Steel column fireproof structure and construction method thereof

Abstract

The invention discloses a steel column fireproof structure and a construction method thereof.The steel column fireproof structure comprises a steel column and at least one fireproof assembly, the at least one fireproof assembly is fixedly connected with the steel column, and each fireproof assembly of the at least one fireproof assembly comprises an inner layer fireproof plate, a rock wool sandwich layer and an outer layer fireproof plate; the outer-layer fireproof plate, the rock wool sandwich layer and the inner-layer fireproof plate are sequentially connected, and the inner-layer fireproof plate is connected with the steel column and arranged on the outer side wall of the square steel keel of the steel column. By adopting the double-layer steel column fireproof structure with the rock wool sandwich layer, the problem that a traditional fireproof plate is limited in heat insulation effect is solved, and the fireproof performance and the fire resistance of the steel column are improved; and the integrity and the stability of the steel column fireproof structure are improved, meanwhile, the installation process of a traditional fireproof plate is simplified, and the construction and installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a steel column fireproof structure and a construction method thereof. Background Art

[0002] Steel structure buildings have the advantages of light weight, high strength and fast construction speed, and have been widely used in modern buildings. However, the fire resistance of steel structures is poor. When the temperature rises to a certain level, its strength will decrease rapidly, and even collapse, posing a serious threat to people's lives and property safety. Therefore, improving the fire resistance of steel structures is an issue that must be considered in the design and construction of steel structure buildings.

[0003] At present, the commonly used fire prevention methods for steel structures include spraying fire retardant coatings, wrapping fireproof boards, etc.; spraying fire retardant coatings is easy to apply, but the coating is prone to aging and falling off, and the maintenance cost is high; wrapping fireproof boards have good fireproof performance and strong durability, but traditional fireproof boards are usually single-layer structures, with limited insulation effects, and are relatively complicated to construct and install; therefore, the existing steel structure fire prevention methods still have problems such as poor fireproof performance and complex construction and installation. Summary of the invention

[0004] The embodiment of the present invention provides a steel column fireproof structure and a construction method thereof, aiming to solve the problems of poor fireproof performance and complex construction and installation in the prior art.

[0005] In order to achieve the above-mentioned objectives, the first aspect of the present invention provides a steel column fireproof structure, comprising: a steel column and at least one fireproof component, the at least one fireproof component is fixedly connected to the steel column, each of the at least one fireproof component comprises an inner fireproof board, a rock wool sandwich layer and an outer fireproof board, the outer fireproof board, the rock wool sandwich layer and the inner fireproof board are connected and arranged in sequence, the inner fireproof board is connected to the steel column, and is arranged on the outer side wall of the square steel keel of the steel column.

[0006] Furthermore, the rock wool sandwich layer includes an angle steel keel frame and a rock wool board, one side of the angle steel keel frame is connected to the outer fireproof board, and the other side of the angle steel keel frame is connected to the inner fireproof board, and the rock wool board is filled in the angle steel keel frame.

[0007] Furthermore, the thickness of the rock wool board is 100 mm, and the bulk density of the rock wool board is 100 kg / m 3 .

[0008] Furthermore, the inner fireproof board and the outer fireproof board are both fiber-reinforced silicate fireproof boards, and the thickness of the inner fireproof board and the outer fireproof board are both 12 mm.

[0009] Furthermore, each fireproof component also includes a waterproof layer, which is arranged on the outer surface of the outer fireproof board, and the waterproof layer is formed by painting with a polyurethane waterproof coating.

[0010] Furthermore, a plurality of fixing connectors are arranged on the side of the inner fireproof board, and the inner fireproof board is fixedly arranged on the outer side wall of the square steel keel through the plurality of fixing connectors.

[0011] Furthermore, each fireproof component also includes a plurality of first assembling pieces and a plurality of second assembling pieces, wherein the plurality of first assembling pieces pass through the inner fireproof board and are fixedly connected to one side wall of the angle steel keel frame, and the plurality of second assembling pieces pass through the outer fireproof board and are fixedly connected to the other side wall of the angle steel keel frame.

