Steel construction anti-leakage roof system and construction method

Abstract

A kind of steel structure anti-leakage roof system and construction method, the steel structure engineering field, system includes roof ridge and roof, roof is provided with roof outer plate, roof ridge is provided with inner ridge tile, and the both sides of inner ridge tile are connected with roof outer plate by open nail connection;The both sides of inner ridge tile are also connected with wing tile by open nail;The upper portion of inner ridge tile is provided with outer ridge tile, and the both sides of outer ridge tile are buckled with wing tile, and outer ridge tile covers the open nail of all inner ridge tile connecting place;Open nail connection is not used at the butt joint of adjacent roof outer plate, and recess is set at the butt joint of adjacent roof outer plate, and the recess is inserted with the drainage groove of the shape of U.The roof system of the application adopts double-layer ridge tile structure, covers open nail, can prevent open nail and nail hole corrosion for a long time, and the deformation or rainwater leakage phenomenon occurs at decayed place;Roof outer plate is embedded with drainage groove, and the seepage rainwater is discharged, to prevent rainwater from directly leaking into the insulation material, reduce the insulation effect and service life, prevent long-term use from indoor water leakage.

Description

Technical Field

[0001] This invention belongs to the field of steel structure engineering, specifically relating to a steel structure anti-leakage roofing system and its construction method. Background Technology

[0002] In steel structure buildings, the roof, as the uppermost enclosure component, is one of the key parts of the entire building. It is used to resist wind, frost, rain, snow, solar radiation, and temperature changes to ensure a good working environment for the building's interior over the long term. To meet the long-term use requirements of the roof, reduce maintenance and repair frequency, and extend its service life, corrosion prevention and long-term leak resistance at the connection between the steel structure roof and the ridge have always been technical challenges.

[0003] Existing technology uses metal nails to fix the ridge and the corrugated steel roof panels. With changes in temperature and environment, the exposed nails at the joints between the ridge tiles and roof panels, as well as at the joints between adjacent roof panels, lead to rust and enlargement of the nail holes, resulting in leaks. For example, patents CN209339422U (a ridge joint reinforcement structure) and CN112482639A (a prefabricated roof) both use exposed nails, leading to corrosion and leaks around the nails.

[0004] Furthermore, thermal expansion and contraction of the roof panels, or wind forces, can cause gaps to appear at the exposed nail joints, accelerating corrosion and leakage. Therefore, leakage is inevitable with prolonged use, affecting the lifespan of the roof. Gaps and corrosion can also cause unevenness and bulging at the panel joints, potentially leading to instability in other related structures. In addition, water can accumulate in the joints between roof panels, causing seepage. Prolonged water accumulation can also lead to corrosion, widening the joints and resulting in severe leakage, ultimately affecting the insulation performance of the thermal insulation material. Summary of the Invention

[0005] This invention addresses the problems of corrosion and leakage at exposed nail points in existing technologies, leading to roof leaks over long-term use; unevenness and bulging at roof panel joints caused by gaps and corrosion, which in turn cause instability in other related structures and affect service life; and water accumulation and corrosion leakage in the joints between roof panels, affecting the insulation effect of the insulation material. This invention provides a steel structure anti-leakage roofing system and construction method, offering advantages such as long-term corrosion and leakage prevention, and good insulation performance. This metal roofing system uses a double-layer ridge tile structure to cover the exposed nails connecting the ridge tiles; it employs built-in drainage channels in the roof panels to drain leaking rainwater from gaps, preventing it from seeping into the insulation material and affecting its insulation effect and service life. The specific technical solution is as follows:

[0006] A steel structure anti-leakage roofing system includes a ridge and a roof. The roof is provided with several butt-jointed roof panels 5, and the ridge is provided with several butt-jointed inner ridge tiles 6. The inner ridge tiles 6 are connected to the roof panels 5 on both sides by exposed nails. The inner ridge tiles 6 are also connected to wing tiles 7 on both sides by exposed nails. An outer ridge tile 8 is provided above the inner ridge tiles 6. The outer ridge tile 8 is fastened to the wing tiles 7 on both sides. The outer ridge tile 8 covers all the exposed nails at the joints of the inner ridge tiles 6 and the exposed nails on both sides of the inner ridge tiles 6. The joints of adjacent roof panels 5 are not connected by exposed nails. The joints of adjacent roof panels 5 are provided with mutually matching channels 5.2. The top surface of the channel (5.2) is "V" shaped, and a "U" shaped drainage channel 5.3 is inserted into the channel 5.2.

