Quick-draining heat-insulating reticulated shell roof structure and construction method thereof

Abstract

The application relates to the technical field of roof structure, in particular to a quick-draining heat-insulating reticulated shell roof structure and a construction method thereof, which comprises a steel structure body, a roof system and a drainage system; the steel structure body comprises coconut-shaped steel structure columns, an arched truss and an arc-shaped reticulated shell piece; the roof system comprises a rafter structure, a double-layer board and a liquid waterproof system; the rafter structure is installed on the arc-shaped reticulated shell piece; the double-layer board comprises an upper layer structure and a lower layer structure, and an air layer is arranged between the upper layer structure and the lower layer structure; the liquid waterproof system is paved on the top of the upper layer structure; the drainage system comprises a drainage ditch and a drainage pipeline. By adopting the metal roof quick-draining silent heat-insulating double-layer board, the application has the characteristics of efficient drainage, silent noise reduction, excellent heat-insulating performance, durability and protection, simple installation, safety, environmental protection and sustainability, and the like, and provides a more high-quality roof solution for the building industry.

Description

Technical Field

[0001] This invention belongs to the field of roof structure technology, specifically relating to a rapid drainage and heat insulation reticulated roof structure and its construction method. Background Technology

[0002] With the rapid development of urban construction in my country, large-span metal roofs are widely used in high-speed railway stations, airport terminals, and other large-scale buildings. However, due to my country's vast territory and significant regional climate differences, coupled with variations in the design, construction, and material selection of metal roofs for large public buildings across different regions, and inadequate drainage, sound insulation, and heat insulation functions, some metal roofs experience leaks during heavy rain, affecting not only normal use but also causing negative social impacts. Currently, few large-span double-layer metal roof panels can integrate functions such as rapid drainage and sound insulation. Summary of the Invention

[0003] To address the problems in the prior art, this invention proposes a rapid drainage and heat insulation mesh roof structure and its construction method, solving the problems of drainage, sound insulation, and heat insulation for large-span, large-space metal roofs.

[0004] In a first aspect, the present invention proposes a rapid drainage and heat insulation reticulated roof structure, comprising: a steel structure main body, a roof system and a drainage system;

[0005] The main steel structure includes coconut tree-shaped steel columns, arched trusses, and arc-shaped mesh panels; multiple coconut tree-shaped steel columns are arrayed on the ground; each coconut tree-shaped steel column is connected to its adjacent multiple coconut tree-shaped steel columns by longitudinally and laterally distributed arched trusses; the longitudinally and laterally distributed arched trusses enclose multiple roof mounting windows; each roof mounting window is covered by one arc-shaped mesh panel;

[0006] The roofing system includes a purlin structure, double-layer panels, and a liquid waterproofing system; the purlin structure is installed on the arc-shaped mesh shell; the double-layer panels include an upper structure and a lower structure, the upper structure is laid on top of the purlin structure, the lower structure is installed at the bottom of the purlin structure, and an air layer is provided between the upper structure and the lower structure; the liquid waterproofing system is laid on top of the upper structure.

[0007] The drainage system includes a drainage ditch and a drainage pipe; the drainage ditch is installed above the arched truss and is connected to the roof purlin structure, with the bottom of the drainage ditch lower than the roof purlin structure; the top of the drainage pipe is connected to the drainage ditch; and the liquid waterproofing system is also installed inside the drainage ditch.

[0008] Furthermore, the drainage ditch includes longitudinally and laterally distributed diversion ditches and peripheral ditches distributed at the edge of the roof system; the ends of the longitudinally and laterally distributed diversion ditches are connected to the lower peripheral ditches; the drainage pipe is connected to the peripheral ditches.

[0009] Furthermore, the coconut tree-shaped steel structure column includes a lattice column and a flowering column head assembled on the top of the lattice column; the flowering column head is connected to the arched truss; and the drainage pipe is installed inside the lattice column.

[0010] Furthermore, the roofing system includes multiple roofing units; each of the arc-shaped mesh shells is equipped with one of the roofing units, and each of the roofing units is composed of multiple double-layered panels spliced ​​together to form an arched shell structure.