[0012] A second aspect of the present invention provides a construction method for a steel column fireproof structure, the method comprising the following steps:

[0013] S1. Construction preparation work, wherein the construction preparation work includes preparing materials, measuring the installation dimensions of the construction site, and ensuring the cleanliness of the construction site;

[0014] S2, assembling the angle steel keels in the prepared materials according to the measured installation dimensions of the construction site to obtain at least one angle steel keel frame;

[0015] S3, using a plurality of first splicing pieces to fix the inner layer fireproof board in the prepared material on a side wall of each angle steel keel frame to obtain at least one first fireproof piece;

[0016] S4, filling the rock wool board in the prepared material into the angle steel keel frame of each first fireproof member to obtain at least one second fireproof member;

[0017] S5, using a plurality of second splicing pieces to fix the outer fireproof board in the prepared material on the other side wall of the angle steel keel frame in each second fireproof piece, to obtain at least one fireproof assembly;

[0018] S6. Use a plurality of fixed connectors to fix each fireproof component on the square steel keel of the steel column, and determine whether to splice every two adjacent fireproof components in the at least one fireproof component according to the design requirements;

[0019] S7, applying a waterproof layer on the outer surface of the outer fireproof board in the at least one fireproof assembly to obtain a steel column fireproof structure;

[0020] S8. Check the installation quality of the steel column fire protection structure.

[0021] Furthermore, before executing S6, the method further includes: measuring and marking the installation position of the square steel keel on the steel column according to the steel column size in the measured construction site installation size and the design requirements.

[0022] Furthermore, S8 includes: checking whether the connection between the inner fireproof board and the angle steel keel frame is firm, whether the connection between the outer fireproof board and the angle steel keel frame is firm, whether the connection between the inner fireproof board and the steel column is firm, and whether the waterproof layer has a waterproof effect.

[0023] The embodiment of the present invention provides a steel column fireproof structure and a construction method thereof, the steel column fireproof structure comprises a steel column and at least one fireproof assembly, the at least one fireproof assembly is fixedly connected to the steel column, each of the at least one fireproof assembly comprises an inner fireproof board, a rock wool sandwich layer and an outer fireproof board, the outer fireproof board, the rock wool sandwich layer and the inner fireproof board are sequentially connected and arranged, the inner fireproof board is connected to the steel column and arranged on the outer side wall of the square steel keel of the steel column. The present invention solves the problem of limited thermal insulation effect of traditional fireproof boards by adopting a double-layer steel column fireproof structure with a rock wool sandwich layer, improves the fireproof performance and the fire resistance of the steel column; and while increasing the integrity and stability of the steel column fireproof structure, simplifies the installation process of traditional fireproof boards and improves the construction and installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of an application scenario of a steel column fireproof structure provided by an embodiment of the present invention;

[0026] Figure 2 A schematic structural diagram of a fireproofing assembly in a steel column fireproofing structure provided by an embodiment of the present invention;

[0027] Figure 3 A schematic flow chart of a steel column fireproof structure construction method provided in one embodiment of the present invention.

[0028] Among them, the reference numerals in the figures are as follows:

[0029] 1. Steel column; 11. Square steel keel; 2. Fireproof assembly; 21. Inner fireproof board; 22. Rock wool sandwich layer; 221. Angle steel keel frame; 222. Rock wool board; 23. Outer fireproof board; 24. Waterproof layer; 3. Fixed connectors. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0032] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0033] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0034] See also Figure 1 to Figure 2 The first aspect of the present invention provides a steel column fireproof structure, comprising: a steel column 1 and at least one fireproof component 2, wherein the at least one fireproof component 2 is fixedly connected to the steel column 1, and each of the at least one fireproof component 2 comprises an inner fireproof board 21, a rock wool sandwich layer 22 and an outer fireproof board 23, and the outer fireproof board 23, the rock wool sandwich layer 22 and the inner fireproof board 21 are connected and arranged in sequence, and the inner fireproof board 21 is connected to the steel column 1 and is arranged on the outer side wall of the square steel keel 11 of the steel column 1.

