Fire protection structure of steel frame glass partition and glass curtain wall node

Abstract

The fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention comprises a steel keel located indoors, a steel pressure plate and decorative cover located outdoors, a fireproof glass fixed between the steel keel and the steel pressure plate and decorative cover, a first fireproof felt with a combustion performance of Class A fixedly arranged on the inner surface of the steel pressure plate and decorative cover and between the steel pressure plate and decorative cover and the fireproof glass, a second fireproof felt with a combustion performance of Class A fixedly arranged on the outer surface of the steel keel and between the steel keel and the fireproof glass, and an air layer is arranged between the first fireproof felt and the second fireproof felt to prevent the steel pressure plate and decorative cover from being connected to the steel keel. The fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention can block fire and smoke when a fire occurs, and can effectively delay the transfer of high-temperature heat of the fire from the high-temperature side to the low-temperature side, thereby reducing damage to the entire curtain wall steel structure, and protecting the entire curtain wall steel structure from deformation and collapse due to rapid temperature rise.

Description

Technical Field

[0001] The invention relates to a fireproof structure, in particular to a fireproof structure of a steel keel glass partition and a glass curtain wall node. Background Art

[0002] In recent years, fires have occurred in curtain wall projects of high-rise buildings. In order to make the glass curtain walls and glass partitions in curtain wall projects have fire protection functions, the existing technology adopts the following Figure 1 The structure shown in the figure uses a steel keel 1' in combination with fireproof glass 3', a steel pressing plate and decorative cover 2', a sealing strip 4', a rubber heat-insulating pad 5', etc. to form a glass partition and a glass curtain wall with fireproof function.

[0003] Among them, the sealing strip is made of flame-retardant rubber, which is a non-combustible organic material with a combustion performance of Class B, and the combustion performance of the rubber insulation pad is below Class B. The combination of the sealing strip and the rubber insulation pad is the component with the worst fire resistance in the entire curtain wall system. It will fail under high temperature conditions of 400 to 500 degrees Celsius in a fire, and cannot block fire and smoke, and cannot protect the curtain wall steel structure. This will cause the entire curtain wall steel structure to deform and collapse, endangering personal and property safety. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a fireproof structure of steel-frame glass partitions and glass curtain wall nodes, which can block fire and smoke when a fire occurs, and can effectively delay the transfer of high-temperature heat from the high-temperature side to the low-temperature side, thereby reducing damage to the entire curtain wall steel structure and protecting the entire curtain wall steel structure from deformation and collapse due to rapid temperature rise.

[0005] The fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention comprises a steel keel located indoors, a steel pressure plate and decorative cover located outdoors, and fireproof glass fixed between the steel keel and the steel pressure plate and decorative cover, a first fireproof felt with a combustion performance of Class A is fixedly arranged on the inner surface of the steel pressure plate and decorative cover and between the steel pressure plate and decorative cover and the fireproof glass, a second fireproof felt with a combustion performance of Class A is fixedly arranged on the outer surface of the steel keel and between the steel keel and the fireproof glass, and an air layer is arranged between the first fireproof felt and the second fireproof felt to prevent the steel pressure plate and decorative cover from being connected to the steel keel.

[0006] The fireproof structure of the steel-frame glass partition and glass curtain wall node of the present invention, wherein the first fireproof felt and the second fireproof felt are inorganic fiber felts with a thermal conductivity of less than or equal to 0.03W / (m*K) at room temperature.

[0007] The fireproof structure of the steel-frame glass partition and glass curtain wall node of the present invention, wherein the thermal conductivity of the first fireproof felt and the second fireproof felt is less than or equal to 0.09 W / (m*K) when the outdoor average temperature is 500°C.

[0008] The fireproof structure of the steel-frame glass partition and glass curtain wall node of the present invention, wherein the material of the first fireproof felt and the second fireproof felt is aluminum carbonate felt, ceramic fiber felt, rock wool felt or aerogel felt.

[0009] The fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention, wherein the second fireproof felt is bonded and sealed on the steel keel by fireproof sealant to form an integral body with the steel keel, and the first fireproof felt is bonded and sealed on the steel pressing plate and the decorative cover by fireproof sealant to form an integral body with the steel pressing plate and the sealing cover, and the two are connected together by screw fasteners.

[0010] The fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention, wherein the fireproof glass is fixed between the steel keel, the steel pressure plate and the decorative cover by fireproof sealant, and the fireproof sealant bonds and seals the first fireproof felt and the second fireproof felt between the fireproof glass and the steel keel, the steel pressure plate and the decorative cover.

