Composite metal roof system and construction method thereof

Abstract

The invention discloses a composite metal roof system and a construction method thereof. The construction method comprises the following steps that firstly, a roof truss supporting structure is constructed, wherein the roof truss supporting structure is welded to the top of a main body structure; and secondly, a main purline, a secondary purline, a bottom plate layer, a sound absorption layer, a supporting layer, a vapor barrier layer, a heat preservation layer and a waterproof layer are sequentially constructed on the top of the roof truss supporting structure and located around the daylighting roof structure to be constructed, an inner connecting keel is arranged on the inner side of the heat preservation layer in the annular direction, and an outer connecting keel is arranged on the outer side of the heat preservation layer in the annular direction. And thirdly, skylight keels are constructed. And 4, constructing an inner drainage ditch, an outer drainage ditch and a radial drainage ditch. And 5, constructing a fixed glass window and an openable glass window. And 6, the waterproof layer and the facing layer are sequentially constructed until the construction is finished. The technical problems that a traditional steel truss roof structure is complex in construction process, leakage risks exist, and heat preservation and sound insulation performance is poor are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, in particular to a composite metal roofing system and a construction method thereof. Background Art

[0002] Steel truss roof structure is widely used in industrial plants, stadiums, exhibition halls, commercial buildings and other large buildings due to its fast construction speed, high material utilization rate and design flexibility, meeting the architectural needs of different functions and aesthetic requirements. The traditional steel truss roof structure layer is usually composed of the following main components: the steel truss, which is composed of several rods (such as main trusses and secondary trusses) to form a geometric three-dimensional frame, which mainly bears vertical loads and wind loads; the roof panel, as the main covering layer of the roof, carries other loads on the roof (such as equipment, insulation layer, etc.); the insulation layer improves the thermal insulation performance of the roof and reduces energy consumption; the waterproof layer prevents rainwater from penetrating and protects the internal structure; the finishing layer provides a beautiful appearance while protecting the internal structure. Although the steel truss roof structure layer has many advantages, it also has some defects and potential problems: 1. Complex construction: The installation and connection nodes require high accuracy and the construction process is complicated. 2. There is a risk of leakage: The joints between the roof panel and the waterproof layer are prone to construction defects. If the waterproof treatment is not thorough, it may cause rainwater leakage and affect the indoor environment. 3. Due to the large indoor space, improper construction of the insulation layer or heat insulation layer may lead to heat loss or heat accumulation, affecting indoor comfort and energy efficiency. 4. The roof structure is more sensitive to the transmission of external noise. In a noisy environment, the noise inside the house is loud, affecting comfort. Therefore, these defects need to be fully considered in the design and construction stages to ensure the long-term stability and safety of the steel grid roof structure. Summary of the invention

[0003] The purpose of the present invention is to provide a composite metal roof system and a construction method thereof, in order to solve the technical problems that the traditional steel truss roof structure has a complicated construction process, a risk of leakage, and poor thermal insulation and sound insulation performance.

[0004] To achieve the above purpose, the present invention adopts the following technical solution.

[0005] A composite metal roof system, comprising a roof truss support structure, a metal roof structure and a skylight structure; the roof truss support structure is installed on the top of a main structure, and the top elevation of the roof truss support structure is high in the middle and low around; the metal roof structure is ring-shaped and installed on the top of the roof truss support structure; a circle of outer drainage ditch is arranged on the outer side of the metal roof structure near the edge; the skylight structure is circular and installed on the roof truss support structure in the ring of the metal roof structure; a circle of inner drainage ditch is arranged between the inner edge of the metal roof structure and the skylight structure; radial drainage ditch is arranged on the metal roof structure along the annular interval; the radial drainage ditch connects the inner drainage ditch with the outer drainage ditch; The metal roof structure includes a main purlin, a secondary purlin, a thermal insulation layer and a waterproof layer; the main purlin has a group, which is arranged at intervals along the circumferential direction on the roof truss support structure around the skylight structure, and the main purlin is connected to the roof truss support structure through the main purlin support; the secondary purlin is arranged at intervals above the adjacent main purlins along the radial direction, and the secondary purlin is connected to the main purlin through the secondary purlin support; a bottom plate layer is laid at the bottom of the secondary purlin, and a supporting layer is laid on the top of the secondary purlin; the space between the bottom plate layer and the supporting layer is filled with a sound-absorbing layer; a vapor barrier layer is laid on the top of the supporting layer; the thermal insulation layer and the waterproof layer are laid on the vapor barrier layer in sequence; the waterproof layer adopts a double waterproof layer, and a finishing layer is arranged above the waterproof layer; an inner connecting keel is arranged on the inner side of the thermal insulation layer and along the circumferential direction; The skylight structure includes a skylight keel, a fixed glass window and an openable glass window; the skylight keel is connected to the roof truss support structure inside the metal roof structure; the skylight keel is a triangular grid structure; the fixed glass window and the openable glass window are both triangular in shape and are installed on the skylight keel at the corresponding triangular grid; The inner drainage ditch is arranged above the roof truss supporting structure, and the outer side surface of the inner drainage ditch is connected to the inner connecting keel, and the inner side surface of the inner drainage ditch is connected to the skylight structure; a waterproof sealing structure is arranged at the joint between the inner drainage ditch and the skylight structure; a flashing board is arranged above the outer side surface of the inner drainage ditch; the upper edge of the flashing board covers the top of the waterproof layer; The external drainage ditch is embedded in the metal roof structure, close to the outer edge of the metal roof structure; external connection keels are respectively arranged on the metal roof structure on both sides of the external drainage ditch; the tops of the inner and outer sides of the external drainage ditch are respectively connected to the external connection keels; The radial drainage ditch is embedded in the metal roof structure, and radial connecting keels are respectively arranged on the metal roof structure on both sides of the radial drainage ditch; the left and right sides of the radial drainage ditch are respectively connected to the radial connecting keel structure.