[0035] In this embodiment, in order to solve the problem of poor thermal insulation effect of traditional fireproof boards, this embodiment provides a steel column fireproof structure, which includes a steel column 1 and at least one fireproof component 2, wherein the at least one fireproof component 2 is fixedly connected to the steel column 1, and every two adjacent fireproof components 2 in the at least one fireproof component 2 can be spliced ​​with each other according to the actual size of the steel column 1, so that the at least one fireproof component 2 can wrap the steel column 1, thereby facilitating installation and disassembly while providing fire protection for the steel column 1. And each fireproof component 2 in the at least one fireproof component 2 is formed by the outer fireproof board 23, the rock wool sandwich layer 22 and the inner fireproof board 21 connected and arranged in sequence; and the size of each fireproof component 2 can be set according to demand; wherein the inner fireproof board 21 is connected to the steel column 1 and arranged on the outer side wall of the square steel keel 11 of the steel column 1. In addition, in order to realize the mutual splicing of every two adjacent fireproof components 2 in the at least one fireproof component 2, each inner fireproof board 21 and each outer fireproof board 23 are designed as a splicing structure, such as a slot, mortise and tenon structure, so that the connection between every two adjacent inner fireproof boards 21 is tighter and firmer, and the connection between every two adjacent outer fireproof boards 23 is tighter and firmer. Secondly, the rock wool sandwich layer 22 has excellent heat insulation and flame retardant properties, which can meet higher fire resistance requirements. Therefore, this embodiment solves the problem of limited heat insulation effect of traditional fireproof boards through the steel column fireproof structure, improves the fireproof performance and the fire resistance of the steel column 1; and while increasing the integrity and stability of the steel column fireproof structure, it simplifies the installation process of traditional fireproof boards and improves the construction and installation efficiency.

[0036] In one embodiment, if Figure 1 and Figure 2 As shown, the rock wool sandwich layer 22 includes an angle steel keel frame 221 and a rock wool board 222 , one side of the angle steel keel frame 221 is connected to the outer fireproof board 23 , and the other side of the angle steel keel frame 221 is connected to the inner fireproof board 21 , and the rock wool board 222 is filled in the angle steel keel frame 221 .

[0037] In this embodiment, in order to fix the outer fireproof board 23 and the inner fireproof board 21, the rock wool sandwich layer 22 includes a steel keel frame and a rock wool board 222, wherein the angle steel keel frame 221 is arranged between the outer fireproof board 23 and the inner fireproof board 21, and the angle steel keel frame 221 can provide a fixed fulcrum for the outer fireproof board 23 and the inner fireproof board 21, so that the inner fireproof board 21 is fixedly connected to the angle steel keel frame 221, the outer fireproof board 23 is fixedly connected to the angle steel keel frame 221, and the rock wool board 222 can be filled in the internal space formed by the angle steel keel frame 221. And through the rock wool board 222 with excellent heat insulation and flame retardant properties, the temperature increase of the steel column 1 can be effectively delayed, and the fire resistance of the steel column 1 is improved.

[0038] In one embodiment, if Figure 1 and Figure 2 As shown, the thickness of the rock wool board 222 is 100 mm, and the bulk density of the rock wool board 222 is 100 kg / m 3 .

[0039] In this embodiment, the rock wool board 222 is a high-quality heat-insulating and flame-retardant material. Its specific performance and thickness are crucial to achieving a good fire-proof effect. Therefore, the design of the thickness and density of the rock wool board 222 filled in the steel keel frame is particularly important. In this embodiment, in order to meet the requirements of different fire resistance levels, the thickness of the rock wool board 222 is preferably 100 mm, and in order to avoid gaps that affect the heat insulation effect, the bulk density of the rock wool board 222 is preferably 100 kg / m 3 .

[0040] In one embodiment, if Figure 1 and Figure 2 As shown, the inner fireproof board 21 and the outer fireproof board 23 are both fiber-reinforced silicate fireproof boards, and the thickness of the inner fireproof board 21 and the outer fireproof board 23 are both 12 mm.

[0041] In this embodiment, in order to further improve the fireproof performance of the fireproof assembly 2, the inner fireproof board 21 and the outer fireproof board 23 are both made of high temperature resistant and flame retardant materials, such as calcium silicate board, magnesium fireproof board, etc., wherein fiber reinforced silicate fireproof board is preferably used in this embodiment. And the thickness of the inner fireproof board 21 and the outer fireproof board 23 are both set to 12 mm, so as to provide double protection through the double-layer fireproof board to enhance the fireproof effect.