[0011] The fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention, wherein the steel keel is a steel square tube which does not need secondary processing.

[0012] The fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention is different from the prior art in that the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention adopts the first and second fireproof felts with combustion performance of Class A, an air layer is arranged between the first and second fireproof felts, and fireproof sealant is also arranged between the fireproof glass and the steel keel, and between the fireproof glass and the steel pressure plate and the decorative cover. The flexibility of the first fireproof felt and the second fireproof felt is utilized to form a continuous fireproof effect from fireproof glass to fireproof glass, which can block fire and smoke, and can effectively delay the high temperature heat brought by the fire from the high temperature side steel structure of the fire area to the low temperature side steel structure, thereby protecting the entire curtain wall steel structure from deformation and collapse due to rapid temperature rise. Regardless of whether the fire occurs on the indoor side or the outdoor side, or occurs on both sides at the same time, at least one of the first fireproof felt and the second fireproof felt is close to the flame, which protects the glass partition and the glass curtain wall structure, and can greatly improve the fireproof performance at high temperature of the fire.

[0013] In the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention, the thermal conductivity of the first fireproof felt and the second fireproof felt at room temperature is ≤0.03W / (m*K); when the average temperature reaches 500 degrees Celsius, the thermal conductivity is ≤0.09W / (m*K); the fireproof sealant bonds and seals the first and second fireproof felts between the fireproof glass and the steel keel, the steel pressure plate and the decorative cover; the first fireproof felt and the second fireproof felt have good compatibility with the fireproof sealant, and the fireproof sealant can further enhance the smoke-proof sealing effect.

[0014] In the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention, the steel keel is a steel square tube that does not require secondary processing, which reduces the installation difficulty of the first fireproof felt and the second fireproof felt and saves installation time.

[0015] The fireproof structure of the steel frame glass partition and the glass curtain wall node of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the fire protection structure of the steel keel glass partition and glass curtain wall node in the prior art;

[0017] Figure 2 It is a schematic diagram of the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention;

[0018] Figure 3 The thermal analysis diagram of the fire-proof structure of the steel keel glass partition and glass curtain wall node in the prior art at 400 degrees Celsius outdoors and the surface temperature diagram of the steel keel indoors;

[0019] Figure 4 for Figure 3 A partial enlarged view of

[0020] Figure 5 The thermal analysis diagram of the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention at 400 degrees Celsius outdoors and the surface temperature diagram of the steel keel indoors;

[0021] Figure 6 for Figure 5 A partial enlarged view of

[0022] Figure 7 The thermal analysis diagram of the fire-proof structure of the steel keel glass partition and glass curtain wall node in the prior art at 500 degrees Celsius outdoors and the surface temperature diagram of the indoor steel keel;

[0023] Figure 8 for Figure 7 A partial enlarged view of

[0024] Fig. 9The thermal analysis diagram of the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention at 500 degrees Celsius outdoors and the surface temperature diagram of the indoor steel keel;

[0025] Fig.10 for Fig. 9 A partial enlarged view of

[0026] Fig.11 The thermal analysis diagram of the fire-proof structure of the steel keel glass partition and glass curtain wall node in the prior art at 400 degrees Celsius indoors and the surface temperature diagram of the outdoor steel pressing plate and decorative cover;

[0027] Fig.12 for Fig.11 A partial enlarged view of

[0028] Fig.13 The thermal analysis diagram of the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention at 400 degrees Celsius indoors and the surface temperature diagram of the outdoor steel pressing plate and decorative cover;

[0029] Fig.14 for Fig.13 A partial enlarged view of

[0030] Fig.15 The thermal analysis diagram of the fire-proof structure of the steel keel glass partition and glass curtain wall node in the prior art at 500 degrees Celsius indoors and the surface temperature diagram of the outdoor steel pressing plate and decorative cover;

[0031] Fig.16 for Fig.15 A partial enlarged view of

[0032] Fig.17 The thermal analysis diagram of the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention at 500 degrees Celsius indoors and the surface temperature diagram of the outdoor steel pressing plate and decorative cover;

