KR101912600B1 - Floor structures of building evacuation member using cantilever and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to a cantilever type fire evacuation structure integrated with a building and an installation method thereof. In more detail, the cantilever type fire evacuation structure according to the present invention comprises: a floor plate member fixed and mounted on a wall surface of a high-rise building to be extended on the horizon, and having a through hole formed in one side so that people can pass through and evacuation devices including a ladder can be arranged in the through hole; an accommodation space formed inside the floor plate member; a plurality of first floor plate reinforcing bars extending from reinforcing bars of the wall surface and arranged to be parallel inside the accommodation space excluding the through hole in a first direction; a plurality of second floor plate reinforcing bars extending from the reinforcing bars of the wall surface and arranged to be parallel in a second direction to intersect with the first floor plate reinforcing bars; and a floor plate concrete layer poured to the floor plate reinforcing bars in the accommodation space. The cantilever type fire evacuation structure integrated with a building can reinforce rigidity of wire meshes by joining and integrating intersecting points of the second floor plate reinforcing bars intersecting with the plurality of first floor plate reinforcing bars.

Description

TECHNICAL FIELD [0001] The present invention relates to a fire extinguishing structure, an installation method, and a manufacturing method of a building-integrated fire extinguishing structure using a cantilever method,

The present invention relates to a building-integrated fire escape structure using a cantilever system and a method of installing the same, and more particularly, A bottom plate member for a refuge structure of a high-rise building having a through-hole through which an evacuation device including a ladder is disposed; A receiving space formed inside the bottom plate member; A plurality of first bottom plate reinforcing bars extending from the reinforcing bars of the wall and arranged in the first direction inside the accommodation space except for the through holes; A plurality of second bottom plate reinforcing bars extending from the wall reinforcing bars and disposed in parallel in a second direction intersecting the first bottom plate reinforcing bars; And a bottom plate concrete layer laid on the bottom plate reinforcing bars in the accommodating space, wherein the intersections of the plurality of first bottom plate reinforcing bars and the second bottom plate reinforcing bars intersecting with each other are integrated to reinforce the rigidity of the wire netting The present invention relates to a fire extinguishing structure and an installation method using the cantilever method.

Generally, when there is a fire in a high-rise building, there is no space to avoid the fire and there is no means to avoid it in other places, so it is often the case that the toxic gas contained in the hot flames and smoke causes a great deal of damage.

Multi-storey structures such as apartments and villas are equipped with emergency escape means to allow residents to evacuate quickly in the event of an emergency, such as a fire or an earthquake. Emergency escape facilities, which are installed on veranda or verandah rails, There is a top-down evacuation zone.

Generally, the welded wire mesh is a lattice type wire mesh which is made by using high strength steel bars and vertically arranging vertical steel bars and lateral steel bars and joining intersections by electric resistance welding. It is used for concrete pouring of concrete floors, ceilings, Is used to prevent cracks and cracks that occur when the concrete is shrunk and expanded during the production of the concrete structure, and to reinforce the tensile strength that is insufficient for the concrete.

Conventional welded wire mesh has been used as a network structure in two directions by using the same reinforcing bars to limit the effect of preventing cracks and cracks of concrete and to be used for work requiring higher tensile strength depending on the use of concrete There is a problem in that the working cost is increased by using a thick reinforcing bar by increasing the diameter of the reinforcing bar.

However, in the case of such a top-down type evacuation system, the concrete construction method occupies a large area of the evacuation rail, so the material cost and the labor cost are increased and it is not good for the aesthetics.

Also, in the conventional method of assembling the supporting bracket in the lower part, the concrete member extending horizontally on the wall of the existing high-rise building occupies a large area and has a problem that a large amount of material is contained. It is necessary to reinforce the rigidity used.