[0006] Preferably, the roof truss support structure includes an inner ring truss support, an outer ring truss support and a skylight support; the planar shape of the skylight support is circular, and the top surface of the skylight support is a slope that gradually slopes downward from the center to the edge; the skylight support is formed by connecting multiple trusses arranged radially; the inner ring truss support is annular, and is connected by multiple trusses; the inner ring truss support is connected to the outside of the skylight support, and the top surface of the inner ring truss support is lower than the top surface of the skylight support; the top surface of the inner ring truss support is a slope that gradually slopes downward from the inside to the outside; the outer ring truss support is annular, and is connected by multiple trusses; the outer ring truss support is connected to the outside of the inner ring truss support, and the top surface of the outer ring truss support is a slope that gradually slopes downward from the inside to the outside; the slope of the top surface of the outer ring truss support is greater than the slope of the inner ring truss support.

[0007] Preferably, the inner drainage ditch includes a first outer cover plate, a first gutter support and a first gutter plate; the radial section of the first gutter support is U-shaped, the outer side surface of the first gutter support is connected to the inner connecting keel, and the inner side surface of the first gutter support is connected to the skylight keel; the radial sections of the first gutter plates are all U-shaped and are laid in the U-shaped groove of the first gutter support; the upper edge of the outer side surface of the first gutter plate is bent outward from the groove, and the bent portion covers the top of the inner connecting keel; the flashing plate blocks the connection portion between the first gutter plate and the inner connecting keel; the upper edge of the inner side surface of the first gutter plate is connected to the skylight roof structure, and a waterproof sealing structure is arranged at the joint; the first outer cover plate is wrapped outside the U-shaped groove of the first gutter support, and the upper edge of the outer side surface of the first outer cover plate is attached to the bottom of the bottom plate layer, and the upper edge of the inner side surface of the first outer cover plate is connected to the bottom of the connecting skylight keel; the space between the first gutter plate and the first outer cover plate is filled with a first rock wool layer.

[0008] Preferably, the external drainage ditch includes a second outer covering plate, a second ditch support and a second ditch plate; the radial section of the second ditch support is U-shaped, and the inner and outer side surfaces of the second ditch support are respectively connected to the external connecting keels on both sides; the radial sections of the second ditch plates are all U-shaped, and are laid in the U-shaped groove of the second ditch support; the upper edges of the inner and outer sides of the second ditch plate are provided with folded edges, and the folded edges cover the top of the corresponding external connecting keels; the second outer covering plate is wrapped around the outside of the U-shaped groove of the second ditch support, and the inner and outer side edges of the second outer covering plate are attached to the bottom of the bottom plate layer on both sides; the space between the second ditch plate and the second outer covering plate is filled with a second rock wool layer.

[0009] Preferably, the metal roof structure is disconnected at the position of the radial gutter, and radial connecting keels are arranged on the insulation layer on both sides of the radial gutter; the radial gutter includes a third outer cover plate, a third gutter support and a third gutter plate; the circumferential section of the third gutter support is U-shaped, and the left and right side surfaces of the third gutter support are respectively connected to the radial connecting keels; the circumferential sections of the third gutter plate are all U-shaped, and are laid in the U-shaped groove of the third gutter support; the upper edges of the sides on both sides of the third gutter plate are bent outward of the groove, and the folded edges cover the top of the radial connecting keels; the third outer cover plate is wrapped around the outside of the U-shaped groove of the third gutter support; the upper edges of the sides on both sides of the third outer cover plate are provided with folded edges, and the folded edges are attached to the bottom of the base plate layer; the space between the third gutter plate and the third outer cover plate is filled with a third rock wool layer.

[0010] Preferably, the main purlin support includes a mounting plate and a first connecting plate; a pad is provided at the bottom of the mounting plate, and the pad is welded to the top of the roof truss supporting structure; a support plate is provided between the two sides of the pad and the bottom of the mounting plate; there are two first connecting plates, which are respectively provided on both sides of the top of the mounting plate, and the two first connecting plates are respectively clamped on both sides of the main purlin; the main purlin and the two first connecting plates are connected by first tension bolts.

[0011] Preferably, the secondary purlin support includes a second connecting plate; there are two second connecting plates, which are radially welded to the top of the main purlin, and the two second connecting plates are respectively clamped on both sides of the secondary purlin; the secondary purlin and the two second connecting plates are connected by second tension bolts.

[0012] Preferably, a dustproof layer is laid on the top of the bottom plate layer; the sound-absorbing layer is laid on the dustproof layer, and the sound-absorbing layer is spliced ​​by a group of sound-absorbing blocks; the sound-absorbing blocks are filled in the space surrounded by the supporting layer, the bottom plate layer and the secondary purlins.

[0013] Preferably, the thermal insulation layer comprises an annular keel, radial keels and thermal insulation board; the radial keels are arranged in a group along the annular interval, and the radial keels are connected to the supporting layer through fasteners; the annular keels are connected to the tops of adjacent radial keels; the thermal insulation board is provided with two layers, the upper thermal insulation board is connected between the annular keels, and the lower thermal insulation board is connected between the radial keels; The waterproof layer includes a lower waterproof coiled material and an upper waterproof board; the lower waterproof coiled material is laid on the top of the insulation layer; the upper waterproof board is spliced ​​by vertical lock-edge aluminum-magnesium-manganese plates, and the upper waterproof board is connected to the annular keel by a support.