[0007] In the above technical solution, the system also includes a steel beam frame 1, and the roof also includes an inner roof panel 2 and purlins 3. The inner roof panel 2 is fixed to the steel beam frame 1 by a ridge bracket and aluminum rivets; the inner roof panel 2 is fixed to the outer roof panel 5 by the purlins 3.

[0008] In the above technical solution, a thermal insulation layer 4 is also sandwiched between the inner roof panel 2 and the outer roof panel 5.

[0009] In the above technical solution, the joints of adjacent inner ridge tiles 6 are connected by a number of ridge tile aluminum rivets 6.1; the two sides of the inner ridge tiles 6 are connected to the roof outer panel 5 by a number of roof aluminum rivets 5.1.

[0010] In the above technical solution, the wing tile 7 is arc-shaped, and the arc shape has deformation elasticity. An "L"-shaped connecting piece is welded to the arc-shaped bottom surface of the wing tile 7. The connecting piece has nail holes for passing through the roof aluminum rivets 5.1 to fix the wing tile 7 to the inner ridge tile 6. A fastening mechanism is provided on the outer side of the arc of the wing tile 7. The outer ridge tile 8 is a semi-circular ridge tile. The top of the outer ridge tile 8 is provided with an inverted "V"-shaped tile tip. Hooks are provided on both sides of the outer ridge tile 8. The hooks of the outer ridge tile 8 are engaged with the fastening mechanism of the wing tile 7.

[0011] In the above technical solution, the wing tile 7 is a single piece with several intervals, or the wing tile 7 is a single strip.

[0012] In the above technical solution, after the tip of the outer ridge tile 8 is pressed, the lower opening of the outer ridge tile 8 has the deformation elasticity of expansion and recovery; the outer ridge tile 8 is made of anti-corrosion metal, or elastic plastic, or metal coated with an anti-corrosion layer; the thickness of the outer ridge tile 8 is no more than 1.5mm.

[0013] In the above technical solution, the "U"-shaped drainage channel 5.3 is provided with a sealing plate 5.4 at the ridge end to seal the ridge end port of the "U"-shaped drainage channel 5.3; the "U"-shaped drainage channel 5.3 is open at the eaves end.

[0014] In the above technical solution, the top surface of the "U"-shaped drainage channel 5.3 is fully open or semi-open; the sealing plate 5.4 and the "U"-shaped drainage channel 5.3 are integrally formed, fused or welded; the "U"-shaped drainage channel 5.3 is made of antifreeze plastic material, anti-corrosion metal material or metal coated with anti-corrosion layer.

[0015] A construction method for a steel structure waterproof roofing system, comprising the following steps: (The method utilizes the assembly and construction of the aforementioned steel structure waterproof roofing system.)

[0016] Step 1: Fix the inner roof panel 2 to the steel beam frame 1 in sequence using ridge brackets and aluminum rivets. Fix the purlins 3 to the inner roof panel 2. Connect the thermal insulation layer 4 and the outer roof panel 5 and fix them to the purlins 3. Before connecting the adjacent outer roof panel 5, place a "U"-shaped drainage channel 5.3 at the joint.

[0017] Step 2: Overlap the edge of the inner ridge tile 6 onto the ridge end edge of the outer roof panel 5, and overlap the wing tile 7 onto the edge of the inner ridge tile 6. Use aluminum rivets to fix the inner ridge tile 6 and the wing tile 7 to the outer roof panel 5 at the same time.

[0018] Step 3: Place the outer ridge tile 8 above the inner ridge tile 6, so that the hooks on both sides of the outer ridge tile 8 are in contact with the outer edge of the wing tile 7. Then press the tip of the outer ridge tile 8 to deform and enlarge the lower opening of the outer ridge tile 8, and make the hooks of the outer ridge tile 8 engage with the fastener of the wing tile 7. At the same time, the lower opening of the outer ridge tile 8 springs back and shrinks, completing the installation of the outer ridge tile 8. The two ends of the ridge tile are sealed with roof gable panels to prevent water from entering at both ends.