Korea Patent Publication No. 2011-0024910 Korean Patent No. 1153786

SUMMARY OF THE INVENTION The present invention is conceived to solve the problems as described above, and it is an object of the present invention to provide a method of manufacturing a steel plate, So as to enhance the rigidity of the wire net, and to provide a building-integrated fire escape structure using the cantilever system.

In addition, the present invention provides a fire extinguishing structure having a fixed folding structure in the form of a boomerang and a cantilever structure in which a through hole is formed only at one end for convenience of manufacture, The purpose is to provide.

In order to solve the above-described problems, the present invention provides a high-rise building which is fixedly installed on a wall of a high-rise building so as to extend horizontally and has a through hole through which a person can pass through and a refuge including the ladder is disposed therein A bottom plate member for an evacuation structure; A receiving space formed inside the bottom plate member; A plurality of first bottom plate reinforcing bars extending from the reinforcing bars of the wall and arranged in the first direction inside the accommodation space except for the through holes; A plurality of second bottom plate reinforcing bars extending from the wall reinforcing bars and disposed in parallel in a second direction intersecting the first bottom plate reinforcing bars; And a bottom plate concrete layer laid on the bottom plate reinforcing bars in the accommodating space, wherein the intersections of the plurality of first bottom plate reinforcing bars and the second bottom plate reinforcing bars intersecting with each other are integrated to reinforce the rigidity of the wire netting .

And the intersection is spot welded to form a reinforcing mesh network.

The present invention provides a method of manufacturing a steel plate, comprising the steps of: preparing a bottom plate member through which a reinforcing bar penetrates and whose upper side is opened for pouring concrete; Joining the bottom plate member to extend horizontally on the wall surface of the high-rise building; A step of inserting a bottom plate reinforcing bar into a receiving space formed inside the bottom plate member in a lattice shape extending from a reinforcing bar of a wall; Fixing the bottom plate reinforcing bars arranged in the lattice shape by spot welding; And a bottom plate concrete layer is placed in the receiving space.

And further comprising a metal wire mesh and a long fiber reinforced thermoplastic resin below or above the bottom plate reinforcing bars.

The thermoplastic resin may be an aromatic vinyl resin, a rubber modified aromatic vinyl resin, a polyphenylene ether resin, a polycarbonate resin, a polyester resin, a methacrylate resin, a polyarylene sulfide resin, a polyamide resin , A polyvinyl chloride resin, and a polyolefin resin.

The hinge further includes a pair of hinges connecting the upper cover and the lower cover to open into the space in which the evacuation device protecting the ladder is disposed, Fold structure, and the other hinge is a folding structure.

A ring is formed on both side surfaces of the through-hole so as to engage with a side surface of the opposite side of the mold and a portion where the first bottom plate reinforcing bar intersects with the second bottom plate reinforcing bar.

In the method for manufacturing a fire extinguishing structure with a built-in type building using the cantilever system of the present invention, when the through-hole is formed so as to be formed only at one end portion and a through-hole formed in the other side end portion is required, And then rotated 180 degrees. The method for manufacturing a fire extinguishing structure according to any one of the preceding claims,

According to the present invention as described above, concrete is installed in a reinforcing bar extending from a wall to a horizontal line without using a conventional bracket assembling method, so that the installation area, stability, and process are reduced, and the yield strength and tensile strength The strength can be dramatically increased.

In addition, the present invention has a higher tensile strength than that in the prior art in which cracks or cracks generated when the concrete is expanded or shrunk during the production of the concrete structure and the conventional steel bars having the same thickness are disposed.

Further, since the elastic clip of the elastic clip has an elastic ring which is opened elastically, and a wire mesh adjacent to the elastic ring is inserted, unless the opening of the elastic ring is pulled by artificially pulling the wire mesh, Do not fall out.

In addition, the present invention can improve repair and seismic performance of buildings and construction structures by using various materials to reinforce the rigidity of the wire net.

In addition, the present invention makes it possible to easily fix the case forming the through-hole, thereby assuring the stability of the operation.

