Metal roof panel and support double-sided mortise and tenon connection node

Abstract

The application discloses a metal roof panel and support double-side mortise and tenon joint node, which comprises a plurality of mutually connected metal roof panel bodies, further comprises a mortise and tenon support, and the connecting positions of two adjacent metal roof panel bodies are respectively a male rib and a female rib; the top of the male rib and the female rib is respectively provided with a male crimped rib and a female crimped rib; the male crimped rib and the female crimped rib are mutually connected; the middle part of the male rib and the female rib is respectively provided with a linear sliding groove and a tenon; the mortise and tenon support comprises a support connecting plate, a mortise and tenon vertical plate vertically connected to the upper part of the support connecting plate; the two sides of the mortise and tenon vertical plate are provided with mortise and tenons; the mortise and tenons are in plug-in connection with the tenons of the metal roof panel bodies; and the mortise and tenon support is in telescopic sliding connection with the linear sliding grooves and the tenons of the metal roof panel bodies. The application can improve the wind lifting resistance of the metal roof system, improve the release performance of the temperature expansion stress of the roof panel and the support connection, and improve the wind disaster resistance of the metal roof system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel structure building metal roof, in particular to a metal roof panel and support double-sided mortise and tenon connection node. BACKGROUND

[0002] Metal roof is mainly used in large-span public buildings such as airports, exhibitions, stadiums and industrial buildings. The connection between metal roof and support usually uses roof panel rib top edge connection or lock edge connection. The wind resistance performance of single-layer metal roof panel is generally 2-3KPa. The maximum wind load of buildings located in coastal typhoon landing areas in China is about 2.5-6KPa. Many metal roofs do not meet the performance requirements of wind resistance and are usually solved by structural encryption or roof panel reinforcement measures. However, many roofs are still damaged under strong typhoon, causing great property and economic loss.

[0003] At present, under the background of the national "double carbon" target, metal roof distributed photovoltaic power station has been used as the main application form of roof distributed power station. According to the research results at home and abroad, the wind load of metal roof with photovoltaic system installed on the upper part will be 1.2-1.5 times higher than that of the roof without photovoltaic system. Therefore, the higher the wind resistance performance of photovoltaic roof is required, and the greater the property and economic loss caused by the damage of photovoltaic power station roof due to wind disaster will be. Therefore, improving the wind resistance performance of metal roof is of great significance to the national promotion of roof distributed power station, and can improve the safety and reliability of metal roof and reduce the economic loss of building damage caused by wind disaster. SUMMARY

[0004] In order to improve the overall wind resistance performance of metal roof, the present application provides a metal roof panel and support double-sided mortise and tenon connection node. The present application can improve the wind resistance performance of metal roof system, improve the release performance of temperature expansion stress between roof panel and support, and improve the wind resistance ability of metal roof system.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] The metal roof panel and support double-sided mortise and tenon joint node comprises a plurality of mutually connected metal roof panel bodies, further comprises a mortise and tenon support, the connecting position of two adjacent metal roof panel bodies is a male rib and a female rib respectively, the top of the male rib and the female rib is respectively provided with a male crimping rib and a female crimping rib, the male crimping rib and the female crimping rib are connected with each other, the middle part of the male rib and the female rib is provided with a line sliding groove and a tenon head, the mortise and tenon support comprises a support connecting plate, a mortise and tenon vertical plate vertically connected to the upper part of the support connecting plate, the two sides of the mortise and tenon vertical plate are provided with mortise and tenon, the mortise and tenon is insertedly connected with the tenon head of the metal roof panel body, the mortise and tenon support and the line sliding groove and the tenon head of the metal roof panel body are telescopically slidably connected.

