CN218580909U - Fireproof structure of cold-formed thin-walled steel - Google Patents
Fireproof structure of cold-formed thin-walled steel Download PDFInfo
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- CN218580909U CN218580909U CN202221682331.4U CN202221682331U CN218580909U CN 218580909 U CN218580909 U CN 218580909U CN 202221682331 U CN202221682331 U CN 202221682331U CN 218580909 U CN218580909 U CN 218580909U
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Abstract
The utility model relates to a building engineering steel construction technical field especially relates to a thin-walled cold-formed steel fire resistive construction, aims at solving the problem that current light steel structure building lacks effective fire prevention measure. The utility model comprises a heat-insulating board, a cement fiber board and anti-cracking cement mortar; the cement fiber boards are arranged on two surfaces of the heat insulation board; the heat insulation board comprises a light steel keel frame, and EPS materials are filled in the light steel keel frame; EPS particles are uniformly distributed in the cement fiberboard; the anti-cracking cement mortar is coated on one side of the cement fiber board, which is far away from the heat insulation board. The utility model discloses a EPS material in the heated board and the cement fiberboard who adds the EPS granule promote the fire behavior of self. When heated, the heat insulation performance of the cement fiber board can slow down the temperature rise speed of the heat insulation board, thereby prolonging the fire-resistant time of the light steel keel frame; meanwhile, the EPS material filled in the light steel keel frame can ensure that the heat-insulation board is only melted and not combusted under the protection of the cement fiberboard, and the fireproof performance is improved.
Description
Technical Field
The utility model relates to a building engineering steel construction technical field especially relates to a thin-walled cold-formed steel fire resistive construction.
Background
With the development and improvement of social and economic levels, people put forward higher requirements on living and living environments, but in vast rural areas in China, a plurality of old rural houses exist, and the old rural houses have the defects of basically no heat preservation of walls, high energy consumption, long construction period, poor living comfort and the like, and do not meet the national beautiful rural construction requirements. Therefore, different forms of cold-formed thin-wall section steel type light steel structure buildings appear in China in recent years, and the buildings are generally characterized in that the load-bearing structure is cold-formed thin-wall section steel, and the buildings are low in height, good in heat-insulating and energy-saving effects, short in construction period, low in engineering construction cost and the like. The method is characterized in that the method is influenced by the self characteristics of a cold-bending thin-walled steel structure, and a fireproof protection measure for the cold-bending thin-walled steel structure is a problem which is difficult to solve; the anti-cracking cement mortar can produce a fireproof protection effect on the cold-formed thin-walled steel, but the anti-cracking cement mortar needs to be subjected to a large amount of plastering wet operation on a construction site, is not environment-friendly, loses the characteristics of cold-formed thin-walled steel assembly type construction buildings, is high in construction cost and lacks effective fireproof measures.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a thin-walled cold-formed steel fire resistive construction to solve the problem that current light steel structure building lacks effective fire prevention measure.
In order to solve the technical problem, the utility model provides a technical scheme lies in:
a cold-formed thin-walled steel fireproof structure comprises a heat-insulating plate, a light heat-insulating cement fiber plate and anti-cracking cement mortar; the light heat-preservation cement fiber boards are arranged on two surfaces of the heat-preservation board; the heat insulation board comprises a light steel keel frame, and EPS materials are filled in the light steel keel frame; the light heat-preservation cement fiberboard is a cement fiberboard with EPS particles uniformly distributed; the anti-cracking cement mortar is coated on one side of the light heat-insulation cement fiberboard, which is far away from the heat-insulation board.
Furthermore, two parallel side edges of the heat insulation board are respectively provided with a convex rabbet and a concave rabbet; the convex rabbet is inserted into the concave rabbet of the adjacent heat-insulation plate to form a splicing seam.
Furthermore, abutted seams are arranged between the adjacent light heat-insulating cement fiber boards, and the abutted seams are filled with a fireproof joint mixture; the splicing seams are staggered.
Furthermore, the cold-formed thin-walled steel fireproof structure further comprises glass fiber gridding cloth, and the glass fiber gridding cloth is arranged between the light heat-preservation cement fiber board and the anti-cracking cement mortar and is positioned at the abutted seam.
