KR101463071B1 - Modular unit floor and Modular unit using the same - Google Patents

Abstract

The present invention relates to a modular bottom plate and a modular unit using the modular bottom plate, the deck plate having a trapezoidal cavity portion opened downward and having a plurality of hook portions on a surface forming a cavity portion; A concrete slab placed on the deck plate; A first cushioning material disposed on the concrete slab; A lightweight foamed concrete pushed in close contact with an upper portion of the first cushioning material; A mortar finish on top of the lightweight foamed concrete; And a deck plate, a concrete slab, a first cushioning material, a lightweight foamed concrete, and a c channel-shaped long side beam fixed in a form of wrapping both sides of the long side of the layered structure made of mortar finish. do.
According to the present invention, by using a hollow concrete slab and a rubber cushioning material, the weight of a concrete slab bottom plate, which is a conventional standard floor slab, is reduced in weight and an impact sound blocking performance is excellent.

Description

[0001] The present invention relates to a lightweight modular floor panel and a modular unit using the modular floor panel.

The present invention relates to a lightweight modular floor panel and a modular unit using the same. More particularly, the present invention relates to a lightweight modular floor panel in which a weight of a concrete slab bottom plate, which is a conventional standard floor panel, is reduced by using hollow concrete slabs and rubber- And a modular unit using the same.

Conventional apartment house standard floor slabs have a concrete slab thickness of 150mm ~ 210mm, but the modular unit construction method that is built in the factory and assembled in the field is important in transportation and on-site assembly work. .

For example, FIG. 1 shows a standard floor structure for a house.

As shown in the drawing, the standard floor structure of a conventional apartment house has a structure in which a concrete slab is maintained at least 150 mm or more, and the structure of the heat insulating material, the lightweight foamed concrete, the finishing mortar, It has been difficult to apply it to the field assembly type modular unit construction method which is being actively developed recently.

In other words, since the modular unit construction method is a method in which the modular unit manufactured at the factory is transported to the site and assembled in the field, it causes many difficulties in transportation and assembly when having a high load such as the standard floor structure of a conventional apartment house.

In order to overcome such disadvantages, Patent No. 1128446 has been disclosed.

However, although the above-mentioned patent has achieved a great achievement in terms of weight reduction, it has been found that the impact sound specified in the 'Building Housing Standard for Building Impact Noise Block Structure and Management Standard & Management Standard (Ministry of Land, Transport and Maritime Affairs Notice No. 2008-538) The blocking performance is very poor and the problem is not satisfied.

That is, the registered patent is a technology that is reinforced only in terms of weight reduction and structural stability, and is a technology requiring structural supplement to satisfy the impact sound blocking performance.

Korean Unexamined Patent Application Publication No. 2010-0039607 Nov. 16, 2010.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned limitations of the prior art, and it is an object of the present invention to provide a concrete slab, which is made by using a hollow slab to reduce the weight of a concrete slab, And a modular unit manufactured using a factory-manufactured lightweight dry flooring and a bottom plate thereof.

The present invention provides a deck plate which is bent to have a trapezoidal cavity portion opened downward and has a plurality of hook portions on a surface forming a cavity portion, A concrete slab placed on the deck plate; A first cushioning material disposed on the concrete slab; A lightweight foamed concrete pushed in close contact with an upper portion of the first cushioning material; A mortar finish on top of the lightweight foamed concrete; And a deck plate, a concrete slab, a first cushioning material, a lightweight foamed concrete, and a c channel-shaped long side beam fixed in a form of wrapping both sides of the long side of the layered structure made of mortar finish. do.

At this time, a plurality of arcuate projections protrude from the bottom surface of the first cushioning material to form a gap between the upper surface of the concrete slab and the upper surface of the concrete slab.

The concrete slab cushioning material is also interposed between the long-side beam and the concrete slab.

The long side of the deck plate is bent to be inserted into the long side beam, and is then seated on the upper surface of the concrete slab cushioning material so that the long side The lower end of the beam and the lower end of the deck plate are flush with each other, and the deck plate, the concrete slab, and the first cushioning material end side are provided with an interval from the long side beam, and the lightweight foamed concrete is filled There are also features.