[0011] Furthermore, the roof system also includes a skylight; the roof unit has a perforated section, and the skylight is located in the perforated section.

[0012] Furthermore, the lower structure of the double-layer board includes a lower rock wool board and a lower profiled steel sheet laid on top of the lower rock wool board; the upper structure of the double-layer board includes an upper profiled steel sheet, a lower cement fiber board, a vapor barrier film, an upper rock wool board, and an upper cement fiber board laid sequentially from bottom to top.

[0013] Furthermore, the purlin structure includes purlin connectors, purlin brackets, and purlin strips; the purlin connectors are connected to the arc-shaped mesh shell; the purlin brackets are connected to the connectors, and the purlin strips are connected to the purlin brackets; the purlin brackets and the purlin strips are supported and connected between the upper structure and the lower structure.

[0014] Furthermore, the drainage ditch includes a drainage ditch keel and a drainage ditch board; the two sides of the drainage ditch keel are connected to the roof purlin structure, and the bottom of the drainage ditch keel maintains a distance from the arched truss; the drainage ditch board is laid on the inner side and bottom of the drainage ditch keel; the liquid waterproofing system is laid on the surface of the drainage ditch board.

[0015] Furthermore, the liquid waterproofing system includes, from bottom to top, a polyurethane waterproofing primer, a glass fiber reinforcement layer, a waterproofing topcoat, and an anti-ultraviolet coating.

[0016] Secondly, the present invention also proposes a construction method for the above-mentioned rapid drainage and heat insulation reticulated roof structure, comprising the following steps:

[0017] Construction of the main steel structure: Multiple coconut tree-shaped steel structure columns are arrayed and installed at the target location on the ground. Each coconut tree-shaped steel structure column is connected to its adjacent multiple coconut tree-shaped steel structure columns using arched trusses, so that the multiple arched trusses distributed longitudinally and laterally enclose multiple roof installation windows; arc-shaped mesh shells are hoisted to the roof installation windows and connected to the arched trusses;

[0018] Roofing system construction: Install the purlin structure on the arc-shaped mesh shell; lay the upper layer of the double-layer board on top of the purlin structure, and install the lower layer of the double-layer board at the bottom of the purlin structure, maintaining a gap between the upper and lower layers to form an air layer; lay the liquid waterproofing system on top of the upper structure;

[0019] Construction drainage system: The drainage ditch is installed above the arched truss, connecting the drainage ditch and the roof purlin structure, with the bottom of the drainage ditch lower than the roof purlin structure; the drainage pipe is installed, with the top of the drainage pipe connected to the drainage ditch; the liquid waterproofing system is laid inside the drainage ditch.

[0020] The beneficial effects of this invention are:

[0021] By setting an air layer between the upper and lower structures of the double-layer roofing system, heat can be effectively reduced from entering the room through conduction and convection, thus improving sound insulation, especially in noisy environments such as airport stations.

[0022] By using a low-thermal-conductivity polyurethane waterproof primer in the base layer of the liquid waterproofing system, combined with an anti-UV coating, the heat load of solar radiation on the roof can be reduced, effectively solving the problem of poor thermal insulation and sound insulation of single-layer metal roofs.

[0023] The roof system adopts an integrated structure of multiple roof units with an arched shell structure, combined with crisscrossing drainage ditches, which allows rainwater to flow quickly along the curved surface of the roof. The drainage is accelerated by gravity, which prevents rainwater from accumulating on the roof and effectively prevents the formation of pools.

[0024] The crisscrossing drainage system concentrates rainwater from various areas of the roof to the outermost edge, reducing scattered drainage and ensuring all rainwater is effectively discharged. The inclined design of the drainage system accelerates water flow, more effectively handling heavy rainfall and reducing water retention time on the roof. The combination of the arched roof and drainage system enhances roof drainage efficiency, reduces maintenance costs, and extends the building's lifespan and comfort. Furthermore, the drainage pipes are concealed within the lattice columns of the coconut tree-shaped steel structure, achieving a flawless aesthetic and ensuring the building's visual appeal, making it particularly suitable for complex three-dimensional curved roofs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the drainage structure of the rapid drainage and heat insulation mesh roof structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the steel structure of the rapid drainage and heat insulation mesh roof structure of the present invention.

