Roof structure of steel structure factory building

Abstract

The utility model discloses a steel structure factory building roof structure which comprises components, a main beam and stand columns, each component is of an equilateral triangle structure, one side of each component is connected with a bolt, the components are connected through the bolts to form three sets of trapezoid trusses, and the main beam is connected with the stand columns. The two sides of the bottoms of the trapezoid trusses are connected with stand columns through bolts, the centers of the three sets of trapezoid trusses are connected with a main beam, the main beam and the three sets of trapezoid trusses form a roof frame, a top plate is arranged at the center of the top of the trapezoid trusses, and the bottom of the top plate is connected with a supporting plate; a foam layer is arranged above the supporting plate, a waterproof plate is arranged above the foam layer, equilateral triangle components are welded and connected in a mixed mode through bolts to form a trapezoid truss, the roof structure has good stability and bearing capacity, meanwhile, production and installation are convenient, and construction time and cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of roof structures, in particular to a steel structure factory building roof structure. Background Art

[0002] The steel structure factory building roof mainly uses steel beams or steel trusses as the main load-bearing structure, and through the cooperation of purlins and roof panels, a stable and waterproof roof system is formed. This structural system is widely used in modern industrial buildings because of its fast construction speed, light weight, high strength and good earthquake resistance.

[0003] According to patent No. CN110863680A, a steel structure factory building and its roof structure include a roof structure and T-shaped support columns, and the T-shaped support columns are evenly installed vertically at the bottom of the roof structure. The roof structure includes three groups of triangular trusses, and the three groups of triangular trusses are arranged parallel to each other. The inner cavity of the triangular trusses is evenly welded with reinforcement plates, and the reinforcement plates are arranged at an angle. Support main beams are horizontally welded between the top and the middle of the bottom of the three groups of triangular trusses. The structure is provided with a water collection structure for collecting rainwater on the top of the roof structure. In summer, it can collect rainwater or water sprayed on the roof, thereby utilizing the principle of water evaporation and heat absorption to reduce the temperature in the factory building, thereby avoiding the impact on the health and work efficiency of the staff due to the relatively hot factory building, as well as the impact of high temperature on the working condition of the equipment in the factory building.

[0004] However, the triangular truss design of the above structure has poor stability, and its bearing capacity and seismic performance require more designs to strengthen. It is too complicated and lacks integrity. Therefore, in view of this, the existing structure and its deficiencies are studied and improved, and a steel structure factory roof structure is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a steel structure factory roof structure to solve the problems proposed in the above background technology that the above-mentioned roof structure has poor stability during use, the bearing capacity and seismic performance need to be increased, the design is too complicated, and the integrity is insufficient so that the structural strength is affected.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel structure factory building roof structure, comprising components, main beams and columns, characterized in that: the component is an equilateral triangle structure, one side of the component is connected with bolts, and the components are connected by the bolts to form a trapezoidal truss, the trapezoidal truss is provided with three groups, both sides of the bottom of the trapezoidal truss are connected with columns through the bolts, the main beams are connected at the centers of the three groups of the trapezoidal trusses, and the main beams and the three groups of the trapezoidal trusses form a roof frame, a top plate is provided at the top center of the trapezoidal truss, the bottom of the top plate is connected with a support plate, a foam layer is provided above the support plate, and a waterproof board is provided above the foam layer.

[0007] Furthermore, the components are provided in a plurality of groups, and the plurality of groups of components are connected by being turned upside down to form the trapezoidal truss, and two groups of components are connected by the bolts, and welding plates are welded at the connection between the two groups of components.

[0008] Furthermore, the bolt comprises a bolt head, a bolt rod and a nut. The bottom of the bolt head is connected to the bolt rod, and the side of the bolt rod away from the bolt head is connected to the nut through a bolt.

[0009] Furthermore, the main beam is a rectangular structure, and the three groups of trapezoidal trusses are evenly arranged along the horizontal direction of the main beam. A reinforcement plate is connected to the inside of the main beam, and several groups of reinforcement plates are provided. The reinforcement plates are obliquely arranged inside the main beam to form a triangular support.

[0010] Furthermore, there is a gap of 50-100 mm between the foam layer and the support plate.