[0007] In the scheme, the connecting position of two adjacent metal roof panel bodies is linear longitudinal connection, and a plurality of mortise and tenon supports distributed along the longitudinal direction are used as supports, the metal roof panel body and the mortise and tenon support are connected by mortise and tenon, that is, a protruding tenon head is arranged on the side edge of the metal roof panel body, recessed mortise and tenon cooperating with the tenon head are arranged on the two sides of the mortise and tenon support, and the top of the mortise and tenon vertical plate of the mortise and tenon support is matched with the line sliding groove of the metal roof panel body, the connection of the tenon head and the mortise and tenon and the connection of the mortise and tenon vertical plate and the line sliding groove are all slidably connected, since the connecting position of the metal roof panel body is the long side, thermal expansion and contraction problems will occur in the longitudinal direction, therefore, the mortise and tenon support of the scheme does not limit the expansion and contraction movement of the metal roof panel body in the longitudinal direction, but can greatly improve the tensile stress resistance, pressure resistance and out-of-plane rotation stress resistance of the metal roof.

[0008] As a preferred scheme of the application, the tenon head is composed of an upper wall plate, a side vertical plate and a lower wall plate, the upper wall plate and the lower wall plate are respectively vertically connected with the two sides of the side vertical plate and form a protruding tenon head on the metal roof panel body, a recessed groove wall plate on the same side as the upper wall plate is arranged between the upper wall plate and the male crimping rib or the female crimping rib of the tenon head, the upper wall plate and the recessed groove wall plate are connected at the end and form a line sliding groove extending along the longitudinal line of the metal roof panel body, and the opening of the line sliding groove and the opening of the tenon head are opposite to each other. In the scheme, the male rib and the female rib are integrally formed, the tenon head and the line sliding groove share the upper wall plate as a side edge, which reasonably utilizes the material and improves the structural strength of the male rib and the female rib of the side vertical plate.

[0009] As a preferred embodiment of the present invention, the mortise and tenon support comprises a mortise and tenon plate, a male rib mortise and tenon, a female rib mortise and tenon, and a support connecting plate; the male rib mortise and tenon is located on the upper part of one side of the mortise and tenon support, and is composed of a mortise and tenon plate, a first upper wall plate, and a first lower wall plate stamped and folded from the mortise and tenon plate, and is inserted into the male rib mortise of the metal roof panel body; the female rib mortise and tenon is located on both ends of the other side of the mortise and tenon support, and is composed of a mortise and tenon plate, a second upper wall plate, and a second lower wall plate stamped and folded from the mortise and tenon plate, and is inserted into the female rib mortise of the metal roof panel body; the support connecting plate is located on the same side of the mortise and tenon plate as the female rib mortise and tenon, and is provided with screw connection holes, and is connected to the steel purlin with screws; the mortise and tenon support is made of a 1 to 2 mm thick metal plate.

[0010] In a preferred embodiment of the present invention, the mortise and tenon support comprises a mortise and tenon stand, a male rib mortise and tenon, a female rib mortise and tenon, and a support connecting plate; the male rib mortise and tenon is located on the upper part of one side of the mortise and tenon support, and is composed of a mortise and tenon stand, a first upper wall plate, and a first lower wall plate, and is connected to the male rib mortise and tenon of the metal roof panel body by insertion; the female rib mortise and tenon is located on the other side of the mortise and tenon support, and is composed of a mortise and tenon stand, a second upper wall plate, and a second lower wall plate, and the female rib... The tenon and mortise are connected to the female rib of the metal roof panel body by insertion; the first upper wall panel, the second upper wall panel, the first lower wall panel, and the second lower wall panel are respectively perpendicular to the tenon and mortise upright and are set along the same length as the tenon and mortise upright; the support connecting plate and the female rib tenon and mortise are located on the same side of the tenon and mortise upright, and the support connecting plate is provided with screw connection holes. The support connecting plate is connected to the steel purlin with screws; the tenon and mortise support is cut from aluminum alloy or steel extrusion into thick profiles with a wall thickness of 2 mm to 30 mm.