Furthermore, the cold-formed thin-wall section steel fireproof structure also comprises a self-tapping screw, and the self-tapping screw penetrates through the light heat-insulating cement fiberboard and then is inserted into the light steel keel frame; the self-tapping screw is embedded into the light heat-insulating cement fiberboard by 1-2mm.
Furthermore, the tapping screw attacks the nail hole generated by the lightweight thermal insulation cement fiberboard and is sealed by the fireproof joint mixture.
Furthermore, the EPS material has a combustion performance grade of B1 grade and above.
Further, the light steel keel frame comprises 8 mutually parallel keels; 8 fossil fragments enclose into rectangular frame, and four fossil fragments set up in rectangular frame's four corners, and two long limits of rectangular frame respectively contain four fossil fragments.
Furthermore, the light steel keel frame also comprises connecting angle steel, and four keels contained on the long side of the rectangular frame are connected by the connecting angle steel.
Further, the thickness of the anti-cracking cement mortar is 3mm.
Synthesize above-mentioned technical scheme, the utility model discloses the technological effect that can realize lies in:
the utility model provides a cold-formed thin-walled steel fireproof structure, which comprises a heat-insulating plate, a light heat-insulating cement fiber board and anti-cracking cement mortar; the light heat-preservation cement fiber boards are arranged on two surfaces of the heat-preservation board; the heat insulation board comprises a light steel keel frame, and EPS materials are filled in the light steel keel frame; the light heat-preservation cement fiberboard is a cement fiberboard with EPS particles uniformly distributed; the anti-cracking cement mortar is coated on one side of the light heat-insulation cement fiberboard, which is far away from the heat-insulation board.
Because the utility model provides a thin-walled cold-formed steel fire resistive construction passes through the EPS material in the heated board and the light heat preservation cement fiberboard who contains the EPS granule promotes the fire behavior of self. When the light steel keel frame is heated, the temperature rise speed of the heat insulation board can be slowed down due to the heat insulation performance of the light heat insulation cement fiber board, so that the fire resistance time of the light steel keel frame is prolonged; simultaneously, the EPS material filled in the light steel keel frame can ensure that the heat-insulation board is only melted and not combusted under the protection of the light heat-insulation cement fiber board, so that the self strength of the heat-insulation board is ensured while the self weight is reduced, and the fireproof performance is improved.
In addition, cellular hole can appear in the light heat preservation cement fiberboard when receiving the fire, avoids light heat preservation cement fiberboard to appear "explode and split" phenomenon because of expend with heat and contract with cold, can prevent that light heat preservation cement fiberboard from breaking away from the heated board, guarantees the separation to the burning things which may cause a fire disaster, avoids light heat preservation cement fiberboard to explode and split and become invalid because of receiving the fire, has guaranteed the refractory time.
Meanwhile, compared with the modes of installing gypsum boards, calcium silicate boards or painting anti-crack cement mortar and the like, a large amount of painting wet operation is reduced, the construction cost is reduced, and the environment-friendly effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a fireproof structure of cold-formed thin-walled steel provided by an embodiment of the present invention;
fig. 2 is a top view of a fireproof structure of cold-formed thin-walled steel provided in an embodiment of the present invention;
fig. 3 is a structural schematic diagram of a light steel keel frame.
An icon: 100-a heat-insulating board; 200-light heat preservation cement fiber board; 300-self-tapping screws; 110-light gauge steel framework; 111-keel; 112-connecting angle steel; 113-a connecting plate; a, splicing seams; b, splicing seams.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with each other without conflict.
The method is characterized in that the method is influenced by the self characteristics of a cold-bending thin-walled steel structure, and a fireproof protection measure for the cold-bending thin-walled steel structure is a problem which is difficult to solve; the anti-cracking cement mortar can play a role in fireproof protection on the cold-formed thin-wall section steel, but a large amount of plastering wet operation is required on a construction site.
