A fire-resistant steel structure
By designing cooling U-shaped frames and flow reduction plates in the steel structure and using rainwater to cool down, the problem of steel structures being easily deformed or broken in fire is solved, and the fire resistance and safety of the steel structure are improved.
Patent Information
- Application Number
- CN202421569689.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-04
AI Technical Summary
Steel structures are prone to deform or breakage in fires, resulting in building losses, and the prior art is difficult to effectively reduce this risk.
A refractory steel structure is designed, and the inner top wall and bottom wall of the square steel pipe are fixedly connected to the cooling U-shaped frame, and multiple flow reduction plates are set up on the inner top wall and bottom wall, and connected to the external water tank through the connecting pipe. After using rainwater to reduce the speed through the flow reduction plate, it is transported into the cooling U-shaped frame through the connecting plate to achieve cooling of the steel structure.
Through the coordination of the cooling U-frame and rainwater, the risk of deformation and fracture caused by high temperatures in the steel structure during fire is effectively reduced, and the fire resistance and safety of the steel structure are improved.
Smart Images
Figure CN222745449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel structures, in particular to a fire-resistant steel structure. Background Art
[0002] Steel structure is a structure made of steel materials and is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of steel sections and steel plates, and adopts rust removal and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing. The components or parts are usually connected by welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in large factories, venues, super high-rise buildings, bridges and other fields. Steel structures are prone to rust. Generally, steel structures need to be rust-free, galvanized or painted, and maintained regularly.
[0003] At present, building structures generally use steel structures. When a fire occurs in a steel structure building, if the fire is not controlled in time, the steel structure will be deformed or even broken under high temperature for a long time, and the building walls supported by the steel structure will fall, causing great losses and poor practicality. Utility Model Content
[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a fire-resistant steel structure, which can transport collected rainwater into the empty pipes of the steel structure, cool the steel structure, and reduce the possibility of deformation of the steel structure.
[0005] The above technical objectives of the utility model are achieved through the following technical solutions:
[0006] A fire-resistant steel structure comprises a square steel pipe, wherein the inner top wall and the inner bottom wall of the square steel pipe are fixedly connected with a cooling U-shaped frame, the inner top wall and the inner bottom wall of the square steel pipe are fixedly connected with a plurality of flow-reducing plates, and the plurality of flow-reducing plates are respectively fixed to the inner top wall and the inner top wall of the two cooling U-shaped frames, one side of the two cooling U-shaped frames are fixedly connected with a connecting pipe, and the two connecting pipes are fixed to the square steel pipe, the other side of the two cooling U-shaped frames are fixedly connected with a second connecting plate, and a first connecting plate is fixedly connected between the inner top wall and the inner bottom wall of the square steel pipe.
[0007] By adopting the above technical scheme, the cooling U-shaped frame, square steel pipe, connecting pipe, first connecting plate and second connecting plate cooperate with the external water tank and valve, so as to transport water into the cooling U-shaped frame to cool the square steel pipe and reduce the possibility of deformation of the steel structure caused by the high temperature generated by the fire.
[0008] In a preferred example, the utility model can be further configured as follows: the surface of the square steel pipe is provided with a fire-resistant coating, and the surface of the fire-resistant coating is provided with a concrete insulation layer.
[0009] By adopting the above technical scheme, the fire-resistant coating and the concrete insulation layer can improve the fire resistance of the square steel pipe.
[0010] In a preferred example, the utility model can be further configured as follows: two limit blocks are fixedly connected to the upper and lower ends of the refractory coating, two limit grooves are provided on the inner top wall and the inner bottom wall of the concrete insulation layer, and the four limit blocks are respectively slidably connected to the four limit grooves.
[0011] By adopting the above technical solution, the limiting block can conveniently cover the concrete insulation layer on the surface of the square steel pipe and the fire-resistant coating.
[0012] In a preferred example, the utility model can be further configured as follows: multiple connecting bolts are provided at the upper and lower ends of the concrete insulation layer, and the multiple connecting bolts respectively movably penetrate the inner top wall and the inner bottom wall of the concrete insulation layer, and the multiple connecting bolts are respectively threadedly connected to the four limit blocks.
[0013] By adopting the above technical solution, the connecting bolts can fix the concrete insulation layer and the square steel pipe.
[0014] In a preferred example, the utility model can be further configured as follows: a support plate is fixedly connected between the two cooling U-shaped frames, a plurality of X-shaped brackets are arranged on both sides of the support plate, and the plurality of X-shaped brackets are fixedly connected between the two cooling U-shaped frames.
[0015] By adopting the above technical solution, the X-shaped bracket and the support plate can support and reinforce the two cooling U-shaped frames.