[0019] The steel structure anti-leakage roofing system and construction method of the present invention have the following advantages compared with the prior art:

[0020] I. Existing ridge tile connections all use exposed aluminum studs, meaning the ridge tiles are connected with aluminum studs. In rainy or snowy weather, water and rust accumulate at these exposed studs. Over time, the rusted stud holes enlarge, leading to leaks and affecting the insulation layer's performance. In heavy rain or storms, the interior may even leak directly. This invention's roofing system is designed so that the external ridge tiles effectively cover the aluminum studs, preventing rain and snow from reaching the exposed studs. This prevents rust and leaks over the long term, extending the ridge tile's lifespan.

[0021] Second, similarly, existing technologies connect ridge tiles to roof panels using exposed aluminum studs, i.e., roof aluminum studs. When exposed to rain or snow, water and rust can accumulate at these stud locations. Over time, the rusted stud holes enlarge, leading to leaks and affecting the insulation layer's performance. In severe rainstorms, the interior may even leak directly. This invention's roof system, designed to cover the roof aluminum studs along with the ridge tiles, effectively prevents rust and leaks over the long term.

[0022] Third, in order to ensure that the outer ridge tile does not affect the elasticity of the roof ridge, the roof system of this invention is designed with arc-shaped wing tiles. On the one hand, the cylindrical locking buckle of the arc-shaped wing tile can fix the outer ridge tile, preventing it from falling off or shifting when encountering strong winds or vibrations; on the other hand, the deformation elasticity of the arc-shaped wing tile can match the deformation elasticity of the outer ridge tile, thus having a certain degree of elasticity and not affecting the lateral elasticity of the inner ridge tile. When encountering thermal expansion and contraction of the roof, it can also have good adaptability, effectively ensuring that the roof system does not break or twist.

[0023] Fourth, the roofing system of the present invention has an L-shaped connecting piece welded under the arc surface of the wing tile. On the one hand, the connecting piece has nail holes, which can be fixed to the outer roof panel together with the inner ridge tile by aluminum rivets, without the need to use aluminum rivets for additional fixing. On the other hand, the wing tile is placed inside the outer ridge tile, which can effectively prevent the outer ridge tile from being fixed with exposed nails, and completely eliminate the corrosion of nail holes in the outer ridge tile.

[0024] Fifth, the L-shaped connecting piece of the roofing system of the present invention can also block rain and snow, effectively preventing rain and snow from being blown in by the wind and corroding the aluminum rivets on the roof, further improving the anti-leakage protection and extending the service life of the roofing system.

[0025] VI. The wing tiles of the roofing system of the present invention are either single pieces with several intervals or a whole strip. The single pieces with intervals are more cost-effective and have stronger adjustability and adaptability; the whole strip has better wind and rain protection and higher installation precision.

[0026] 7. The roofing system of the present invention has an inverted V-shaped tile tip at the top of the outer ridge tile. This design can improve the deformation elasticity of the outer ridge tile, make it easier to install and disassemble, and improve the lateral expansion and contraction adaptability of the outer ridge tile during use.

[0027] 8. The ridge tiles of the roofing system of this invention can be easily disassembled, assembled, and replaced, reducing maintenance difficulty and costs. The roofing system is also more aesthetically pleasing after the addition of ridge tiles, thus improving its market competitiveness.

[0028] 9. The two ends of the ridge tiles (inner ridge tiles and outer ridge tiles) of the roofing system of the present invention are sealed with roof gable panels without exposed nails to prevent water from entering at both ends or birds from entering.

[0029] 10. In the roof system design of this invention, the joints between adjacent roof panels do not use exposed nails. Instead, a matching groove is provided in the middle of the joint, and a "U"-shaped drainage channel is inserted into the groove. The top surface of the groove is "V"-shaped to prevent water seepage from flowing horizontally along the upper arm, ensuring that all seepage flows into the "U"-shaped drainage channel along the gap. Since the roof is sloping, rainwater flows directly down the slope of the "U"-shaped drainage channel and out through the eaves, avoiding direct rainwater seepage into the house, which could damage the insulation layer or cause indoor leaks. Because the roof is sloping and the seepage volume in the gaps is limited, the relatively small cross-section of the "U"-shaped drainage channel is sufficient to meet drainage needs without affecting the overall stability and insulation of the roof structure.