[0042] In one embodiment, if Figure 1 and Figure 2As shown, each fireproof component 2 also includes a waterproof layer 24, which is arranged on the outer surface of the outer fireproof board 23, and the waterproof layer 24 is formed by painting with a polyurethane waterproof coating.

[0043] In this embodiment, in order to enhance the waterproof performance of the fireproof component 2, a waterproof layer 24 is further provided on the outer surface of the outer fireproof board 23. Considering the compatibility of the waterproof layer 24 with the outer fireproof board 23 and ensuring that the waterproof layer 24 will not fall off or be damaged during long-term use, the waterproof layer 24 is made of waterproof coating or waterproof roll material and other materials. In this embodiment, the waterproof layer 24 is preferably made of polyurethane waterproof coating, so that the waterproof layer 24 is formed by evenly applying the polyurethane waterproof coating on the outer surface of the outer fireproof board 23, thereby effectively preventing moisture from penetrating into the inner part of the outer fireproof board 23 to avoid affecting the overall fireproof performance of the fireproof component 2.

[0044] In one embodiment, if Figure 1 and Figure 2 As shown, a plurality of fixing connectors 3 are provided on the side of the inner fireproof board 21 , and the inner fireproof board 21 is fixedly provided on the outer side wall of the square steel keel 11 through the plurality of fixing connectors 3 .

[0045] In this embodiment, in order to ensure that each fireproof component 2 is firmly and stably arranged on the steel column 1, a plurality of fixed connectors 3 are arranged on the side of the inner fireproof panel 21, wherein the plurality of fixed connectors 3 may be connectors such as bolts and rivets, thereby being bolted or welded to the steel column 1 through the plurality of fixed connectors 3 on the side of the inner fireproof panel 21, thereby achieving each fireproof component 2 being fixed to the outer wall of the square steel keel 11 of the steel column 1.

[0046] In one embodiment, if Figure 1 and Figure 2 As shown, each fireproof component 2 also includes a plurality of first assembling pieces (not shown) and a plurality of second assembling pieces (not shown), wherein the plurality of first assembling pieces pass through the inner fireproof board 21 and are fixedly connected to one side wall of the angle steel keel frame 221, and the plurality of second assembling pieces pass through the outer fireproof board 23 and are fixedly connected to the other side wall of the angle steel keel frame 221.

[0047] In this embodiment, in order to improve the installation efficiency and stability of the fireproof component 2, each fireproof component 2 also includes a plurality of first assembling pieces and a plurality of second assembling pieces, wherein the plurality of first assembling pieces and the plurality of second assembling pieces can both be screws, so that by nailing operation, the plurality of first assembling pieces are passed through the inner fireproof board 21 and fixedly connected to one side wall of the angle steel keel frame 221, and the plurality of second assembling pieces are passed through the outer fireproof board 23 and fixedly connected to the other side wall of the angle steel keel frame 221, so that the inner fireproof board 21 and the outer fireproof board 23 are tightly combined with the angle steel keel frame 221 respectively.

[0048] See also Figures 1 to 3 In a second aspect of the present invention, a construction method of a steel column fireproof structure is provided, the construction method comprising the following steps:

[0049] S1. Construction preparation work, wherein the construction preparation work includes preparing materials, measuring the installation dimensions of the construction site, and ensuring the cleanliness of the construction site;

[0050] S2, assembling the angle steel keels in the prepared materials according to the measured installation dimensions at the construction site to obtain at least one angle steel keel frame 221;

[0051] S3, using a plurality of first splicing pieces to fix the inner layer fireproof board 21 in the prepared material on a side wall of each angle steel keel frame 221, to obtain at least one first fireproof piece;

[0052] S4, filling the rock wool board 222 in the prepared material into the angle steel keel frame 221 of each first fireproof member to obtain at least one second fireproof member;

[0053] S5, using a plurality of second splicing pieces to fix the outer fireproof board 23 in the prepared material on the other side wall of the angle steel keel frame 221 in each second fireproof piece, to obtain at least one fireproof assembly 2;

[0054] S6. Use a plurality of fixing connectors 3 to fix each fireproof component 2 on the square steel keel 11 of the steel column 1, and determine whether to splice every two adjacent fireproof components 2 in the at least one fireproof component 2 according to the design requirements;

[0055] S7, applying a waterproof layer 24 on the outer surface of the outer fireproof board 23 in the at least one fireproof assembly 2 to obtain a steel column fireproof structure;

[0056] S8. Check the installation quality of the steel column fire protection structure.

