Fireproof, corrosion-resistant and heat-insulating integrated structure of steel beam and construction method

Abstract

The invention relates to a fireproof, corrosion-resistant and heat-insulating integrated structure of a steel beam and a construction method, and belongs to the technical field of building steel. The fireproof, corrosion-resistant and heat-insulating integrated structure comprises a steel beam, a pressed inorganic microbead silicon-plastic plate, a steel wire mesh, a mortar layer and a pressed inorganic microbead silicon-plastic plate and steel beam connecting piece. And after the inorganic microbead silicon-plastic plate is pressed on the surface of the steel beam and the steel wire mesh is fixed, the formation of an external coating system of the steel beam is ensured through outer side guniting and plastering. The use of the A-grade fireproof material pressed inorganic microbead silicon-plastic plate meets the requirements of heat preservation and energy conservation of buildings, solves the problems of fire prevention and corrosion prevention of steel beams and cavity decoration, and has the advantages of no emission of harmful gases and wastes, less carbon emission, no pollution to the environment, synchronization with the service life of the buildings, and wide application prospect. Construction is convenient and reliable, and a building only needs one-time construction all the time.

Description

Technical Field

[0001] The present invention relates to the technical field of building steel beams, and in particular to a fireproof, anti-corrosion and heat-insulating integrated structure of a steel beam and a construction method. Background Art

[0002] my country is in a critical period of accelerating the establishment and improvement of a green, low-carbon, circular development economic system. The country's requirements for building energy-saving design standards are gradually increasing, and the building energy-saving rate is constantly improving, resulting in higher performance requirements for building insulation materials or increasing thickness of the insulation layer. At present, rock wool boards are the representative insulation materials in my country's construction market.

[0003] Rock wool boards offer strong fire resistance, excellent insulation, and noise reduction. However, the production process consumes significant amounts of renewable energy and is harmful to the human body, directly impacting the health of workers. Furthermore, rock wool insulation boards are highly absorbent, which over time can increase the weight of the insulation layer, leading to its shedding and posing a safety hazard to residents.

[0004] Steel structures are made of steel and are a major type of building. They primarily consist of steel beams and other components made from sections and plates, typically connected by welds, bolts, or rivets. Due to their light weight and simple construction, they are widely used in large factories, stadiums, and high-rise buildings. However, poor fire and corrosion resistance are the main drawbacks of steel as a building material. Currently, the main technologies for fire and corrosion protection of steel beams include fire retardants, anti-corrosion coatings, and fireproof board cladding.

[0005] Fire-retardant and anti-corrosion coatings are widely used in steel structures, offering advantages such as light weight, high strength, easy construction, and thermal insulation. Based on numerous examples of steel beam projects, the inventors believe that simply applying fire-retardant and anti-corrosion coatings to the steel surface will result in varying degrees of detachment after the building reaches a certain service life, leading to unsatisfactory fire and corrosion protection. The most significant drawback of thick-coated fire-retardant and anti-corrosion coatings is their poor decorative qualities and aesthetic appeal, resulting in a visually appealing aesthetic. Thick-coated fire-retardant and anti-corrosion coatings are mostly silicate-based, and exhibit significant issues such as water resistance and moisture resistance. Furthermore, due to the high spray thickness and numerous coats, project quality control is difficult, and after many years, cracking and detachment of the coating can easily occur, posing a serious risk to project quality.

[0006] At present, the fireproof boards widely used in my country's projects are represented by gypsum fireproof materials, and the emerging fireproof boards are represented by autoclaved lightweight concrete boards.

[0007] Gypsum fireproofing offers excellent fireproofing, sound absorption, and thermal insulation. However, it suffers from poor water and frost resistance, is easily deformed by moisture, and lacks sufficient hardness. It can crack and discolor over time, affecting its overall protective and decorative effects. Therefore, gypsum fireproofing requires regular inspections, which out-of-sync with the lifespan of the building.