In addition, according to the present invention, when the cover is opened or closed, a fixed folding structure in the form of a boomerang can generate a force to quickly fold the other hinges, so that the elderly or children can quickly and safely open and close the cover.

In addition, the present invention can be manufactured by integrating the through holes so as to be formed only at one end portion for convenience of manufacture.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a comparative view of a conventional invention according to an embodiment of the present invention; FIG.
FIG. 2 is a view showing the overall structure of a state in which reinforcing bars are inserted according to an embodiment of the present invention.
FIG. 3 is a view showing the overall structure of a building-integrated fire escape structure using a cantilever system according to an embodiment of the present invention.
FIG. 4 is a view showing an alarm device installed in a building-integrated fire escape structure using a cantilever system according to another embodiment of the present invention.
5 to 10 are views showing the overall structure of a building-integrated fire escape structure using a wire net and a support according to another embodiment of the present invention.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

As shown in Figs. 1 and 2, the present invention is a wall-mounted type air conditioner which is fixedly installed on a wall surface 1 of a high-rise building so as to extend horizontally from a floor 2, A bottom plate member (10) for an evacuation structure of a high-rise building in which a through-hole through which the evacuation device is disposed is formed, a receiving space (15) formed inside the bottom plate member, A plurality of first bottom plate reinforcing bars 11 arranged in parallel in a first direction within the accommodating space except for the first bottom plate reinforcing bars 11 and extending in a second direction perpendicular to the first bottom plate reinforcing bars 11, A plurality of second bottom plate reinforcing bars 12 arranged in the receiving space, and a bottom plate concrete layer laid on the bottom plate reinforcing bars in the accommodation space.

The second bottom plate reinforcing bars intersecting with the plurality of first bottom plate reinforcing bars are welded at equal intervals, and the section of the reinforcing bars may be an I bar of I-shape.

As an embodiment of the present invention, first and second bottom plate reinforcing bars 11 and 12 arranged at regular intervals may be provided with reinforcing bars having a lattice shape.

The reinforcing bars to be applied to the present invention may be plated or reinforced with PVC or the like to prevent corrosion depending on the place where the reinforcing bars are installed.

The present invention can reinforce the rigidity of the wire net by combining the plurality of first bottom plate reinforcing bars 11 and the intersections of the second bottom plate reinforcing bars 12 intersecting each other, It is possible to provide a welded wire net composed of a mesh.

Welded wire mesh according to an embodiment of the present invention is used as a substitute for reinforcing steel, which is used for pouring concrete on the floor, ceiling, wall and column of civil engineering works and buildings, and reinforcing bars 11 and 12 are firmly combined with concrete, , It prevents cracks and cracks, supports the shape of concrete structures such as concrete pipes more stably, and has high tensile strength, so that the concrete structure suppresses deformation.

As shown in FIG. 1 (a), since the structure of the fire escape escape guardrail according to the conventional bracket assembly method must be maintained at least 300 mm in order to prevent the concrete from cracking or breaking when the concrete is poured, The width needs to be 1200 mm or more, and the length to occupy a large area of 2100 mm or more. This concrete construction method occupies a large area of the escalator, which leads to an increase in material costs and labor costs, and is not good for aesthetics.

Accordingly, in order to overcome the present standard 1 (a) in which a through hole is required to be provided at a distance of 300 mm from the outline, the width of the concrete is 700 mm and the length is 1450 mm as shown in FIG. 1 (b) I have developed a method to put it in place.

To this end, as described above, the present invention combines the intersections of the plurality of first bottom plate reinforcing bars 11 and the second bottom plate reinforcing bars 12 intersecting to integrate the rigidity of the wire netting, can do.

The second bottom plate reinforcing ribs intersecting with the plurality of first bottom plate reinforcing bars are welded at equal intervals, and when the cutting face of the reinforcing bars is an I-shaped I-bar, the concrete is pushed into the minimum area smaller than the area can do.

