Fire-retardant steel structure for building

Abstract

The application provides a building fire-retardant steel structure, which comprises an I-shaped steel, a heat conduction component, an external protection component, a connecting and fixing mechanism and a bidirectional screw, the inner side of the I-shaped steel is fixedly connected with the heat conduction component, the top and bottom of the heat conduction component are connected with the inner side of the I-shaped steel, the outer side of the I-shaped steel is nested with the external protection component, the inner side of the external protection component is connected with the outer side of the I-shaped steel, the external protection component is arranged on the outer side of the I-shaped steel, the external protection component is fixedly connected with the I-shaped steel, the external protection component can wrap and protect the steel structure, the transverse structure of the steel structure is reinforced through the transverse fixed steel bars, the transverse fracture of the steel structure is avoided, the transverse fixed steel bars are connected with the ring-shaped steel bars through the misaligned connection of the grooves of the ring-shaped steel bars and the inner side of the transverse fixed steel bars, the transverse fixed steel bars are connected with the ring-shaped steel bars, the stability of the internal structure of the steel structure is strengthened, and the stability of the internal structure of the steel structure is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of steel structures, and particularly relates to a building fire-retardant steel structure. BACKGROUND

[0002] A steel structure is a structure composed of steel materials, and is one of main building structure types. The structure is mainly composed of members such as steel beams, steel columns and steel trusses made of profiled steel and steel plates, and the members or parts are usually connected by welding, bolts or rivets. The steel structure is widely used in fields such as large workshops, stadiums and super high-rise buildings due to its light weight and simple construction.

[0003] The existing building fire-retardant steel structure is easy to deform, has poor fire resistance, and melts and deforms when the external temperature is high. In addition, the existing building fire-retardant steel structure has no protection part, has poor load-bearing capacity, has no connecting member, and workers without welding experience have difficulty in installing the steel structure, so that the structure connection is unstable, the structure still has defects, and the steel structure still needs to be further improved. SUMMARY

[0004] The application aims to solve the problems of easy deformation and poor fire resistance, and provides a building fire-retardant steel structure.

[0005] The technical scheme adopted by the application is as follows: a building fire-retardant steel structure, comprising an I-shaped steel, a heat conduction part, an external protection part, a connecting and fixing mechanism and a bidirectional screw, the inner side of the I-shaped steel is fixedly connected with the heat conduction part, the top and bottom of the heat conduction part are connected with the inner side of the I-shaped steel, the outer side of the I-shaped steel is nested with the external protection part, the inner side of the external protection part is connected with the outer side of the I-shaped steel, the outer side of the external protection part is nested with the connecting and fixing mechanism, the inner side of the connecting and fixing mechanism is connected with the outer side of the external protection part, the top front side of the heat conduction part is fixedly connected with a water inlet, the bottom end of the water inlet is connected with the top side of the heat conduction part, the bottom rear side of the heat conduction part is fixedly connected with a water outlet, the top end of the water outlet is connected with the bottom rear side of the heat conduction part, the front of the connecting and fixing mechanism is embedded with a fixed screw, the outer side of the fixed screw is connected with the front inner wall of the connecting and fixing mechanism, the top end of the connecting and fixing mechanism is embedded with the bidirectional screw, and the top of the bidirectional screw is connected with the top inner wall of the connecting and fixing mechanism.

[0006] The internal fixed connection of the external protection component is provided with a concrete layer, the outer side of the concrete layer is connected with the internal part of the external protection component, the internal part of the concrete layer is embedded with a transverse fixed steel bar, the outer side of the transverse fixed steel bar is connected, the bottom of the transverse fixed steel bar is fixedly connected with a ring-shaped steel bar, and the top inner wall of the ring-shaped steel bar is connected with the bottom outer side of the transverse fixed steel bar.

[0007] The internal inner wall of the heat conduction component is embedded with a water guide hole, and the outer side of the water guide hole is connected with the internal inner wall of the heat conduction component.

[0008] The other side of the internal part of the heat conduction component is embedded with a connecting groove, and the outer side of the connecting groove is connected with the other side of the internal part of the heat conduction component.