[0008] Autoclaved lightweight concrete panels, also known as ALC panels, are a new building material with superior performance, boasting lightweight, high strength, excellent thermal insulation and sound insulation, long-lasting fire resistance, simple construction, and environmental friendliness. However, ALC panels often deform and crack due to temperature fluctuations. Furthermore, due to their hollow core and large voids, they require extremely high waterproofing requirements and lack sufficient load-bearing capacity. Furthermore, construction quality can vary, with repairs prone to peeling and requiring high-quality bonding and fixing techniques.

[0009] The H-shaped steel beam cavity in the building affects the building's energy efficiency and overall aesthetics. The existence of the cavity also has a great impact on the building's sound insulation. The treatment and decoration of the cavity also affect the entire progress of the steel structure construction. Therefore, a reasonable solution to the cavity decoration problem is crucial to improving the thermal insulation performance, living comfort and construction speed of steel houses. Summary of the Invention

[0010] The beneficial effects of the present invention are:

[0011] 1. The use of pressed inorganic microbead silicon plastic board meets the needs of building insulation and energy saving, and also solves the problems of fire prevention, corrosion prevention and cavity decoration of steel beams. In addition, the production and construction and installation process of the present invention does not emit harmful gases and waste, has low carbon emissions, and will not cause pollution to the environment. It keeps pace with the life of the building, is convenient and reliable, and only requires one construction in its lifetime.

[0012] 2. The connection of the present invention is bonding and bolt connection, which has fast construction speed, simple construction process, high construction quality reliability and less labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 For floor plan Figure 1 ;

[0014] Figure 2 Plane combination used on steel beams for steel structure fireproof and anti-corrosion coating system Figure 1 ;

[0015] Figure 3 is a three-dimensional schematic diagram of the steel beam;

[0016] Figure 4 This is a three-dimensional schematic diagram of the inorganic microbead silicon plastic board pressed on the inner side of the building;

[0017] Figure 5This is a three-dimensional schematic diagram of the inorganic microbead silicon plastic board pressed on the exterior of the building;

[0018] Figure 6 3D schematic diagram of the connection parts 1 and 2 for pressing inorganic microbead silicon plastic plate and steel beam;

[0019] Figure 7 For floor plan Figure 2 ;

[0020] Figure 8 Plane combination used on steel beams for steel structure fireproof and anti-corrosion coating system Figure 2 ;

[0021] Figure 9 It is a three-dimensional schematic diagram of the connection between the connector and the upper flange of the steel beam;

[0022] Figure 10 It is a three-dimensional schematic diagram of the connection between the connector and the lower flange of the steel beam;

[0023] Figure 11 This is a three-dimensional schematic diagram of the pressed inorganic microbead silicon plastic plate;

[0024] Figure 12 3. Schematic diagram of the connection parts 3 and 4 for pressing the inorganic microbead silicon plastic plate and the steel beam;

[0025] The accompanying figures are as follows: 1-hole 1; 2-hole 2; 3-hole 3; 4-hole 4; 5-hole 5; 6-hole 6; 7-hole 7; 8-hole 8; 9-plastic bolt; 10-plastic nut 1; 11-plastic washer; 12-ordinary bolt; 13-plastic nut 2;

[0026] 100-H-shaped steel beam; 200-Inorganic micro-bead silicon plastic board pressed inside the building; 201-Inorganic micro-bead silicon plastic board pressed outside the building; 300-Steel mesh inside the building; 301-Steel mesh outside the building; 400-Mortar layer inside the building; 401-Mortar layer outside the building; 500-Floor slab; 600-Wall; 700-Floor slab insulation layer; 800-Wall insulation layer; 900-Inorganic micro-bead silicon plastic board and steel Beam connector 1; 901-pressed inorganic microbead silicon plastic board and steel beam connector 2; 101-H-shaped steel beam; 202-pressed inorganic microbead silicon plastic board; 302-steel mesh; 402-mortar layer; 501-floor slab; 601-wall; 701-floor slab insulation layer; 801-wall insulation layer; 902-pressed inorganic microbead silicon plastic board and steel beam connector 3; 903-pressed inorganic microbead silicon plastic board and steel beam connector 4; DETAILED DESCRIPTION

[0027] The following further describes specific embodiments of the present invention with reference to the accompanying drawings. It should be noted that these descriptions of the embodiments are intended to facilitate understanding of the present invention and do not constitute limitations of the present invention. Furthermore, the technical features of the various embodiments of the present invention described below may be combined as long as they do not conflict with each other.