2, the present invention includes a bottom plate member 10, a receiving space 15, bottom plate reinforcing bars 11 and 12, a bottom plate concrete layer (not shown) Device 35 and the like.

The bottom plate member 10 is fixedly installed on the wall surface of the high-rise building so as to extend horizontally, has a through-hole 20 through which a person can pass through, and an evacuation device including a folding- Is a member for an evacuation structure of a high-rise building.

In addition, the bottom plate member 10 may be made of a metal such as iron, and a through hole 20 through which a person can pass may be formed on one side or the other side. Inside the through hole 20, A refuge including the folding ladder 36 is disposed.

The hinge 211 may be provided on the upper portion of the through hole 20 so as to cover the cover 21 or 22 for opening or closing the through hole 20.

The rear side of the covers 21 and 22 is vertically moved in a state where the front lower portion of the covers 21 and 22 is axially coupled to the upper portion of the bottom plate member 10 in the vicinity of the upper front side of the through- So that the through-hole 20 can be opened and closed.

The receiving space 15 is a space formed inside the bottom plate member, and is a portion into which a bottom plate reinforcing bar and a bottom plate concrete layer enter.

As shown in FIG. 3, the bottom plate reinforcing bars 11 and 12 are reinforcing bars extending from the reinforcing bars of the wall surface and inserted into the accommodation space 15 except for the through-holes 20 in a lattice shape.

Although the bottom plate reinforcing bars 11 and 12 can be inserted in one layer or more in a lattice shape, the building integrated fire escape structure using the cantilever method according to the present invention is manufactured using a welded wire netting, Even if the plate member 10 has a smaller margin margin, it satisfies the durability of a predetermined value, so that even one-folded bottom plate reinforcing bars 11 and 12 have stability while observing the construction standard.

3, the outer plate 111 blocking the slope of the bottom plate member 10 is inserted into the bottom plate member 10 such that a receiving space 15 is formed on the bottom plate member 10, The front end portion and the rear end portion of the bottom plate member 10 may be extended to a predetermined length from the one end portion, the other end portion, the front end portion, and the rear end portion of the bottom plate member 10, respectively.

The inner plate 112 may extend from the one end, the other end, the front end and the rear end of the through hole 20 of the bottom plate member 10 to a predetermined length above the through hole 20 have.

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. Here, the bent portion of each reinforcing net can be worked with various tools.

In addition, the reinforcing bar clip A shown in the detailed sectional view of FIG. 2 has a first clip portion 10 'extending in a predetermined direction and a second clip portion 10' which vertically moves in the first clip portion 10 ' A third clip portion 30 'extending vertically to the second clip portion 20' and a fourth clip portion 40 'extending vertically from the third clip portion 30' A fifth clip portion 50 'extending vertically and a sixth clip portion 60' extending vertically.

Therefore, a concrete density between the outer plate 111 and the inner plate 112, which is the space 15 enclosed by the outer plate 111 and the inner plate 112 of the bottom plate member 10, The outer plate 111 and the inner plate 112 may be formed to have a certain shape or size. However, according to the existing regulations, it is preferable that the structure made of concrete only has 40% It is possible to provide a member for an evacuation structure of a high-rise building with a minimum area that is smaller than that of the high-rise building.

In addition, the bottom plate member 10 may be made of a metal such as iron, and a through hole 20 through which a person can pass may be formed on one side or the other side. Inside the through hole 20, A refuge including the folding ladder 36 is disposed.

The bottom plate concrete layer is a concrete layer laid on the bottom plate reinforcing bars 11 and 12 in the accommodation space 15. [

A finish layer may be formed on the top of the bottom plate member 10 according to the present invention.

The finish layer may be of various types, and in particular, the finish layer may be made of any one of tiles, terrazzo, and slabs so that the appearance of the bottom plate member becomes clear.

