Steel beam fireproof structure and mounting method

Abstract

The invention relates to the technical field of steel beam fireproof construction, and discloses a steel beam fireproof structure and a mounting method, and the steel beam fireproof structure comprises a steel beam, a connecting piece, a fireproof coating structure and fasteners. The steel beam comprises an upper flange plate and a lower flange plate; the plurality of connecting pieces are mounted on the inner walls of the upper flange plate and the lower flange plate; the fireproof coating structure is arranged on the steel beam in a sleeving manner, and a mounting hole is formed in the fireproof coating structure; and fasteners are mounted in the mounting holes and penetrate through the fireproof coating structure to be connected with the steel beam or the connecting piece. Through the arrangement, a heat conduction path formed by metal connecting pieces such as angle steel and fasteners in a fire disaster is isolated, heat is prevented from being transmitted into the steel beam through the metal heat bridge, the fire endurance is remarkably improved, and the fireproof performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel beam fireproof construction, and particularly relates to a steel beam fireproof structure and a mounting method. BACKGROUND

[0002] Steel structure buildings are widely used due to their high strength and fast construction, but the mechanical properties of steel materials are rapidly degraded under high temperature of fire, which easily causes collapse accidents. Therefore, it is necessary to perform fireproof coating construction on the I-beam. Common steel structure I-beam fireproof coating construction: L-shaped angle steels are symmetrically installed on both sides of the upper flange of the I-beam, and the angle steels are connected with the flange through welding. The inner side of the web of the I-beam is filled with fireproof materials such as rock wool, perlite and vermiculite. A joint plate strip is installed between the fireproof panel and the fireproof filling material (plate structure) for fixing the fireproof panel and enhancing the structural strength. The fireproof panel is fixed on the joint plate strip by self-tapping screws. In order to enhance the fixed connection of the lower panel, a corner guard strip is installed on both sides and fixed by self-tapping screws. In actual construction, the corner guard strip is generally an L-shaped light steel keel.

[0003] However, in the above construction process, the fireproof plate is generally fixed on the steel structure beam by welding angle steels and fastening screws, which not only increases the working strength during construction, but also exposes the metal parts to form a heat bridge effect, which easily reduces the fireproof effect by transferring heat to the inside. SUMMARY

[0004] Therefore, the present application provides a steel beam fireproof structure and a mounting method to solve the problem that the fireproof plate is generally fixed on the steel structure beam by welding angle steels and fastening screws, which not only increases the working strength during construction, but also exposes the metal parts to form a heat bridge effect, which easily reduces the fireproof effect by transferring heat to the inside.

[0005] In a first aspect, the present application provides a steel beam fireproof structure and a mounting method, comprising:

[0006] The steel beam comprises an upper flange plate and a lower flange plate;

[0007] The connecting piece is provided with a plurality of connecting pieces, and the plurality of connecting pieces are installed on the inner walls of the upper flange plate and the lower flange plate;

[0008] The fireproof coating structure is sleeved outside the steel beam and the connecting piece, and the fireproof coating structure is provided with a mounting hole;

[0009] The nail is installed in the mounting hole and penetrates the fireproof coating structure to connect with the steel beam or the connecting piece.

[0010] Beneficial effects: Through the above arrangement, the connecting piece is located in the hidden installation inside the steel beam flange wall surface, which is completely wrapped by the fireproof covering structure. After the shot pin is fixed through the mounting hole of the fireproof covering structure, it is also embedded in the fireproof covering structure. The heat conduction path formed by the metal connecting piece such as angle steel and shot pin in the fire is isolated, and the heat is prevented from being transmitted to the inside of the steel beam through the metal heat bridge, which significantly improves the fire resistance limit and improves the fireproof performance. And using shot pin to directly fix the connecting piece and fireproof plate, the construction is efficient and convenient, which significantly reduces the labor and time cost. Four L-shaped angle steels are symmetrically installed to provide standardized anchoring points and simplify the positioning process.