The bolt head of the bolt inserted into the bolt hole of the long side beam is completely inserted so as not to protrude outside the long side side beam.

Furthermore, the open bottom of the cavity is also sealed by a plate-shaped separate deck plate.

The present invention relates to a deck plate which is bent to have a trapezoidal cavity portion and has a plurality of hook portions on a surface forming a cavity portion; A concrete slab placed on the deck plate; A first cushioning material disposed on the concrete slab; A second buffer material closely attached to the upper portion of the first buffer material; A third buffer material seated on the upper surface of the second buffer material; A mortar finish on top of the third cushioning material; The deck plate, the concrete slab, and the first, second, and third cushioning materials are fixed on the long side of the layered structure.

In this case, the third cushioning material is also characterized by having a plurality of holes so as to form a core bar in which the mortar finish is filled to strengthen the binding force.

The present invention also provides a deck plate which is bent so as to have a trapezoidal cavity portion and has a plurality of hook portions on the surface forming the cavity portion; A concrete slab placed on the deck plate; A first cushioning material disposed on the concrete slab; A second buffer material closely attached to the upper portion of the first buffer material; A third buffer material seated on the upper surface of the second buffer material; A deck plate, a concrete slab, and a c-channel type long side beam fixed in a form of wrapping both sides of the long side of the layered structure made of the first, second and third cushioning materials; And a mortar finish that is seated on the third cushioning material and the upper side of the long side beam in a preformed state.

In addition, the present invention provides a deck plate which is bent to have a trapezoidal cavity and has a plurality of hooks on a surface forming a cavity, A concrete slab placed on the deck plate; A first cushioning material disposed on the concrete slab; A lightweight foamed concrete pushed in close contact with an upper portion of the first cushioning material; The deck plate, the concrete slab, the first cushioning material, and the c channel type long side beams fixed in the form of wrapping both sides of the long side of the layered structure made of lightweight foamed concrete; And a mortar finish which is seated on the lightweight foamed concrete and the upper side of the long side beam in a preformed state.

In this case, the mortar finish is also fastened and fixed to the upper end of the long side beam through the mortar fin.

The present invention also provides a deck plate which is bent to have a trapezoidal-shaped cavity portion opened downward and has a plurality of hook portions on the surface forming the cavity portion; A concrete slab placed on the deck plate; A mortar finish over the concrete slab; And a deck plate, a concrete slab, and a d channel type long side girder which is fixed in the form of wrapping both sides of the long side of the layered structure made of mortar finishing.

In addition, in the present invention, a nut is embedded and fixed in the concrete slab, a bolt fastened to the nut is inserted into the long side beam, a bolt fixing part is welded and fixed to the inner side surface of the long side beam, Wherein the long side of the deck plate and the concrete slab is installed at an interval from the long side beam and the mortar finish is filled between the long side sides of the deck plate and the concrete slab. to provide.

Further, the present invention provides a modular unit using a modular bottom plate, wherein the modular bottom plate is fixed to a column, a long side frame, and a short side frame, respectively.

The present invention also relates to a deck plate having an omega-shaped cavity portion; A concrete slab placed on the deck plate; A first cushioning material disposed on the concrete slab; A lightweight foamed concrete pushed in close contact with an upper portion of the first cushioning material; A mortar finish on top of the lightweight foamed concrete; And a deck plate, a concrete slab, a first cushioning material, a lightweight foamed concrete, and a d channel-shaped long side girder which is fixed in the form of wrapping both sides of the long side of the layered structure made of mortar finishing .

In addition, the present invention relates to a deck plate having an omega-shaped cavity portion; A concrete slab placed on the deck plate; A first cushioning material disposed on the concrete slab; A second buffer material closely attached to the upper portion of the first buffer material; A third buffer material seated on the upper surface of the second buffer material; A mortar finish on top of the third cushioning material; The deck plate, the concrete slab, and the first, second, and third cushioning materials are fixed on the long side of the layered structure.

