Light steel large-span roof structure

Abstract

The utility model discloses a light steel large-span roof structure which comprises a roof steel structure, a plurality of purlines, a bottom plate structure, a heat preservation layer, a ventilation layer, a roof composite layer and a waterproof layer which are sequentially distributed from bottom to top, and the purlines are fixed above the roof steel structure at intervals. The bottom plate structure is installed above the purlines, the waterproof layer is fixed above the roof composite layer, and the roof composite layer, the breathable layer and the heat preservation layer are sequentially laid above the bottom plate structure from top to bottom. The waterproof layer is fixed above the roof composite layer, rainwater leakage is effectively prevented, the performance advantages of the waterproof layer are fully played, the roof composite layer, the breathable layer, the heat preservation layer, the bottom plate structure and other multi-layer structures are further arranged, the roof drainage function can be achieved, heat preservation, breathability, heat insulation, durability and the like can be achieved, and the service life of the roof is prolonged. The cold bridge phenomenon can be effectively reduced, and the energy consumption of a building is reduced.

Description

Technical Field

[0001] This utility model relates to the field of roof building technology, specifically to a light steel large-span roof structure. Background Technology

[0002] With the continuous development of modern building technology, light steel large-span roof structures have been widely used in industrial plants, large stadiums, logistics warehouses, and other building fields due to their advantages such as light weight, large span, and convenient construction. However, due to their structural characteristics and the complexity of the usage environment, ensuring the waterproof performance, durability, and other multi-level performance of the roof has become a key issue in construction. Traditional light steel large-span roof structures mainly consist of a waterproof layer, color steel plates, roof purlins, steel structure, and self-tapping screws. The waterproof layer is fixed beneath the color steel plates, and the self-tapping screws penetrate the waterproof layer to fix the roof panels above the purlins. Although existing roof structures can achieve waterproofing, they have the following problems during use:

[0003] 1) Although the existing roof structure can play a role in waterproofing to a certain extent, during long-term use, due to factors such as thermal expansion and contraction of the steel structure, load, and friction between the color steel plate and the waterproof layer, the waterproof layer is prone to damage, bulging, and delamination, which in turn affects the waterproof performance of the roof.

[0004] 2) Self-tapping screws penetrate the waterproofing layer to fix the roof panels to the top of the purlins. This penetration of the waterproofing layer by the self-tapping screws can easily lead to leaks.

[0005] 3) The existing roof structure has an intermediate waterproof layer. When the waterproof layer leaks, the repair work is extremely difficult. It requires the removal of a large amount of color steel plate material, which not only increases the repair cost, but also affects the normal use of the building.

[0006] 4) The existing roof structure lacks thermal insulation design, which easily leads to cold bridging, causing the roof to dissipate heat too quickly in winter and have poor insulation effect in summer, increasing the building's energy consumption. Utility Model Content

[0007] To address the problems mentioned in the background technology, the purpose of this utility model is to provide a lightweight steel large-span roof structure that places the waterproof layer above the roof composite layer, ensures a tight bond between the waterproof layer and the color steel plate, effectively prevents rainwater leakage, fully utilizes the performance advantages of the waterproof layer, and also includes a multi-layer structure such as a roof composite layer, a breathable layer, a thermal insulation layer, and a base plate structure. This structure not only achieves roof drainage but also provides thermal insulation, breathability, heat insulation, and durability, effectively reducing cold bridging and lowering the building's energy consumption.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A lightweight steel large-span roof structure includes, from bottom to top, a roof steel structure, several purlins, a base plate structure, an insulation layer, a breathable layer, a roof composite layer, and a waterproof layer. The several purlins are fixed to the roof steel structure at intervals. The base plate structure is installed on top of the several purlins. The waterproof layer is fixed on top of the roof composite layer. The roof composite layer, breathable layer, and insulation layer are laid on top of the base plate structure from top to bottom.

[0010] As a further improvement to the above technical solution, the light steel large-span roof structure includes several connecting supports, which are distributed at intervals between several purlins and the roof composite layer, and each connecting support is fixed above each purlin.