[0057] In this embodiment, in the construction process of the steel column fireproof structure, the prepared materials in step one include preparing rock wool sandwich double-layer fireproof panels, a plurality of fixing connectors 3, angle steel keels and other materials; measuring the installation dimensions of the construction site includes measuring the installation dimensions of the steel column 1; ensuring the cleanliness of the construction site is to ensure that the surface of the steel column 1 is clean, flat, and free of oil, dust and other debris; then the angle steel keel is processed according to the measured installation dimensions of the construction site, for example, a plurality of angle steel keels are welded or assembled to form an angle steel keel frame 221; the inner layer fireproof panel 21 is placed on the angle steel keel frame 221, and at the same time, the inner layer fireproof panel 21 is preliminarily fixed using a plurality of first splicing parts (such as screws, etc.), and the position of the inner layer fireproof panel 21 is adjusted so that it fits tightly with the corresponding angle steel keel frame 221 to obtain at least one first fireproof component; then the rock wool board 222 is filled in each first A fireproof component is placed in an angle steel keel frame 221 of a fireproof component, and at the same time, it is ensured to be densely filled without gaps, so as to obtain at least one second fireproof component; the outer fireproof board 23 is placed on the other side wall of the angle steel keel frame 221 of each second fireproof component, and the outer fireproof board 23 is preliminarily fixed by a plurality of second splicing parts, and the position of the outer fireproof board 23 is adjusted to make it fit tightly with the corresponding angle steel keel frame 221, so as to obtain at least one fireproof component 2; furthermore, a plurality of fixing connectors 3 (such as bolts, rivets, etc.) are used to fix the at least one fireproof component 2 on the square steel keel 11 of the steel column 1, so as to ensure that the fireproof component 2 located on the steel column 1 is firm and stable; at the same time, it can also be determined whether to splice the at least one fireproof component 2 according to the design requirements of the steel column 1 (such as size, shape, etc.), so as to achieve complete wrapping of the steel column 1, thereby effectively preventing the temperature of the steel column 1 from rising. Furthermore, if it is necessary to enhance the waterproof performance of the at least one fireproof component 2, a polyurethane waterproof coating is evenly applied on the outer surface of the at least one fireproof component 2 to form a waterproof layer 24. Finally, after completing the above steps, S8 includes checking whether the inner fireproof board 21 is firmly connected to the angle steel keel frame 221, whether the outer fireproof board 23 is firmly connected to the angle steel keel frame 221, whether the inner fireproof board 21 is firmly connected to the steel column 1, and whether the waterproof layer 24 has a waterproof effect during the acceptance stage, thereby ensuring that the construction of the steel column fireproof structure meets the design requirements and relevant standards.

[0058] In one embodiment, if Figure 1-3 As shown, before executing S6, it also includes:

[0059] According to the dimensions of the steel column 1 in the measured installation dimensions at the construction site and the design requirements, the installation position of the square steel keel 11 on the steel column 1 is measured and marked.

[0060] In this embodiment, in order to determine the installation position of the at least one fireproof component 2, this embodiment measures and marks the installation position of the square steel keel 11 on the steel column 1 according to the size of the steel column 1 in the measured installation dimensions of the construction site and the design requirements, so that when the relevant staff subsequently fix the at least one fireproof component 2, they can determine the specific installation position between the at least one fireproof component 2 and the steel column 1 according to the installation position of the square steel keel 11.

[0061] The present invention discloses a steel column fireproof structure and a construction method thereof, the steel column fireproof structure comprises a steel column and at least one fireproof assembly, the at least one fireproof assembly is fixedly connected to the steel column, each of the at least one fireproof assembly comprises an inner fireproof board, a rock wool sandwich layer and an outer fireproof board, the outer fireproof board, the rock wool sandwich layer and the inner fireproof board are sequentially connected and arranged, the inner fireproof board is connected to the steel column and arranged on the outer side wall of the square steel keel of the steel column. The present invention solves the problem of limited heat insulation effect of traditional fireproof boards by adopting a double-layer steel column fireproof structure with a rock wool sandwich layer, improves the fireproof performance and the fire resistance of the steel column; and while increasing the integrity and stability of the steel column fireproof structure, simplifies the installation process of traditional fireproof boards and improves the construction and installation efficiency.

