CN219411274U

CN219411274U - Interlayer refractory structure board convenient for firewall connection

Info

Publication number: CN219411274U
Application number: CN202320415978.9U
Authority: CN
Inventors: 石伟; 麦科愿; 肖潇; 喻杰; 张铭; 张艳芬
Original assignee: Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co Ltd
Current assignee: Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co Ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-07-25
Anticipated expiration: 2033-03-08

Abstract

The utility model discloses an interlayer refractory structural plate convenient for firewall connection, a concrete structural beam and a concrete floor slab are connected in a pouring way and extend upwards and downwards, structural planting ribs are arranged in the concrete structural beam, inserting grooves which extend along the length direction and can be inserted with the firewall are respectively formed in the upper end face and the lower end face of the concrete structural beam, and thin steel structure fireproof coating layers are smeared on the surfaces of at least the upper end face, the lower end face and the inserting grooves of the concrete structural beam. According to the utility model, the concrete constructional beam with the built-in constructional bar is poured on the concrete floor slab, and the splicing grooves are arranged on the upper end face and the lower end face of the concrete constructional beam and the thin fireproof coating layer is smeared, so that the concrete constructional beam is convenient to connect with a firewall and supports the weight of the firewall to ensure the safety of a building structure, the fire resistance limit of the structure can be improved, the use function and the later decoration requirement of the building can be met more easily, and the concrete constructional beam has the characteristics of simple structure, convenience in construction, high fire resistance limit, safety, reliability and convenience in later decoration.

Description

Interlayer refractory structure board convenient for firewall connection

Technical Field

The utility model belongs to the technical field of constructional engineering, and particularly relates to an interlayer fireproof structural plate which is simple in structure, convenient to construct, high in fireproof limit, safe, reliable and convenient for later decoration and fitment and is convenient for firewall connection.

Background

In the existing building, part of the preset firewall construction positions cannot be provided with common cross beams due to stress conditions or space limitation, so that steel structures or common concrete structure plates are commonly adopted to replace cross beam bearing firewalls. However, in the general building fire-proof standard, reinforced concrete structures or steel structural members for bearing in the building should be subjected to fire resistance verification and fire protection design according to fire resistance limit, stress condition and the like, or fire resistance test is adopted to verify the fire resistance, but the fire resistance limit of the existing structural plates for connecting and setting up on the fire wall cannot meet the design requirement.

In the prior art, in order to improve the problem of low fire resistance limit of the structural plate, the following technical schemes are generally adopted for improvement: (1) appropriately increasing the cross-sectional size of the structural member: the larger the cross-sectional size of the structural member, the greater its fire resistance limit. (2) increasing the thickness of the concrete protective layer: because the fire resistance of the reinforced concrete structural member mainly depends on the strength change under the high temperature of the stressed bars, the thickness of the protective layer is increased, so that the transfer time of heat in a fire disaster high-temperature place to the steel bars in the building structural member can be delayed and reduced, the purpose of slowing down the temperature rise of the steel bars and enabling the strength of the steel bars not to be reduced too fast is achieved, and the fire resistance limit of the structural member can be improved. (3) adding a fireproof heat-insulating layer to the steel structural member: the heat-insulating layer and the fireproof layer are wrapped outside, so that the transmission speed of heat to the steel structure can be delayed, and the speed of reducing the strength of the steel structure is slowed down to improve the fireproof limit. (4) reasonable refractory structural design: the purpose of the structural design is to resist the deflection and fracture of the structure by adopting ingenious constraint, and the reasonable structural design can prolong the fire resistance limit of the structural member and improve the safety and the economy of the structural member. However, the above-mentioned technical solutions of increasing the cross-sectional size, increasing the thickness of the concrete protection layer and increasing the fireproof insulation layer not only lead to an increase in cost, but also occupy too much space. Therefore, the reasonable refractory structural design is the key for perfectly solving the problem, but the prior reasonable refractory structural design can partially avoid the problem, but also has the problems of complex structure and inconvenient later decoration and fitment, and the connection of the part of refractory structural design and the refractory wall needs expansion screws or connecting pieces and coating fireproof sealant, so that the construction is complicated.

Disclosure of Invention

According to the defects of the prior art, the utility model provides the interlayer fireproof structural plate which is simple in structure, convenient to construct, high in fireproof limit, safe, reliable and convenient for later decoration and fitment and is convenient for firewall connection.

The utility model is realized in the following way: the concrete structure beam is connected with a concrete floor slab in a pouring mode and extends upwards and downwards, the structure planting ribs are arranged in the concrete structure beam, inserting grooves which extend along the length direction and can be inserted into a firewall are formed in the upper end face and the lower end face of the concrete structure beam respectively, and a smeared thin steel structure fireproof coating layer is arranged on the surfaces of at least the upper end face, the lower end face and the inserting grooves.