[0011] As a further improvement to the above technical solution, the roof composite layer includes several interlocking roof panels and a fireproof rock wool layer. Adjacent interlocking roof panels are spliced ​​together by connecting supports. The fireproof rock wool layer is laid under the several interlocking roof panels and above the breathable layer.

[0012] As a further improvement to the above technical solution, the waterproof layer is a TPO waterproof membrane.

[0013] As a further improvement to the above technical solution, the back of the waterproof layer is coated with adhesive, the surface of the roof composite layer is coated with adhesive, and the waterproof layer is fixed to the roof composite layer by adhesive.

[0014] As a further improvement to the above technical solution, the base plate structure includes a roof base plate layer and a fixing connector. The roof base plate layer is provided with connecting holes that cooperate with the fixing connector. The roof base plate layer is installed above a number of purlins through the fixing connector.

[0015] As a further improvement to the above technical solution, the breathable layer is laid on the upper part of the insulation layer, and a waterproof tape is provided between the breathable layer and the insulation layer. The breathable layer is fixed to the upper part of the roof floor layer by the waterproof tape.

[0016] As a further improvement to the above technical solution, the insulation layer is glass fiber cotton, which is laid on top of the roof slab layer of the base slab structure.

[0017] As a further improvement to the above technical solution, the insulation layer laid on top of the roof slab layer has a thickness of 50mm.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1) The lightweight steel large-span roof structure of this utility model includes, from bottom to top, a roof steel structure, several purlins, a base plate structure, an insulation layer, a breathable layer, a roof composite layer, and a waterproof layer. The purlins are fixed to the roof steel structure at intervals, the base plate structure is installed above the purlins, and the waterproof layer is fixed above the roof composite layer. The roof composite layer, breathable layer, and insulation layer are laid sequentially above the base plate structure from top to bottom. By placing the waterproof layer above the roof composite layer, this utility model ensures a tight bond between the waterproof layer and the color steel plate, effectively preventing rainwater leakage and fully utilizing the performance advantages of the waterproof layer. The multi-layered structure, including the roof composite layer, breathable layer, insulation layer, and base plate structure, not only achieves roof drainage but also provides insulation, breathability, heat insulation, and durability, effectively reducing thermal bridging and lowering building energy consumption.

[0020] 2) In this invention, adhesive is applied to the back of the waterproof layer and to the surface of the roof composite layer. The waterproof layer is then fixed to the roof composite layer using adhesive. By fixing the waterproof layer to the top of the color steel plate, a tight bond between the waterproof layer and the color steel plate is ensured, effectively preventing rainwater leakage from the roof. Attached Figure Description

[0021] Figure 1 This is an elevation view of the lightweight steel large-span roof structure of this utility model;

[0022] Figure 2 This utility model Figure 1 A detailed diagram of node JD-01 in the middle node;

[0023] Figure 3 This utility model Figure 1 A detailed diagram of node JD-02.

[0024] In the diagram, the components are: 1. Waterproof layer; 2. Roof composite layer; 21. Interlocking roof panel; 22. Fireproof rock wool layer; 3. Breathable layer; 4. Insulation layer; 5. Base structure; 51. Roof base layer; 52. Fixed connector; 6. Purlin; 7. Roof steel structure; 8. Connecting support. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-3As shown, this embodiment of the present invention provides a lightweight steel large-span roof structure. This lightweight steel large-span roof structure includes, from bottom to top, a roof steel structure 7, several purlins 6, a base plate structure 5, an insulation layer 4, a breathable layer 3, a roof composite layer 2, and a waterproof layer 1. The several purlins 6 are fixed at intervals above the roof steel structure 7. The base plate structure 5 is installed above the several purlins 6. The waterproof layer 1 is fixed above the roof composite layer 2. The roof composite layer 2, breathable layer 3, and insulation layer 4 are laid sequentially above the base plate structure 5 from top to bottom. Specifically, the purlins 6 of this invention can be C-shaped purlins 6 or Z-shaped steel purlins 6, and the roof steel structure 7 is a steel beam. This utility model's lightweight steel large-span roof structure, by placing the waterproof layer 1 above the roof composite layer 2, effectively avoids direct contact between the waterproof layer 1 and the steel structure, reducing damage to the waterproof layer 1 caused by deformation of the roof steel structure 7, and extending the service life of the waterproof layer 1. Furthermore, placing the waterproof layer 1 above the roof composite layer 2 makes the drainage path of the entire roof structure smoother, allowing rainwater to drain quickly from the roof, reducing the possibility of rainwater accumulating on the roof, and further reducing the risk of leakage. Once the waterproof layer 1 leaks, the repair work is relatively simple, requiring only local repair of the waterproof layer 1, without the need to remove other structural layers, greatly reducing maintenance costs and the impact on the building's functionality.