In addition, the present invention relates to a plate type deck plate; A concrete slab placed in the upper part of the deck plate with a hollow without a hollow; A first cushioning material disposed on the concrete slab; A lightweight foamed concrete pushed in close contact with an upper portion of the first cushioning material; A mortar finish on top of the lightweight foamed concrete; And a deck plate, a concrete slab, a first cushioning material, a lightweight foamed concrete, and a d channel-shaped long side girder which is fixed in the form of wrapping both sides of the long side of the layered structure made of mortar finishing .

Further, the present invention provides a plate deck plate, A concrete slab placed in the upper part of the deck plate with a hollow without a hollow; A first cushioning material disposed on the concrete slab; A second buffer material closely attached to the upper portion of the first buffer material; A third buffer material seated on the upper surface of the second buffer material; A mortar finish on top of the third cushioning material; The deck plate, the concrete slab, and the first, second, and third cushioning materials are fixed on the long side of the layered structure.

According to the present invention, by using a hollow concrete slab and a rubber cushioning material, the weight of a concrete slab bottom plate, which is a conventional standard floor slab, is reduced in weight and an impact sound blocking performance is excellent.

In addition, by reducing the weight of the modular bottom plate, it is possible to reduce the module transportation cost, and it is possible to obtain the effect of facilitating both work and work in the field assembly.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exemplary cross-sectional view of a conventional floor structure according to the prior art.
2 and 3 are exemplary longitudinal sectional views of a concrete floor constituting a modular bottom plate according to the present invention.
4 is an exemplary perspective view showing a deck plate of a concrete floor constituting a modular deck according to the present invention.
FIG. 5 is an exemplary longitudinal sectional view showing an example of fixing a concrete floor to form a modular bottom plate according to the present invention.
FIG. 6 is an enlarged view of the fastening portion of FIG. 5; FIG.
Figures 7 to 18 are exemplary partial longitudinal sectional views of various embodiments of a modular floor according to the present invention.
19 to 20 are views illustrating an example of configuring a modular unit using a modular bottom plate according to the present invention.
21 to 26 are exemplary partial longitudinal sectional views showing another embodiment of a modular bottom plate according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The modular bottom plate according to the present invention has a structure in which a concrete floor (deck plate + concrete slab), a cushioning material and a mortar finish are sequentially layered, and the basic structure is a modification thereof.

In addition, in the case of a modular floor plate in a building that does not require impact sound blocking performance, that is, in the case of a modular floor plate rather than a dwelling house, the cushioning material may not be provided.

First, the concrete floor as a basis of the present invention will be described.

2, the concrete floor according to the present invention comprises a deck plate 100 and a concrete slab 200.

At this time, the concrete floor according to the present invention is also provided with the cavity disclosed in the above-mentioned Japanese Patent No. 1128446 described in the prior art.

However, the patent No. 1128446 prevents rising due to buoyancy when the concrete is poured, and takes a reverse trapezoidal shape of the cavity portion for stable engagement, causing problems such as rupture and cracking due to the pressing force applied on the side of the cavity portion. There is a disadvantage in that the durability is deteriorated because of the structural stability.

2, in order to assist the impact sound blocking structure in consideration of the above points, the present invention is characterized in that the shape of the cavity portion 300 is formed as an exact trapezoid, and a plurality of hook portions (not shown) are formed along the circumferential surface of the cavity portion 300 310 to strengthen the bonding force with the concrete slab 200 to solve all of the problems pointed out by the prior art and to solve the problem of durability deterioration due to the local downward force of the prior art .

In this case, the cavity portion 300 and the hook portion 310 are formed by bending the deck plate 100 as shown in FIG.

In order to improve durability, the lattice 220 for fixing the cast iron 210, the reinforcing steel bar 230, and the like, which are provided in the concrete slab 200, are constructed in the same manner as disclosed in the prior art No. 1128446.

In addition, the bottom of the cavity 300 is closed by another deck plate 100.