[0011] The tenon and groove support in this design can be integrally extruded or cast from metal material and then cut twice, or it can be formed by folding a metal plate. Screw connection holes are provided on the support connecting plate, and the second lower wall plate is staggered with the screw connection holes to avoid interfering with the connection between the screws and the steel purlins on the roof.

[0012] As a preferred embodiment of the present invention, the male rolled edge rib and the female rolled edge rib are connected to each other by means of rolled edge, snap-locking edge or welding to connect two adjacent metal roof panels to form an integral metal roof.

[0013] As a preferred embodiment of the present invention, the metal roof panel body is formed by pressing a metal sheet with a thickness of 0.5 mm to 0.8 mm.

[0014] As a preferred embodiment of the present invention, the following installation steps are adopted: positioning and installing the first tenon support at the edge of the metal roof, installing the starting metal roof panel body, installing the second tenon support, installing the second metal roof panel body, connecting the male and female rolled edge ribs of the two adjacent metal roof panel bodies, alternately installing the connecting tenon support and the metal roof panel body, and mechanically rolling, interlocking, or welding the male and female rolled edge ribs.

[0015] As a preferred embodiment of the present invention, during the installation of the tenon and mortise support, the male rib tenon of the tenon and mortise support is pushed flat on one side to insert the male rib mortise of the metal roof panel body into the male rib tenon of the tenon and mortise support, and then the support connecting plate of the tenon and mortise support is fixed to the steel purlin with screws; during the installation of the second metal roof panel body, the female rolled edge rib of the second metal roof panel body is fastened at an angle in the width direction to the upper part of the male rolled edge rib of the first metal roof panel body that has been installed in place, and then the second metal roof panel body is rotated to a horizontal position, and finally the female rib mortise of the second metal roof panel body is pushed flat to place the female rib mortise of the tenon and mortise support that has been fixed and installed.

[0016] The metal roof panel and support double-sided tenon-and-mortise connection node of the present invention has tensile strength, compressive strength, and out-of-plane rotational strength of the ribs. The tensile strength is achieved by transmitting upward tensile forces such as wind loads through the side uprights and upper wall panels of the male and female rib joints of the metal roof panel body to the upper wall panel of the male and female rib tenon joints of the tenon joint support, to the tenon joint uprights, to the support connecting plate, to the support connecting screws, and finally to the upper flange of the steel purlin. The compressive strength is achieved by transmitting vertical pressure from roof snow loads, additional layers, etc., through the side uprights of the male and female rib joints of the metal roof panel body. The force is transmitted from the upright plate and the lower wall plate to the lower wall plate of the male and female rib tenons of the tenon and groove support, to the upright plate of the tenon and groove support, to the support connecting plate, to the support connecting screw, and then to the upper flange of the steel purlin. The out-of-plane rotational force performance of the plate rib is to transmit the out-of-plane rotational force of the metal roof panel bottom plate on the roof panel rib caused by the upward wind suction through the male and female rib tenons of the metal roof panel body to the upper wall plate, side upright plate, and lower wall plate of the tenon and groove support, forming self-balancing, or through the transmission to the upright plate of the tenon and groove support, to the support connecting plate, to the support connecting screw, and then to the upper flange of the steel purlin.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This invention changes the connection method and pull-out force transmission method of traditional metal roof panel supports, and invents a new type of double-sided tenon and mortise connection node between metal roof panels and supports, which has tensile and compressive load-bearing performance and improves the wind uplift resistance of metal roofs.

[0019] 2. This invention solves the problem of weak connection nodes where the bearing rolled edge connecting piece or the interlocking joint is dislodged and fails. It also provides a new strong connection node for buckling failure of metal roof panels with strong constraints on both sides of the bearing, thereby improving the stress performance of the connection between the metal roof and the bearing.