[0011] Furthermore, the waterproof board is arranged obliquely from the middle to both ends, and the outer surface of the waterproof board is provided with drainage grooves. The drainage grooves are provided in several groups, and the drainage grooves are evenly arranged along the horizontal direction of the waterproof board.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the steel structure factory building roof structure adopts equilateral triangle components connected by bolt welding to form a trapezoidal truss, so that the roof structure has good stability and bearing capacity, and is easy to produce and install, reducing construction time and cost. The specific contents are as follows:

[0013] The trapezoidal truss is composed of several groups of equilateral triangle components connected by bolt welding. The equilateral triangle has extremely high structural stability. When multiple equilateral triangle components are combined to form a trapezoidal beam, these small triangles can jointly bear the weight and external force of the overall structure, making the entire beam system more stable and having good earthquake resistance and wind resistance. This structure can evenly disperse and transfer loads when subjected to external forces, thereby reducing structural damage caused by stress concentration. At the same time, since each equilateral triangle component is standardized, it can be prefabricated on a large scale in the factory, and the main work on site is assembly, which not only saves materials but also reduces The time and cost of on-site construction are reduced. The structural strength can be enhanced by the hybrid connection of bolts and welding between the components. The main beam is obliquely set through the reinforcement plate to form a triangular support. Under the node load evenly distributed along the span, the axial force of the upper and lower chords is the largest at the end point and gradually decreases toward the middle of the span. This distribution of internal forces makes the structure more stable. When combined with the trapezoidal truss, the roof structure can stably cope with loads in all directions. The outer surface of the trapezoidal truss is provided with a support plate, and there is a foam layer on the support plate. There is a gap of 50-100mm between the foam layer and the support plate. The sound insulation effect mainly depends on the sound absorption performance of the foam layer itself and the acoustic impedance formed by the air layer behind it. Maintaining an appropriate gap can increase the energy loss of sound during reflection and propagation, thereby reducing the propagation of noise. The gap between the support plate and the foam layer can not only prevent the direct transmission of sound, but also further reduce the noise level through the buffering effect of the air layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a steel structure factory building roof structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the side structure of a steel structure factory roof structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the waterproof layer structure of a steel structure factory roof structure of the utility model;

[0017] Figure 4 The utility model is a structural schematic diagram of the connection of the roof structural components of a steel structure factory building.

[0018] In the figure: 1. component; 2. trapezoidal truss; 3. welding plate; 4. main beam; 5. column; 6. bolt; 7. top plate; 8. support plate; 9. foam layer; 10. waterproof board; 11. bolt head; 12. bolt rod; 13. nut; 14. reinforcement plate; 15. drainage trough. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 - Figure 4 The utility model provides a technical solution: a steel structure factory roof structure, including component 1, main beam 4 and column 5, component 1 is an equilateral triangle structure, equilateral triangle has extremely high structural stability, its three sides are equal, three internal angles are 60 degrees, it is a kind of acute triangle, and component 1 can be prefabricated on a large scale in the factory to reduce construction time and cost, component 1 is provided with several groups, several groups of components 1 are connected by turning upside down to form a trapezoidal truss 2, two groups of components 1 are connected by bolts 6, and welding sheets 3 are welded at the connection of component 1, welding sheets 3 are sheet structures of metal materials, and adding welding sheets 3 at the connection can significantly improve the bearing capacity and fatigue resistance of the connection.