It is possible to provide a plurality of reinforcing structures for reinforcing the bottom plate member 10 of the high rise building of the present invention between the outer plates 111 of the bottom plate member 10 and between the outer plate 111 and the inner plate 112 It is preferable that flat plate type reinforcing members (not shown) are provided at regular intervals.

The plurality of reinforcing members may be formed to extend longitudinally from the front side of the bottom plate member 10 in the rearward direction by a predetermined length.

The reinforcing member may include a vertical reinforcing plate and a horizontal reinforcing plate extending horizontally at an upper end or a lower end of the vertical reinforcing plate.

The lower portion of the vertical reinforcing plate may be in contact with the upper surface of the bottom plate of the bottom plate member 10, but a mortar layer or a concrete layer constituting the bottom layer may flow into the lower portion of the vertical reinforcing plate, In order to further reinforce the bottom plate member 10 for a high-rise building according to the present invention, the lower portion of the vertical reinforcement plate may be spaced apart from the bottom plate by a predetermined height .

Further, in order that the reinforcing member can reinforce the bottom plate member 10 of the high-rise building of the present invention at a higher efficiency, either or both of the vertical reinforcing plate and the horizontal reinforcing plate may be formed, It is preferable that pores that can be filled with the mortar layer or the concrete layer are formed at regular intervals in the front-rear direction of the reinforcing member.

Next, cracks may be generated in the mortar layer or concrete layer constituting the bottom layer due to thermal expansion and thermal contraction according to the temperature outside the bottom plate member 10 of the high-rise building of the present invention, or a gap may be formed between the body and the bottom layer The upper side inner side surface of the outer side plate 111 of the bottom plate member 10 and the upper side inner side surface of the inner side plate 112 of the bottom plate member 10 are positioned on the upper side of the reinforcing member 10, And a crack prevention plate having pores formed on the outer surface thereof may be integrally formed.

The mortar layer or the concrete layer constituting the bottom layer may be filled and filled in the perforations of the crack prevention plate, so that cracks may be generated in the mortar layer or the concrete layer constituting the bottom layer, 10 and the bottom layer can be prevented with a higher efficiency.

Next, in order to prevent cracks from occurring in the mortar layer or the concrete layer constituting the bottom layer or to prevent a gap from being generated between the bottom plate member 10 and the bottom layer, the reinforcing member A reinforcing mesh plate made of a metal material or the like may be horizontally provided on the upper portion.

The bottom layer, which may be a mortar layer or a concrete layer, is placed in the receiving space 15 of the bottom plate member 10 in a state where the reinforcing mesh plate is horizontally disposed on the upper surface of the crack preventing plate or the reinforcing member And the reinforcing member and the reinforcing mesh plate are not exposed to the outside due to the laid floor.

In an embodiment of the present invention, the metal wire mesh and the long fiber reinforced thermoplastics formed integrally with the second bottom plate reinforcing bars 12 intersecting with the plurality of first bottom plate reinforcing bars 11 may be superimposed .

Therefore, even if the present invention has a smaller margin margin than the bottom plate member 10 which is formed only of concrete or a wire net, the durability of the base plate is satisfied, so that the bottom plate reinforcing bars 11 and 12 Stable in compliance with standards.

The metal material of the metal wire mesh may include at least one selected from the group consisting of carbon steel, stainless steel (SUS), reinforcing materials used in general construction, and combinations thereof, but is not limited thereto.

 Since the mechanical strength and the resistance vary depending on the type of the metal material of the metal wire mesh, it can be appropriately selected in accordance with the physical properties of the desired formwork.

 The metal wire forming the metal wire mesh may further be coated with a metal, an alloy or a resin. For example, the metal wire may additionally be coated with a metal selected from the group consisting of brass, zinc, cadmium, aluminum, and the like, or an alloy containing at least one of these metals.