[0028] Embodiment 1:

[0029] See Figures 1-6 The figure shows a schematic diagram of the integrated fireproof, anti-corrosion and thermal insulation structure of a steel beam according to an embodiment of the present invention being used on the outer edge beam of a steel frame (H-shaped steel beam). This schematic diagram corresponds to construction method 1. As shown in the figure, the integrated fireproof, anti-corrosion and thermal insulation structure of the steel beam includes an H-shaped steel beam 100, a pressed inorganic micro-bead silicon plastic board 200 on the inside of the building and a pressed inorganic micro-bead silicon plastic board 201 on the outside of the building, a steel mesh 300 on the inside of the building and a steel mesh 301 on the outside of the building, a mortar layer 400 on the inside of the building and a mortar layer 401 on the outside of the building, a floor slab 500, a wall 600, a floor slab insulation layer 700, a wall insulation layer 800, and pressed inorganic micro-bead silicon plastic board and steel beam connectors 900 (located at 1 / 3 of the height of the steel beam) and 901 (located at 2 / 3 of the height of the steel beam).

[0030] The H-shaped steel beam 100 has a plurality of holes 1 and a plurality of holes 2, wherein the holes 2 are located below the holes 1;

[0031] The inorganic microbead silicon plastic board 200 pressed on the inner side of the building has multiple holes 3 and multiple holes 4, and the holes 4 are located below the holes 3;

[0032] The inorganic micro-bead silicon plastic board 201 pressed on the outside of the building has a plurality of holes 5 and a plurality of holes 6, and the holes 6 are located below the holes 5;

[0033] Multiple pressed inorganic micro-bead silicon plastic plates and steel beam connectors 900 pass through holes 1, 3, and 5; multiple pressed inorganic micro-bead silicon plastic plates and steel beam connectors 901 pass through holes 2, 4, and 6;

[0034] The pressed inorganic microbead silicon plastic plate and steel beam connecting parts 900 and 901 include plastic bolts 9, plastic nuts 10 and plastic washers 11.

[0035] Example 2:

[0036] See Figure 7-12The figure shows a schematic diagram of the integrated fireproof, anti-corrosion and thermal insulation structure of a steel beam according to an embodiment of the present invention, which is used on the outer edge beam of a steel frame (H-shaped steel beam). This schematic diagram corresponds to construction method 2. As shown in the figure, the integrated fireproof, anti-corrosion and thermal insulation structure of the steel beam includes an H-shaped steel beam 101, a pressed inorganic micro-bead silicon plastic board 202, a steel mesh 302, a mortar layer 402, a floor slab 501, a wall 601, a floor slab insulation layer 701, a wall insulation layer 801, and pressed inorganic micro-bead silicon plastic board and steel beam connectors 902 (connected to the upper flange of the steel beam) and 903 (connected to the lower flange of the steel beam).

[0037] The pressed inorganic microbead silicon plastic plate 202 has a plurality of holes 7 and a plurality of holes 8, wherein the holes 8 are located below the holes 7;

[0038] Multiple pressed inorganic micro-bead silicon plastic plates and steel beam connectors 902 pass through hole 7; multiple pressed inorganic micro-bead silicon plastic plates and steel beam connectors 903 pass through hole 8;

[0039] The connecting parts of the pressed inorganic microbead silicon plastic plate and the steel beam include ordinary bolts 12 and plastic nuts 13.

Claims

1. The present invention relates to an integrated fireproof, anti-corrosion, and thermal insulation structure for steel beams and its construction method, belonging to the field of building steel technology. The integrated fireproof, anti-corrosion, and thermal insulation structure comprises a steel beam, a pressed inorganic microbead silicon-plastic sheet, a steel mesh and mortar wrapping layer, and connectors connecting the pressed inorganic microbead silicon-plastic sheet to the steel beam.