In view of the above, the utility model provides a thin-walled cold-formed steel fireproof structure, including heated board 100, light heat preservation cement fiberboard 200 and anti-crack cement mortar; the light heat-preservation cement fiber board 200 is arranged on two sides of the heat-preservation board 100; the heat insulation board 100 comprises a light steel keel frame 110, wherein EPS materials are filled in the light steel keel frame 110; the light heat-preservation cement fiberboard 200 is a cement fiberboard with EPS particles uniformly distributed; the anti-cracking cement mortar is coated on one side of the light heat-insulation cement fiber board 200, which is far away from the heat-insulation board 100.
Because the utility model provides a thin-walled cold-formed steel fire resistive construction passes through the EPS material in the heated board 100 and the light heat preservation cement fiberboard 200 that contains the EPS granule promotes the fire behavior of self. When heated, the heat insulation performance of the light heat insulation cement fiber board 200 can slow down the temperature rise speed of the heat insulation board 100, thereby prolonging the fire-resistant time of the light steel keel frame 110; meanwhile, the EPS material filled in the light steel keel frame 110 can ensure that the heat-insulation board 100 is only melted and not combusted under the protection of the light heat-insulation cement fiber board 200, so that the self strength of the heat-insulation board 100 is ensured while the self weight is reduced, and the fireproof performance is improved.
In addition, can appear cellular hole in the light heat preservation cement fiberboard 200 when receiving the fire, avoid light heat preservation cement fiberboard 200 to appear "exploding" phenomenon because of expend with heat and contract with cold, can prevent that light heat preservation cement fiberboard 200 from breaking away from heated board 100, guarantee the separation to the burning things which may cause a fire disaster, avoid light heat preservation cement fiberboard 200 to break out of work because of receiving the fire, guaranteed the refractory time.
Meanwhile, compared with the modes of installing gypsum boards, calcium silicate boards or painting anti-crack cement mortar and the like, a large amount of painting wet operation is reduced, the construction cost is reduced, and the environment-friendly effect is improved.
The structure and shape of the fireproof structure of the thin-walled cold-formed steel provided in this embodiment are described in detail below with reference to fig. 1 to 3:
in an alternative of this embodiment, two parallel side edges of the heat-insulating board 100 are respectively provided with a convex tongue-and-groove and a concave tongue-and-groove; the convex rabbet is inserted into the concave rabbet of the adjacent insulation board 100 and forms a splicing seam a. As shown in fig. 1 and 3, the convex rabbet and the concave rabbet extend in the vertical direction, and the convex rabbet is inserted into the concave rabbet of the adjacent insulation boards 100, so that the insulation boards 100 are tightly connected, and the effects of moisture preservation, moisture prevention and heat preservation are improved.
The convex bezel and the concave bezel in this embodiment are directly molded when the EPS material is filled. Specifically, as shown in fig. 2, the convex tongue-and-groove is a trapezoidal protrusion, the concave tongue-and-groove is a trapezoidal groove, and the convex tongue-and-groove is inserted into the concave tongue-and-groove to form a splicing seam a.
In an alternative of this embodiment, the light gauge steel frame 110 includes 8 mutually parallel keels 111, as shown in fig. 3, the 8 keels 111 enclose a rectangular frame, four keels 111 are disposed at four corners of the rectangular frame, and two long sides of the rectangular frame respectively include the four keels 111.
Specifically, the keels 111 are made of cold-formed thin-walled C-shaped steel, the C-shaped openings of the two keels 111 arranged in the short side direction of the rectangular frame are opposite, and the two keels 111 keep a certain distance to fully fill the EPS material, thereby ensuring the heat preservation and fire resistance. The web of C shape steel is outwards in order to press close to light heat preservation cement fiberboard 200, the installation of light heat preservation cement fiberboard 200 of being convenient for to be favorable to promoting the intensity on heated board 100 surface, prevent that heated board 100 from receiving to take place to warp behind the external force.
The light gauge steel frame 110 further includes connecting angles 112 and a connecting plate 113, four keels 111 included in the long sides of the rectangular frame are connected by the connecting angles 112, and the connecting plate 113 connects the two connecting angles 112, as shown in fig. 3. Specifically, the angle connecting bar 112 is perpendicular to the keel 111, one side of the angle connecting bar 112 abuts against the end of the keel 111, and the other side abuts against the side of the keel 111; meanwhile, the two keels 111 arranged along the short side direction of the rectangular frame are connected by the connecting plate 113, so that the strength of the light steel keel frame 110 is improved.