[0016] In a preferred example, the utility model can be further configured as follows: both side walls of the square steel tube are fixedly connected with U-shaped concrete insulation boards, and the two U-shaped concrete insulation boards are respectively fixed to the two sides of the two cooling U-shaped frames.
[0017] By adopting the above technical solution, the U-shaped concrete insulation board can strengthen the cooling U-shaped frame while improving the insulation effect.
[0018] In summary, the present invention includes at least one of the following beneficial technical effects:
[0019] 1. A cooling U-shaped frame, a square steel pipe, a connecting pipe, a first connecting plate and a second connecting plate are provided. A water storage tank can be provided outside the steel structure to receive rainwater from the outside for storage. The external water tank and the valve cooperate. When a fire occurs, the valve is opened, and the rainwater flows into the cooling U-shaped frame along the connecting pipe. The rainwater is decelerated by the downflow plate to improve the cooling effect of the square steel pipe. The water flows into the next cooling U-shaped frame through the first connecting plate and the second connecting plate. Water can be transported to the cooling U-shaped frame to cool the square steel pipe, thereby reducing the possibility of deformation of the steel structure caused by the high temperature generated by the fire.
[0020] 2. A concrete insulation layer, connecting bolts, limit grooves and limit blocks are provided. When installing the concrete insulation layer, align the limit grooves with the position of the limit blocks, put the concrete insulation layer on the square steel pipe, push the concrete insulation layer to put the concrete insulation layer on the surface of the square steel pipe, rotate the connecting bolts, and insert the connecting bolts through the concrete insulation layer threads into the limit blocks to fix the concrete insulation layer and the square steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a stereogram of this embodiment;
[0022] Figure 2 is a first stereoscopic cross-sectional view of the present embodiment;
[0023] Figure 3 This embodiment Figure 2 A partial enlarged view of the middle A;
[0024] Figure 4 It is a second stereoscopic cross-sectional view of this embodiment.
[0025] In the figure, 1. square steel pipe; 2. fire-resistant coating; 3. concrete insulation layer; 4. U-shaped concrete insulation board; 5. first connecting plate; 6. downflow plate; 7. cooling U-shaped frame; 8. X-shaped bracket; 9. support plate; 10. limit groove; 11. limit block; 12. second connecting plate; 13. connecting bolt; 14. connecting pipe. DETAILED DESCRIPTION
[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0027] Example:
[0028] Reference Figure 1-4The utility model discloses a fire-resistant steel structure, including a square steel tube 1, the inner top wall and the inner bottom wall of the square steel tube 1 are fixedly connected with a cooling U-shaped frame 7, the inner top wall and the inner bottom wall of the square steel tube 1 are fixedly connected with a plurality of downflow plates 6, and the plurality of downflow plates 6 are respectively fixed with the inner top wall and the inner top wall of the two cooling U-shaped frames 7, one side of the two cooling U-shaped frames 7 are fixedly connected with a connecting pipe 14, and the two connecting pipes 14 are fixed to the square steel tube 1, the other side of the two cooling U-shaped frames 7 are fixedly connected with a second connecting plate 12, the inner top wall and the inner bottom wall of the square steel tube 1 are fixedly connected with each other, and the inner top wall and the inner bottom wall of the square steel tube 1 are fixedly connected with each other. A first connecting plate 5 is fixedly connected, and a water tank can be set outside the steel structure to receive rainwater brought from the outside for storage. The external water tank and the valve cooperate. When a fire occurs, the valve is opened, and the rainwater flows into the cooling U-shaped frame 7 along the connecting pipe 14. The rainwater is decelerated by the downflow plate 6 to improve the cooling effect of the square steel pipe 1. The water flows to the next cooling U-shaped frame 7 through the first connecting plate 5 and the second connecting plate 12. Water can be transported to the cooling U-shaped frame 7 to cool the square steel pipe 1, thereby reducing the possibility of deformation of the steel structure caused by the high temperature generated by the fire.
[0029] The surface of the square steel pipe 1 is provided with a refractory coating 2, and the surface of the refractory coating 2 is provided with a concrete insulation layer 3. The refractory coating 2 and the concrete insulation layer 3 can improve the fire resistance of the square steel pipe 1. The refractory coating 2 is sprayed on the surface of the square steel pipe 1 through a spraying device.
