242 is connected to the middle section corrugated steel plate 27 by a screw 29 from the bottom surface of the second insulation component 242 toward the first insulation component 241. That is, at the upper end of the first insulation board 24, the first insulation component 241 is welded to the angle steel 19; at the lower end of the first insulation board 24, the second insulation component 242 is connected to the middle section corrugated steel plate 27 by a screw 29 from bottom to top. Thus, there is one more rigid connection between the roof panel 14 at the upper end of the first insulation board 24 and the middle section corrugated steel plate 27 at the lower end, with one insulation unit 201 between them, which enhances the stability of the metal roof structure and reduces vibration. In some embodiments, the joint of the first bolt 281 connecting the angle steel 19 and the roof panel 14 is sealed with a water-expandable material; the joint of the screw 29 connecting the second insulation member 242 and the middle section corrugated steel plate 27 can also be sealed with a water-expandable material.

[0025] like Figures 1-2 As shown, in this embodiment, the second insulation component 242 of the first insulation board 24 has a first groove 2421 matching the wave crest of the middle corrugated steel plate 27 on one side facing the middle corrugated steel plate 27, and the two side edges of the first groove 2421 are respectively clamped in the corresponding wave valley of the middle corrugated steel plate 27 to ensure that the boundary of the insulation unit 201 is airtight.

[0026] like Figures 1 to 3 As shown, in this embodiment, in the first direction D1, the length of the first heat-insulating component 241 is less than the length of the second heat-insulating component 242; in the first direction D1, both ends of the second heat-insulating component 242 have protrusions (not shown), and the protrusions can be inserted between the two wings of the purlin 23 and sealed with the purlin 23 to ensure that the boundary of the heat-insulating unit 201 is airtight. In the first direction D1, the two ends of the second heat-insulating component 242 are respectively sealed with the two wings of the purlin 23 on both sides, so that the formed heat-insulating unit is fully closed. Specifically, the end of the second heat-insulating component 242 is inserted into the cavity under the "J"-shaped purlin to achieve a sealed connection to ensure that the boundary of the heat-insulating unit 201 is airtight.

[0027] like Figures 1-2As shown, in this embodiment, in the second direction D2, the width of the first heat-insulating component 241 is smaller than the width of the second heat-insulating component 242; the second heat-insulating component 242 has a second groove 2422 at one end close to the first heat-insulating component 241, and the first heat-insulating component 241 can be inserted into the second groove 2422, and the second bolt 282 is used to penetrate the second heat-insulating component 242 and the first heat-insulating component 241 along the second direction D2 for anchoring to form an inverted T-shaped structure. The joint of the second bolt 282 is sealed with a water-expandable material. The first heat-insulating component 241 is relatively thin, which can reduce the deadweight of the heat-insulating board; the second heat-insulating component 242 is relatively thick, and can adopt the same design as the "J"-shaped purlin 23 to clamp the middle section corrugated steel plate 27 to ensure that the boundary of the heat-insulating unit 201 in the second direction D1 is sealed.

[0028] That is, this embodiment designs a corresponding method of fixing the thermal insulation unit: considering that the upper roof panel needs to reduce the number of holes to ensure integrity for waterproofing, it cannot be connected to the roof panel with traditional bolts, and this embodiment uses angle steel for auxiliary welding; because the thermal insulation board at the lower end is thicker, screws are used to connect the thermal insulation board with the middle corrugated steel plate from bottom to top. In this way, each roof panel can be fixed with the middle thermal insulation unit on the basis of the original rib clamps at both ends, reducing the amplitude of the roof panel and thus reducing noise.

[0029] like Figure 3 As shown, in this embodiment, the second insulation board 25 has a sawtooth structure 251 that matches the middle section corrugated steel plate 27 on one side thereof facing the middle section corrugated steel plate 27, so that the second insulation board 25 can be snapped into the corresponding trough of the middle section corrugated steel plate 27. Specifically, in the second direction D2, the cross-sectional shape of the second insulation board 25 is the same as the cross-sectional shape of the purlin 23, and the width of the sawtooth structure 251 is consistent with the width of the purlin 23, so as to ensure that the boundary of the insulation unit 201 in the second direction D2 is airtight. That is, the lower end of the second insulation board 25 is made into a sawtooth shape in accordance with the middle section corrugated steel plate 27.