[0009] One side of the connecting fixed mechanism is fixedly connected with a connecting frame, the other side of the connecting frame is connected with one side of the connecting fixed mechanism, the top end and the bottom end of the connecting frame are embedded with a fixed groove, the outer side of the fixed groove is connected with the top end and the bottom end of the connecting frame, the inner side of the fixed groove is fixedly connected with a fixed block, the top and the bottom of the fixed block are connected with the inner wall of the fixed groove, the other end of the fixed block is fixedly connected with a connecting plate, one end of the connecting plate is connected with the other end of the fixed block, the other side of the connecting plate is fixedly connected with a locking block in front and back, one end of the locking block is connected with the other side of the connecting plate in front and back, the other end of the connecting plate is fixedly connected with a telescopic rod in top and bottom, one end of the telescopic rod is connected with the other end of the connecting plate in top and bottom, the inner side of the locking block is movably connected with a connecting rod, the front and back of the connecting rod are connected with the inner side of the locking block, the front of the locking block is fixedly connected with a threaded connecting column, the rear of the threaded connecting column is connected with the front of the locking block in the middle position, the front of the threaded connecting column is nested with a fixed nut, the inner side of the fixed nut is connected with the outer side of the front of the threaded connecting column, the other end of the connecting rod is fixedly connected with a connecting block, and one end of the connecting block is connected with the other end of the connecting rod in the middle position.

[0010] The internal middle position of the locking block is penetrated with a locking pin, and the outer side of the locking pin is connected with the internal middle inner wall of the locking block.

[0011] The middle position of the bidirectional screw is fixedly connected with a connecting shaft, and the top and the bottom of the connecting shaft are connected with the middle position of the bidirectional screw.

[0012] The two sides of the connecting rod are fixedly connected with movable shafts, and the inner sides of the movable shafts are connected with the two ends of the connecting rod.

[0013] The outer side of the concrete layer is fixedly connected with the asbestos net layer, and the outer side of the asbestos net layer is connected with the inner side of the concrete layer.

[0014] The outer side of the I-shaped steel is embeddedly connected with the thin steel structure fireproof paint, and the inner side of the thin steel structure fireproof paint is connected with the outer side of the I-shaped steel.

[0015] The outer side of the water inlet is nestedly connected with the sealing cover, and the inner side of the sealing cover is connected with the outer side of the water inlet.

[0016] The outer side of the fixed screw is nestedly connected with the rubber pad, and the inner side of the rubber pad is connected with the outer side of the fixed screw.

[0017] The heat conduction component is provided with one, which is arranged on the inner side of the I-shaped steel and fixedly connected with the I-shaped steel.

[0018] The outer protection component is provided with one, which is arranged on the outer side of the I-shaped steel and fixedly connected with the I-shaped steel.

[0019] The connecting and fixing mechanism is provided with two, which is arranged on the outer side of the outer protection component and fixedly connected with the outer protection component.

[0020] The application provides a building flame-retardant steel structure, which comprises an I-shaped steel, a heat conduction component, an outer protection component, a connecting and fixing mechanism and a bidirectional screw.

[0021] Specifically, compared with the prior art, the application has the following beneficial effects:

[0022] 1) In the application, the heat conduction component is arranged on the inner side of the I-shaped steel and fixedly connected with the I-shaped steel.

[0023] 2) In this invention, the external protective component is set on the outside of the I-beam and is fixedly connected to the I-beam. The external protective component can wrap and protect the steel structure, effectively improving the stability of the internal structure of the steel structure.

[0024] 3) In this invention, the connecting and fixing mechanism is located on the outside of the external protective component and is fixedly connected to the external protective component. The connecting and fixing mechanism can connect two steel structures and can connect the two steel structures at different angles. Attached Figure Description

[0025] Figure 1 This is a simplified schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a cross-sectional view of the present invention (AA section).

[0027] Figure 3 This is a simplified cross-sectional diagram of the external protective component of the present invention;

[0028] Figure 4 This is a cross-sectional view of the present invention.

[0029] Figure 5 This is a simplified cross-sectional view of the heat conduction component of the present invention;

[0030] Figure 6 This is a cross-sectional view of the present invention.

[0031] Figure 7 This is a simplified schematic diagram of the connection and fixing mechanism of the present invention;

[0032] Figure 8 This is a simplified cross-sectional diagram of the fixing block and connecting plate of the present invention;

[0033] Figure 9 This is a simplified cross-sectional diagram of the bidirectional screw structure of the present invention.