[0014] A construction method of a composite metal roofing system comprises the following steps.

[0015] Step 1: Construct the roof truss support structure: weld the roof truss support structure on the top of the main structure.

[0016] Step 2: construct main purlins, secondary purlins, bottom plate layer, sound-absorbing layer, supporting layer, vapor barrier layer, thermal insulation layer and waterproof layer in sequence on the top of the roof truss supporting structure and around the skylight structure to be constructed, and arrange inner connecting keels on the inner side of the thermal insulation layer along the circumferential direction, and arrange outer connecting keels on the outer side of the thermal insulation layer along the circumferential direction.

[0017] Step three: construct the skylight keel.

[0018] Step 4: Construct inner drainage ditch, outer drainage ditch and radial drainage ditch.

[0019] Step five: construct fixed glass windows and openable glass windows.

[0020] Step six: construct the waterproof layer and the finishing layer in sequence, and the construction is completed.

[0021] Compared with the prior art, the present invention has the following characteristics and beneficial effects.

[0022] 1. The metal roof structure of the present invention is annular, and an inner drainage ditch is arranged at the inner edge of the metal roof structure, and an outer drainage ditch is arranged at the outer edge of the metal roof structure. The inner and outer drainage ditches are designed to effectively collect and discharge rainwater on the roof. The multi-layer drainage design (external drainage ditch, inner drainage ditch, radial drainage ditch) ensures that rainwater is quickly drained away, reduces the risk of water accumulation, and extends the service life of the roofing material.

[0023] 2. The reasonable layout and connection method of the main purlins and the secondary purlins in the metal roof structure of the present invention enhance the stability and bearing capacity of the overall structure and adapt to various climatic conditions. At the same time, the sound-absorbing layer, vapor barrier layer and thermal insulation layer are reasonably arranged on the metal roof structure; wherein, the arrangement of the sound-absorbing layer can effectively reduce noise and improve the quietness of the indoor environment, and is suitable for places requiring a quiet environment; the design of the thermal insulation layer and the vapor barrier layer improves the energy efficiency of the building, reduces indoor energy consumption, and improves living comfort. In addition, the design of the double waterproof layer provides higher waterproof performance, reduces the risk of leakage, and ensures the dryness and safety of the indoor space. The modular design and the use of standardized components of the present application simplify the construction process, improve construction efficiency, and also solve the technical problems of the traditional steel truss roof structure, which has a complex construction process, the risk of leakage, and poor thermal insulation and sound insulation performance.

[0024] 3. The composite metal roofing system of the present invention not only improves the functionality and comfort of the building through its excellent drainage, lighting, heat preservation, waterproofing and structural stability, but also has high energy efficiency and environmental protection performance, and has strong adaptability and competitiveness in modern building design. The roof design adopts multiple layers of thermal insulation materials, including heat insulation layer and vapor barrier layer, which effectively isolates the heat and cold from the outside and maintains the stability of indoor temperature. Especially in areas with large temperature differences, the thermal insulation performance can significantly improve the comfort and energy saving effect of the building. A double-layer waterproof design is set in the roof structure to ensure that the roof is not easy to leak during long-term use. The material of the waterproof layer usually has strong weather resistance and anti-permeability, which effectively prevents rainwater from leaking into the house, thereby protecting the building structure and internal equipment. The combination of the thermal insulation layer and the waterproof layer can effectively reduce the aging, corrosion or deformation of the roof material due to environmental factors (such as rainwater, ultraviolet rays), and extend the service life of the roof. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the plan structure of the composite metal roofing system of the present invention.

[0026] Figure 2 It is a schematic diagram of the circumferential cross-sectional structure of the composite metal roofing system of the present invention.

[0027] Figure 3 It is a schematic diagram of the radial cross-section structure of the connection between the inner drainage ditch and the metal roof structure in the present invention.

[0028] Figure 4 It is a schematic diagram of the connection structure between the support and the annular keel in the present invention.

[0029] Figure 5 It is a schematic diagram of the structure of the connection component in the present invention.

[0030] Figure 6 It is a structural schematic diagram of the main purlin support in the present invention.

[0031] Figure 7 It is a schematic diagram of the radial cross-sectional structure of the external drainage ditch of the present invention.

[0032] Figure 8 It is a schematic cross-sectional view of the structural layer of the composite metal roofing system of the present invention.

[0033] Fig. 9 It is a schematic diagram of the radial cross-section structure of the connection between the inner drainage ditch and the skylight roof structure of the present invention.

[0034] Fig.10 It is a schematic diagram of the skylight structure in the present invention.

[0035] Fig.11 It is a schematic diagram of the annular cross-sectional structure of the radial drainage ditch in the present invention.

[0036] Fig.12 It is a structural schematic diagram of the roof truss supporting structure in the present invention.