The long fiber-reinforced thermoplastics can be produced by, for example, a long fiber thermoplastic-directing (LFT-D) method. Specifically, a pellet type thermoplastic resin and an additive are mixed in a primary extruder and transferred to a secondary extruder. In the secondary extruder, a reinforcing material is injected and extruded to produce a strand type intermediate material.

The intermediate material may be molded into a press to produce the long fiber-reinforced thermoplastics in a desired structure and shape, for example, in the form of a sheet.

The thermoplastic resin may be, for example, polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyamide (PA), polyacrylonitrile-butadiene- (ABS), polycarbonate (PC) -ABS alloy resin, and combinations thereof.

The fiber-reinforced layer used in the present invention may comprise from about 50 to about 90 weight percent thermoplastic resin and from about 10 to about 50 weight percent fiber.

 When the fiber content is less than about 10% by weight, there is a possibility that the continuous fiber reinforced composite material may not be realized. If the fiber content is more than about 50% by weight, the content of the fiber increases, And post-processing may be difficult, and maintaining the above range is advantageous in that the physical properties of the continuous fiber-reinforced composite material can be secured and the efficiency of the manufacturing process can be enhanced.

The thermoplastic resin may be an aromatic vinyl resin, a rubber modified aromatic vinyl resin, a polyphenylene ether resin, a polycarbonate resin, a polyester resin, a methacrylate resin, a polyarylene sulfide resin, a polyamide resin , A polyvinyl chloride resin, a polyolefin resin, and a combination thereof. Specifically, the polyolefin-based resin may be a polypropylene resin, and the polypropylene resin may be a propylene homopolymer or an ethylene-propylene polymer.

The steel wire mesh according to the present invention is a sheet made of cold-rolled or drawn high-strength reinforcing bars arranged at right angles to a vertical line and a horizontal line, and the intersections are joined by electric resistance welding. High flexural strength and elongation can be ensured by including in the composite material a reinforcing material that enters mainly into concrete, road pavement, building load, or the steel wire mesh.

The expanded metal according to the present invention is a reinforcing material which is made of a thin hot-rolled steel sheet or a coil as a raw material and is reduced at regular intervals and pulled up in a right angle direction to form a net shape. By including the expanded metal in the composite material, High flexural strength and elongation can be ensured.

As shown in Tables 1 and 2, Examples 1 to 8 of the present invention show that a low viscosity thermoplastic resin masterbatch composition impregnated with polyamide-based, polycarbonate-based or PET-based matrix resin and long glass, The long glass fiber reinforced resin composite prepared by compounding the composition with the contents of Table 1 as described above was prepared by mixing short glass fibers having a length of 5 to 20 mm in a significantly larger amount as compared with Comparative Example 1 or 2 in which short glass fibers were directly compounded with a high viscosity thermoplastic matrix resin It can be confirmed that it contains a lot of. As a result, Examples 1 to 7 show that the impact strength is remarkably improved as compared with the Comparative Examples, and that the overall mechanical properties including tensile strength, flexural strength and flexural modulus measured according to ASTM D790 standards are excellent have.

As shown in Table 3, the resin compositions (Examples 1 to 3) filled with the long fibers in comparison with the resin compositions (Comparative Examples 1 to 3) filled with short fibers in the case of containing the same amount of the polycarbonate resin, It can be seen that both the impact strength and the flexural strength are much improved.

Also, in the resin composition filled with long fibers, the impact strength and flexural strength were increased as the filled long fiber content increased (Example 1? Example 3). The frequency of stress repetition in fatigue failure increased with increasing the amount of long fiber.

On the other hand, the resin composition of Comparative Example 4 produced by the simple extrusion method without preparing the master-batch in the components and compositions of Example 2 had poor resin impregnability of the long fibers, It shows falling property.

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Therefore, the case forming the through-hole 20 can be easily fixed, and the stability of the operation can be ensured.

4 to 6, the bottom plate member 10 may be made of a metal such as iron, and a through hole 20 through which a person can pass may be formed on one side or the other side. And the evacuation device including the folding type ladder 36 is disposed inside the through-hole 20.