[0027] In this embodiment, the light steel long-span roof structure includes several connecting supports 8, which are spaced apart between several purlins 6 and the roof composite layer 2. Each connecting support 8 is fixed above each purlin 6. Specifically, the distance between two adjacent connecting supports 8 is 1 meter, and the connecting supports 8 can be configured as interlocking connecting supports 8.

[0028] The roof composite layer 2 of this utility model includes several interlocking roof panels 21 and a fireproof rock wool layer 22. Adjacent interlocking roof panels 21 are spliced ​​together by connecting supports 8. The fireproof rock wool layer 22 is laid below the interlocking roof panels 21 and above the breathable layer 3. Specifically, the interlocking roof panels 21 are interlocking color steel plates with a thickness of 0.476 mm, and the fireproof rock wool layer 22 has a thickness of 50 mm.

[0029] In its specific implementation, the waterproof layer 1 of this invention is a TPO waterproof membrane. Adhesive is applied to the back of the waterproof layer, and adhesive is also applied to the surface of the roof composite layer. The waterproof layer is then fixed to the roof composite layer using adhesive. By fixing the waterproof layer to the top of the color steel plate, a tight bond between the waterproof layer and the color steel plate is ensured, effectively preventing rainwater leakage from the roof. The thickness of the fixed waterproof layer 1 is 1.5 mm. This invention uses the waterproof layer 1 as the top layer, avoiding the problems of traditional roof structures where the waterproof layer 1 is used as an intermediate layer, leading to self-tapping screws penetrating the waterproof layer 1, compromising its integrity, and causing the roof structure to leak easily.

[0030] In other embodiments, the waterproof layer 1 of this utility model can also be any one of the following structures: PVC waterproof membrane, EPDM rubber waterproof membrane, and SBS waterproof membrane.

[0031] In this embodiment, the base plate structure 5 includes a roof base plate layer 51 and a fixing connector 52. The roof base plate layer 51 has connecting holes that mate with the fixing connector 52. The roof base plate layer 51 is installed above several purlins 6 via the fixing connector 52. Specifically, the roof base plate layer 51 is a perforated profiled color steel sheet with a thickness of 0.476 mm. The fixing connector 52 can be a self-tapping hex screw. The use of a perforated profiled color steel sheet for the base plate structure 5 facilitates the laying of thicker insulation boards, resulting in better insulation performance of the roof structure.

[0032] In this invention, a breathable layer 3 is laid on top of an insulation layer 4, and a waterproof tape is provided between the breathable layer 3 and the insulation layer 4. The breathable layer 3 is fixed to the top of the roof base layer 51 by the waterproof tape. The breathable layer 3 fixed in this invention is a polymer waterproof and breathable membrane, and the thickness of the breathable layer 3 is 0.3 mm.

[0033] The insulation layer 4 in this invention is made of fiberglass wool, which is laid on top of the roof slab layer 51 of the base structure 5, and the thickness of the fiberglass wool is 50mm. Specifically, the density of the laid fiberglass wool is 24kg / m³. 3 The fire resistance of fiberglass wool is Class A. Laying fiberglass wool above the roof floor layer 51 can achieve thermal insulation, reduce heat loss from the building, and lower energy consumption.

[0034] In other embodiments, the insulation layer 4 may also be selected with a density of 150 kg / m³. 3 Vertical fiber rock wool or with a density of 72 kg / m³ 3 Fiberglass ultrafine glass wool board.