[0020] 3. This invention reduces the out-of-plane wind-resistant rotational moment of the ribs on both sides of the metal roof panel, optimizing the moment from the top of the ribs to the middle of the ribs. The moment is reduced by about 50%, which improves the load-bearing capacity of the metal roof panel against out-of-plane rotational failure of the ribs under wind suction, and improves the wind resistance performance of the supports by 50%-80%.

[0021] 4. This invention solves the problem that ordinary roof supports with a 20-40mm limited sliding distance cannot meet the performance requirements for temperature stress release of ultra-long roof panels with a length greater than 50 meters. It also proposes a connection technology for the sliding of a fixed support and the longitudinal groove of the roof panel.

[0022] 5. This invention proposes an installation technology for double-sided mortise and tenon joints between metal roof panels and roof supports, which improves the installation efficiency of metal roof panels and ensures the construction quality of mortise and tenon joints. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of one structure of the present invention.

[0024] Figure 2 This is a schematic diagram of a node structure according to the present invention.

[0025] Figure 3 This is a schematic diagram of another node structure according to the present invention.

[0026] Figure 4 This is a schematic diagram of a male rib of the metal roof panel body according to the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the main rib of the metal roof panel body according to the present invention.

[0028] Figure 6 This is a schematic diagram of a tenon-groove support according to the present invention.

[0029] Figure 7 for Figure 6 A three-dimensional structural diagram of the male rib of the tenon-groove support.

[0030] Figure 8 for Figure 6 A three-dimensional structural diagram of the tenon support rib.

[0031] Figure 9 This is a three-dimensional structural diagram of the male rib of the second type of tenon groove support of the present invention.

[0032] Figure 10This is a three-dimensional structural diagram of the second type of tenon groove support rib of the present invention.

[0033] Figure 11 This is a three-dimensional structural diagram of the male rib of the third type of tenon groove support of the present invention.

[0034] Figure 12 This is a three-dimensional structural diagram of the third type of tenon groove support rib of the present invention.

[0035] Figure 13 This is an exploded view of one of the structures of the present invention.

[0036] Figure 14 This is a schematic diagram of the first step in the installation process of this invention.

[0037] Figure 15 This is a schematic diagram of the second step of the installation process of this invention.

[0038] Figure 16 This is a schematic diagram of the third step in the installation process of this invention.

[0039] Figure 17 This is a schematic diagram of the fourth step in the installation process of this invention.

[0040] Figure 18 This is a schematic diagram of the fifth step in the installation process of this invention.

[0041] Figure 19 This is a schematic diagram of the sixth step in the installation process of this invention.

[0042] In the diagram: 1. Metal roof panel body; 2. Mortise and tenon support; 3. Male rib; 4. Female rib.

[0043] 5. Male rolled edge rib; 6. Female rolled edge rib; 7. Line groove; 8. Tenon.

[0044] 9. Screws; 10. Steel purlins; 11. Bearing pads; 21. Bearing connecting plates.

[0045] 22. Mortise and tenon stand plate; 23. Male rib mortise and tenon; 24. Female rib mortise and tenon.

[0046] 25. First upper wall panel; 26. First lower wall panel; 27. Second upper wall panel

[0047] 28. Second lower wall panel; 29. ​​Screw connection hole; 71. Groove wall panel

[0048] 81. Upper wall panel; 82. Side panel; 83. Lower wall panel. Detailed Implementation

[0049] To facilitate understanding of the present invention, a more comprehensive description of the invention will be given below with reference to the accompanying drawings, and several embodiments of the invention will be provided. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be more thorough and complete.