In this embodiment, the burning performance grade of EPS material is B1 level and above in the heated board 100, through filling EPS material, has promoted fire prevention, heat preservation and sound insulation performance, has reduced heated board 100's weight, has promoted comfort level and the security of living.
In this embodiment, the lightweight thermal insulation cement fiberboard 200 is produced by adding EPS particles with a combustion performance level of B1 to the cement fiberboard, and the EPS particles are uniformly distributed in the cement fiberboard, so that the volume weight is reduced, the flexural strength of the lightweight thermal insulation cement fiberboard 200 can reach more than 15Mpa, and the combustion performance level can also reach a level, thereby ensuring that the thermal insulation board 100 is only melted and not combusted when being fired.
In the alternative of this embodiment, be provided with piece b between the adjacent light weight heat preservation cement fiberboard 200, through setting up piece b in order to eliminate the influence that light weight heat preservation cement fiberboard 200 brought because of the shape irregularity. If the side lines of the light heat-insulating cement fiber boards 200 are inclined, a gap is left when the two light heat-insulating cement fiber boards 200 are tightly attached, and the gap is usually small, so that the gap is inconvenient to fill. Therefore, enough space is left when the lightweight heat-insulating cement fiber board 200 is installed to form a seam b, and the seam b is filled with a fireproof joint mixture to ensure the fireproof performance and the heat-insulating performance. As shown in fig. 1 and 2, the abutted seam b is staggered from the abutted seam a to improve the heat insulation performance and the fire resistance and prevent the adverse effect caused by the abutted seam a.
Specifically, the width of the seam b can be selected to be 5mm.
In an alternative scheme of this embodiment, the thin-walled cold-formed steel fireproof structure further includes a tapping screw 300, and the tapping screw 300 penetrates through the lightweight thermal insulation cement fiber board 200 and then is inserted into the light steel keel frame 110, so as to fix the lightweight thermal insulation cement fiber board 200 on the thermal insulation board 100; accordingly, the fillets b are formed at the positions of the keels 111 to secure the installation of the tapping screw 300. Specifically, the self-tapping screw 300 is sunk into the lightweight thermal insulation cement fiberboard 200 to a depth of 1-2mm, and a nail hole generated when the self-tapping screw 300 taps into the lightweight thermal insulation cement fiberboard 200 is sealed by a fireproof joint mixture, so that the fireproof performance is ensured.
In the alternative of this embodiment, the cold-formed thin-walled steel fireproof structure still includes glass fiber net check cloth, and glass fiber net check cloth sets up between light heat preservation cement fiberboard 200 and anti-crack cement mortar and is located piece b department, covers piece b through glass fiber net check cloth, then applies paint anti-crack cement mortar with a brush, prevents the cracking of anti-crack cement mortar in piece b department.
Further, the thickness of the anti-cracking cement mortar is 3mm.
When the thin-walled cold-formed steel fireproof structure provided by the embodiment is used, firstly, the heat-insulating plate 100 is spliced through the convex rabbet and the concave rabbet, then the light heat-insulating cement fiber board 200 is fixed on two sides of the heat-insulating plate 100 by using the tapping screws 300, and then the nail holes and the abutted seams b are sealed by using the fireproof joint mixture. And finally, arranging glass fiber gridding cloth at the abutted seam b, and coating anti-crack cement mortar on the light heat-insulation cement fiber board 200.
The light heat preservation cement fiberboard 200 of the thin-walled cold-formed steel fireproof structure that this embodiment provided is inside appears cellular hole when receiving fire to avoid light heat preservation cement fiberboard 200 to appear "explode and split" phenomenon because of expend with heat and contract with cold, prevent that light heat preservation cement fiberboard 200 can not effectively play the fire prevention effect, appear one be heated and drop or lose the effect of keeping apart flame and temperature. The temperature rise speed of the heat insulation board 100 can be reduced through the heat insulation performance of the light heat insulation cement fiber board 200, and the fire resistance time of the light steel keel frame 110 is prolonged.