The utility model has the beneficial effects that:

1. according to the utility model, the concrete constructional beam with built-in constructional steel bar is poured on the concrete floor slab, and the upper end face and the lower end face of the concrete constructional beam are provided with splicing grooves and coated with thin fireproof paint layers. Because the concrete constructional beams wrap the concrete floor slab through pouring, when a fire disaster occurs in the upper layer or the lower layer, the concrete constructional beams on the opposite sides can be isolated from being directly contacted with flame through the concrete floor slab, so that the fire resistance limit of the interlayer fire-resistant structural slab can be improved; and the thin fireproof paint is coated on the connecting interface between the fireproof wall and the fireproof wall, so that the material is saved compared with thicker fireproof paint, and the fireproof limit of the interlayer fireproof structural plate can be further improved.

2. According to the utility model, the concrete constructional beam wraps the concrete floor slab through pouring, the constructional embedded ribs are also built in, and the lower part of the constructional embedded ribs is connected with the firewall at the lower layer, so that the interlayer fireproof structural plate can safely and reliably support the firewall at the upper layer through the firewall at the lower layer and the support of the floor slab, thereby meeting the requirement of structural stress and ensuring the safety of a building structure; and because of the support of the floor slab and the lower firewall and the reinforcement of the structural planted ribs, the cross section size and the cost can be reduced, and the occupied thin fireproof paint can be obviously reduced, so that the maximization of the indoor space can be realized, and the post-decoration is convenient due to the smaller volume and the single material.

3. According to the utility model, the splicing grooves are arranged on the upper end face and the lower end face of the concrete structural beam, so that the splicing grooves are convenient for splicing connection with the fire wall, the construction is simplified to improve the construction efficiency, and the splicing type connecting structure can also improve the stability of connection and the fireproof blocking effect of the connecting part, so that the fireproof limit of the interlayer fireproof structural plate can be further improved.

In conclusion, the fireproof structure for planting ribs, reserving the inserting grooves and coating the thin fireproof coating solves the problem that reasonable fireproof structural design cannot be carried out in structural arrangement, and the fireproof structure has the characteristics of simple structure, convenience in construction, high fireproof limit, safety, reliability and convenience in later decoration.

Drawings

FIG. 1 is a schematic diagram of one embodiment of the present utility model;

FIG. 2 is a second schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic perspective view of FIG. 1;

in the figure: 1-concrete constructional beams, 11-upper beams, 12-lower beams, 2-constructional embedded ribs, 21-side rods, 22-connecting hooks, 23-longitudinal ribs, 3-concrete floors, 4-inserting grooves, 5-fire-proof walls and 6-thin steel structure fireproof coating layers.

Detailed Description

The utility model is further illustrated in the following figures and examples, which are not intended to be limiting in any way, and any alterations or modifications based on the teachings of the utility model are within the scope of the utility model.

As shown in fig. 1 to 3, the utility model comprises a concrete construction beam 1 and construction planting bars 2, wherein the concrete construction beam 1 is connected with a concrete floor slab 3 in a pouring way and extends upwards and downwards, the construction planting bars 2 are arranged in the concrete construction beam 1, the upper end face and the lower end face of the concrete construction beam 1 are respectively provided with a splicing groove 4 which extends along the length direction and can be spliced with a firewall 5, and the surfaces of at least the upper end face, the lower end face and the splicing groove 4 of the concrete construction beam 1 are provided with a smeared thin steel structure fireproof coating layer 6.

The concrete structure beam 1 comprises an upper beam 11 and a lower beam 12, wherein the upper beam 11 and the lower beam 12 are respectively symmetrically poured on the upper surface and the lower surface of the upper and lower concrete floors 3, and the structure planting bars 2 are respectively arranged in the upper beam 11 and the lower beam 12. So set up, can avoid the destruction to the 3 structural integrity of concrete floor to can improve holistic bearing capacity, and can also form comparatively tight seal in order to improve the fireproof effect between the upper and lower floor, also can effectively simplify the construction and improve the efficiency of construction moreover.

The structural bar 2 comprises transverse bars perpendicular to the length direction of the concrete structural beam 1, the transverse bars in the upper beam 11 and the lower beam 12 are of a [ "or" M "structure with opposite openings, and side bars 21 on two sides extend into the concrete floor slab 3.

The bottom of the side rod 21 of the transverse bar of the structural bar planting 2 is provided with a connecting hook 22, and the side rod 21 and/or the connecting hook 22 are/is connected with the bar planting tie of the concrete floor 3.

The structural reinforcement bar 2 further comprises longitudinal bars 23 which are connected with the transverse bars and are in the same direction with the length direction of the concrete structural beam 1, and a plurality of longitudinal bars 23 which extend along the length direction are respectively arranged at intervals on the upper beam 11 and the lower beam 12.

The widths of the upper end face and the lower end face of the concrete structural beam 1 are larger than the thickness of the fire wall 5, the inserting grooves 4 are formed in the middle or at one side of the upper end face and the lower end face of the concrete structural beam 1, and the inserting grooves 4 are rectangular grooves, trapezoid grooves or arc grooves corresponding to the inserting parts of the fire wall 5 in shape.