[0050] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0052] Please see Figures 1-12 The present invention provides a technical solution:

[0053] A mortise and tenon joint between a metal roof panel and a support includes multiple interconnected metal roof panel bodies 1 and a mortise and tenon support 2. The connection points of two adjacent metal roof panel bodies 1 are male rib 3 and female rib 4, respectively. Male rolled edge rib 5 and female rolled edge rib 6 are respectively provided on the top of male rib 3 and female rib 4. Male rolled edge rib 5 and female rolled edge rib 6 are interconnected. Line groove 7 and mortise head 8 are provided in the middle of male rib 3 and female rib 4. The mortise and tenon support 2 includes a support connecting plate 21 and a mortise and tenon vertical plate 22 located on the upper part of the support connecting plate 21 and vertically connected to the support connecting plate 21. Mortise and tenon grooves are provided on both sides of the mortise and tenon grooves and the mortise head 8 of the metal roof panel body 1 are inserted into each other. The mortise and tenon support 2 is telescopically slidably connected to the line groove 7 and mortise head 8 of the metal roof panel body 1.

[0054] like Figures 4-5 As shown, the mortise 8 is composed of an upper wall panel 81, a side upright panel 82, and a lower wall panel 83. The upper wall panel 81 and the lower wall panel 83 are respectively vertically connected to both sides of the side upright panel 82 and form a protruding mortise 8 on the metal roof panel body 1. A grooved wall panel 71 on the same side as the upper wall panel 81 is provided between the upper wall panel 81 and the male rolled edge rib 5 or the female rolled edge rib 6. The upper wall panel 81 and the grooved wall panel 71 are connected at their ends to form a linear groove 7 extending along the longitudinal line of the metal roof panel body 1. The opening of the linear groove 7 faces the opposite direction to the opening of the mortise 8.

[0055] In one case, such as Figures 6-10 As shown, the mortise and tenon support 2 consists of a mortise and tenon plate 22, a male rib mortise and tenon 23, a female rib mortise and tenon 24, and a support connecting plate 21. The male rib mortise and tenon 23 is located on the upper part of one side of the mortise and tenon support 2, and is composed of a mortise and tenon plate 22, a first upper wall plate 25, and a first lower wall plate 26 stamped and folded from the mortise and tenon plate 22. The male rib mortise and tenon 23 is inserted into the male rib 3 mortise and tenon 8 of the metal roof panel body 1. The female rib mortise and tenon 24 is located on both ends of the other side of the mortise and tenon support 2, and is composed of a mortise and tenon plate 22, a male rib mortise and tenon 23, a female rib mortise and tenon 24, and a support connecting plate 21. The second lower wall panel 28 is composed of the upper wall panel 27 and the tenon and groove upright plate 22, which are stamped and folded. The female rib tenon and groove 24 is inserted and connected to the female rib 4 mortise and tenon 8 of the metal roof panel body 1. The support connecting plate 21 and the female rib tenon and groove 24 are located on the same side of the tenon and groove upright plate 22. The support connecting plate 21 is provided with screw connection holes 29. The support connecting plate 21 is connected to the steel purlin 10 by screws 9. The tenon and groove support 2 is made of metal plate with a thickness of 1 to 2 mm. The support pad 11 can be installed between the support connecting plate 21 and the steel purlin 10 for insulation.

[0056] In another case, such as Figure 11 , Figure 12 As shown, the mortise and tenon support 2 consists of a mortise and tenon plate 22, a male rib mortise and tenon 23, a female rib mortise and tenon 24, and a support connecting plate 21. The male rib mortise and tenon 23 is located on the upper part of one side of the mortise and tenon support 2, and is composed of the mortise and tenon plate 22, a first upper wall plate 25, and a first lower wall plate 26. The male rib mortise and tenon 23 is inserted into the male rib 3 mortise and tenon 8 of the metal roof panel body 1. The female rib mortise and tenon 24 is located on the other side of the mortise and tenon support 2, and is composed of the mortise and tenon plate 22, a second upper wall plate 27, and a second lower wall plate 28. The female rib mortise and tenon 24 is mortised into the female rib 4 of the metal roof panel body 1. The head 8 is plugged in; the first upper wall plate 25, the second upper wall plate 27, the first lower wall plate 26, and the second lower wall plate 28 are respectively perpendicular to the tenon groove upright plate 22 and are set along the same length as the tenon groove upright plate 22; the support connecting plate 21 and the female rib tenon groove 24 are located on the same side of the tenon groove upright plate 22, and the support connecting plate 21 is provided with screw connection holes 29. The support connecting plate 21 is connected to the steel purlin 10 by screws 9; the tenon groove support 2 is cut from a thick profile with a wall thickness of 2 mm to 30 mm, which is extruded from aluminum alloy or steel; a support pad 11 can be set between the support connecting plate 21 and the steel purlin 10 for insulation.