[0034] The markings in the diagram are: 1. I-beam, 2. Heat conduction component, 3. External protection component, 4. Connecting and fixing mechanism, 5. Two-way screw, 6. Rubber pad, 7. Fixing screw, 8. Drain outlet, 9. Water inlet, 10. Sealing cap, 11. Thin steel structure fireproof coating, 12. Asbestos mesh layer, 13. Horizontal fixing reinforcement, 14. Ring reinforcement, 15. Concrete layer, 16. Water guide hole, 17. Connecting groove, 18. Fixing groove, 19. Connecting frame, 20. Fixing block, 21. Connecting plate, 22. Connecting block, 23. Locking block, 24. Connecting rod, 25. Threaded connecting column, 26. Fixing nut, 27. Telescopic rod, 28. Movable shaft, 29. Locking pin, 30. Connecting shaft. Detailed Implementation

[0035] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0036] Please refer to Figures 1-9 The utility model provides a kind of building fire-retardant steel structure, including I-steel 1, heat conduction component 2, external protection component 3, connecting fixed mechanism 4 and bidirectional screw bolt 5, the inside of I-steel 1 is fixedly connected with heat conduction component 2, the top and bottom of heat conduction component 2 are connected with the inside of I-steel 1, the outside of I-steel 1 is nested with external protection component 3, the inside of external protection component 3 is connected with the outside of I-steel 1, the outside of external protection component 3 is nested with connecting fixed mechanism 4, the inside of connecting fixed mechanism 4 is connected with the outside of external protection component 3, the top end front side of heat conduction component 2 is fixedly connected with inlet 9, the bottom end of inlet 9 is connected with the top end side front of heat conduction component 2, the bottom end rear side of heat conduction component 2 is fixedly connected with drain 8, the top end of drain 8 is connected with the bottom end rear side of heat conduction component 2, the front of connecting fixed mechanism 4 is embedded with fixed screw bolt 7, the outside of fixed screw bolt 7 is connected with the front inner wall of connecting fixed mechanism 4, the top end of connecting fixed mechanism 4 is embedded with bidirectional screw bolt 5, the top of bidirectional screw bolt 5 is connected with the top end inner wall of connecting fixed mechanism 4;

[0037] The inside of external protection component 3 is fixedly connected with concrete layer 15, the outside of concrete layer 15 is connected with the inside of external protection component 3, the inside intermediate part of concrete layer 15 is embedded with transverse fixed reinforcement 13, the outside of transverse fixed reinforcement 13 is connected, the bottom of transverse fixed reinforcement 13 is fixedly connected with ring reinforcement 14, the top inner wall of ring reinforcement 14 is connected with the bottom outside of transverse fixed reinforcement 13;

[0038] The inside inner wall of heat conduction component 2 is embedded with water guide hole 16, the outside of water guide hole 16 is connected with the inside inner wall of heat conduction component 2;

[0039] The inside other side inner wall of heat conduction component 2 is embedded with connecting groove 17, the outside of connecting groove 17 is connected with the inside other side inner wall of heat conduction component 2;

[0040] One side of the connecting and fixing mechanism 4 is fixedly connected with a connecting frame 19, the other side inner wall of the connecting frame 19 is connected with one side of the connecting and fixing mechanism 4, the top end and bottom end middle inner wall of the connecting frame 19 is embeddedly connected with a fixing groove 18, the outer side of the fixing groove 18 is connected with the top end and bottom end middle inner wall of the connecting frame 19, the inner side of the fixing groove 18 is fixedly connected with a fixing block 20, the top and bottom of the fixing block 20 are connected with the inner wall of the fixing groove 18, the other end of the fixing block 20 is fixedly connected with a connecting plate 21, one end of the connecting plate 21 is connected with the other end of the fixing block 20, the other side middle front and back of the connecting plate 21 is fixedly connected with a locking block 23, one end of the locking block 23 is connected with the other side middle front and back of the connecting plate 21, the other end top and bottom of the connecting plate 21 is fixedly connected with a telescopic rod 27, one end of the telescopic rod 27 is connected with the other end top and bottom of the connecting plate 21, the inner side of the locking block 23 is movably connected with a connecting rod 24, the front and back of the connecting rod 24 is connected with the inner side of the locking block 23, the front of the locking block 23 is fixedly connected with a threaded connecting column 25, the back of the threaded connecting column 25 is connected with the front middle position of the locking block 23, the front of the threaded connecting column 25 is nestedly connected with a fixing nut 26, the inner side of the fixing nut 26 is connected with the front outer side of the threaded connecting column 25, the other end of the connecting rod 24 is fixedly connected with a connecting block 22, the one end middle position of the connecting block 22 is connected with the other end of the connecting rod 24.