[0035] The specific installation process of this utility model's light steel large-span roof structure:

[0036] First, fix several purlins 6 that are spaced apart from each other on the roof steel structure 7;

[0037] Secondly, the roof base layer 51 is laid on several purlins 6 using self-tapping hex screws, and the thickness of the laid roof base layer 51 is 0.476mm.

[0038] Then, a 50mm thick glass fiber cotton is laid on top of the roof base layer 51 as an insulation layer 4;

[0039] Subsequently, a breathable layer 3 with a thickness of 0.3 mm is installed on top of the insulation layer 4 and sealed.

[0040] Next, a roof composite layer 2, consisting of a 0.476mm thick interlocking roof panel 21 and a 50mm thick fireproof rock wool composite, is laid and fixed on top of the breathable layer 3.

[0041] Finally, apply adhesive evenly to the surface of the interlocking roof panel 21 and the back of the waterproof membrane. When it is dry to the touch, attach the waterproof membrane to the interlocking roof panel 21 to lay the waterproof membrane on top of the roof composite layer 2.

[0042] Compared with the prior art, the technical solution disclosed in the above embodiments has the following beneficial effects:

[0043] In the above embodiments, the lightweight steel large-span roof structure of this utility model ensures a tight bond between the waterproof layer 1 and the color steel plate by placing the waterproof layer 1 above the roof composite layer 2, effectively preventing rainwater leakage and fully utilizing the performance advantages of the waterproof layer 1. It also includes a multi-layered structure such as the roof composite layer 2, the breathable layer 3, the insulation layer 4, and the base structure 5. These layers are interconnected and work together to ensure the overall performance of the roof system. In addition to achieving roof drainage, it also provides insulation, breathability, heat insulation, and durability. This provides better conditions for the rational arrangement of the insulation layer 4 and the breathable layer 3, effectively reducing cold bridging, improving the roof's thermal insulation performance, and reducing building energy consumption. It is a roof structure composed of multiple performance levels, effectively solving the problems of poor waterproofing, poor insulation, and poor heat insulation found in traditional roofs, and has significant technical advantages and broad application prospects.

[0044] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A lightweight steel large-span roof structure, characterized in that: The light steel large-span roof structure includes, from bottom to top, a roof steel structure, several purlins, a base plate structure, an insulation layer, a breathable layer, a roof composite layer, and a waterproof layer. The several purlins are fixed to the roof steel structure at intervals. The base plate structure is installed on top of the several purlins. The waterproof layer is fixed on top of the roof composite layer. The roof composite layer, breathable layer, and insulation layer are laid on top of the base plate structure from top to bottom.

2. The light steel large-span roof structure according to claim 1, characterized in that: The light steel large-span roof structure includes several connecting supports, which are distributed at intervals between several purlins and the roof composite layer, with each connecting support fixed above each purlin.

3. The light steel large-span roof structure according to claim 1, characterized in that: The roof composite layer includes several interlocking roof panels and a fireproof rock wool layer. Adjacent interlocking roof panels are spliced ​​together by connecting supports. The fireproof rock wool layer is laid under the several interlocking roof panels and above the breathable layer.

4. The light steel large-span roof structure according to claim 1, characterized in that: The waterproof layer is a TPO waterproof membrane.

5. The light steel large-span roof structure according to claim 1, characterized in that: The back of the waterproof layer is coated with adhesive, the surface of the roof composite layer is coated with adhesive, and the waterproof layer is fixed to the roof composite layer with adhesive.

6. The light steel large-span roof structure according to claim 1, characterized in that: The base plate structure includes a roof base plate layer and fixing connectors. The roof base plate layer is provided with connecting holes that cooperate with the fixing connectors. The roof base plate layer is installed above a number of purlins through the fixing connectors.

7. The light steel large-span roof structure according to claim 1, characterized in that: The breathable layer is laid on top of the insulation layer, and a waterproof tape is provided between the breathable layer and the insulation layer. The breathable layer is fixed to the top of the roof floor layer by the waterproof tape.

8. The light steel large-span roof structure according to claim 1, characterized in that: The insulation layer is made of fiberglass wool, which is laid on top of the roof slab layer of the base slab structure.

9. The light steel large-span roof structure according to claim 8, characterized in that: The insulation layer laid on top of the roof slab is 50mm thick.

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