[0027] Figure 3 This is a partial schematic diagram of the rapid drainage and heat insulation mesh roof structure of the present invention.

[0028] Figure 4 for Figure 1 A partially enlarged structural diagram.

[0029] Figure 5 This is a schematic diagram of the structure of the rapid drainage and heat insulation grid roof structure of the present invention, in which the drainage pipe is installed inside the lattice column.

[0030] Figure 6 This is a schematic diagram of an arc-shaped mesh shell sheet and its surrounding arched truss and coconut tree-shaped steel structural columns, which are part of the rapid drainage and heat insulation mesh shell roof structure of the present invention.

[0031] Figure 7 This is a schematic diagram of the drainage ditch frame of the present invention.

[0032] Figure 8 This is a partial structural schematic diagram of the drainage ditch and roof system of the present invention.

[0033] Figure 9 This is a partial structural schematic diagram of the roofing system of the present invention.

[0034] Figure 10 This is a schematic diagram of a double-layered panel installed on a roof purlin structure according to the present invention.

[0035] Figure 11 This is a partial cross-sectional schematic diagram of the double-layer plate of the present invention.

[0036] Figure 12 This is a structural schematic diagram of a purlin connector node in the purlin structure of the present invention.

[0037] Figure 13 This is a schematic diagram of the purlin support structure of the roof purlin structure of the present invention.

[0038] Figure 14 This is a schematic diagram of the liquid waterproofing system of the present invention.

[0039] In the picture:

[0040] 10-Steel structure main body; 11-Coconut tree-shaped steel structure column; 12-Arch truss; 13-Arc-shaped grid shell; 14-Steel column edging;

[0041] 20-Roofing system; 21-Roofing unit; 22-U-bolt; 23-Purple bracket; 24-Purple strip; 25-Lower layer rock wool board; 26-Lower layer profiled steel sheet; 27-Upper layer profiled steel sheet; 28-Lower layer cement fiber board; 29-Vapor barrier membrane; 210-Upper layer rock wool board; 211-Upper layer cement fiber board; 212-Skylight;

[0042] 30 - Liquid waterproofing system; 31 - Polyurethane waterproofing primer; 32 - Fiberglass reinforcement layer; 33 - Waterproof topcoat; 34 - UV resistant coating;

[0043] 41-Drainage ditch; 42-Outer ditch; 43-Drainage pipe; 44-Main keel of drainage ditch; 45-Secondary keel of drainage ditch; 46-Drainage ditch connector; 47-Aluminum strip for drainage ditch termination;

[0044] 50 - Eaves. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] like Figure 1 , Figure 2 As shown, the rapid drainage and heat insulation mesh roof structure of the present invention includes: a steel structure body 10, a roof system 20, and a drainage system.

[0047] The main steel structure 10 includes coconut tree-shaped steel structural columns 11, arched trusses 12, and arc-shaped mesh shells 13; the roofing system 20 includes a purlin structure, double-layer slabs, a liquid waterproofing system 30, and skylights 212; the drainage system includes drainage ditches and drainage pipes 43.

[0048] Multiple coconut tree-shaped steel structural columns 11 are arrayed on the ground; each coconut tree-shaped steel structural column 11 is connected to its adjacent multiple coconut tree-shaped steel structural columns 11 by longitudinally and laterally distributed arched trusses 12; such as Figure 6 As shown, every four arched trusses 12, distributed longitudinally and laterally, enclose a roof mounting window; each roof mounting window is covered by an arc-shaped mesh shell 13. Figure 5 , Figure 6 As shown, the coconut tree-shaped steel structure column 11 includes a lattice column and a flowering column head assembled on the top of the lattice column; the flowering column head is connected to the arched truss 12; the lattice column is also covered with a steel column edging 14 to enhance the interior aesthetics of the coconut tree-shaped steel structure column 11.