[0030] 11. The ridge end of the "U"-shaped drainage channel is equipped with a sealing plate, which can prevent air from entering and reducing the insulation performance; on the other hand, it can prevent the "U"-shaped drainage channel from falling off the eaves.

[0031] 12. The top surface of the "U"-shaped drainage channel can be fully open or partially open. Fully open channels have lower costs, while partially open channels have more stable structural strength.

[0032] Thirteen, the roof system construction method of the present invention is a special construction method for the roof system design of the present invention, which clarifies the installation method of wing tiles, outer ridge tiles and "U"-shaped drainage channels. According to this construction method, the roof can be assembled and the expected effect can be achieved.

[0033] In summary, the roofing system of this invention adopts a double-layer ridge tile structure to cover exposed nails, which can prevent corrosion of exposed nails and nail holes, deformation at rotten areas, or rainwater leakage for a long time; the roof outer panel has built-in drainage channels to drain rainwater that seeps through gaps, preventing rainwater from directly leaking into the insulation material, reducing the insulation effect and service life, and preventing indoor water leakage after long-term use. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the gable end face of a steel structure anti-leakage roof system according to Embodiment 1 of the present invention;

[0035] Figure 2 This is a top view schematic diagram of the connection between the inner ridge tile and the outer roof panel of a steel structure anti-leakage roof system according to Embodiment 1 of the present invention;

[0036] Figure 3 This is a top view schematic diagram of a steel structure anti-leakage roof system according to Embodiment 1 of the present invention;

[0037] Figure 4 This is a side view of the wing tiles of a steel structure anti-leakage roofing system according to Embodiment 1 of the present invention;

[0038] Figure 5 This is a top view of a single-piece winged tile of a steel structure anti-leakage roofing system according to Embodiment 1 of the present invention;

[0039] Figure 6 This is a roof end view of the roof panel joint of a steel structure waterproof roofing system according to Embodiment 1 of the present invention.

[0040] Figure 7 This is a view of the eaves end of a steel structure anti-leakage roof system according to Embodiment 1 of the present invention, after the roof outer panels are joined and a "U"-shaped drainage channel is installed.

[0041] Figure 8 This is a front view (from the eaves end to the ridge end) of a steel structure anti-leakage roof system according to Embodiment 1 of the present invention.

[0042] Figure 9 This is a top view of a U-shaped drainage channel of a steel structure anti-leakage roof system according to Embodiment 1 of the present invention;

[0043] Figure 10 This is a top perspective view of the roof panel joint of a steel structure anti-leakage roofing system according to Embodiment 1 of the present invention;

[0044] Figure 11 This is a top view of a strip-shaped wing tile of a steel structure anti-leakage roofing system according to Embodiment 2 of the present invention;

[0045] Figure 12 This is a front view of a U-shaped drainage channel (top surface is semi-open) of a steel structure anti-leakage roofing system according to Embodiment 2 of the present invention.

[0046] Figure 13 This is a front view (from the eaves end to the ridge end) of a steel structure anti-leakage roof system according to Embodiment 2 of the present invention.

[0047] Figure 1-13 In the middle: 1-steel beam frame, 2-inner roof panel, 3-purlin, 4-thermal insulation layer, 5-outer roof panel, 6-inner ridge tile, 7-wing tile, 8-outer ridge tile; 5.1-aluminum rivets for the roof, 5.2-channel, 5.3-"U" shaped drainage channel, 5.4-sealing plate; 6.1-aluminum rivets for the ridge tile. Detailed Implementation

[0048] The following are specific implementation cases and appendices. Figure 1-13 The present invention will be further described, but the present invention is not limited to these embodiments.