A gap is reserved when the plug groove 4 is assembled with the plug part of the firewall 5.

The plugging groove 4 is filled with cement mortar or stone glue and then is fixedly plugged with the plugging part of the firewall 5.

The cement in the cement mortar is white cement.

The thickness of the thin steel structure fireproof paint layer 6 is 3-7 mm.

As shown in fig. 1, 2 and 3, the construction process of the present utility model is as follows:

1. and after the construction of the interlayer refractory structural plates and the fire wall 5 of the next floor is completed according to the pouring sequence, the construction of the concrete constructional beam 1 and the fire wall 5 of the upper floor is carried out.

2. According to the design requirement, bundling the construction plant bars 2 on the corresponding concrete floor slab 3, and then supporting the mould according to the size of the concrete construction beam 1, the mould is supported by taking the position of the 50mm wide and 100mm deep inserting grooves 4 reserved in the middle of the concrete construction beam 1, and the distance between the edge of the concrete construction beam 1 and the edge of the pre-installed fire wall 5 is 50mm.

3. Pouring the concrete constructional beam 1 according to the design, coating the upper surface, the lower surface and the surface of the plugging groove 4 to form a thin steel structure fireproof coating layer 6 with the thickness of 3-7 mm after curing is finished, and ensuring that a gap exists between the plugging groove 4 coated with the thin steel structure fireproof coating layer 6 and the plugging part of the pre-installed firewall 5.

4. And (3) checking the fire resistance and heat insulation of the interlayer fire-resistant structural plate, filling cement mortar or stone glue into the inserting groove 4 after the interlayer fire-resistant structural plate is qualified, and then embedding the fire wall 5 into the inserting groove 4.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. The utility model provides a interlaminar fire-resistant structure board convenient to prevent wall connection, its characterized in that includes concrete structure roof beam (1), structure planting muscle (2), concrete structure roof beam (1) pour with concrete floor (3) and be connected and upwards and downwardly extend, structure planting muscle (2) set up in concrete structure roof beam (1), spliced groove (4) that extend along length direction and can peg graft with firewall (5) are offered respectively to the up end and the lower terminal surface of concrete structure roof beam (1), the surface of concrete structure roof beam (1) at least up end, lower terminal surface and spliced groove (4) is provided with thin steel construction fire prevention dope layer (6) of scribbling.

2. The interlayer refractory structural slab convenient for firewall connection according to claim 1, wherein the concrete structural beam (1) comprises an upper beam (11) and a lower beam (12), the upper beam (11) and the lower beam (12) are respectively symmetrically poured on the upper surface and the lower surface of the upper and lower concrete floors (3), and the structural planting bars (2) are respectively arranged in the upper beam (11) and the lower beam (12).

3. The interlayer refractory structural slab for facilitating firewall connection according to claim 2, wherein the structural steel bar (2) comprises transverse steel bars perpendicular to the length direction of the concrete structural beam (1), the transverse steel bars in the upper beam (11) and the lower beam (12) are in a [ -shaped or M-shaped structure with opposite openings, and side bars (21) on two sides extend into the concrete floor slab (3).

4. An interlayer refractory structure plate convenient for firewall connection according to claim 3, characterized in that the bottom of a side rod (21) of a transverse rib of the structural reinforcement (2) is provided with a connecting hook (22), and the side rod (21) and/or the connecting hook (22) are in strapping connection with the reinforcement of the concrete floor (3).

5. The interlayer refractory structural plate for facilitating firewall connection according to claim 3, wherein the structural reinforcement (2) further comprises longitudinal ribs (23) connected with the transverse ribs and in the same direction as the length direction of the concrete structural beam (1), and a plurality of longitudinal ribs (23) extending in the length direction are respectively arranged at intervals on the upper beam (11) and the lower beam (12).

6. The interlayer refractory structural panel for facilitating firewall connection according to any one of claims 1 to 5, characterized in that the widths of the upper end face and the lower end face of the concrete structural beam (1) are larger than the thickness of the firewall (5), the insertion groove (4) is formed in the middle or at one side of the upper end face and the lower end face of the concrete structural beam (1), and the insertion groove (4) is a rectangular groove, a trapezoid groove or an arc groove corresponding to the shape of the insertion part of the firewall (5).

7. The interlayer refractory structure plate for facilitating firewall connection according to claim 6, wherein a gap is left between the insertion groove (4) and the insertion portion of the firewall (5) when the insertion groove is assembled.

8. The interlayer refractory structure plate convenient for firewall connection according to claim 7, wherein the insertion groove (4) is inserted and fixed with the insertion part of the firewall (5) after being filled with cement mortar or stone glue.

9. The interlayer refractory structural panel for facilitating firewall connection according to claim 5, wherein the thickness of the thin steel structure fireproof paint layer (6) is 3 to 7mm.