[0062] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A steel column fireproof structure, characterized in that: include: A steel column and at least one fireproof component, wherein the at least one fireproof component is fixedly connected to the steel column, each of the at least one fireproof component comprises an inner fireproof board, a rock wool sandwich layer and an outer fireproof board, wherein the outer fireproof board, the rock wool sandwich layer and the inner fireproof board are connected and arranged in sequence, and the inner fireproof board is connected to the steel column and arranged on the outer side wall of the square steel keel of the steel column.

2. The steel column fireproof structure according to claim 1, characterized in that: The rock wool sandwich layer includes an angle steel keel frame and a rock wool board. One side of the angle steel keel frame is connected to the outer fireproof board, and the other side of the angle steel keel frame is connected to the inner fireproof board. The rock wool board is filled in the angle steel keel frame.

3. The steel column fireproof structure according to claim 2, characterized in that: The thickness of the rock wool board is 100 mm, and the bulk density of the rock wool board is 100 kg / m 3 .

4. The steel column fireproof structure according to claim 1, characterized in that: The inner fireproof board and the outer fireproof board are both fiber-reinforced silicate fireproof boards, and the thickness of the inner fireproof board and the outer fireproof board are both 12 mm.

5. The steel column fireproof structure according to claim 1, characterized in that: Each fireproof component also includes a waterproof layer, which is arranged on the outer surface of the outer fireproof board and is formed by painting with polyurethane waterproof paint.

6. The steel column fireproof structure according to claim 1, characterized in that: A plurality of fixing connectors are arranged on the side of the inner fireproof board, and the inner fireproof board is fixedly arranged on the outer side wall of the square steel keel through the plurality of fixing connectors.

7. The steel column fireproof structure according to claim 2, characterized in that: Each fireproof assembly also includes a plurality of first assembling pieces and a plurality of second assembling pieces. The plurality of first assembling pieces pass through the inner fireproof board and are fixedly connected to one side wall of the angle steel keel frame. The plurality of second assembling pieces pass through the outer fireproof board and are fixedly connected to the other side wall of the angle steel keel frame.

8. A construction method for a steel column fireproof structure, characterized in that: The method comprises the following steps: S1. Construction preparation work, wherein the construction preparation work includes preparing materials, measuring the installation dimensions of the construction site, and ensuring the cleanliness of the construction site; S2, assembling the angle steel keels in the prepared materials according to the measured installation dimensions of the construction site to obtain at least one angle steel keel frame; S3, using a plurality of first splicing pieces to fix the inner layer fireproof board in the prepared material on a side wall of each angle steel keel frame to obtain at least one first fireproof piece; S4, filling the rock wool board in the prepared material into the angle steel keel frame of each first fireproof member to obtain at least one second fireproof member; S5, using a plurality of second splicing pieces to fix the outer fireproof board in the prepared material on the other side wall of the angle steel keel frame in each second fireproof piece, to obtain at least one fireproof assembly; S6. Use a plurality of fixed connectors to fix each fireproof component on the square steel keel of the steel column, and determine whether to splice every two adjacent fireproof components in the at least one fireproof component according to the design requirements; S7, applying a waterproof layer on the outer surface of the outer fireproof board in the at least one fireproof assembly to obtain a steel column fireproof structure; S8. Check the installation quality of the steel column fire protection structure.

9. The construction method of the steel column fireproof structure according to claim 8, characterized in that: Before executing S6, the method further includes: According to the steel column dimensions and design requirements in the measured construction site installation dimensions, the installation positions of the square steel keels on the steel columns are measured and marked.

10. The construction method of the steel column fireproof structure according to claim 8, characterized in that: The S8 includes: Check whether the connection between the inner fireproof board and the angle steel keel frame is firm, whether the connection between the outer fireproof board and the angle steel keel frame is firm, whether the connection between the inner fireproof board and the steel column is firm, and whether the waterproof layer has a waterproof effect.

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