[0041] The inner middle position of the locking block 23 is penetratedly connected with a locking pin 29, the outer side of the locking pin 29 is connected with the inner middle inner wall of the locking block 23.

[0042] The middle position of the bidirectional screw nail 5 is fixedly connected with a connecting shaft 30, the top and bottom of the connecting shaft 30 is connected with the middle position of the bidirectional screw nail 5, when connecting and fixing the steel structure, the fixed screw nail 7 on the bidirectional screw nail 5 needs to be fixed with another steel structure, the connecting shaft 30 can connect and fix the fixed screw nail 7, when connecting and fixing the fixed screw nail 7 with another steel structure, the fixed screw nail 7 at the top or bottom can be rotated through the connecting shaft 30, which is convenient for the connection between the two steel structures.

[0043] The two sides of the connecting rod 24 is fixedly connected with a movable shaft 28, the inner side of the movable shaft 28 is connected with the two ends of the connecting rod 24, the inner side of the connecting rod 24 is provided with a clamping groove, and the structure of the clamping groove in the connecting rod 24 is same as that of the inner side of the locking block 23, the movable shaft 28 can connect the connecting rod 24 with the locking block 23, so that the connecting rod 24 can be fixed on the inner side of the locking block 23 and can also freely move, the inner part of the movable shaft 28 isolates the contact between the internal components through steel balls, so that the connecting rod 24 can reduce the friction when moving, effectively improving the flexibility of the connecting rod 24 when moving.

[0044] The inner side of the concrete layer 15 is fixedly connected with the asbestos net layer 12, the outer side of the asbestos net layer 12 is connected with the inner side of the concrete layer 15, the concrete layer 15 is a structure layer for protecting or reinforcing the steel structure, the asbestos net layer 12 can enhance the flame retardance of the external protection component 3, the asbestos net layer 12 is a non-combustible material, and the asbestos net layer 12 can isolate the interior of the concrete layer 15 from other components, thereby effectively improving the flame retardance of the concrete layer 15.

[0045] The outer side of the I-shaped steel 1 is embeddedly connected with the thin steel structure fireproof paint 11, the inner side of the thin steel structure fireproof paint 11 is connected with the outer side of the I-shaped steel 1, when the external environment of the steel structure is on fire, the temperature will be conducted to the interior of the I-shaped steel 1 through other components, the thin steel structure fireproof paint 11 is composed of a proper latex polymer as a base material, a flame retardant and an additive, the thin steel structure fireproof paint 11 can expand and foam when on fire, the fireproof and heat insulation layer formed by the expansion and foaming can delay the temperature rise of the steel material, thereby protecting the steel component and effectively improving the service life of the steel structure.

[0046] The outer side of the water inlet 9 is nestedly connected with the sealing cover 10, the inner side of the sealing cover 10 is connected with the outer side of the water inlet 9, when the steel structure is installed, a certain amount of water needs to be injected into the heat conduction component 2, after the certain amount of water is injected, the water inlet 9 and the water outlet 8 need to be covered by the sealing cover 10, the inner side of the sealing cover 10 is provided with a layer of rubber pad to seal the water inlet 9 and the water outlet 8, thereby avoiding the leakage of the liquid in the heat conduction component 2 and effectively improving the sealing property of the sealing cover 10.

[0047] The outer side of the fixing screw 7 is nestedly connected with the rubber pad 6, the inner side of the rubber pad 6 is connected with the outer side of the fixing screw 7, when the steel structure is installed, the two steel structures need to be connected by the fixing screw 7, the rubber pad 6 can isolate the fixing screw 7 from the steel structure and slow down the force of the fixing screw 7 pressing the steel structure, thereby avoiding that the steel structure is pressed by the fixing screw 7 when the fixing screw 7 is tightened, so that the steel structure is deformed, and the integrity of the steel structure is effectively improved.

[0048] A heat conduction component 2 is provided, located inside the I-beam 1 and fixedly connected to it. This component absorbs heat from the I-beam 1 through conduction. During steel structure installation, a certain amount of water is injected through the inlet 9. Water injection is stopped when some water flows out of the drain outlet 8, and then the inlet 9 and drain outlet 8 are blocked by the sealing cap 10. When the external temperature of the steel structure is high, the water inside the water guide hole 16 and connecting groove 17 absorbs the heat conducted by the steel structure and, when the temperature of the I-beam 1 is high, absorbs the internal temperature of the I-beam 1, preventing excessively high internal temperatures that could cause the metal-supported steel structure to melt and deform, effectively reducing the internal temperature of the steel structure.