The EPS material filled in the light steel keel frame 110 has the sound insulation effect while realizing heat preservation and heat insulation, and improves the living safety and comfort.
Meanwhile, the anti-cracking cement mortar with the thickness of 3mm is only required to be coated, so that a large amount of plastering wet operation is reduced, the construction cost is reduced, the construction period is shortened, and the environment is protected.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (10)
1. A thin-walled cold-formed steel fireproof structure is characterized by comprising an insulation board (100), a light insulation cement fiber board (200) and anti-crack cement mortar;
the light heat-preservation cement fiber boards (200) are arranged on two surfaces of the heat-preservation board (100);
the heat insulation board (100) comprises a light steel keel frame (110), wherein EPS materials are filled in the light steel keel frame (110);
the light heat-preservation cement fiberboard (200) is a cement fiberboard with EPS particles uniformly distributed;
the anti-cracking cement mortar is coated on one surface of the light heat-insulation cement fiber board (200) deviating from the heat-insulation board (100).
2. The fireproof structure of cold-formed thin-walled steel according to claim 1, wherein two parallel sides of the heat-insulating plate (100) are respectively provided with a convex rabbet and a concave rabbet;
the convex rabbet is inserted into the concave rabbet of the adjacent heat-insulation plate (100) to form a splicing seam (a).
3. The fireproof structure of cold-formed thin-walled steel according to claim 2, wherein a seam (b) is arranged between the adjacent lightweight heat-insulating cement fiber boards (200), and a fireproof joint mixture is filled in the seam (b);
the splicing seams (b) and the splicing seams (a) are staggered.
4. The fireproof structure of cold-formed thin-walled steel according to claim 3, further comprising fiberglass mesh cloth, wherein the fiberglass mesh cloth is disposed between the lightweight thermal insulation cement fiberboard (200) and the crack-resistant cement mortar and is located at the abutted seam (b).
5. The fireproof structure of cold-formed thin-walled steel sections according to claim 4, further comprising self-tapping screws (300), wherein the self-tapping screws (300) are inserted into the light gauge steel frame (110) after passing through the lightweight thermal insulation cement fiberboard (200);
the self-tapping screw (300) is immersed in the light heat-insulation cement fiberboard (200) by 1-2mm.
6. The fireproof structure of cold-formed thin-walled steel sections according to claim 5, wherein the nail holes generated by tapping screws (300) into the lightweight thermal insulation cement fiberboard (200) are closed by the fireproof caulking agent.
7. The fireproof structure of cold-formed thin-walled steel according to claim 1, wherein the EPS material has a combustion performance rating of B1 or more.
8. A fire protection structure for cold-formed thin-walled steel sections according to claim 1, wherein the light gauge steel frame (110) comprises 8 mutually parallel runners (111);
8 fossil fragments (111) enclose into rectangular frame, four fossil fragments (111) set up in rectangular frame's four corners, two long limits of rectangular frame respectively contain four fossil fragments (111).
9. The fireproof structure of cold-formed thin-walled steel sections according to claim 8, wherein the light gauge steel frame (110) further comprises connecting angles (112), and four of the keels (111) included in the long side of the rectangular frame are connected by the connecting angles (112).
10. The fireproof structure of cold-formed thin-walled steel sections according to claim 1, wherein the thickness of the crack-resistant cement mortar is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221682331.4U CN218580909U (en) | 2022-06-30 | 2022-06-30 | Fireproof structure of cold-formed thin-walled steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221682331.4U CN218580909U (en) | 2022-06-30 | 2022-06-30 | Fireproof structure of cold-formed thin-walled steel |
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| Publication Number | Publication Date |
|---|---|
| CN218580909U true CN218580909U (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221682331.4U Active CN218580909U (en) | 2022-06-30 | 2022-06-30 | Fireproof structure of cold-formed thin-walled steel |
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| CN (1) | CN218580909U (en) |
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- 2022-06-30 CN CN202221682331.4U patent/CN218580909U/en active Active
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