[0030] In some embodiments, the first insulation board 24 and the second insulation board 25 are both made of foam concrete fireproof insulation board. The material density of the foam concrete fireproof insulation board is 100-300 kg / m 3 Although compared with the thermal insulation rock wool 40-200kg / m 3It is heavier, but still a lightweight material. It partially replaces the original fully-covered insulation rock wool above the purlins, which will not bring too much burden to the roof structure's load-bearing system. The service life of the foam concrete fireproof insulation board is more than 50 years, which is consistent with the long service life of the metal roof. The foam concrete fireproof insulation board belongs to the silicate material, which is water-resistant and corrosion-resistant. The thermal conductivity coefficient is usually 0.06-0.10W / m·K. It is a high-quality insulation material, so it will not produce thermal bridges to destroy the original thermal insulation. The fire resistance of the foam concrete fireproof insulation board reaches A1 level, which is the same level as the insulation rock wool, so it can uniformly meet the fire protection requirements. Therefore, the foam concrete fireproof insulation board has good compatibility with conventional metal roofing practices, and can be used as a modular partition board for the roofing system while maintaining the original fire protection, thermal insulation and other properties. By arranging the first insulation board 24 and the second insulation board 25 to form an insulation unit, the original overall insulation layer is divided into multiple modules with metal connection points as boundaries, so that the roof can be divided into smaller modules for renovation and updating, while optimizing the waterproof structure and firmness of the metal roof.

[0031] Specifically, in the second direction D2, the minimum width of the first insulation board 24 is greater than or equal to 50 mm. For example, the first insulation component 241 of the first insulation board 24 is a foam concrete fireproof insulation board with a thickness of 50 mm; the second insulation component 242 is a foam concrete fireproof insulation board with a thickness of 80 mm.

[0032] Specifically, the second insulation board 25 includes double-layer boards arranged along the first direction D1, and the width of each layer of boards in the first direction D1 is greater than or equal to 25 mm. For example, the second insulation board 25 is a double-layer 25 mm thick foam concrete fireproof insulation board.

[0033] Specifically, the size of the insulation unit is 1.2m*0.8m. The insulation unit formed by smaller cells will not significantly increase the project cost but can effectively reduce the maintenance and update costs.

[0034] like Figure 4 As shown, the upper roof panel part 10 shown in this embodiment can adopt the original upper roof panel part. Specifically, the upper roof panel part 10 includes: aluminum plate 11, square tube 12, rib clamp 13, roof panel 14 and waterproof roll material 15. The upper roof panel part 10 is mainly used for decoration. The texture color of the outermost aluminum plate 11 can be freely selected according to the visual effect, and is fixed on the aluminum alloy square tube 12 arranged in a grid; the square tube 12 is fixed on the alloy roof panel 14 by the aluminum alloy rib clamp 13; a layer of TPO waterproof roll material 15 is laid between the roof panel 14 and the middle section thermal insulation and waterproof part 20.

[0035] like Figure 5As shown, the lower section main load-bearing system part 30 shown in this embodiment can adopt the original lower section main load-bearing system part. Specifically, the lower section main load-bearing system part 30 includes: a first steel pipe 31, a first connecting steel plate 32, sound-absorbing cotton 33, a lower section corrugated steel plate 34, a second steel pipe 35, a second connecting steel plate 36 and a main beam 37. The connecting steel plates 32 and 36 are relatively large in size and need to be fixed to the corresponding steel pipes 31 and 35 with bolts and welding. Two groups of crossed rectangular steel pipes and connecting steel plates and the main beam 37 form a total load-bearing system. Taking into account the need for sound insulation, a thinner layer of lower section corrugated steel plate 34 is fixed with bolts at the upper end of the second steel pipe 35 as a support surface for the sound-absorbing cotton 33.

[0036] For comparison, see also Figure 6 and Figure 7 ,in, Figure 6 It is a side elevation section view of the existing metal roof structure; Figure 7 This is a schematic diagram of the decomposition of the existing middle section thermal insulation and waterproofing. The existing metal roof structure can also be disassembled into three parts: the upper section roof panel part, the middle section thermal insulation and waterproofing part, and the lower section main load-bearing system part. Among them, the upper section roof panel part and the lower section main load-bearing system part can be referred to Figure 4 , Figure 5 shown.

[0037] like Figure 7 As shown, in the existing middle section thermal insulation and waterproof part 70, the aluminum alloy support 71 for connecting the ribs of the upper section roof panel part is bolted to the I-shaped lining purlin 72, the lining purlin 72 is bolted to the larger I-shaped purlin 73, the purlin 73 is bolted to the middle section corrugated steel plate 76, and the middle section corrugated steel plate 76 is laid with a vapor barrier layer 75 and a whole layer of thermal insulation rock wool 74.

[0038] By comparison Figure 3 and Figure 7 It can be seen that this embodiment is constructed by combining prefabricated insulation panels with traditional purlin systems, and anchor bolts are mainly used to fix the components, which is easy to install. The insulation unit formed by dividing the insulation layer into smaller cells using both longitudinal and transverse insulation panels will not significantly increase the project cost but can effectively reduce the maintenance and renewal costs. The size and spacing of the purlins and insulation panels can be adjusted according to the actual shape. Thinner insulation panels can be used for the roofs of small buildings with lower fire protection requirements. For special-shaped roofs, the roof can be more flexibly subdivided and disassembled by unitization, reducing the restrictions of the bending capacity of the roof panels and corrugated steel sheets on the assembly process; correspondingly, the insulation panels as partitions will also be made into special shapes, and the careful calculation of the fitting of the purlins and metal plates can maintain the high-quality waterproof performance of the system.