[0011] In an alternative embodiment, the fireproof covering structure comprises:

[0012] a fireproof inner plate arranged between the upper flange plate and the lower flange plate, the end of the fireproof inner plate being fixed on the connecting piece;

[0013] two fireproof panels arranged on the outer walls of the upper flange plate and the lower flange plate on both sides of the steel beam;

[0014] a fireproof bottom plate installed at the bottom end of the steel beam, the two ends of the fireproof bottom plate being connected with the fireproof panels respectively.

[0015] In an alternative embodiment, a first mounting hole is formed in the fireproof inner plate, and the shot pin is arranged in the first mounting hole and penetrates the fireproof inner plate and the connecting piece to fix the fireproof inner plate on the connecting piece.

[0016] In an alternative embodiment, a second mounting hole is formed in the fireproof panel corresponding to the upper flange plate, and the shot pin is arranged in the second mounting hole and penetrates the fireproof panel and the upper flange plate to fix the fireproof panel on the steel beam.

[0017] A third mounting hole is formed in the fireproof panel corresponding to the fireproof bottom plate, and the shot pin is arranged in the third mounting hole and penetrates the fireproof panel and the fireproof bottom plate to fix the fireproof bottom plate on the fireproof panel.

[0018] In an alternative embodiment, the fireproof covering structure further comprises a fireproof and heat insulation film layer installed on the side of the fireproof panel and the fireproof bottom plate close to the steel beam.

[0019] In an alternative embodiment, it further comprises a first sound insulation piece and a second sound insulation piece, the first sound insulation piece being installed on the upper flange plate, and the first sound insulation piece being installed between the upper flange plate and the fireproof covering structure.

[0020] The second sound insulation member is installed on the lower flange plate, and the second sound insulation member is installed between the lower flange plate and the fireproof cladding structure.

[0021] Beneficial effect: The fireproof inner plate, the fireproof panel, the fireproof bottom plate, the first sound insulation member, the second sound insulation member and the fireproof heat insulation film layer form a full cladding structure, which encloses the steel beam and the connecting member inside, insulates the heat conduction path formed by the angle steel and other metal connecting members in the fire, prevents the heat from being transmitted to the inside of the steel beam through the metal thermal bridge, significantly improves the fire resistance limit, and improves the fireproof performance.

[0022] In an optional embodiment, the first mounting hole, the second mounting hole and the third mounting hole are filled with fireproof glue.

[0023] Beneficial effect: Through the above arrangement, the shot pin connection points of the first mounting hole, the second mounting hole and the third mounting hole are all filled and sealed with fireproof glue, which avoids direct exposure of the metal shot pin to the fire scene, blocks the heat conduction path through the metal part, eliminates the thermal bridge effect, and improves the fireproof performance. The aerogel fireproof heat insulation film layer is additionally arranged to replace part of the thick fireproof plate. The film thickness is only millimeter level, which significantly reduces the self-weight of the cladding structure. In the ultra-thin state, efficient heat insulation is realized, the additional load of the steel beam is reduced, and the strict bearing requirement of super high-rise buildings is met.

[0024] In an optional embodiment, the first sound insulation member and the second sound insulation member are made of spring rubber.

[0025] In an optional embodiment, the fireproof heat insulation film layer is made of aerogel.

[0026] In a second aspect, the application further provides a mounting method of a steel beam fireproof structure, which comprises the following steps: installing connecting members on the upper flange plate and the lower flange plate of the steel beam; installing a second sound insulation member on the lower flange plate; fixing a fireproof inner plate to the connecting members by shot pins, and filling fireproof glue in the first mounting hole; installing a first sound insulation member on the upper flange plate; installing a fireproof heat insulation film layer on the outer surface of the structure composed of the first sound insulation member, the second sound insulation member, the fireproof inner plate and the steel beam; fixing a fireproof panel to the steel beam by shot pins, fixing a fireproof bottom plate on the fireproof panel, and filling fireproof glue in the second mounting hole and the third mounting hole.