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] Figure symbols: 1-angle code, 2-main purlin, 3-secondary purlin, 4-insulation layer, 4.1-circumferential keel, 4.2-radial keel, 4.3-insulation board, 5-waterproof layer, 5.1-lower waterproof membrane, 5.2-upper waterproof board, 5.3-support, 5.3.1-support rod, 5.3.2-support plate, 6-inner drainage ditch, 6.1-first outer board, 6.2-first gutter support, 6.3-first gutter board, 6.4-first rock wool layer, 7-outer drainage ditch, 7.1-second outer board, 7.2-second gutter support, 7.3-second gutter board, 7.4-second rock wool layer, 8-main purlin support, 8.1-installation plate, 8.2-first connecting plate, 8.3-pad, 8.4-support plate, 9-secondary purlin support, 9.1-second connecting plate, 1 0 - bottom plate layer, 11 - supporting layer, 12 - sound absorbing layer, 13 - vapor barrier layer, 14 - finishing layer, 14.1 - finishing panel, 14.2 - finishing keel, 14.3 - connection assembly, 14.3.1 - I-shaped plate, 14.3.2 - L-shaped plate, 15 - inner connecting keel, 16 - outer connecting keel, 17 - first tension bolt, 18 - second tension bolt, 19 - dustproof layer, 20 - skylight keel, 21 - fixed glass window, 22 - openable glass window, 23 - radial drainage ditch, 23.1 - third outer cladding board, 23.2 - third gutter support, 23.3 - third gutter board, 23.4 - third rock wool layer, 24 - flashing board, 26 - inner ring truss support, 27 - outer ring truss support, 28 - skylight support, 29 - radial connecting keel. DETAILED DESCRIPTION

[0039] like Figure 1-11As shown, this composite metal roof system includes a roof truss support structure, a metal roof structure and a skylight structure; the roof truss support structure is installed on the top of the main structure, and the top elevation of the roof truss support structure is high in the middle and low around; the metal roof structure is ring-shaped and installed on the top of the roof truss support structure; a circle of outer drainage ditch 7 is arranged on the outer side of the metal roof structure, near the edge; the skylight structure is circular and installed on the roof truss support structure in the ring of the metal roof structure; a circle of inner drainage ditch 6 is arranged between the inner edge of the metal roof structure and the skylight structure, for collecting water falling from the finishing layer 14; radial drainage ditches 23 are arranged on the metal roof structure along the annular interval; the radial drainage ditch 23 connects the inner drainage ditch 6 with the outer drainage ditch 7, and a drainage structure is arranged at the bottom of the outer drainage ditch 7 to drain the water in the outer drainage ditch 7 to the ground; The metal roof structure includes a main purlin 2, a secondary purlin 3, an insulation layer 4 and a waterproof layer 5; the main purlin 2 has a group, which is arranged at intervals along the annular direction on the roof truss support structure around the skylight structure, and the main purlin 2 is connected to the roof truss support structure through a main purlin bracket 8; the secondary purlin 3 is arranged at intervals along the radial direction above the adjacent main purlin 2, and the secondary purlin 3 is connected to the main purlin 2 through a secondary purlin bracket 9; a waterproof layer 5 is laid at the bottom of the secondary purlin 3 The bottom plate layer 10 is provided with a supporting layer 11 on the top of the secondary purlin 3; the space between the bottom plate layer 10 and the supporting layer 11 is filled with a sound absorbing layer 12; the top of the supporting layer 11 is provided with a vapor barrier layer 13; the thermal insulation layer 4 and the waterproof layer 5 are sequentially provided on the vapor barrier layer 13; the waterproof layer 5 adopts a double waterproof layer, and a finishing layer 14 is provided on the top of the waterproof layer 5; an inner connecting keel 15 is provided on the inner side of the thermal insulation layer 4 in a circumferential direction; The skylight roof structure includes a skylight keel 20, a fixed glass window 21 and an openable glass window 22; the skylight keel 20 is connected to the roof truss support structure on the inner side of the metal roof structure; the skylight keel 20 is a triangular grid structure; the fixed glass window 21 and the openable glass window 22 are both triangular in shape and are installed on the skylight keel 20 at the corresponding triangular grids; an electric push rod is provided on the skylight keel 20 below the openable glass window 22, and the electric push rod is hingedly connected to the hinged connecting piece provided at the bottom of the skylight keel 20, one side of the openable glass window 22 is hingedly connected to the skylight keel 20, and can be vertically rotated around a horizontal axis, and the electric push rod is connected to the bottom of the openable glass window 22, away from the hinged connection side.

[0040] The inner drainage ditch 6 is arranged above the roof truss supporting structure, and the outer side surface of the inner drainage ditch 6 is connected to the inner connecting keel 15, and the inner side surface of the inner drainage ditch 6 is connected to the skylight structure; a waterproof sealing structure is arranged at the joint between the inner drainage ditch 6 and the skylight structure; a flashing plate 24 is arranged above the outer side surface of the inner drainage ditch 6; the upper edge of the flashing plate 24 covers the top of the waterproof layer 5; The external drainage ditch 7 is embedded in the metal roof structure, close to the outer edge of the metal roof structure; external connection keels 16 are respectively arranged on the metal roof structure on both sides of the external drainage ditch 7; the tops of the inner and outer sides of the external drainage ditch 7 are respectively connected to the external connection keels 16; The radial drainage ditch 23 is embedded in the metal roof structure, and radial connecting keels 29 are respectively arranged on the metal roof structure on both sides of the radial drainage ditch 23; the left and right sides of the radial drainage ditch 23 are respectively connected to the radial connecting keel 29 structure. In this embodiment, the plane shape of the composite metal roof system is an ellipse, and the roof truss support structure is a steel structure and is arranged on the vertical steel structure of the main structure.