[0030] The upper and lower ends of the refractory coating 2 are fixedly connected with two limit blocks 11, and the inner top wall and the inner bottom wall of the concrete thermal insulation layer 3 are provided with two limit grooves 10, and the four limit blocks 11 are respectively slidably connected in the four limit grooves 10, and the limit blocks 11 can conveniently put the concrete thermal insulation layer 3 on the surface of the square steel pipe 1 and the refractory coating 2, and the upper and lower ends of the concrete thermal insulation layer 3 are provided with a plurality of connecting bolts 13, and the plurality of connecting bolts 13 respectively movably penetrate the inner top wall and the inner bottom wall of the concrete thermal insulation layer 3, and the plurality of connecting bolts 13 are respectively threadedly connected with the four limit blocks 11. When installing the concrete thermal insulation layer 3, the limit grooves 10 are aligned with the positions of the limit blocks 11, and the concrete thermal insulation layer 3 is put on the square steel pipe 1. The concrete thermal insulation layer 3 can be put on the surface of the square steel pipe 1 by pushing the concrete thermal insulation layer 3. The connecting bolts 13 are rotated, and the connecting bolts 13 pass through the concrete thermal insulation layer 3 and are threadedly inserted into the limit blocks 11, so that the concrete thermal insulation layer 3 and the square steel pipe 1 can be fixed.
[0031] A support plate 9 is fixedly connected between the two cooling U-shaped frames 7, and multiple X-shaped brackets 8 are arranged on both sides of the support plate 9, and the multiple X-shaped brackets 8 are fixedly connected between the two cooling U-shaped frames 7. The X-shaped brackets 8 and the support plate 9 can support and reinforce the two cooling U-shaped frames 7.
[0032] Both side walls of the square steel pipe 1 are fixedly connected with U-shaped concrete insulation boards 4, and the two U-shaped concrete insulation boards 4 are respectively fixed to the two sides of the two cooling U-shaped frames 7. The U-shaped concrete insulation boards 4 can reinforce the cooling U-shaped frames 7 while improving the insulation effect.
[0033] The implementation principle of the above embodiment is as follows: a water storage tank can be set outside the steel structure to receive rainwater brought by the outside world for storage. The outside water tank and the valve cooperate. When a fire occurs, the valve is opened, and the rainwater flows into the cooling U-shaped frame 7 along the connecting pipe 14. The rainwater is decelerated by the downflow plate 6 to improve the cooling effect of the square steel pipe 1. The water flows into the next cooling U-shaped frame 7 through the first connecting plate 5 and the second connecting plate 12. Water can be transported to the cooling U-shaped frame 7 to cool the square steel pipe 1, thereby reducing the possibility of deformation of the steel structure caused by the high temperature generated by the fire.
[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0035] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A fire-resistant steel structure, comprising a square steel tube (1), characterized in that: The inner top wall and the inner bottom wall of the square steel tube (1) are both fixedly connected to a cooling U-shaped frame (7); the inner top wall and the inner bottom wall of the square steel tube (1) are both fixedly connected to a plurality of flow-reducing plates (6), and the plurality of flow-reducing plates (6) are respectively fixed to the inner top wall and the inner top wall of the two cooling U-shaped frames (7); one side of the two cooling U-shaped frames (7) is fixedly connected to a connecting pipe (14), and the two connecting pipes (14) are fixed to the square steel tube (1); the other side of the two cooling U-shaped frames (7) is fixedly connected to a second connecting plate (12); and a first connecting plate (5) is fixedly connected between the inner top wall and the inner bottom wall of the square steel tube (1).
2. A fire-resistant steel structure according to claim 1, characterized in that: The surface of the square steel pipe (1) is provided with a fire-resistant coating (2), and the surface of the fire-resistant coating (2) is provided with a concrete heat-insulating layer (3).
3. A fire-resistant steel structure according to claim 2, characterized in that: The upper and lower ends of the fire-resistant coating (2) are fixedly connected with two limit blocks (11), the inner top wall and the inner bottom wall of the concrete thermal insulation layer (3) are provided with two limit grooves (10), and the four limit blocks (11) are respectively slidably connected in the four limit grooves (10).
4. A fire-resistant steel structure according to claim 3, characterized in that: A plurality of connecting bolts (13) are provided at both upper and lower ends of the concrete heat insulation layer (3); the plurality of connecting bolts (13) are respectively movably inserted through the inner top wall and the inner bottom wall of the concrete heat insulation layer (3); and the plurality of connecting bolts (13) are respectively threadedly connected to the four limit blocks (11).
5. A fire-resistant steel structure according to claim 1, characterized in that: A support plate (9) is fixedly connected between the two cooling U-shaped frames (7), a plurality of X-shaped brackets (8) are provided on both sides of the support plate (9), and the plurality of X-shaped brackets (8) are fixedly connected between the two cooling U-shaped frames (7).
6. A fire-resistant steel structure according to claim 1, characterized in that: Both side walls of the square steel pipe (1) are fixedly connected with U-shaped concrete insulation boards (4), and the two U-shaped concrete insulation boards (4) are respectively fixed to the two sides of the two cooling U-shaped frames (7).