[0049] Example 1

[0050] A steel structure waterproof roofing system, such as Figure 1-10As shown, the system includes a steel beam frame 1, a ridge, and a roof. The roof is provided with an inner roof panel 2, purlins 3, a thermal insulation layer 4, and an outer roof panel 5 from bottom to top. The inner roof panel 2 is fixed to the steel beam frame 1 by ridge brackets and aluminum rivets. Purlins 3 are installed on the inner roof panel 2. The purlins 3 are fixed to the thermal insulation layer 4 and the outer roof panel 5. That is, a thermal insulation layer 4 is also sandwiched between the inner roof panel 2 and the outer roof panel 5. Several mating outer roof panels 5 are joined together to form the top surface of the roof. The ridge is provided with several mating inner ridge tiles 6. The mating points of adjacent inner ridge tiles 6 are connected by several ridge tile aluminum rivets 6.1. The two sides of the inner ridge tiles 6 are connected to the outer roof panel 5 by several roof aluminum rivets 5.1. The two sides of the inner ridge tiles 6 are also connected to wing tiles 7 by roof aluminum rivets 5.1. The wing tiles 7 are arc-shaped and have deformation elasticity. An "L"-shaped connecting piece is welded to the arc-shaped bottom surface of the wing tile 7. The connecting piece has nail holes for passing through the roof aluminum rivets 5.1 to fix the wing tile 7 to the inner ridge tiles 6. The outer side of the arc of the wing tile 7 is provided with a fastener. Above the inner ridge tiles 6 is an outer ridge tile 8. The outer ridge tile 8 is a semi-circular ridge tile. The top of the outer ridge tile 8 is provided with an inverted "V"-shaped tile tip. The two sides of the outer ridge tile 8 are provided with hooks. The hooks of the outer ridge tile 8 are engaged with the fasteners of the wing tile 7, so that the outer ridge tile 8 covers all the ridge tile aluminum rivets 6.1 and the roof aluminum rivets 5.1.

[0051] Where adjacent roof panels 5 are joined, no exposed nails are used for connection. At the joint of adjacent roof panels 5, there are grooves 5.2 that fit each other. The top surface of the groove 5.2 is "V" shaped. A "U" shaped drainage channel 5.3 is inserted into the groove. A sealing plate 5.4 is set at the ridge end of the "U" shaped drainage channel 5.3 to seal the ridge end port of the "U" shaped drainage channel 5.3. The "U" shaped drainage channel 5.3 is open at the eaves end.

[0052] The construction method of the above-mentioned steel structure anti-leakage roof system includes the following steps:

[0053] Step 1: Fix the inner roof panel 2 to the steel beam frame 1 in sequence using ridge brackets and aluminum rivets. Fix the purlins 3 to the inner roof panel 2. Connect the thermal insulation layer 4 and the outer roof panel 5 and fix them to the purlins 3. Before connecting the adjacent outer roof panel 5, place a "U"-shaped drainage channel 5.3 at the joint.

[0054] Step 2: Overlap the edge of the inner ridge tile 6 onto the ridge end edge of the outer roof panel 5, and overlap the wing tile 7 onto the edge of the inner ridge tile 6. Use aluminum rivets to fix the inner ridge tile 6 and the wing tile 7 to the outer roof panel 5 at the same time.

[0055] Step 3: Place the outer ridge tile 8 above the inner ridge tile 6, so that the hooks on both sides of the outer ridge tile 8 are in contact with the outer edge of the wing tile 7. Then press the tip of the outer ridge tile 8 to deform and enlarge the lower opening of the outer ridge tile 8, and make the hooks of the outer ridge tile 8 engage with the fastener of the wing tile 7. At the same time, the lower opening of the outer ridge tile 8 springs back and shrinks, completing the installation of the outer ridge tile 8. The two ends of the ridge tile are sealed with roof gable panels to prevent water from entering at both ends.

[0056] In this embodiment, the wing tiles 7 are single pieces spaced apart. The outer ridge tiles 8 are made of corrosion-resistant metal and have a thickness of 0.8 mm. When the tips of the outer ridge tiles 8 are pressed, the lower opening of the outer ridge tiles 8 has the elasticity to expand and recover. The top surface of the "U"-shaped drainage groove 5.3 is fully open; the "U"-shaped drainage groove 5.3 is made of corrosion-resistant metal, and the sealing plate 5.4 and the "U"-shaped drainage groove 5.3 are pre-welded together.