[0049] An external protective component 3 is provided, which is located on the outside of the I-beam 1 and is fixedly connected to the I-beam 1. The external protective component 3 can wrap and protect the steel structure. After the steel structure is installed, the outer frame of the steel structure is supported and protected by the ring steel bar 14. The transverse structure of the steel structure is reinforced by the transverse fixing steel bar 13 to prevent transverse fracture of the steel structure. The groove of the ring steel bar 14 and the groove on the inner side of the transverse fixing steel bar 13 are misaligned and connected, so that the transverse fixing steel bar 13 and the ring steel bar 14 are connected, which strengthens the stability of the internal structure of the steel structure and effectively improves the stability of the internal structure of the steel structure.

[0050] The connecting and fixing mechanism 4 is provided with two, and is arranged outside the external protection part 3, and is fixedly connected with the external protection part 3, and can connect two steel structures, and can connect the two steel structures at different angles. When the steel structures are connected and installed, the connecting frame 19 on the connecting and fixing mechanism 4 is nested on one of the steel structures, and the two steel structure connection positions are connected and fixed by the bidirectional screw 5, and then the other three surfaces of the connecting frame 19 are connected and fixed by the fixing screw 7. When one end or the other end of a steel structure is connected with another steel structure, the protrusions on the top and bottom of the fixing block 20 are clamped in the fixing groove 18, and then the connecting plate 21 is connected and fixed with the fixing block 20 by the fixing screw 7. The connected connecting and fixing mechanism 4 is nested on the other end of the steel structure, and the connecting frame 19 on the connecting and fixing mechanism 4 is connected and fixed with the steel structure by the fixing screw 7, and then the connecting block 22 on the connecting and fixing mechanism 4 is connected with the other steel structure by the bidirectional screw 5. Then the angle of the other steel structure is adjusted, and then the locking pin 29 is inserted into the locking block 23, and the clamping block on the locking pin 29 is connected with the clamping groove in the locking block 23 and the connecting rod 24. The position of the connecting rod 24 is locked, so that the other steel structure is locked. The threaded connecting column 25 connected with the locking pin 29 is connected and fixed by the fixing nut 26, and the locking pin 29 is fixed. The staff without welding experience or without welding can freely connect and fix the two steel structures, and the convenience of the steel structure connection is effectively improved.

[0051] Working principle: first, check the connection between the heat conduction part 2 and the I-beam 1, and inject a certain amount of water into the heat conduction part 2. The heat conduction part 2 is provided with one, and is arranged inside the I-beam 1, and is fixedly connected with the I-beam 1. The heat conduction part 2 can absorb the heat in the I-beam 1 by conduction. When installing the steel structure, a certain amount of water is injected through the water inlet 9, and the injection is stopped when part of the water flows out of the water outlet 8, and then the water inlet 9 and the water outlet 8 are blocked by the sealing cover 10. When the temperature outside the steel structure is very high, the water in the water guide hole 16 and the connecting groove 17 can absorb the temperature conducted by the steel structure, and when the temperature of the I-beam 1 is very high, the temperature in the I-beam 1 can be absorbed, so as to avoid the melting and deformation of the metal support steel structure caused by the high temperature in the steel structure, and effectively reduce the temperature in the steel structure;

[0052] Then, cover the sealing cover 10, the outer side of the water inlet 9 is nested with the sealing cover 10, the inner side of the sealing cover 10 is connected with the outer side of the water inlet 9, when installing the steel structure, a certain amount of water needs to be injected into the heat conduction component 2, after a certain amount of water is injected, the water inlet 9 and the drain port 8 need to be covered by the sealing cover 10, the inner side of the sealing cover 10 is provided with a layer of rubber pad to seal the water inlet 9 and the drain port 8, avoid the liquid in the heat conduction component 2 from leaking, effectively improve the sealing performance of the sealing cover 10;

[0053] Then, check the stability of the external protection component 3, the external protection component 3 is provided with one, the external protection component 3 is arranged on the outer side of the I-beam 1, the external protection component 3 is fixedly connected with the I-beam 1, the external protection component 3 can wrap and protect the steel structure, after the steel structure is installed, the external frame of the steel structure is supported and protected by the ring-shaped reinforcement 14, the transverse structure of the steel structure is reinforced by the transverse fixing reinforcement 13 to avoid the transverse fracture of the steel structure, the transverse fixing reinforcement 13 and the ring-shaped reinforcement 14 are connected through the misalignment connection of the groove of the ring-shaped reinforcement 14 and the groove in the inner side of the transverse fixing reinforcement 13, the stability of the internal structure of the steel structure is effectively improved.