[0033] Fig.18 for Fig.17 A partial enlarged view of . DETAILED DESCRIPTION

[0034] like Figure 2As shown, the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention includes a steel keel 1 located indoors, a steel pressure plate and decorative cover 2 located outdoors, and a fireproof glass 3, wherein the fireproof glass 3 is fixed between the steel keel 1 and the steel pressure plate and decorative cover 2 by a fireproof sealant 4, a first fireproof felt 5 is fixedly provided on the inner surface of the steel pressure plate and decorative cover 2 and between the steel pressure plate and decorative cover 2 and the fireproof glass 3, a second fireproof felt 8 is fixedly provided on the outer surface of the steel keel 1 and between the steel keel 1 and the fireproof glass 3, and an air layer 7 is provided between the first fireproof felt 5 and the second fireproof felt 8 to prevent the steel pressure plate and decorative cover 2 from being connected to the steel keel 1. The first fireproof felt 5 and the second fireproof felt 8 are inorganic fiber felts with a thermal conductivity of less than or equal to 0.03W / (m*K) at room temperature and a combustion performance of Class A, such as aluminum carbonate felt, ceramic fiber felt, rock wool felt or aerogel felt. The thermal conductivity of the first fireproof felt 5 and the second fireproof felt 8 is less than or equal to 0.09W / (m*K) when the outdoor average temperature is 500°C. The unit of thermal conductivity is watt / (meter*degree). The second fireproof felt 8 is bonded and sealed on the steel keel 1 by fireproof sealant 4 to form an integral body, and the first fireproof felt 5 is bonded and sealed on the steel pressure plate and decorative cover 2 by fireproof sealant 4 to form another body, and the two are connected together by screw fasteners 6. In the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention, the steel keel 1 is a steel square tube that does not require secondary processing, and the surface is flush, which can reduce the difficulty of installing the first fireproof felt and the second fireproof felt, and save installation time.

[0035] The fireproof structure of the steel keel glass partition and the glass curtain wall node of the present invention uses a first fireproof felt and a second fireproof felt which are flexible and non-combustible with a combustion performance of Class A, and fireproof sealant is applied on the outer sides of the first fireproof felt and the second fireproof felt. The thermal conductivity of the first fireproof felt and the second fireproof felt is ≤0.03W / (m*K) at room temperature; when the average temperature reaches 500 degrees Celsius, the thermal conductivity is ≤0.09W / (m*K), and the unit of thermal conductivity is watt / (meter*degree). Therefore, when a fire occurs, it can block fire and smoke, and effectively delay the rapid transmission of high temperature brought by the fire from the high-temperature side steel structure of the fire area to the low-temperature side steel structure (the steel keel, the steel pressure plate and the decorative cover are all steel structures), thereby protecting the entire curtain wall steel structure from deformation and collapse due to the rapid temperature rise.

[0036] Figure 1The prior art structure shown is very likely to form a smoke channel when a fire occurs, and quickly transfer the toxic smoke generated on the side where the fire occurs to the other side, and the prior art structure will quickly transfer the high temperature from the fire side to the other side through air convection. Regardless of whether the fire occurs indoors or outdoors, or occurs on both sides at the same time, since in the structure of the present invention, at least one of the first fireproof felt and the second fireproof felt is close to the flame, it can further protect the glass partition and the glass curtain wall structure, greatly improving the fireproof performance at high temperatures in fires. The fireproof structure of the steel keel glass partition and the glass curtain wall node of the present invention utilizes the flexibility of the first fireproof felt and the second fireproof felt to form a continuous fireproof effect from fireproof glass to fireproof glass, and the first fireproof felt and the second fireproof felt have good compatibility with the fireproof sealant, relying on the fireproof sealant to achieve the effect of smokeproof sealing, and basically does not need to change the structure of the existing fireproof curtain wall, the overall cost is low, the installation is convenient, and the fireproof performance of the curtain wall is greatly improved.

[0037] like Figure 3 , 4 As shown in the figure, the fire-proof structure of the steel keel glass partition and glass curtain wall node in the prior art has a surface temperature of 100°C when the outdoor temperature is 400°C. Figure 5 , 6 As shown in FIG. 1 , when the outdoor temperature of the fire-proof structure of the steel keel glass partition and glass curtain wall node of the present invention is 400°C, the surface temperature of the steel keel is 65.4°C. Figure 7 , 8 As shown in the figure, the fire-proof structure of the steel keel glass partition and glass curtain wall node in the prior art has a surface temperature of 121°C when the outdoor temperature is 500°C. Fig. 9 , 10 As shown in the figure, when the outdoor temperature is 500°C, the surface temperature of the steel keel is 77°C for the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention. Fig.11 , 12 As shown in the figure, when the indoor temperature of the fire-proof structure of the steel keel glass partition and glass curtain wall node in the prior art is 400°C, the surface temperature of the steel pressing plate and the decorative cover is 143°C. Fig.13 , 14 As shown in the figure, the surface temperature of the steel pressing plate and the decorative cover of the fireproof structure of the steel keel glass partition and the glass curtain wall node of the present invention is 101.2°C when the indoor temperature is close to 400°C. Fig.15 , 16 As shown in the figure, the fire-proof structure of the steel keel glass partition and glass curtain wall node in the prior art has a surface temperature of 174.6°C when the indoor temperature is 500°C. Fig.17 , 18As shown, when the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention is 500°C outdoors, the surface temperature of the steel pressing plate and the decorative cover is 120.3°C.