[0057] The roof system in this embodiment adopts a double-layer ridge tile structure to cover exposed nails, which can prevent corrosion of exposed nails and nail holes, deformation at rotten areas, or rainwater leakage in the long term. The roof outer panel has built-in drainage channels to drain rainwater that seeps through gaps, preventing rainwater from directly leaking into the insulation material, reducing the insulation effect and service life, and preventing indoor water leakage after long-term use.

[0058] Example 2

[0059] This embodiment describes a steel structure waterproof roofing system similar to the roofing system in Embodiment 1. The difference between this embodiment and the roofing system in Embodiment 1 is as follows:

[0060] In this embodiment, the wing tile 7 is a single, integral strip, such as... Figure 11 As shown. The outer ridge tile 8 is made of elastic plastic and is 1mm thick. The top surface of the "U"-shaped drainage groove 5.3 is semi-open, as shown. Figure 12 and Figure 13 As shown; the "U"-shaped drainage channel 5.3 is made of antifreeze plastic, and the sealing plate 5.4 is integrally formed with the "U"-shaped drainage channel 5.3.

[0061] The roof system in this embodiment adopts a double-layer ridge tile structure to cover exposed nails, which can prevent corrosion of exposed nails and nail holes, deformation at rotten areas, or rainwater leakage in the long term. The roof outer panel has built-in drainage channels to drain rainwater that seeps through gaps, preventing rainwater from directly leaking into the insulation material, reducing the insulation effect and service life, and preventing indoor water leakage after long-term use.

[0062] Example 3

[0063] This embodiment describes a steel structure waterproof roofing system similar to the roofing system in Embodiment 1. The difference between this embodiment and the roofing system in Embodiment 1 is as follows:

[0064] The outer ridge tile 8 is made of metal with an anti-corrosion coating, and its thickness is 1.5mm. The "U"-shaped drainage channel 5.3 is also made of metal with an anti-corrosion coating. The sealing plate 5.4 and the "U"-shaped drainage channel 5.3 are integrally formed and then coated with an anti-corrosion coating.

[0065] The roof system in this embodiment adopts a double-layer ridge tile structure to cover exposed nails, which can prevent corrosion of exposed nails and nail holes, deformation at rotten areas, or rainwater leakage in the long term. The roof outer panel has built-in drainage channels to drain rainwater that seeps through gaps, preventing rainwater from directly leaking into the insulation material, reducing the insulation effect and service life, and preventing indoor water leakage after long-term use.

[0066] Example 4

[0067] This embodiment describes a steel structure waterproof roofing system similar to the roofing system in Embodiment 1. The difference between this embodiment and the roofing system in Embodiment 1 is as follows:

[0068] In this embodiment, the wing tile 7 is a single, integral strip. The outer ridge tile 8 is made of elastic plastic and has a thickness of 1.2mm. The U-shaped drainage channel 5.3 is made of corrosion-resistant metal, and the sealing plate 5.4 and the U-shaped drainage channel 5.3 are integrally formed.

[0069] The roof system in this embodiment adopts a double-layer ridge tile structure to cover exposed nails, which can prevent corrosion of exposed nails and nail holes, deformation at rotten areas, or rainwater leakage in the long term. The roof outer panel has built-in drainage channels to drain rainwater that seeps through gaps, preventing rainwater from directly leaking into the insulation material, reducing the insulation effect and service life, and preventing indoor water leakage after long-term use.