[0027] Beneficial effect: Through the above steps, the connecting members and the fireproof plate are directly fixed by shot pins, which reduces the dependence on professional welders and improves the construction speed. The connecting members are aligned in the vertical direction, which simplifies the subsequent positioning of the plate, ensures the installation of the plate to be flat and without misalignment, guarantees the integrity of the fireproof film, and avoids the cracking of the fireproof glue caused by unevenness. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0029] Figure 1 The overall structure diagram of a steel beam fireproof structure according to an embodiment of the present application;

[0030] Figure 2 The overall structure diagram of a steel beam fireproof structure according to an embodiment of the present application; Figure 1 The enlarged view of part A in FIG. 1;

[0031] Figure 3 The enlarged view of part B in FIG. 1; Figure 1 The enlarged view of part B in FIG. 1;

[0032] Explanation of reference signs:

[0033] 1, steel beam; 11, upper flange plate; 12, lower flange plate;

[0034] 2, connecting piece;

[0035] 3, fireproof covering structure; 31, fireproof inner plate; 32, first mounting hole; 33, fireproof panel; 34, second mounting hole; 35, third mounting hole; 36, fireproof bottom plate; 37, fireproof heat insulation film layer;

[0036] 4, nail shooting;

[0037] 51, first sound insulation piece; 52, second sound insulation piece. EMBODIMENT

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0039] Steel structure building is widely used due to its high strength, quick construction and other advantages, but the mechanical properties of steel material are rapidly degraded under high temperature of fire, which easily causes collapse accident. Then, the I-beam needs to be fireproof coated. Common steel structure I-beam fireproof coating construction: L-shaped angle steel is symmetrically installed on both sides of the upper flange of the I-beam, and the angle steel is connected with the flange by welding. The inner side of the web of the I-beam is filled with fireproof material, such as rock wool, perlite, vermiculite and the like. The joint plate strip is installed between the fireproof panel and the fireproof filling material (plate structure), which is used for fixing the fireproof panel and enhancing the structural strength. The fireproof panel is installed on the outer edge of the I-beam, and the fireproof panel is fixed on the joint plate strip by self-tapping screws. In order to enhance the fixed connection of the lower panel, the angle guard strip is installed on both sides and fixed by self-tapping screws. In actual construction, the angle guard strip is generally L-shaped light steel keel.

[0040] However, in the above construction process, the fireproof plate is generally fixed on the steel structure beam by welding angle steel and fastening screw connection, which not only increases the working strength during construction, but also the exposed metal parts form a heat bridge effect, which easily reduces the fireproof effect.

[0041] In order to solve the above technical problems, the embodiments of the present application are described below in combination with Figures 1 to 3 .

[0042] According to the embodiments of the present application, on the one hand, a steel beam fireproof structure is provided, which comprises a steel beam 1, a connecting piece 2 and a fireproof coating structure 3.

[0043] As shown in Figures 1 to 3 , the steel beam 1 is an I-shaped steel beam, which comprises an upper flange plate 11 and a lower flange plate 12. The upper flange plate 11 and the lower flange plate 12 are both horizontally installed and are arranged in an upper and lower distribution. The two are connected and supported by a vertical keel. The upper flange plate 11 is fixed on the wall surface above. The connecting piece 2 is provided with a plurality of connecting pieces 2, at least part of the connecting pieces 2 are installed on the wall surface of the upper flange plate 11 close to the lower flange plate 12, or installed on the wall surface of the lower flange plate 12 close to the upper flange plate 11. The connecting piece 2 is L-shaped angle steel, and the connecting piece 2 is provided with four connecting pieces 2. Two connecting pieces 2 are installed on both sides of the lower wall surface of the upper flange plate 11 close to the lower flange plate 12, and the other two connecting pieces 2 are installed on both sides of the upper wall surface of the lower flange plate 12 close to the upper flange plate 11. The fireproof coating structure 3 is sleeved on the steel beam 1, the fireproof coating structure 3 is provided with a mounting hole, and the shot pin 4 is installed in the mounting hole and penetrates the fireproof coating structure 3 to be connected with the steel beam 1 or the connecting piece 2.