[0041] In this embodiment, the roof truss support structure includes an inner ring truss support 26, an outer ring truss support 27 and a skylight support 28; the skylight support 28 is circular in plan, and the top surface of the skylight support 28 is a slope that gradually slopes downward from the center to the edge; the skylight support 28 is connected by multiple trusses arranged radially, and the trusses are connected by connecting rods, which are horizontal, longitudinal or oblique; the inner ring truss support 26 is annular, and is connected by multiple trusses using connecting rods; the inner ring truss support 26 is connected to the outside of the skylight support 28, and the inner ring truss support 26 is connected to the outside of the skylight support 28, and the inner ring truss support 26 is connected to the outside of the skylight support 28. The top surface of the ring truss support 26 is lower than the top surface of the skylight top support 28; the top surface of the inner ring truss support 26 is a slope that gradually slopes downward from the inside to the outside, with a slope of 1%; the outer ring truss support 27 is annular, and is composed of multiple trusses connected by connecting rods; the outer ring truss support 27 is connected to the outside of the inner ring truss support 26, and the top surface of the outer ring truss support 27 is a slope that gradually slopes downward from the inside to the outside; the top surface slope of the outer ring truss support 27 is greater than the slope of the inner ring truss support 26, which is 2%; the outer drainage ditch 7 is arranged above the junction of the outer ring truss support 27 and the inner ring truss support 26.

[0042] In this embodiment, the inner drainage ditch 6 includes a first outer plate 6.1, a first gutter support 6.2 and a first gutter plate 6.3; the radial section of the first gutter support 6.2 is U-shaped, the outer side surface of the first gutter support 6.2 is connected to the inner connecting keel 15, and the inner side surface of the first gutter support 6.2 is connected to the skylight keel 20; the radial sections of the first gutter plates 6.3 are all U-shaped, and are laid in the U-shaped groove of the first gutter support 6.2; the upper edge of the outer side surface of the first gutter plate 6.3 is bent outward from the groove, and the bent portion covers the top of the inner connecting keel 15; the flashing plate 24 is shielded above the connection portion between the first gutter plate 6.3 and the inner connecting keel 15; the upper edge of the inner side surface of the first gutter plate 6.3 is connected to the skylight structure, and a waterproof sealing structure is arranged at the joint; the first outer package plate 6.1 is wrapped outside the U-shaped groove of the first gutter support 6.2, and the upper edge of the outer side surface of the first outer package plate 6.1 is attached to the bottom of the bottom plate layer 10, and the upper edge of the inner side surface of the first outer package plate 6.1 is connected to the bottom of the connecting skylight keel 20; the space between the first gutter plate 6.3 and the first outer package plate 6.1 is filled with a first rock wool layer 6.4.

[0043] In this embodiment, the external drainage ditch 7 includes a second outer package plate 7.1, a second ditch support 7.2 and a second ditch plate 7.3; the radial section of the second ditch support 7.2 is U-shaped, and the inner and outer side surfaces of the second ditch support 7.2 are respectively connected to the external connecting keels 16 on both sides; the radial sections of the second ditch plates 7.3 are all U-shaped and laid in the U-shaped groove of the second ditch support 7.2; the upper edges of the inner and outer sides of the second ditch plates 7.3 are provided with folded edges, and the folded edges cover the top of the corresponding external connecting keels 16; the second outer package plate 7.1 is wrapped outside the U-shaped groove of the second ditch support 7.2, and the inner and outer side edges of the second outer package plate 7.1 are attached to the bottom of the bottom plate layer 10 on both sides; the space between the second ditch plate 7.3 and the second outer package plate 7.1 is filled with a second rock wool layer 7.4.

[0044] In this embodiment, the metal roof structure is disconnected at the position of the radial gutter 23, and radial connecting keels 29 are arranged on the insulation layer 4 on both sides of the radial gutter 23; the radial gutter 23 includes a third outer cover plate 23.1, a third gutter support 23.2 and a third gutter plate 23.3; the circumferential section of the third gutter support 23.2 is U-shaped, and the left and right sides of the third gutter support 23.2 are respectively connected to the radial connecting keel 29; the circumferential section of the third gutter plate 23.3 is U-shaped, Laid in the U-shaped groove of the third gutter support 23.2; the upper edges of the side surfaces on both sides of the third gutter plate 23.3 are bent outwards of the groove respectively, and the folded edges cover the top of the radially connected keel 29; the third outer package plate 23.1 is wrapped outside the U-shaped groove of the third gutter support 23.2; the upper edges of the side surfaces on both sides of the third outer package plate 23.1 are provided with folded edges, and the folded edges are attached to the bottom of the bottom plate layer 10; the space between the third gutter plate 23.3 and the third outer package plate 23.1 is filled with a third rock wool layer 23.4.

[0045] In this embodiment, the main purlin support 8 includes a mounting plate 8.1 and a first connecting plate 8.2; a pad 8.3 is provided at the bottom of the mounting plate 8.1, and the pad 8.3 is welded to the top of the roof truss support structure; a support plate 8.4 is provided between the two sides of the pad 8.3 and the bottom of the mounting plate 8.1; there are two first connecting plates 8.2, which are respectively provided on both sides of the top of the mounting plate 8.1, and the two first connecting plates 8.2 are respectively clamped on both sides of the main purlin 2; the main purlin 2 and the two first connecting plates 8.2 are connected by first tension bolts 17.

[0046] In this embodiment, the secondary purlin support 9 includes a second connecting plate 9.1; there are two second connecting plates 9.1, which are radially welded to the top of the main purlin 2, and the two second connecting plates 9.1 are respectively clamped on both sides of the secondary purlin 3; the secondary purlin 3 and the two second connecting plates 9.1 are connected by second tension bolts 18.

[0047] In this embodiment, a dustproof layer 19 is laid on the top of the bottom plate layer 10; the sound-absorbing layer 12 is laid on the dustproof layer 19, and the sound-absorbing layer 12 is spliced ​​by a group of sound-absorbing blocks; the sound-absorbing blocks are filled in the space surrounded by the supporting layer 11, the bottom plate layer 10 and the secondary purlin 3.