The hinge 211 may be provided on the upper portion of the through hole 20 so as to cover the cover 21 or 22 for opening or closing the through hole 20.

The rear side of the covers 21 and 22 is vertically moved in a state where the front lower portion of the covers 21 and 22 is axially coupled to the upper portion of the bottom plate member 10 in the vicinity of the upper front side of the through- So that the through-hole 20 can be opened and closed.

The upper cover 21 and the lower cover 22 and the cover 21 and 22 for opening and closing the upper and lower openings, And the lower cover 22 exposed to the lower veranda is opened at the same time when the upper cover 21 exposed to the upper floor veranda is opened in case of emergency such as a fire or the like, And the folding type ladder 36 disposed thereon is deployed.

The through-hole 20 further includes a pair of hinges for connecting the upper side cover and the lower side cover to open into the space in which the evacuation device protecting the ladder is disposed.

5, as one embodiment of the present invention, one hinge connecting to one side of the upper cover 21 in a state in which the upper cover 21 is open is a fixed folding structure in the form of a boomerang, The hinge is a folding structure that is bent in a straight shape.

Therefore, when the upper cover 21 is closed, the hinge of one side is easily folded without applying any force because the fixed folding structure of the boomerang type is already curved, and the hinge of the other side is quickly folded So that the elderly person or the child can quickly and safely open and close the upper cover 21.

A method for manufacturing a building-integrated fire escape structure using a cantilever system according to an embodiment of the present invention will be described.

As shown in FIG. 1, the general through-hole is designed so that the through-hole in the immediately lower layer is closed to facilitate escape through the folding-type ladder.

Therefore, for convenience of manufacture, the through-hole may be formed to be formed only at one end.

That is, the through-holes are formed in different side ends before the concrete is poured. In this case, a through-hole is formed in only one end of the bottom plate member, The product can be used immediately by forming it on the side end different from the upper layer.

10:
11, 12: Reinforced bottom plate
15: accommodation space
20: Through hole
34: the railing
35: Alarm device
36: Folding ladder

Claims (8)

delete delete (S1) of preparing a bottom plate member having a through hole through which the reinforcing bar penetrates, and an upper side of which is formed with a through hole at one end of the bottom plate member for pouring concrete;
(S2) joining the bottom plate member so as to extend horizontally on the wall surface of the high-rise building;
A step (S3) of inserting and arranging a bottom plate reinforcing bar in a grid shape extending from a reinforcing bar on a wall surface in a receiving space formed inside the bottom plate member;
(S4) fixing the bottom plate reinforcing bars arranged in a lattice shape by spot welding;
(S5) forming a metal wire mesh or a long fiber-reinforced thermoplastic resin on the bottom plate reinforcing bar so as to be overlapped on the top or bottom;
A step (S6) of placing a bottom plate concrete layer in the accommodation space;
And a step (S7) of installing an evacuation device composed of an upper cover, a lower cover, and a folding type ladder disposed in an inner space of the upper cover and the lower cover, in the through hole after curing of the concrete layer
(S1) to (S7) so that the bottom plate member is rotated 180 degrees so that the through-hole is formed at the side end different from the upper layer, Lt; / RTI >
The long fiber-reinforced thermoplastic resin may be an aromatic vinyl resin, a rubber modified aromatic vinyl resin, a polyphenylene ether resin, a polycarbonate resin, a polyester resin, a methacrylate resin, a polyarylene sulfide resin, a poly Amide resins, polyvinyl chloride resins, and polyolefin resins .
The through-hole further includes a pair of hinges for connecting the upper cover and the lower cover to open into the space in which the evacuation device for protecting the ladder is disposed. When the upper cover is opened, Wherein the hinge connected to the hinge is a fixed folding structure of a boomerang type and the hinge of the other side is a folding structure of a bent type. delete delete delete delete delete

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