[0044] Through the above setting, the connecting piece 2 is hiddenly installed in the inner side wall surface of the steel beam flange and is completely wrapped by the fireproof wrapping structure 3. After the shot pin 4 is fixed through the mounting hole of the fireproof wrapping structure 3, the shot pin 4 is also embedded in the fireproof wrapping structure 3. The heat conduction path formed by the metal connecting piece 2 such as the angle steel and the shot pin 4 in the fire is isolated, the heat is prevented from being transmitted to the inside of the steel beam through the metal heat bridge, the fire resistance limit is significantly improved, and the fireproof performance is improved. The shot pin 4 is used for directly fixing the connecting piece 2 and the fireproof plate, construction is efficient and convenient, and labor and time costs are significantly reduced. The four L-shaped angle steels are symmetrically installed, a standardized anchoring point is provided, and a positioning process is simplified.

[0045] In one embodiment, as shown in Figures 1 to 3 The steel beam fireproof structure further comprises a first sound insulation piece 51 and a second sound insulation piece 52. The fireproof wrapping structure 3 comprises a fireproof inner plate 31, a fireproof surface plate 33, a fireproof bottom plate 36 and a fireproof heat insulation film layer 37.

[0046] As shown in Figures 1 to 3 The first sound insulation piece 51 is provided with two, the first sound insulation piece 51 is L-shaped, two first sound insulation pieces 51 are respectively installed at the corner positions on the two sides of the upper flange plate 11, one side edge of the first sound insulation piece 51 is tightly fitted on the lower wall surface of the upper flange plate 11, and the other side edge of the first sound insulation piece 51 is tightly fitted on the side wall surface of the upper flange plate 11. The second sound insulation piece 52 is provided with two, the second sound insulation piece 52 is U-shaped as a whole, two second sound insulation pieces 52 are respectively installed at the corner positions on the two sides of the lower flange plate 12, one side edge of the second sound insulation piece 52 is tightly fitted on the side wall surface of the lower flange plate 12, and two parallel edges of the second sound insulation piece 52 are respectively tightly fitted on the upper wall surface and the lower wall surface of the second sound insulation piece 52. The material of the first sound insulation piece 51 and the second sound insulation piece 52 is made of spring rubber.

[0047] Through the above setting, the first sound insulation piece 51 of the L-shaped and the second sound insulation piece 52 of the U-shaped are both made of spring rubber material. The sound insulation piece is tightly fitted on the surface of the steel beam 1. The vibration energy of the steel beam is absorbed, and the transmission of structural noise is blocked. The U-shaped piece is three-surface fitted on the lower flange plate 12, the L-shaped piece is double-surface fitted on the upper flange plate 11, a continuous sound insulation layer is formed, and the noise reduction amount is significantly improved.

[0048] As shown in Figures 1 to 3As shown, the fireproof inner plate 31 is provided with two, which are installed on both sides of the steel beam 1, and the fireproof inner plate 31 is arranged between the upper flange plate 11 and the lower flange plate 12, and the upper and lower ends of the fireproof inner plate 31 are respectively abutted on the first sound insulation piece 51 and the second sound insulation piece 52. When the inner walls of the upper and lower ends of the fireproof inner plate 31 are attached to the connecting piece 2, the plane where the outer wall surface of the fireproof inner plate 31 is located coincides with the plane where the outer wall surface of the first sound insulation piece 51 is located and the plane where the outer wall surface of the second sound insulation piece 52 is located, so as to ensure the flatness of the subsequent installation of the fireproof panel 33, and ensure the attachment of the fireproof panel 33 with the internal sound insulation piece and the fireproof inner plate 31.

[0049] As shown in the Figures 1 to 3 , the fireproof bottom plate 36 has one, one fireproof bottom plate 36 is installed between the two fireproof inner plates 31, and is located at the bottom end of the steel beam 1. The two sides of the fireproof bottom plate 36 are respectively installed on the inner walls of the bottom of the two mounting panels.

[0050] As shown in the Figures 1 to 3 , the fireproof cladding structure 3 further comprises a fireproof heat insulation film layer 37, which is installed on the side of the fireproof panel 33 and the fireproof bottom plate 36 close to the steel beam 1.