[0049] The roofing system 20 includes multiple roofing units 21; each arched mesh shell 13 is topped with a roofing unit 21, and each roofing unit 21 is composed of multiple double-layered panels spliced ​​together to form an arched shell structure. For example... Figure 3 The diagram shows a complete roof unit 21. Each of the four corners of the roof unit 21 has a triangular perforation, and skylights 212 are located in the perforations to ensure indoor lighting. The four sides of the roof unit 21 are provided with longitudinally and transversely distributed drainage ditches. Arched trusses 12 are provided below the drainage ditches, and each roof unit 21 has an arc-shaped mesh shell 13 below it.

[0050] like Figure 7 , Figure 8 As shown, a drainage ditch is installed above the arched truss 12, connecting to the roof purlin structure, with its bottom lower than the purlin structure; the top of the drainage pipe 43 communicates with the drainage ditch. The drainage ditch includes longitudinally and laterally distributed drainage channels 41 and peripheral channels 42 distributed along the edges of the roof system 20; the ends of the longitudinally and laterally distributed drainage channels 41 communicate with the lower-level peripheral channels 42; multiple drainage pipes 43 are sequentially arranged along the direction of the peripheral channels 42, and all communicate with the peripheral channels 42. The drainage pipes 43 are located within the lattice columns, and the peripheral channels 42 are located above the outermost ring of arched trusses 12. Figure 1 As shown, the reticulated roof structure also includes eaves, which are set outside the outermost arched truss 12. The height of the eaves is higher than that of the outer ditch 42, and the eaves also have a curved surface that slopes towards the outer ditch 42 to guide rainwater to flow towards the outer ditch 42. Figure 1 In the diagram, the dashed arrow indicates the direction of the roof slope, and the solid arrow indicates the direction of drainage. From Figure 1 , Figure 4 As can be seen, rainwater flows along the roof slope into the longitudinally and transversely distributed drainage ditches 41, then converges into the outer drainage ditch 42, and finally flows into the drainage pipe 43 connected to the outer drainage ditch 42. The drainage pipe 43 can be connected to the municipal rainwater pipe network. Through the design of the longitudinally and transversely arranged drainage ditches, roof slope, and drainage pipe 43, rapid drainage of the roof is achieved with only 28 drainage pipes 43 (each designed to drain 223L / S), avoiding water accumulation problems and significantly reducing the number of subsequent maintenance operations.

[0051] like Figure 7 , Figure 8As shown, the drainage ditch includes drainage ditch joists, drainage ditch boards, and drainage ditch finishing aluminum strips 47. The drainage ditch joists are connected to the roof purlin structure on both sides, and the bottom of the drainage ditch joists maintains a distance from the arched truss 12 to ensure heat and sound insulation. The drainage ditch joists include multiple main drainage ditch joists 44 spaced along the length of the drainage ditch, and secondary drainage ditch joists 45 connected to both sides of the main drainage ditch joists 44. The main drainage ditch joists 44 and secondary drainage ditch joists 45 are connected to the roof purlin structure via drainage ditch connectors 46. The drainage ditch boards are laid on the inner side and bottom of the drainage ditch joists; the liquid waterproofing system 30 is laid on the surface of the drainage ditch boards.

[0052] like Figure 9 , Figure 10 , Figure 11 As shown, the purlin structure is installed on the curved mesh shell 13; the double-layer panel includes an upper structure and a lower structure. The upper structure is laid on top of the purlin structure, and the lower structure is installed at the bottom of the purlin structure. An air layer is provided between the upper and lower structures. The lower structure includes a lower rock wool board 25 and a lower profiled steel sheet 26 laid on top of the lower rock wool board 25; the upper structure includes, from bottom to top, an upper profiled steel sheet 27, a lower cement fiber board 28, a vapor barrier membrane 29, an upper rock wool board 210, and an upper cement fiber board 211.