[0021] The welding plate 3 is used as a reinforcing plate, which can disperse stress when transmitting internal force and reduce stress concentration, thereby reducing the risk of cracks in the weld. The bolt 6 includes a bolt head 11, a bolt rod 12 and a nut 13. The bolt head 11 is usually made of high-strength steel and has sufficient tensile and torsion resistance to prevent damage during the tightening process. The bottom of the bolt head 11 is connected to the bolt rod 12. The bolt rod 12 needs to have high strength and durability to ensure that it does not deform or break under various loads. For this purpose, it is necessary to use an alloy with better performance. The side of the bolt rod 12 away from the bolt head 11 is connected to a nut 13 by a bolt. The nut 13 matches the thread of the bolt rod 12. By rotating the nut 13, two or more components 1 can be firmly connected together. The nut 13 is usually hexagonal, which is convenient for operation with tools. The trapezoidal truss 2 is a truss structure formed by connecting several groups of components 1 through bolts 6 and welding plates 3. When multiple components 1 are combined to form the trapezoidal truss 2, these small triangles can jointly bear the weight and external force of the overall structure, making the entire truss system more stable. The trapezoidal truss 2 is provided with three groups. Both sides of the bottom of the trapezoidal truss 2 are connected with columns 5 through bolts 6. The columns 5 play a role in supporting the roof structure. The centers of the three groups of trapezoidal trusses 2 are connected with main beams 4. The main beams 4 are rectangular structures. The three groups of trapezoidal trusses 2 are all horizontally connected along the main beams 4. The main beam 4 is evenly arranged, and provides a support for the longitudinal load for the trapezoidal truss 2, which plays a role in strengthening the roof structure and forming an overall frame. The interior of the main beam 4 is connected with a reinforcing plate 14, and a plurality of reinforcing plates 14 are provided. The reinforcing plates 14 are obliquely arranged inside the main beam 4 to form a triangular support. The reinforcing plates 14 are made of hard steel material and have extremely high structural strength. This design enables the main beam to be under the node load uniformly distributed along the span. The axial force of the upper and lower chords is the largest at the end points and gradually decreases toward the middle of the span. This distribution of internal force makes the structure more stable, and the main beam 4 and the three groups of trapezoidal trusses 2 form a roof frame.

[0022] A top plate 7 is arranged at the top center of the trapezoidal truss 2. The top plate 7 is a triangular strip structure made of carbon steel material, which plays the role of supporting the support plate 8 above the trapezoidal truss 2 and provides a slope for the waterproof plate 10. The bottom of the top plate 7 is connected to the support plate 8, which is made of metal material and plays the role of supporting the material with functions such as sound insulation and heat preservation above. A foam layer 9 is arranged above the support plate 8. The thicker the foam material of the foam layer 9, the more significant its sound absorption and sound insulation effect. Thicker foam can absorb sound in a wider frequency range, thereby providing better sound insulation effect. At the same time, there is a gap of 50-100mm between the foam layer 9 and the support plate 8. The sound insulation effect is mainly achieved by the sound absorption performance of the foam layer 9 itself and the acoustic impedance formed by the air layer behind it. Maintaining an appropriate gap can increase the energy loss of sound during reflection and propagation, thereby reducing the propagation of noise.

[0023] The gap between the support plate 8 and the foam layer 9 can not only prevent the direct transmission of sound, but also further reduce the noise level through the buffering effect of the air layer. A waterproof board 10 is arranged above the foam layer 9. The waterproof board 10 should be made of corrosion-resistant and weather-resistant materials, such as PVC or TPO waterproof membranes. These materials can be exposed to the outdoors for a long time without aging, ensuring a lasting waterproof effect. At the same time, in order to prevent the generation of water vapor condensation droplets, a waterproof breathable membrane should be covered on the side of the waterproof board 10 in contact with the foam layer 9. The waterproof board 10 is arranged obliquely from the middle to both ends by relying on the top plate 7, so that rainwater can naturally slide down the waterproof board 10 to prevent water accumulation on the top of the roof structure from affecting use. The outer surface of the waterproof board 10 is provided with a drainage groove 15, and the drainage groove 15 is provided with a plurality of groups, and the drainage grooves 15 are evenly arranged along the horizontal direction of the waterproof board 10 to accelerate the discharge of rainwater.