[0051] As shown in the Figures 1 to 3 , the fireproof inner plate 31 is provided with a first mounting hole 32 corresponding to the upper and lower connecting pieces 2, and the shot pin 4 is arranged in the first mounting hole 32 and penetrates the fireproof inner plate 31 and the connecting piece 2 to fix the fireproof inner plate 31 on the connecting piece 2. The fireproof panel 33 is provided with a second mounting hole 34 corresponding to the upper flange plate 11, and the shot pin 4 is arranged in the second mounting hole 34 and penetrates the fireproof panel 33, the fireproof heat insulation film layer 37 and the upper flange plate 11 to fix the fireproof panel 33 on the steel beam 1; the fireproof panel 33 is provided with a third mounting hole 35 corresponding to the fireproof bottom plate 36, and the shot pin 4 is arranged in the third mounting hole 35 and penetrates the fireproof panel 33, the fireproof heat insulation film layer 37 and the fireproof bottom plate 36 to fix the fireproof bottom plate 36 on the fireproof panel 33, and the material of the fireproof heat insulation film layer 37 is made of aerogel. The first mounting hole 32, the second mounting hole 34 and the third mounting hole 35 are filled with fireproof glue.

[0052] Specifically, the first mounting hole 32, the second mounting hole 34 and the third mounting hole 35 are spaced apart along the Figure 1 front and back direction, i.e. the direction perpendicular to the paper surface. Figure 1

[0053] ​With the above-mentioned setup, the connection points of the nails 4 in the first mounting hole 32, the second mounting hole 34, and the third mounting hole 35 are all sealed with fire-retardant adhesive to prevent the metal nails 4 from being directly exposed to the fire, thus blocking the path of heat conduction through the metal components, eliminating the thermal bridging effect, and improving fire resistance. An aerogel fire-resistant and heat-insulating film layer 37 is added to replace part of the thick fireproof board. The film thickness is only on the order of millimeters, significantly reducing the self-weight of the cladding structure. High-efficiency heat insulation is achieved in an ultra-thin state, reducing the additional load on the steel beams, making it suitable for the stringent load-bearing requirements of ultra-high-rise buildings.

[0054] The fireproof inner panel 31, fireproof panel 33, fireproof base plate 36, first sound insulation component 51, second sound insulation component 52 and fireproof heat insulation film layer 37 form a fully enclosed structure that encloses the steel beam 1 and connector 2 inside, isolates the heat conduction path formed by the metal connector 2 such as angle steel in a fire, prevents heat from being transferred to the inside of the steel beam through the metal thermal bridge, significantly improves the fire resistance limit and fire protection performance.

[0055] According to an embodiment of the present invention, another aspect provides a method for installing a fireproof steel beam structure, comprising the following steps:

[0056] S1. Install connector 2 on the upper flange plate 11 and lower flange plate 12 of steel beam 1: According to the design, attach connector 2 to both sides of the lower wall of upper flange plate 11 and both sides of the upper wall of lower flange plate 12 of steel beam 1; use nail 4 to penetrate connector 2 and upper flange plate 11, or penetrate connector 2 and lower flange plate 12 to fix connector 2 on upper flange plate 11 and lower flange plate 12.

[0057] During installation, the connectors 2 located on the same side of the upper flange plate 11 and the lower flange plate 12 are aligned in the vertical direction to facilitate the installation of other components.

[0058] S2. Install the second sound insulation component 52 onto the lower flange plate 12: Select two second sound insulation components 52 and install them symmetrically on the lower flange plate 12 of the steel beam using fire-retardant adhesive. The side of the second sound insulation component 52 closest to the corresponding connector 2 should be attached to the connector 2. Apply fire-retardant adhesive evenly to the connection point between the second sound insulation component 52 and the lower flange plate 12.