[0057] The male rolled edge rib 5 and the female rolled edge rib 6 are connected to each other by rolling, snap-locking or welding to connect two adjacent metal roof panel bodies 1 to form an integral metal roof.

[0058] The metal roof panel body 1 is formed by pressing a metal sheet with a thickness of 0.5 mm to 0.8 mm.

[0059] The specific implementation process is as follows: Figures 13-19The following installation steps are adopted: the first tenon support 2 of the metal roof edge is positioned and installed; the first metal roof panel body 1 is installed; the second tenon support 2 is installed; the second metal roof panel body 1 is installed; the male rolled edge rib 5 and the female rolled edge rib 6 of the two adjacent metal roof panel bodies 1 are connected; the connecting tenon support 2 and the metal roof panel body 1 are installed alternately; the male rolled edge rib 5 and the female rolled edge rib 6 are mechanically rolled, interlocked or welded together.

[0060] When installing the tenon and mortise support 2, the male rib tenon 23 of the tenon and mortise support 2 is pushed flat on one side to insert the male rib 3 mortise 8 of the metal roof panel body 1 into the male rib tenon 23 of the tenon and mortise support 2. Then, the support connecting plate 21 of the tenon and mortise support 2 is fixed to the steel purlin 10 by screws 9. When installing the second metal roof panel body 1, the female rolled edge rib 6 of the second metal roof panel body 1 is fastened at an angle in the width direction to the upper part of the male rolled edge rib 5 of the first metal roof panel body 1 that has been installed in place. Then, the second metal roof panel body 1 is rotated to be horizontal. Finally, the second metal roof panel body 1 is pushed flat to place the female rib 4 mortise 8 into the female rib tenon 24 of the tenon and mortise support 2 that has been fixed and installed.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sided mortise and tenon joint between a metal roof panel and a support, comprising multiple interconnected metal roof panel bodies, characterized in that: It also includes a tenon and mortise support. The connection between two adjacent metal roof panels is a male rib and a female rib, respectively. The top of the male rib and the female rib is provided with a male rolled edge rib and a female rolled edge rib, respectively. The male rolled edge rib and the female rolled edge rib are connected to each other. The middle of the male rib and the female rib is provided with a line groove and a mortise. The tenon and mortise support includes a support connecting plate and a tenon and mortise vertical plate located on the upper part of the support connecting plate and vertically connected to the support connecting plate. The tenon and mortise vertical plate is provided with tenons on both sides. The tenons and mortises are inserted into the mortise of the metal roof panel body. The tenon and mortise support is telescopically slidably connected to the line groove and mortise of the metal roof panel body. The mortise is composed of an upper wall panel, a side panel, and a lower wall panel. The upper and lower wall panels are vertically connected to both sides of the side panel and form protruding mortices on the metal roof panel body. A grooved wall panel on the same side as the upper wall panel is provided between the upper wall panel and the male or female rolled edge rib. The upper wall panel and the grooved wall panel are connected at their ends to form a linear groove extending along the longitudinal line of the metal roof panel body. The opening of the linear groove faces the opposite direction to the opening of the mortise.