[0053] like Figure 12 , Figure 13 As shown, the purlin structure includes purlin connectors, purlin brackets 23, and purlin strips 24. The purlin connectors are connected to the arc-shaped mesh shell 13; the purlin brackets 23 are connected to the connectors, and the purlin strips 24 are connected to the purlin brackets 23; the purlin brackets 23 and purlin strips 24 support and connect the upper and lower structures. U-bolts 22 can be used for the purlin connectors. The arc-shaped mesh shell 13 is assembled from multiple pieces of circular tube mesh shells. U-bolts 22 tighten the circular tubes connecting the arc-shaped mesh shell 13.

[0054] The liquid waterproofing system 30 is installed on the top of the upper structure; the liquid waterproofing system 30 is also installed in the drainage ditches. For example... Figure 14 As shown, the liquid waterproofing system 30 includes a polyurethane waterproofing primer 31, a glass fiber reinforcement layer 32, a waterproofing topcoat 33, and an anti-ultraviolet coating 34 arranged sequentially from bottom to top.

[0055] The mesh roof structure of the present invention determines the curved profile and elevation of each roof unit 21 based on the top surface profile of the roof system 20, thereby determining the number of double-layer panels in each roof unit 21, as well as the size, installation position and elevation of each double-layer panel. Correspondingly, the curved profile and elevation of the arc-shaped mesh shell 13 can also be determined. During installation, the height of the purlin support 23 and purlin strip 24 on the arc-shaped mesh shell 13 is controlled by the purlin connector, thereby controlling the installation accuracy of the double-layer panels.

[0056] Based on the same inventive concept, this invention also proposes a construction method for the above-mentioned rapid drainage and heat insulation reticulated roof structure, comprising the following steps:

[0057] Construction of the main steel structure 10: Multiple coconut tree-shaped steel structural columns 11 are arrayed and installed at the target positions on the ground. The lattice columns and flowering column heads of the coconut tree-shaped steel structural columns 11 are assembled on the ground. Before assembly, the target position of each coconut tree-shaped steel structural column 11 is determined. During this process, the arched trusses 12 can be assembled simultaneously. Each coconut tree-shaped steel structural column 11 is connected to its multiple adjacent coconut tree-shaped steel structural columns 11 using the assembled arched trusses 12. Four arched trusses 12 are connected to each coconut tree-shaped steel structural column 11. The four arched trusses 12, distributed longitudinally and laterally, enclose multiple roof installation windows, with the four coconut tree-shaped steel structural columns 11 located at the four corners of each roof installation window. The arc-shaped mesh shell 13 is hoisted to the roof installation window and connected to the arched trusses 12. The multiple mesh shells of the arc-shaped mesh shell 13 are hoisted piece by piece.

[0058] Construction of the roofing system 20 and drainage system: Install the purlin structure on the arched mesh shell 13; lay the upper layer of the double-layer slab structure on top of the purlin structure, and install the lower layer of the double-layer slab structure at the bottom of the purlin structure, maintaining a gap between the upper and lower layers to form an air layer; lay the liquid waterproofing system 30 on top of the upper structure; install the drainage ditch above the arched truss 12, connecting the drainage ditch and the purlin structure, and ensuring that the bottom of the drainage ditch is lower than the purlin structure; install the drainage pipe 43, connecting the top of the drainage pipe 43 to the drainage ditch; lay the liquid waterproofing system 30 inside the drainage ditch.

[0059] Specifically, it includes:

[0060] Installing U-bolts 22: When installing U-bolts 22, determine the installation position and spacing of U-bolts 22. Determine reasonable installation points according to the design specifications and roof panel specifications. Fix U-bolts 22 to the supporting structure at its bottom, which is the arc-shaped mesh shell 13.

[0061] Install purlin bracket 23: Determine the installation position of purlin bracket 23 according to the design drawings, ensuring that the contact surfaces of purlin bracket 23 with purlin 24 and double-layer board are flat and the installation position is accurate. Purlin bracket 23 should meet the requirements of roof drainage slope during installation; verify and check the installation angle and elevation of purlin bracket 23.