2. The fireproof, anti-corrosion and heat-insulating integrated structure of the steel beam according to claim 1 is characterized in that : The steel beam is an H-shaped steel beam.

3. The fireproof, anticorrosive and heat-insulating integrated structure of the steel beam according to claim 1 is characterized in that :The pressed inorganic microbead silicon plastic board has the advantages of Class A non-combustible fireproof performance and high-efficiency thermal insulation performance with low thermal conductivity.

4. The fireproof, anticorrosive and heat-insulating integrated structure of the steel beam according to claim 1 is characterized in that :The material of the steel wire mesh is galvanized steel wire mesh.

5. The fireproof, anti-corrosion and heat-insulating integrated structure of the steel beam according to claim 1 is characterized in that The mortar used in the mortar layer is a polymer mortar.

6. The fireproof, anticorrosive and heat-insulating integrated structure of the steel beam according to claim 6 is characterized in that : The polymer mortar used is a thermal insulation mortar with a strength of not less than M7.5 and a thickness of not less than 4mm.

7. The fireproof, anticorrosive and heat-insulating integrated structure of steel beam according to claim 1 is characterized in that :The mortar layer includes a spraying layer and a plaster layer, and the plaster layer is made on the finished surface of the spraying layer.

8. A fireproof, anticorrosive and heat-insulating integrated structure and construction method for steel beams, characterized in that , the construction includes the following steps: Construction method 1: (1) Punching holes in steel beams Drill holes at 1 / 3 and 2 / 3 of the height of the web of the steel beam, and drill a group of holes every 1 meter along the length of the steel beam. (2) Laying pressed inorganic microbead silicon plastic board inside the building Punch holes at the junction of the pressed inorganic microbead silicon plastic board and the hole; evenly apply bonding mortar on the inner surface of the steel beam facing the building. Make the holes in step (1) correspond to the holes in the pressed inorganic microbead silicon plastic board, and press the pressed inorganic microbead silicon plastic board into the steel beam cavity to tightly fit the steel beam surface. (3) Install plastic bolt connectors Make the plastic bolts pass through the holes of the pressed inorganic microbead silicon plastic plate and the steel beam in steps (1) and (2). (4) Laying pressed inorganic microbead silicon plastic board on the outside of the building Apply bonding mortar evenly on the outer surface of the steel beam facing the building, so that the plastic bolts in step (3) correspond to the holes of the pressed inorganic microbead silicon plastic plate, and press the pressed inorganic microbead silicon plastic plate into the steel beam cavity and fit it tightly to the steel beam surface. (5) Laying wire mesh Hang the wire mesh on the plastic bolts described in step (3) and tighten the bolts one by one with plastic nuts. (6) Mortar finishing Spray mortar until the spray layer is 2-3 mm thick, and smooth it out in time after completion; when the surface dryness of the spray layer reaches 80%, plaster the surface until the plaster layer is 2-3 mm thick; after the plastering is completed, cover and maintain it. Construction method 2: (1) Spot welding bolts Clean the surface of the steel beam, spot weld two ordinary bolts on the sides of the upper and lower flanges of the steel beam, and weld one group every 50 cm in the horizontal direction. (2) Laying pressed inorganic microbead silicon plastic board Drill holes at the connection points between the pressed inorganic micro-bead silicon plastic board and ordinary bolts; evenly apply bonding mortar on the surface of the steel beam. Make the bolts in step (1) correspond to the holes in the pressed inorganic micro-bead silicon plastic board, and press the pressed inorganic micro-bead silicon plastic board into the cavity of the steel beam to tightly fit the surface of the steel beam. (3) Laying wire mesh Hang the wire mesh on the ordinary bolts described in step (1) and tighten the bolts one by one with plastic nuts. (4) Mortar finishing Spray mortar until the spray layer is 2-3 mm thick, and smooth it out in time after completion; when the surface dryness of the spray layer reaches 80%, plaster the surface until the plaster layer is 2-3 mm thick; after the plastering is completed, cover and maintain it.

Images