2. The metal roof panel and support double-sided tenon and mortise connection node according to claim 1, characterized in that: The mortise and tenon support consists of a mortise and tenon plate, a male rib mortise and tenon, a female rib mortise and tenon, and a support connecting plate. The male rib mortise and tenon is located on the upper part of one side of the mortise and tenon support and is composed of a mortise and tenon plate, a first upper wall plate, and a first lower wall plate that is stamped and folded from the mortise and tenon plate. The male rib mortise and tenon is inserted into the male rib mortise of the metal roof panel body. The female rib mortise and tenon is located on both ends of the other side of the mortise and tenon support and is composed of a mortise and tenon plate, a second upper wall plate, and a second lower wall plate that is stamped and folded from the mortise and tenon plate. The female rib mortise and tenon is inserted into the female rib mortise of the metal roof panel body. The support connecting plate is located on the same side of the mortise and tenon plate as the female rib mortise and tenon. The support connecting plate is provided with screw connection holes and is connected to the steel purlin with screws. The mortise and tenon support is made of a 1 to 2 mm thick metal plate.

3. The mortise and tenon joint between a metal roof panel and its support according to claim 1, characterized in that: The mortise and tenon support consists of a mortise and tenon stand, a male rib mortise and tenon, a female rib mortise and tenon, and a support connecting plate. The male rib mortise and tenon is located on the upper part of one side of the mortise and tenon support and is composed of a mortise and tenon stand, a first upper wall panel, and a first lower wall panel. The male rib mortise and tenon is inserted into the male rib mortise of the metal roof panel body. The female rib mortise and tenon is located on the other side of the mortise and tenon support and is composed of a mortise and tenon stand, a second upper wall panel, and a second lower wall panel. The female rib mortise and tenon is connected to the metal roof panel body. The roof panel body is connected by a mortise and tenon joint; the first upper wall panel, the second upper wall panel, the first lower wall panel, and the second lower wall panel are respectively perpendicular to the tenon joint plate and are set along the same length as the tenon joint plate; the support connecting plate and the tenon joint of the mortise and tenon joint are located on the same side of the tenon joint plate, the support connecting plate is provided with screw connection holes, and the support connecting plate is connected to the steel purlin with screws; the tenon joint support is cut from a thick profile with a wall thickness of 2 mm to 30 mm, which is extruded from aluminum alloy or steel.

4. The mortise and tenon joint between a metal roof panel and its support according to claim 1, characterized in that: The male and female rolled edge ribs are connected to each other by rolled edge, snap-locking, or welding to connect two adjacent metal roof panels to form an integral metal roof.

5. The mortise and tenon joint between a metal roof panel and its support according to claim 1, characterized in that: The metal roof panel body is formed by pressing a metal sheet with a thickness of 0.5 mm to 0.8 mm.

6. The double-sided tenon-and-mortise connection node between a metal roof panel and a support according to any one of claims 1-5, characterized in that: The following installation steps are adopted: positioning and installing the first tenon support at the edge of the metal roof, installing the first metal roof panel body, installing the second tenon support, installing the second metal roof panel body, connecting the male and female rolled edge ribs of the two adjacent metal roof panel bodies, alternately installing the connecting tenon support and the metal roof panel body, and mechanically rolling, interlocking, or welding the male and female rolled edge ribs.

7. The connection and installation of a metal roof panel and a tenon-and-mortise support according to claim 6, characterized in that: During the installation of the mortise and tenon support, the male rib mortise of the mortise and tenon support is pushed flat on one side to insert the male rib mortise of the metal roof panel body into the mortise and tenon support male rib mortise and tenon support. Then, the support connecting plate of the mortise and tenon support is fixed to the steel purlin with screws. During the installation of the second metal roof panel body, the female rolled edge rib of the second metal roof panel body is fastened at an angle in the width direction to the upper part of the male rolled edge rib of the first metal roof panel body that has been installed in place. Then, the second metal roof panel body is rotated to a horizontal position. Finally, the second metal roof panel body is pushed flat to place the female rib mortise into the mortise and tenon joint of the fixed mortise and tenon support female rib mortise and tenon.

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