[0039] It should be noted that the above-mentioned embodiments are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same / similar parts between the embodiments can be referred to each other. In addition, the embodiments and features in the embodiments of the present utility model can be combined with each other without conflict. In addition, in the above description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present utility model.

[0040] In the description of the present utility model, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The term "plurality" means two or more. The terms "including" and "having" and their variations are intended to cover non-exclusive inclusions. The terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, unless the context clearly indicates otherwise, and it should be understood that the data used in this way can be interchanged where appropriate. 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 an indirect connection 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 this utility model can be understood according to specific circumstances.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A metal roofing structure for a free-form roof, comprising: The upper section roof panel part, the middle section thermal insulation and waterproof part and the lower section main load-bearing system part; characterized in that the middle section thermal insulation and waterproof part includes: a support, a lining purlin, a purlin, a plurality of first thermal insulation boards, a plurality of second thermal insulation boards, a plurality of thermal insulation rock wool and a middle section corrugated steel plate; The support is used to connect with the rib clip of the upper roof panel part and is fixed on the lining purlin, the lining purlin is fixed on the purlin, the purlin is fixed on the middle section corrugated steel plate, and the two wings of the purlin are respectively clamped in the corresponding troughs of the middle section corrugated steel plate; The first insulation board extends along the first direction, and the second insulation board extends along the second direction. A plurality of the first insulation boards and a plurality of the second insulation boards are arranged to form a plurality of insulation units. Each insulation unit includes two first insulation boards arranged opposite to each other and two second insulation boards arranged opposite to each other. A piece of insulation rock wool is laid in each insulation unit. Each insulation rock wool is independent of each other for easy disassembly. The first direction is perpendicular to the plate width direction of the middle section corrugated steel plate, and the second direction is parallel to the plate width direction of the middle section corrugated steel plate. The first insulation board is further connected to the roof board of the upper roof board part and the middle corrugated steel board respectively, and the second insulation board is further connected to the middle corrugated steel board.

2. The metal roof structure for a free-form roof according to claim 1, characterized in that: The first heat-insulating board comprises a first heat-insulating component and a second heat-insulating component; One end of the first thermal insulation component is connected to the second thermal insulation component, and two sides of the other end are respectively welded to angle steels, and the angle steels are further fixed to the roof panel by first bolts; The second heat-insulating component is connected to the middle section corrugated steel plate by screws from the bottom surface of the second heat-insulating component toward the first heat-insulating component.

3. The metal roof structure for a free-form roof according to claim 2, characterized in that: The joints of the first bolts are sealed with water-swelling material; the joints of the screws are sealed with water-swelling material.

4. The metal roof structure for a free-form roof according to claim 2, characterized in that: The second insulation component of the first insulation board has a first groove matching the wave crest of the middle corrugated steel plate on one side facing the middle corrugated steel plate, and both side edges of the first groove are respectively engaged in the corresponding wave troughs of the middle corrugated steel plate.

5. The metal roof structure for a free-form roof according to claim 2, characterized in that: In the first direction, the length of the first heat-insulating component is less than the length of the second heat-insulating component; In the first direction, both ends of the second heat-insulating component have protrusions, and the protrusions can be inserted between the two wings of the purlin and sealed with the purlin to ensure that the boundary of the heat-insulating unit is airtight.

6. The metal roof structure for a free-form roof according to claim 2, characterized in that: In the second direction, the width of the first heat-insulating component of the first heat-insulating board is smaller than the width of the second heat-insulating component; The second insulation component has a second groove at one end close to the first insulation component. The first insulation component can be inserted into the second groove and a second bolt is used to penetrate the second insulation component and the first insulation component along the second direction for anchoring to form an inverted T-shaped structure.

7. The metal roof structure for a free-form roof according to claim 1, characterized in that: A side of the second heat-insulating plate facing the middle-section corrugated steel plate has a serrated structure matching the middle-section corrugated steel plate.

8. The metal roof structure for a free-form roof according to claim 1, characterized in that: The support is an aluminum alloy support, the lining purlin and the purlin are both in the shape of a "X", the support is fixed to the lining purlin by bolts, the lining purlin is fixed to the purlin by bolts, and the purlin is fixed to the middle section corrugated steel plate by bolts.

9. The metal roof structure for a free-form roof according to claim 1, characterized in that: The first insulation board and the second insulation board are both foam concrete fireproof insulation boards.

10. The metal roof structure for a free-form roof according to claim 9, characterized in that: In the second direction, the minimum width of the first insulation board is greater than or equal to 50 mm; The second insulation board comprises a double-layer board arranged along the first direction, and in the first direction, the width of each layer of the board is greater than or equal to 25 mm; The size of the insulation unit is 1.2m*0.8m.

Images