[0054] Next, check whether the bidirectional screw 5 is damaged, the connecting shaft 30 is fixedly connected at the middle position of the bidirectional screw 5, the top and bottom of the connecting shaft 30 are connected with the middle position of the bidirectional screw 5, when connecting and fixing the steel structure, the fixed screw 7 on the bidirectional screw 5 needs to be fixed with another steel structure, the connecting shaft 30 can connect and fix the fixed screw 7, when connecting and fixing the fixed screw 7 with another steel structure, the fixed screw 7 at the top or bottom can be rotated through the connecting shaft 30, which is convenient for the connection between the two steel structures.

[0055] Finally, the two steel structures are connected and fixed by connecting and fixing mechanism 4, two connecting and fixing mechanisms 4 are arranged outside external protection part 3, connecting and fixing mechanism 4 is fixedly connected with external protection part 3, connecting and fixing mechanism 4 can connect two steel structures, and the two steel structures can be connected at different angles, when the steel structures are connected and installed, when the two vertical steel structures are connected, first, connect frame 19 on connecting and fixing mechanism 4 is nested on one of the steel structures, two steel structures are connected and fixed by two-way screw 5, then, the other three surfaces of connect frame 19 are connected and fixed by fixed screw 7, when one end or the other end of one steel structure is connected with other steel structures, first, the convex blocks on the top and bottom of fixed block 20 are clamped in the inner side of fixed slot 18, then, connecting plate 21 is connected and fixed with fixed block 20 by fixed screw 7, one end of the connected connecting and fixing mechanism 4 is nested in the other end of the steel structure, connecting frame 19 on connecting and fixing mechanism 4 is connected and fixed with the steel structure by fixed screw 7, then, connecting block 22 on connecting and fixing mechanism 4 is connected with the other steel structure by two-way screw 5, then, the angle of the other steel structure is adjusted, then, locking pin 29 is passed through the inner side of locking block 23, the clamping block on locking pin 29 is connected with the clamping slot in locking block 23 and connecting rod 24, the position of connecting rod 24 is locked, the other steel structure is locked, threaded connecting column 25 connected with locking pin 29 is connected by fixed nut 26, and locking pin 29 is fixed, the staff without welding experience or without welding can freely connect and fix the two steel structures, and the convenience of the steel structure connection is effectively improved.