[0038] Depend on Figure 3 , 5 By comparison, it can be seen that the surface temperature of the steel keel of the present invention is nearly 35°C lower than that of the steel keel of the prior art, and the heat transfer is reduced. Figure 7 , 9 By comparison, it can be seen that the surface temperature of the steel keel of the present invention is 44°C lower than that of the steel keel of the prior art, and the heat transferred from the outside to the surface of the steel keel is also reduced. Fig.11 , 13 By comparison, it can be seen that the surface temperature of the steel pressing plate and the decorative cover of the present invention is lower by nearly 42°C than that of the steel pressing plate and the decorative cover of the prior art, and the heat transfer is reduced. Fig.15 , 17 By comparison, it can be seen that the surface temperature of the steel platen and decorative cover of the present invention is nearly 54°C lower than that of the steel platen and decorative cover of the prior art, and the heat transferred from the room to the surface of the steel platen and decorative cover is also reduced. Therefore, compared with the prior art, in the fireproof structure of the steel keel glass partition and glass curtain wall node of the present invention, a continuous heat barrier is formed between the outdoor steel platen and decorative cover and the indoor steel keel, reducing the transfer of heat. The first fireproof felt and the second fireproof felt will not fail at a high temperature of 500°C, and will not cause the fire to grow due to the loss of airtightness and the influx of a large amount of oxygen, thereby improving the safety of the steel structure.

[0039] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A fireproof structure of a steel keel glass partition and a glass curtain wall node, comprising a steel keel (1) located indoors, a steel pressing plate and a decorative cover (2) located outdoors, and a fireproof glass (3) fixed between the steel keel (1) and the steel pressing plate and the decorative cover (2), characterized in that: A first fireproof felt (5) with a combustion performance of Class A is fixedly installed on the inner surface of the steel pressure plate and decorative cover (2) and between the steel pressure plate and decorative cover (2) and the fireproof glass (3); a second fireproof felt (8) with a combustion performance of Class A is fixedly installed on the outer surface of the steel keel (1) and between the steel keel (1) and the fireproof glass (3); an air layer (7) is provided between the first fireproof felt (5) and the second fireproof felt (8) to prevent the steel pressure plate and decorative cover (2) from being connected to the steel keel (1).

2. The fireproof structure of the steel keel glass partition and glass curtain wall node according to claim 1 is characterized by: The first fireproof felt (5) and the second fireproof felt (8) are inorganic fiber felts having a thermal conductivity of less than or equal to 0.03 W / (m*K) at room temperature.

3. The fireproof structure of the steel keel glass partition and glass curtain wall node according to claim 2 is characterized by: The thermal conductivity of the first fireproof felt (5) and the second fireproof felt (8) is less than or equal to 0.09 W / (m*K) when the outdoor average temperature is 500°C.

4. The fireproof structure of the steel keel glass partition and glass curtain wall node according to claim 3 is characterized by: The first fireproof felt (5) and the second fireproof felt (8) are made of aluminum carbonate felt, ceramic fiber felt, rock wool felt or aerogel felt.

5. The fireproof structure of the steel keel glass partition and glass curtain wall node according to claim 4 is characterized by: The first fireproof felt (5) and the second fireproof felt (8) are connected to the steel keel (1), the steel pressing plate and the decorative cover (2) through screw fasteners (6).

6. The fireproof structure of the steel keel glass partition and glass curtain wall node according to claim 5 is characterized by: The fireproof glass (3) is fixed between the steel keel (1) and the steel pressing plate and the decorative cover (2) by means of a fireproof sealant (4), and the fireproof sealant (4) bonds and seals the first fireproof felt (5) and the second fireproof felt (8) between the fireproof glass (3) and the steel keel (1) and the steel pressing plate and the decorative cover (2).

7. The fireproof structure of the steel frame glass partition and glass curtain wall node according to any one of claims 1 to 6, characterized in that: The steel keel (1) is a steel square tube that does not require secondary processing.

Images