Claims

1. A steel structure anti-leakage roofing system, comprising a ridge and a roof, wherein the roof is provided with a plurality of butt-jointed roof outer panels (5), and the ridge is provided with a plurality of butt-jointed inner ridge tiles (6), wherein the inner ridge tiles (6) are connected to the roof outer panels (5) on both sides by exposed nails; characterized in that, The inner ridge tile (6) is connected to the wing tile (7) on both sides by exposed nails. An outer ridge tile (8) is provided above the inner ridge tile (6). The outer ridge tile (8) is fastened to the wing tile (7) on both sides. The outer ridge tile (8) covers all the exposed nails at the joints of the inner ridge tiles (6) and the exposed nails on both sides of the inner ridge tiles (6). The joints of the adjacent roof panels (5) are not connected by exposed nails. The joints of the adjacent roof panels (5) are provided with matching channels (5.2). The top surface of the channel (5.2) is "V" shaped. The channel (5.2) contains a "U" shaped drainage channel (5.3). The wing tile (7) is arc-shaped and has deformation elasticity. An "L"-shaped connecting piece is welded to the arc-shaped bottom surface of the wing tile (7). The connecting piece has nail holes for passing through the roof aluminum rivets (5.1) to fix the wing tile (7) to the inner ridge tile (6). A fastener is provided on the outer arc of the wing tile (7). The outer ridge tile (8) is a semi-circular ridge tile. The top of the outer ridge tile (8) is provided with an inverted "V" shaped tile tip. Hooks are provided on both sides of the outer ridge tile (8). The hooks of the outer ridge tile (8) are engaged with the fastener of the wing tile (7). The system also includes a steel beam frame (1), and the roof also includes an inner roof panel (2) and purlins (3). The inner roof panel (2) is fixed to the steel beam frame (1) by a ridge bracket and aluminum rivets; the inner roof panel (2) is fixed to the outer roof panel (5) by the purlins (3).

2. The steel structure anti-leakage roofing system according to claim 1, characterized in that, A thermal insulation layer (4) is also sandwiched between the inner roof panel (2) and the outer roof panel (5).

3. The steel structure anti-leakage roofing system according to claim 1, characterized in that, The joints of adjacent inner ridge tiles (6) are connected by a number of ridge tile aluminum rivets (6.1); the two sides of the inner ridge tiles (6) are connected to the roof outer panel (5) by a number of roof aluminum rivets (5.1).

4. The steel structure anti-leakage roofing system according to claim 1, characterized in that, The wing tile (7) is a single piece with several intervals, or the wing tile (7) is a whole strip.

5. A steel structure anti-leakage roofing system according to claim 1, characterized in that, When the tip of the outer ridge tile (8) is pressed, the lower opening of the outer ridge tile (8) has expansion and recovery deformation elasticity; the outer ridge tile (8) is made of anti-corrosion metal, or elastic plastic, or metal coated with anti-corrosion layer; the thickness of the outer ridge tile (8) is not greater than 1.5mm.

6. A steel structure anti-leakage roofing system according to claim 1, characterized in that, The "U"-shaped drainage channel (5.3) is provided with a sealing plate (5.4) at the ridge end to seal the ridge end port of the "U"-shaped drainage channel (5.3); the "U"-shaped drainage channel (5.3) is open at the eaves end.

7. A steel structure anti-leakage roofing system according to claim 6, characterized in that, The top surface of the "U"-shaped drainage channel (5.3) is fully open or partially open; the sealing plate (5.4) and the "U"-shaped drainage channel (5.3) are integrally formed, fused or welded; the "U"-shaped drainage channel (5.3) is made of antifreeze plastic material, anticorrosive metal material or metal coated with anticorrosive layer.

8. A construction method for a steel structure anti-leakage roofing system, applied to the assembly and construction of the steel structure anti-leakage roofing system as described in any one of claims 1-7, characterized in that, The method includes the following steps: Step 1: Fix the inner roof panel (2) to the steel beam frame (1) in sequence using ridge brackets and aluminum rivets. Fix the purlins (3) to the inner roof panel (2). Connect the thermal insulation layer (4) and the outer roof panel (5) and fix them to the purlins (3). Before connecting the adjacent outer roof panel (5), place a "U"-shaped drainage channel (5.3) at the joint. Step 2: Place the edge of the inner ridge tile (6) on the ridge end edge of the roof outer panel (5), place the wing tile (7) on the edge of the inner ridge tile (6), and use aluminum rivets to fix the inner ridge tile (6) and the wing tile (7) to the roof outer panel (5) at the same time; Step 3: Place the outer ridge tile (8) above the inner ridge tile (6), so that the hooks on both sides of the outer ridge tile (8) are in contact with the fastening point of the outer edge of the wing tile (7), then press the tip of the outer ridge tile (8) to deform the outer ridge tile (8) and expand the lower opening, and make the hooks of the outer ridge tile (8) fasten with the fastening point of the wing tile (7), while the lower opening of the outer ridge tile (8) rebounds and shrinks, completing the installation of the outer ridge tile (8). The two ends of the ridge tile are sealed with roof gable panels to prevent water from entering at both ends.

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