[0056] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire resistant steel structure for construction, comprising an I-beam (1), a heat conducting member (2), an outer protective member (3), a connecting and fixing mechanism (4), and a two-way screw (5), characterized in that: A heat conduction component (2) is fixedly connected to the inner side of the I-beam (1). The top and bottom of the heat conduction component (2) are connected to the inner side of the I-beam (1). An external protective component (3) is nested and connected to the outer side of the I-beam (1). The inner side of the external protective component (3) is connected to the outer side of the I-beam (1). A connecting and fixing mechanism (4) is nested and connected to the outer side of the external protective component (3). The inner side of the connecting and fixing mechanism (4) is connected to the outer side of the external protective component (3). A water inlet (9) is fixedly connected to the front side of the top of the heat conduction component (2). The bottom end of 9) is connected to the front side of the top end of the heat conduction component (2). A drain outlet (8) is fixedly connected to the rear side of the bottom end of the heat conduction component (2). The top end of the drain outlet (8) is connected to the rear side of the bottom end of the heat conduction component (2). A fixing screw (7) is embedded in the front of the connecting fixing mechanism (4). The outer side of the fixing screw (7) is connected to the inner wall of the front of the connecting fixing mechanism (4). A bidirectional screw (5) is embedded in the top of the connecting fixing mechanism (4). The top of the bidirectional screw (5) is connected to the inner wall of the top of the connecting fixing mechanism (4). The outer protective component (3) is internally fixedly connected to a concrete layer (15). The outer side of the concrete layer (15) is connected to the interior of the outer protective component (3). A transverse fixed steel bar (13) is embedded in the middle part of the interior of the concrete layer (15). The outer side of the transverse fixed steel bar (13) is connected. A ring steel bar (14) is fixedly connected to the bottom of the transverse fixed steel bar (13). The top inner wall of the ring steel bar (14) is connected to the bottom outer side of the transverse fixed steel bar (13). The inner wall of the heat conduction component (2) is embedded with a water guide hole (16), and the outer side of the water guide hole (16) is connected to the inner wall of the heat conduction component (2). A connecting groove (17) is embedded in the inner wall of the other side of the heat conduction component (2), and the outer side of the connecting groove (17) is connected to the inner wall of the other side of the heat conduction component (2). A connecting frame (19) is fixedly connected to one side of the connecting and fixing mechanism (4). The inner wall of the other side of the connecting frame (19) is connected to one side of the connecting and fixing mechanism (4). A fixing groove (18) is embedded in the middle inner wall between the top and bottom ends of the connecting frame (19). The outer side of the fixing groove (18) is connected to the middle inner wall between the top and bottom ends of the connecting frame (19). A fixing block (20) is fixedly connected to the inner side of the fixing groove (18). The top and bottom of the fixing block (20) are connected to the inner wall of the fixing groove (18). A connecting plate (21) is fixedly connected to the other end of the fixing block (20). One end of the connecting plate (21) is connected to the other end of the fixing block (20). A locking block (23) is fixedly connected to the front and back of the middle of the other side of the connecting plate (21). One end of the locking block (23) is connected to the front and back of the middle of the other side of the connecting plate (21). The connecting plate (21) is connected to the top and bottom of the other end with a telescopic rod (27). One end of the telescopic rod (27) is connected to the top and bottom of the other end of the connecting plate (21). The locking block (23) is movably connected to a connecting rod (24). The front and back of the connecting rod (24) are connected to the inside of the locking block (23). The front of the locking block (23) is fixedly connected to a threaded connecting post (25). The back of the threaded connecting post (25) is connected to the middle position of the front of the locking block (23). The front of the threaded connecting post (25) is nested with a fixing nut (26). The inside of the fixing nut (26) is connected to the outside of the front of the threaded connecting post (25). The other end of the connecting rod (24) is fixedly connected to a connecting block (22). The middle position of one end of the connecting block (22) is connected to the other end of the connecting rod (24). A locking pin (29) is connected through the middle of the interior of the locking block (23), and the outer side of the locking pin (29) is connected to the inner wall of the middle of the interior of the locking block (23).

2. A fire resistant steel building structure as claimed in claim 1, wherein: The connecting rod (24) is fixedly connected to two sides of a movable shaft (28), and the inner side of the movable shaft (28) is connected to both ends of the connecting rod (24).

3. The flame-retardant steel structure for building as described in claim 1, characterized in that: An asbestos mesh layer (12) is fixedly connected to the inside and outside of the concrete layer (15), and the outside of the asbestos mesh layer (12) is connected to the inside and outside of the concrete layer (15).

4. The flame-retardant steel structure for building as described in claim 1, characterized in that: A thin steel structure fireproof coating (11) is embedded and connected to the outside of the I-beam (1), and the inside of the thin steel structure fireproof coating (11) is connected to the outside of the I-beam (1).

5. A flame-retardant steel structure for building as described in claim 1, characterized in that: A sealing cap (10) is nested on the outside of the water inlet (9), and the inside of the sealing cap (10) is connected to the outside of the water inlet (9).

6. A flame-retardant steel structure for building as described in claim 1, characterized in that: A rubber pad (6) is nested on the outside of the fixing screw (7), and the inside of the rubber pad (6) is connected to the outside of the fixing screw (7).

7. A flame-retardant steel structure for building as described in claim 1, characterized in that: One heat conduction component (2) is provided, and the heat conduction component (2) is located on the inner side of the I-beam (1). The heat conduction component (2) is fixedly connected to the I-beam (1).

8. A flame-retardant steel structure for building as described in claim 1, characterized in that: One external protective component (3) is provided. The external protective component (3) is located on the outside of the I-beam (1) and is fixedly connected to the I-beam (1).

9. A flame-retardant steel structure for building as described in claim 8, characterized in that: There are two connecting and fixing mechanisms (4). The connecting and fixing mechanisms (4) are located on the outside of the external protective component (3). The connecting and fixing mechanisms (4) are fixedly connected to the external protective component (3).

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