[0062] Install purlin 24: Place purlin 24 on purlin bracket 23, adjust to the designed position, and use bolts to fix purlin 24 to purlin bracket 23, ensuring that each connection point is evenly tightened. During the fixing process, ensure the verticality and straightness of purlin 24, and use a level or plumb line to adjust if necessary; the installation direction is parallel to the truss roof drainage direction.

[0063] Drainage Ditch Installation: Assemble the drainage joists and drainage slabs in advance. The roof units 21 of the roof system 20 maintain a spacing above the arched truss 12, leaving space for the drainage ditch installation. Hoist the assembled drainage ditch to the reserved space and secure it to the roof purlins on both sides with screws or rivets. During fixing, care should be taken not to damage the coating of the liquid waterproofing system 30 on the surface of the drainage ditch, and the connection of the drainage ditch should be secure. The drainage ditch is set with a width of 1704mm.

[0064] The double-layer structure consists of a lower rock wool board 25 and a lower profiled steel sheet 26 laid on top of the lower rock wool board; the upper structure includes an upper profiled steel sheet 27, a lower cement fiber board 28, a vapor barrier membrane 29, an upper rock wool board 210, and an upper cement fiber board 211 laid sequentially from bottom to top.

[0065] The lower layer rock wool board 25 is fixed to the lower layer profiled steel sheet 26 using self-tapping screws. Installation starts from the lower end of the roof and proceeds upwards to ensure continuity and proper overlap of the panels. It is connected to the purlin structure using self-tapping screws, which should pass through the lower layer profiled steel sheet 26 and be fixed to the purlins 24. The spacing of the self-tapping screws is equal to the width of the lower layer profiled steel sheet 26 laterally and the spacing of the purlins 24 longitudinally. Sealant or waterproof tape should be used at the overlap joints and around the screw holes to ensure sealing and prevent moisture infiltration. Waterproofing treatment should be applied to the edges and ends of the lower layer profiled steel sheet 26 to ensure the overall waterproof performance of the roof. The installation method for the upper layer profiled steel sheet 27 is the same as that for the lower layer profiled steel sheet 26. The lower layer cement fiberboard 28 is fixed to the upper layer profiled steel sheet 27 below it using self-tapping screws. After installation, the flatness, fixing firmness, and joint sealing of the panels should be checked to ensure there is no loosening or cracking. The vapor barrier membrane 29 should be laid flat on the surface of the lower cement fiberboard 28, without wrinkles or bubbles. The membrane should cover the entire roof to ensure a complete seal. The upper rock wool board 210 is installed in the same way as the lower rock wool board 25. The upper cement fiberboard 211 is installed in the same way as the lower cement fiberboard 28. The waterproof substrate of the liquid waterproofing system 30 is applied by roller. The waterproof substrate includes a polyurethane waterproof primer 31, a glass fiber reinforcement layer 32, and a waterproof topcoat 33. Note that construction should not be carried out in rainy weather, as rainfall will damage the appearance of the substrate before curing. After the waterproof substrate has cured, an anti-UV coating 34 is applied by roller to complete the seamless, defect-free liquid waterproofing system 30.

[0066] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A quick-draining and heat-insulating reticulated shell roof structure, characterized in that, include: Steel structure main body, roofing system and drainage system; The main steel structure includes coconut tree-shaped steel columns, arched trusses, and arc-shaped mesh panels; multiple coconut tree-shaped steel columns are arrayed on the ground; each coconut tree-shaped steel column is connected to its adjacent multiple coconut tree-shaped steel columns by longitudinally and laterally distributed arched trusses; the longitudinally and laterally distributed arched trusses enclose multiple roof mounting windows; each roof mounting window is covered by one arc-shaped mesh panel; The roofing system includes a purlin structure, double-layer panels, and a liquid waterproofing system; the purlin structure is installed on the arc-shaped mesh shell; the double-layer panels include an upper structure and a lower structure, the upper structure is laid on top of the purlin structure, the lower structure is installed at the bottom of the purlin structure, and an air layer is provided between the upper structure and the lower structure; the liquid waterproofing system is laid on top of the upper structure. The drainage system includes a drainage ditch and a drainage pipe; the drainage ditch is installed above the arched truss and is connected to the roof purlin structure, with the bottom of the drainage ditch lower than the roof purlin structure; the top of the drainage pipe is connected to the drainage ditch; and the liquid waterproofing system is also installed inside the drainage ditch.