[0048] In this embodiment, the insulation layer 4 includes an annular keel 4.1, a radial keel 4.2 and an insulation board 4.3; the radial keel 4.2 has a group, which is arranged in an annular direction and spaced apart, and the radial keel 4.2 is connected to the supporting layer 11 through a fastener; the annular keel 4.1 is connected to the top of the adjacent radial keel 4.2; the insulation board 4.3 is provided with two layers, the upper insulation board is connected between the annular keels 4.1, and the lower insulation board is connected between the radial keels 4.2; The waterproof layer 5 includes a lower waterproof membrane 5.1 and an upper waterproof board 5.2; the lower waterproof membrane 5.1 is laid on the top of the insulation layer 4; the upper waterproof board 5.2 is made of vertical lock-edge aluminum-magnesium-manganese plates, and the upper waterproof board 5.2 is connected to the annular keel 4.1 by a support 5.3.

[0049] In this embodiment, the planar shape of the roof truss support structure is circular. In this embodiment, a corner code 1 is provided at the top of the skylight keel 20, near the edge; a hook is provided at the upper edge of the inner side surface of the first gutter plate 6.3, and the hook is hooked to the upper end of the corner code 1; the waterproof sealing structure is a sealing rod, and the sealing rod is filled in the joint between the corner code 1 and the fixed glass window 21; and sealant is provided on the top of the sealing rod.

[0050] In this embodiment, the facing layer 14 includes a facing panel 14.1 and a facing keel 14.2; the facing keel 14.2 is connected to the top of the waterproof layer 5 through a connecting component 14.3; and the facing panel 14.1 is connected to the top of the facing keel 14.2.

[0051] In this embodiment, the roof truss supporting structure adopts a steel structure.

[0052] In this embodiment, the cross-sections of the radial keel 4.2 and the annular keel 4.1 are in a "X" shape.

[0053] In this embodiment, the support 5.3 includes a support rod 5.3.1 and a supporting plate 5.3.2; the support rod 5.3.1 is in an inverted U shape, and the two ends of the bottom of the support rod 5.3.1 are bent horizontally outward to form a folded edge; the folded edge is connected to the top of the annular keel 4.1; the supporting plate 5.3.2 is connected to the top of the support rod 5.3.1, and the top edge of the supporting plate 5.3.2 is bent into a curled edge; the curled edge is stuck in the locking connection of the upright locking aluminum-magnesium-manganese plate.

[0054] In this embodiment, the connecting assembly 14.3 includes an I-shaped plate 14.3.1 and an L-shaped plate 14.3.2; the I-shaped plate 14.3.1 is connected to the top of the upper waterproof plate 5.2 by bolts; the L-shaped plate 14.3.2 is connected to the top of the I-shaped plate 14.3.1, and the L-shaped plate 14.3.2 is connected to the finishing keel 14.2.

[0055] In this embodiment, the main purlin 2 is made of galvanized square tube; the secondary purlin 3 is made of galvanized rectangular steel, the bottom plate layer 10 is made of aluminum alloy pressed plate, and the thickness of the bottom plate layer 10 is 0.5mm~1mm; the dustproof layer 19 is made of non-woven fabric, the bulk density of the dustproof layer 19 is 32kg / m³, and the hydrophobicity is greater than 98%; the supporting layer 11 is made of aluminum alloy pressed plate, and the thickness of the supporting layer 11 is 1mm; the vapor barrier layer 13 is made of 0.3mm thick PE vapor barrier film; the decorative panel 14.1 is made of 3mm thick aluminum single plate.

[0056] In this embodiment, the inner edge of the waterproof layer 5 exceeds the inner edge of the finishing layer 14, and a water retaining plate 20 is provided at the top of the waterproof layer 5, close to the inner drainage ditch 6. Rainwater on the finishing layer 14 flows to the top of the waterproof layer 5, and then flows from the waterproof layer 5 to the water retaining plate 20, and flows into the inner drainage ditch 6 through the water retaining plate 20.

[0057] The construction method of the composite metal roofing system comprises the following steps.

[0058] Step 1: Construct the roof truss support structure: weld the roof truss support structure on the top of the main structure.

[0059] Step 2, at the top of the roof truss supporting structure and around the skylight structure to be constructed, the main purlin 2, the secondary purlin 3, the bottom plate layer 10, the sound absorbing layer 12, the supporting layer 11, the vapor barrier layer 13, the thermal insulation layer 4 and the waterproof layer 5 are sequentially constructed, and an inner connecting keel 15 is arranged on the inner side of the thermal insulation layer 4 along the circumferential direction, and an outer connecting keel 16 is arranged on the outer side of the thermal insulation layer 4 along the circumferential direction.

[0060] Step three, construct the skylight keel 20.

[0061] Step 4: construct the inner drainage ditch 6, the outer drainage ditch 7 and the radial drainage ditch 23.

[0062] Step 5: construct the fixed glass window 21 and the openable glass window 22.

[0063] Step six, construct the waterproof layer 5 and the finishing layer 14 in sequence, and the construction is now completed.

[0064] The above embodiments are not exhaustive of specific implementation methods, and there may be other embodiments. The above embodiments are intended to illustrate the present invention rather than to limit the protection scope of the present invention. All applications derived from simple variations of the present invention fall within the protection scope of the present invention.