[0059] S3. Use a nail gun 4 to fix the fireproof inner panel 31 to the connector 2, and fill the first mounting hole 32 with fireproof adhesive: First mounting holes 32 are made on the outer wall surface of the fireproof inner panel 31 away from the connector 2, corresponding to the upper and lower connectors 2. The two first mounting holes 32 are symmetrically arranged along the length of the fireproof inner panel 31 with the horizontal axis of the fireproof inner panel 31 as the axis of symmetry. Use a nail gun 4 to drive the nail 4 into the corresponding first mounting hole 32, and the nail 4 penetrates both the fireproof inner panel 31 and the connector 2 to fix the fireproof inner panel 31 to the connector 2.

[0060] Fill the fireproof glue in the first mounting hole 32.

[0061] S4, install the first sound insulation piece 51 to the upper flange plate 11: select two first sound insulation pieces 51, which can be symmetrically installed on the upper flange plate 11 of the steel beam by using fireproof glue. The first sound insulation piece 51 is attached to the connecting piece 2 near one side of the corresponding connecting piece 2. The connecting position between the first sound insulation piece 51 and the upper flange plate 11 is evenly coated with fireproof glue.

[0062] After the above installation is completed, it is necessary to ensure that the outer side of the first sound insulation piece 51, the outer side of the second sound insulation piece 52 and the outer side of the fireproof inner plate 31 are on the same plane. Then, the fireproof glue is evenly coated at the joint position between the first sound insulation piece 51 and the fireproof inner plate 31, at the contact position between the first sound insulation piece 51 and the upper roof, and at the joint position between the second sound insulation piece 52 and the fireproof inner plate 31.

[0063] S5, install the fireproof and heat insulation film layer 37 on the outer surface of the structure composed of the first sound insulation piece 51, the second sound insulation piece 52, the fireproof inner plate 31 and the steel beam 1 by using fireproof glue.

[0064] S6, fix the fireproof panel 33 to the steel beam 1 by using the nail 4, fix the fireproof bottom plate 36 to the fireproof panel 33, and fill the fireproof glue in the second mounting hole 34 and the third mounting hole 35: holes are opened on the outer side of the fireproof panel 33, and the second mounting hole 34 and the third mounting hole 35 on each fireproof panel 33 are symmetrically arranged along the length direction of the fireproof panel 33 with the horizontal axis of the fireproof panel 33 as the axis of symmetry. In order to protect the integrity of the fireproof and heat insulation film layer 37, the nail 4 is driven into the position of the second mounting hole 34, and the nail 4 is fixed to the upper flange plate 11 after penetrating the fireproof panel 33 and the fireproof and heat insulation film layer 37. The second mounting hole 34 is filled with fireproof glue.

[0065] The above steps are repeated to install the fireproof panel 33 on both sides. The fireproof bottom plate 36 is placed between the bottom ends of the two fireproof panels 33, and the entire fireproof bottom plate 36 is located below the lower flange plate 12, and the top surface of the fireproof bottom plate 36 is attached to the fireproof and heat insulation film layer 37. The third mounting hole 35 on both sides of the fireproof bottom plate 36 corresponds to the two fireproof panels 33, and the nail 4 is driven into the position of the third mounting hole 35, and the nail 4 is fixed to the fireproof bottom plate 36 after penetrating the fireproof panel 33. The third mounting hole 35 is filled with fireproof glue.

[0066] Fireproof glue is applied at the joint between the fireproof panel 33 and the fireproof bottom plate 36. Fireproof glue is evenly applied at the contact position between the fireproof panel 33 and the upper roof.

[0067] The steel beam fireproof structure is assembled through the above steps, the connecting piece 2 and the fireproof plate are directly fixed through the nail shooting 4, the dependence on professional welders is reduced, and the construction speed is improved. The connecting piece 2 is aligned in the vertical direction, subsequent plate positioning is simplified, the plate is installed flat without misplacement, the integrity of the fireproof film is ensured, and fireproof glue cracking caused by unevenness is avoided.