2. The rapid-draining insulated reticulated shell roof structure according to claim 1, wherein, The drainage ditch includes longitudinally and laterally distributed diversion ditches and peripheral ditches distributed at the edge of the roof system; the ends of the longitudinally and laterally distributed diversion ditches are connected to the lower peripheral ditches; the drainage pipe is connected to the peripheral ditches.

3. The rapid-draining insulated reticulated shell roof structure according to claim 1, wherein, The coconut tree-shaped steel structure column includes a lattice column and a flowering column head assembled on the top of the lattice column; the flowering column head is connected to the arched truss; the drainage pipe is installed inside the lattice column.

4. The rapid drainage and heat insulation mesh roof structure according to claim 1, characterized in that, The roofing system includes multiple roofing units; each of the arc-shaped mesh shells is equipped with one of the roofing units, and each of the roofing units is composed of multiple double-layered panels spliced ​​together to form an arched shell structure.

5. The rapid-draining insulated latticed roof structure according to claim 4, wherein, The roof system also includes a skylight; the roof unit has a perforated section, and the skylight is located in the perforated section.

6. The rapid-draining insulated reticulated shell roof structure according to any one of claims 1-5, wherein, The lower structure of the double-layer board includes a lower rock wool board and a lower profiled steel sheet laid on top of the lower rock wool board; the upper structure of the double-layer board includes, from bottom to top, an upper profiled steel sheet, a lower cement fiber board, a vapor barrier film, an upper rock wool board, and an upper cement fiber board.

7. The rapid-draining insulated latticed roof structure according to claim 6, wherein, The purlin structure includes purlin connectors, purlin brackets, and purlin strips; the purlin connectors are connected to the arc-shaped mesh shell; the purlin brackets are connected to the purlin connectors, and the purlin strips are connected to the purlin brackets; the purlin brackets and the purlin strips are supported and connected between the upper structure and the lower structure.

8. The rapid-draining insulated latticed roof structure according to claim 6, wherein, The drainage ditch includes a drainage ditch frame and a drainage ditch board; the two sides of the drainage ditch frame are connected to the roof purlin structure, and the bottom of the drainage ditch frame is spaced from the arched truss; the drainage ditch board is laid on the inner side and bottom of the drainage ditch frame; the liquid waterproofing system is laid on the surface of the drainage ditch board.

9. The rapid-draining insulated latticed roof structure according to claim 6, wherein, The liquid waterproofing system comprises, from bottom to top, a polyurethane waterproofing primer, a fiberglass reinforcement layer, a waterproofing topcoat, and an anti-UV coating.

10. A construction method for a rapid drainage and heat insulation reticulated roof structure as described in claim 1, characterized in that, Includes the following steps: Construction of the main steel structure: Multiple coconut tree-shaped steel structure columns are arrayed and installed at the target location on the ground. Each coconut tree-shaped steel structure column is connected to its adjacent multiple coconut tree-shaped steel structure columns using arched trusses, so that the multiple arched trusses distributed longitudinally and laterally enclose multiple roof installation windows; arc-shaped mesh shells are hoisted to the roof installation windows and connected to the arched trusses; Roofing system construction: Install the purlin structure on the arc-shaped mesh shell; lay the upper layer of the double-layer board on top of the purlin structure, and install the lower layer of the double-layer board at the bottom of the purlin structure, maintaining a gap between the upper and lower layers to form an air layer; lay the liquid waterproofing system on top of the upper structure; Construction drainage system: The drainage ditch is installed above the arched truss, connecting the drainage ditch and the roof purlin structure, with the bottom of the drainage ditch lower than the roof purlin structure; the drainage pipe is installed, with the top of the drainage pipe connected to the drainage ditch; the liquid waterproofing system is laid inside the drainage ditch.

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