Claims

1. A composite metal roof system, comprising a roof truss support structure, a metal roof structure and a skylight structure; characterized in that: The roof truss support structure is installed on the top of the main structure, and the top elevation of the roof truss support structure is high in the middle and low around the periphery; the metal roof structure is ring-shaped and installed on the top of the roof truss support structure; a circle of outer drainage ditch (7) is arranged on the outer side of the metal roof structure near the edge; the skylight structure is circular and installed on the roof truss support structure in the ring of the metal roof structure; a circle of inner drainage ditch (6) is arranged between the inner edge of the metal roof structure and the skylight structure; radial drainage ditch (23) is arranged on the metal roof structure along the annular interval; the radial drainage ditch (23) connects the inner drainage ditch (6) with the outer drainage ditch (7); The metal roof structure comprises a main purlin (2), a secondary purlin (3), an insulation layer (4) and a waterproof layer (5); a group of the main purlins (2) are arranged at intervals along the circumferential direction on a roof truss support structure around the skylight structure, and the main purlins (2) are connected to the roof truss support structure via a main purlin bracket (8); the secondary purlins (3) are arranged at intervals along the radial direction above adjacent main purlins (2), and the secondary purlins (3) are connected to the main purlins (2) via a secondary purlin bracket (9); a bottom plate layer is laid at the bottom of the secondary purlins (3) (10), a supporting layer (11) is laid on the top of the secondary purlin (3); a sound absorbing layer (12) is filled in the space between the bottom plate layer (10) and the supporting layer (11); a vapor barrier layer (13) is laid on the top of the supporting layer (11); the thermal insulation layer (4) and the waterproof layer (5) are laid on the vapor barrier layer (13) in sequence; the waterproof layer (5) adopts a double waterproof layer, and a finishing layer (14) is arranged above the waterproof layer (5); an inner connecting keel (15) is arranged on the inner side of the thermal insulation layer (4) along the circumferential direction; The skylight roof structure comprises a skylight keel (20), a fixed glass window (21) and an openable glass window (22); the skylight keel (20) is connected to a roof truss support structure on the inner side of a metal roof structure; the skylight keel (20) is a triangular grid structure; the fixed glass window (21) and the openable glass window (22) are both triangular in shape and are installed on the skylight keel (20) at positions corresponding to the triangular grid; The inner drainage ditch (6) is arranged above the roof truss support structure, and the outer side surface of the inner drainage ditch (6) is connected to the inner connecting keel (15), and the inner side surface of the inner drainage ditch (6) is connected to the skylight structure; a waterproof sealing structure is arranged at the joint between the inner drainage ditch (6) and the skylight structure; a flashing plate (24) is arranged above the outer side surface of the inner drainage ditch (6); the upper edge of the flashing plate (24) covers the top of the waterproof layer (5); The external drainage ditch (7) is embedded in the metal roof structure, close to the outer edge of the metal roof structure; external connection keels (16) are respectively arranged on the metal roof structure on both sides of the external drainage ditch (7); the tops of the inner and outer sides of the external drainage ditch (7) are respectively connected to the external connection keels (16); The radial drainage ditch (23) is embedded in the metal roof structure, and radial connecting keels (29) are respectively arranged on the metal roof structure on both sides of the radial drainage ditch (23); the left and right side surfaces of the radial drainage ditch (23) are respectively connected to the radial connecting keel (29) structure.

2. The composite metal roofing system according to claim 1, characterized in that: The roof truss support structure comprises an inner ring truss support (26), an outer ring truss support (27) and a skylight support (28); the plane shape of the skylight support (28) is circular, and the top surface of the skylight support (28) is a slope surface that gradually slopes downward from the center to the edge; the skylight support (28) is formed by connecting a plurality of trusses arranged radially; the inner ring truss support (26) is annular and is formed by connecting a plurality of trusses; the inner ring truss support (26) is connected to the outer side of the skylight support (28). , and the top surface of the inner ring truss support (26) is lower than the top surface of the skylight top support (28); the top surface of the inner ring truss support (26) is a slope that gradually slopes downward from the inside to the outside; the outer ring truss support (27) is annular and is formed by connecting multiple trusses; the outer ring truss support (27) is connected to the outside of the inner ring truss support (26), and the top surface of the outer ring truss support (27) is a slope that gradually slopes downward from the inside to the outside; the top surface slope of the outer ring truss support (27) is greater than the slope of the inner ring truss support (26).

3. The composite metal roofing system according to claim 1, characterized in that: The inner drainage ditch (6) comprises a first outer covering plate (6.1), a first gutter support (6.2) and a first gutter plate (6.3); the radial section of the first gutter support (6.2) is U-shaped, the outer side surface of the first gutter support (6.2) is connected to the inner connecting keel (15), and the inner side surface of the first gutter support (6.2) is connected to the skylight keel (20); the radial section of the first gutter plate (6.3) is U-shaped and is laid in the U-shaped groove of the first gutter support (6.2); the upper edge of the outer side surface of the first gutter plate (6.3) is bent outward from the groove, and the bent portion covers the top of the inner connecting keel (15); the flashing plate (24 ) is shielded above the connection portion between the first gutter plate (6.3) and the inner connecting keel (15); the upper edge of the inner side surface of the first gutter plate (6.3) is connected to the skylight structure, and a waterproof sealing structure is arranged at the joint; the first outer package plate (6.1) is wrapped outside the U-shaped groove of the first gutter support (6.2), and the upper edge of the outer side surface of the first outer package plate (6.1) is attached to the bottom of the bottom plate layer (10), and the upper edge of the inner side surface of the first outer package plate (6.1) is connected to the bottom of the connecting skylight keel (20); the space between the first gutter plate (6.3) and the first outer package plate (6.1) is filled with a first rock wool layer (6.4).