[0024] Working principle: When using a steel structure factory roof structure, the equilateral triangle component 1 is pulled from the factory to the site, and several groups of components 1 are bolted and welded together using bolts 6 and welding plates 3 to form a trapezoidal truss 2. The equilateral triangle has extremely high structural stability. When multiple equilateral triangle components 1 are combined to form a trapezoidal truss 2, these small triangles can jointly bear the weight and external force of the overall structure, making the entire trapezoidal truss 2 more stable and having good earthquake resistance and wind resistance. This structure can evenly disperse and transfer the load when subjected to external forces, thereby reducing the stress concentration caused by the stress concentration. The structural damage caused by this is eliminated. At the same time, because the components 1 are all standardized, they can be prefabricated on a large scale in the factory, and the main assembly work is carried out on site. This not only saves materials, but also reduces on-site construction time and cost. The trapezoidal truss 2 is hoisted to the top of the column 5 and fixed with bolts 6. The main beam 4 passes through the center of the trapezoidal truss 2 and is firmly connected. The middle of the main beam 4 is obliquely arranged with a reinforcement plate 14 to form a triangular support. This design makes the main beam under the node load evenly distributed along the span. The axial force of the upper and lower chords is the largest at the end points and gradually decreases towards the middle of the span. This distribution of internal force makes the structure more stable.

[0025] Then, a top plate 7 is connected to the top center of the trapezoidal truss 2 to provide a fulcrum for the connection of the upper surface. Support plates 8 are connected to both sides of the top plate 7. The support plates 8 are tightly connected to the outer surface of the trapezoidal truss 2 to protect the waterproof property of the roof structure. A foam layer 9 is arranged above the support plate 8. A gap of 50-100 mm is left between the foam layer 9 and the support plate 8. The sound insulation effect mainly depends on the sound absorption performance of the foam layer 9 itself and the acoustic impedance formed by the air layer behind it. Maintaining an appropriate gap can increase the energy loss of sound during reflection and propagation, thereby reducing the propagation of noise. The gap between the support plate 8 and the foam layer 9 can not only prevent the direct transmission of sound, but also further reduce the noise level through the buffering effect of the air layer. Then, an upper waterproof board 10 is arranged above the foam layer 9. The waterproof board 10 prevents rainwater from accumulating on the roof structure through the drainage groove 15 on the surface.

Claims

1. A steel structure factory building roof structure, comprising a member (1), a main beam (4) and a column (5), characterized in that: The component (1) is an equilateral triangle structure, one side of the component (1) is connected with a bolt (6), and the component (1) is connected by the bolt (6) to form a trapezoidal truss (2), three groups of the trapezoidal truss (2) are provided, both sides of the bottom of the trapezoidal truss (2) are connected with columns (5) by the bolts (6), the centers of the three groups of the trapezoidal truss (2) are connected with a main beam (4), and the main beam (4) and the three groups of the trapezoidal truss (2) form a roof frame, a top plate (7) is provided at the top center of the trapezoidal truss (2), the bottom of the top plate (7) is connected with a support plate (8), a foam layer (9) is provided above the support plate (8), and a waterproof board (10) is provided above the foam layer (9).

2. A steel structure factory roof structure according to claim 1, characterized in that: The components (1) are provided in a plurality of groups, and the plurality of groups of the components (1) are connected in an upside-down manner to form the ladder truss (2), and two groups of the components (1) are connected by the bolts (6), and welding plates (3) are welded at the connection between the two groups of the components (1).

3. The steel structure factory roof structure according to claim 1, characterized in that: The bolt (6) comprises a bolt head (11), a bolt rod (12) and a nut (13); the bottom of the bolt head (11) is connected to the bolt rod (12), and the side of the bolt rod (12) away from the bolt head (11) is connected to the nut (13) via a bolt.

4. The steel structure factory roof structure according to claim 1, characterized in that: The main beam (4) is a rectangular structure, and three groups of the trapezoidal trusses (2) are evenly arranged along the horizontal direction of the main beam (4). A reinforcing plate (14) is connected to the inside of the main beam (4), and a plurality of groups of the reinforcing plates (14) are provided. The reinforcing plates (14) are obliquely arranged inside the main beam (4) to form a triangular support.

5. The steel structure factory roof structure according to claim 1, characterized in that: There is a gap of 50-100 mm between the foam layer (9) and the support plate (8).

6. The steel structure factory roof structure according to claim 1, characterized in that: The waterproof board (10) is arranged obliquely from the middle to both ends, and the outer surface of the waterproof board (10) is provided with drainage grooves (15), and the drainage grooves (15) are provided in a plurality of groups, and the drainage grooves (15) are evenly arranged along the horizontal direction of the waterproof board (10).

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