[0068] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A fireproof steel beam structure, characterized in that, include: The steel beam (1) includes an upper flange plate (11) and a lower flange plate (12); Connector (2), a plurality of connectors (2) are provided, and a plurality of connectors (2) are installed on the inner walls of the upper flange plate (11) and the lower flange plate (12); Fireproof covering structure (3), the fireproof covering structure (3) is sleeved on the steel beam (1) and the connector (2), and the fireproof covering structure (3) is provided with mounting holes; A nail (4) is installed in the mounting hole and passes through the fireproof covering structure (3) to connect with the steel beam (1) or the connector (2).

2. The fireproof steel beam structure according to claim 1, characterized in that, The fireproof covering structure (3) includes: Fireproof inner panel (31), the fireproof inner panel (31) is disposed between the upper flange plate (11) and the lower flange plate (12), and the end of the fireproof inner panel (31) is fixed on the connector (2); Fireproof panel (33), two fireproof panels (33) are provided, the two fireproof panels (33) are respectively installed on both sides of the steel beam (1), and the fireproof panels (33) are installed on the outer walls of the upper flange plate (11) and the lower flange plate (12); Fireproof base plate (36) is installed at the bottom end of the steel beam (1), and both ends of the fireproof base plate (36) are connected to the fireproof panel (33).

3. The fireproof steel beam structure according to claim 2, characterized in that, The fireproof inner panel (31) has a first mounting hole (32), and the nail (4) is located in the first mounting hole (32) and passes through the fireproof inner panel (31) and the connector (2) to fix the fireproof inner panel (31) on the connector (2).

4. The fireproof steel beam structure according to claim 3, characterized in that, The fireproof panel (33) has a second mounting hole (34) corresponding to the upper flange plate (11). The nail (4) is located in the second mounting hole (34) and passes through the fireproof panel (33) and the upper flange plate (11) to fix the fireproof panel (33) on the steel beam (1). The fireproof panel (33) has a third mounting hole (35) corresponding to the fireproof base plate (36). The nail (4) is located in the third mounting hole (35) and passes through the fireproof panel (33) and the fireproof base plate (36) to fix the fireproof base plate (36) on the fireproof panel (33).

5. The fireproof steel beam structure according to claim 2, characterized in that, The fireproof covering structure (3) also includes a fireproof and heat-insulating film layer (37), which is installed on the side of the fireproof panel (33) and the fireproof base plate (36) near the steel beam (1).

6. The fireproof steel beam structure according to claim 4, characterized in that, Also includes: The first sound insulation component (51) and the second sound insulation component (52) are installed on the upper flange plate (11) and between the upper flange plate (11) and the fireproof covering structure (3). The second sound insulation component (52) is installed on the lower flange plate (12), and the second sound insulation component (52) is installed between the lower flange plate (12) and the fireproof covering structure (3).

7. The fireproof steel beam structure according to claim 6, characterized in that, The first mounting hole (32), the second mounting hole (34) and the third mounting hole (35) are filled with fire-retardant adhesive.

8. The fireproof steel beam structure according to claim 6, characterized in that, The first sound insulation component (51) and the second sound insulation component (52) are made of spring rubber.

9. The fireproof steel beam structure according to claim 5, characterized in that, The fireproof and heat-insulating film layer (37) is made of aerogel.

10. A method for installing a fireproof steel beam structure, characterized in that, The high-performance fireproof cladding structure (3) applicable to the steel beam (1) according to any one of claims 1-9 includes the following steps: installing connectors (2) on the upper flange plate (11) and lower flange plate (12) of the steel beam (1); installing a second sound insulation component (52) onto the lower flange plate (12); fixing the fireproof inner plate (31) to the connectors (2) using nails (4), and filling the first mounting hole (32) with fireproof adhesive; and installing the first sound insulation component (52) onto the lower flange plate (12). 51) Install it onto the upper flange plate (11); install a fireproof and heat-insulating film layer (37) on the outer surface of the structure composed of the first sound insulation component (51), the second sound insulation component (52), the fireproof inner plate (31) and the steel beam (1); fix the fireproof panel (33) onto the steel beam (1) using nails (4), fix the fireproof base plate (36) onto the fireproof panel (33), and fill the second mounting hole (34) and the third mounting hole (35) with fireproof glue.

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