4. The composite metal roofing system according to claim 1, characterized in that: The external drainage ditch (7) comprises a second outer cover plate (7.1), a second ditch support (7.2) and a second ditch plate (7.3); the radial section of the second ditch support (7.2) is U-shaped, and the inner and outer side surfaces of the second ditch support (7.2) are respectively connected to the external connection keels (16) on both sides; the radial section of the second ditch plate (7.3) is U-shaped and is laid in the U-shaped groove of the second ditch support (7.2); the upper edges of the inner and outer sides of the second ditch plate (7.3) are provided with folded edges, and the folded edges cover the top of the corresponding external connection keels (16); the second outer cover plate (7.1) is wrapped outside the U-shaped groove of the second ditch support (7.2), and the upper edges of the inner and outer sides of the second outer cover plate (7.1) are attached to the bottom of the bottom plate layer (10) on both sides; the space between the second ditch plate (7.3) and the second outer cover plate (7.1) is filled with a second rock wool layer (7.4).

5. The composite metal roofing system according to claim 1, characterized in that: The metal roof structure is disconnected at the position of the radial drainage ditch (23), and radial connecting keels (29) are arranged on the insulation layer (4) on both sides of the radial drainage ditch (23); the radial drainage ditch (23) includes a third outer cladding plate (23.1), a third gutter support (23.2) and a third gutter plate (23.3); the circumferential section of the third gutter support (23.2) is U-shaped, and the left and right sides of the third gutter support (23.2) are respectively connected to the radial connecting keel (29); the circumferential section of the third gutter plate (23.3) is U-shaped, and the paving The third gutter plate (23.3) is arranged in the U-shaped groove of the third gutter support (23.2); the upper edges of the side surfaces on both sides of the third gutter plate (23.3) are respectively bent outwards of the groove, and the folded edges cover the top of the radial connection keel (29); the third outer cover plate (23.1) is wrapped outside the U-shaped groove of the third gutter support (23.2); the upper edges of the side surfaces on both sides of the third outer cover plate (23.1) are provided with folded edges, and the folded edges are attached to the bottom of the bottom plate layer (10); the space between the third gutter plate (23.3) and the third outer cover plate (23.1) is filled with a third rock wool layer (23.4).

6. The composite metal roofing system according to claim 1, characterized in that: The main purlin support (8) comprises a mounting plate (8.1) and a first connecting plate (8.2); a cushion block (8.3) is arranged at the bottom of the mounting plate (8.1), and the cushion block (8.3) is welded to the top of the roof truss supporting structure; a supporting plate (8.4) is arranged between the two sides of the cushion block (8.3) and the bottom of the mounting plate (8.1); there are two first connecting plates (8.2), which are respectively arranged at the two sides of the top of the mounting plate (8.1), and the two first connecting plates (8.2) are respectively clamped at the two sides of the main purlin (2); the main purlin (2) and the two first connecting plates (8.2) are connected via first tension bolts (17).

7. The composite metal roofing system according to claim 1, characterized in that: The secondary purlin support (9) comprises a second connecting plate (9.1); the second connecting plates (9.1) are in two pieces and are radially welded to the top of the main purlin (2), and the two second connecting plates (9.1) are respectively clamped on both sides of the secondary purlin (3); the secondary purlin (3) and the two second connecting plates (9.1) are connected via second tension bolts (18).

8. The composite metal roofing system according to claim 1, characterized in that: A dustproof layer (19) is laid on the top of the bottom plate layer (10); the sound-absorbing layer (12) is laid on the dustproof layer (19), and the sound-absorbing layer (12) is formed by splicing a group of sound-absorbing blocks; and the sound-absorbing blocks are filled in the space enclosed by the supporting layer (11), the bottom plate layer (10) and the secondary purlin (3).

9. The composite metal roofing system according to claim 1, characterized in that: The thermal insulation layer (4) comprises an annular keel (4.1), radial keels (4.2) and a thermal insulation board (4.3); the radial keels (4.2) are arranged in a group in an annular direction at intervals, and the radial keels (4.2) are connected to the support layer (11) via fasteners; the annular keels (4.1) are connected to the tops of adjacent radial keels (4.2); the thermal insulation board (4.3) is provided with two layers, the upper thermal insulation board is connected between the annular keels (4.1), and the lower thermal insulation board is connected between the radial keels (4.2); The waterproof layer (5) comprises a lower waterproof coiled material (5.1) and an upper waterproof board (5.2); the lower waterproof coiled material (5.1) is laid on the top of the thermal insulation layer (4); the upper waterproof board (5.2) is formed by splicing upright lock-edge aluminum-magnesium-manganese plates, and the upper waterproof board (5.2) is connected to the annular keel (4.1) by a support (5.3).

10. A construction method of the composite metal roofing system according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: construct the roof truss support structure: weld the roof truss support structure on the top of the main structure; Step 2: constructing the main purlin (2), the secondary purlin (3), the bottom plate layer (10), the sound absorbing layer (12), the supporting layer (11), the vapor barrier layer (13), the thermal insulation layer (4) and the waterproof layer (5) in sequence on the top of the roof truss supporting structure and around the skylight structure to be constructed, and arranging an inner connecting keel (15) on the inner side of the thermal insulation layer (4) along the circumferential direction, and arranging an outer connecting keel (16) on the outer side of the thermal insulation layer (4) along the circumferential direction; Step 3, constructing the skylight keel (20); Step 4: constructing the inner drainage ditch (6), the outer drainage ditch (7) and the radial drainage ditch (23); Step 5: constructing fixed glass windows (21) and openable glass windows (22); Step six: construct the waterproof layer (5) and the finishing layer (14) in sequence, and the construction is now complete.

Images