3 illustrates another embodiment of maintaining the cavity 300 in an open state, wherein a separate deck plate 100 is formed in the same manner as the deck plate forming the cavity 300, .

As shown in FIG. 4, the piping pipe 320 is piped across the deck plate 100 in the bending direction, so that the wiring for electricity and communication can be disposed through the pipe.

5 and 6 illustrate a modular bottom plate having a structure in which the concrete floor structure is maintained and mortar finishing is performed on the floor, and as described above, it is used in a building in which it is not necessary to provide impact sound blocking performance .

5 and 6, a mortar finish 400, which is a finishing material, is layered on a concrete floor, that is, a concrete floor composed of a deck plate 100 and a concrete slab 200.

In this case, as described above, there is a structure in which no buffer material is provided between the concrete slab 200 and the mortar finish 400. A circle formed at intervals in the longitudinal direction refers to the pipe pipe 320, (300, see Fig. 2) is cut off and is seen as a longitudinal section.

In this case, the finishing structure is constructed by placing a pre-fabricated concrete floor (deck plate + concrete slab) on a long side beam 410 having a C channel shape, and bolts 430 Is fastened to the nut 450, the long side beam 410 can be easily fastened to the concrete floor.

In this state, the mortar is installed to integrate the bolt fastening portion and the concrete slab portion 200 into the mortar finish 400.

Here, the nut 450 is installed in advance to be embedded in the concrete slab 200. For example, the nut 450 may be welded between the reinforcing bars 440 to be embedded.

In addition, a bolt fixing part 460 is previously welded to the inside of the bolt hole 420, that is, the inner surface of the long side bolt 410. When the bolt 430 is fastened, So that the bolts 430 do not protrude outward from the long side beam 410, so that there is no risk of interference and workability is improved.

In another example, FIG. 7 shows a modular floor panel having an impact sound blocking performance according to an embodiment of the present invention, which is modified on the basis of a layered structure of a concrete floor, a cushioning material, and a mortar finish.

7, a modular bottom plate according to an embodiment of the present invention includes a deck plate 100, a concrete slab 200 laid on the deck plate 100, a slab 200 mounted on the concrete slab 200, Lightweight foamed concrete 600 laid on the first cushioning material 500 and a mortar finish 400 finished on the lightweight foamed concrete 600. The masonry foamed concrete 600 has a layer structure of a cushioning material 500,

At this time, a pipe pipe 320 may be embedded in the concrete slab 200.

The first cushioning material 500 is made of a rubber material and has an arc-shaped projection 510 for alleviating an impact sound by having a structure that is excited by preventing slippage and space from being in contact with the concrete slab 200 as a bottom surface, May be formed.

A channel length type long side beam 410 is coupled to a long side of the concrete slab 200 including the deck plate 100. In the case of FIG. 7, a shear stud S ). ≪ / RTI >

In this case, the concrete slab cushioning material 470 made of rubber may be interposed between the long side beam 410 and the concrete slab 200, unlike the conventional case.

The long side of the deck plate 100 must be bent in accordance with the shape of the concrete slab cushioning material 470 so that the impact sound transmitted to the concrete slab 200 and the deck plate 100 is transmitted to the long side beams 410 The concrete slab cushioning material 470 is rapidly attenuated by the concrete slab cushioning material 470 and is effective for reducing impact sound.

In addition, the long side beam 410 is installed to cover the first cushioning material 500, the lightweight foamed concrete 600, and the mortar finish 400 described above.

Fig. 8 is another embodiment of the modular floor slab according to the present invention. The laminated structure is the same as the embodiment of Fig. 7, but the installation structure of the long side girder 410 is different.

The long side beam 410 according to the embodiment of FIG. 8 has the same structure as that of FIGS. 5 and 6 described above, and the bolted portion is completely embedded by the lightweight foamed concrete 600.

FIG. 9 is a schematic view of a modular floor according to another embodiment of the present invention. FIG. 9 is a schematic view illustrating a deck plate 100, a concrete slab 200 placed on the deck plate 100, A second cushioning material 700 adhered on the first cushioning material 500 and a third cushioning material 800 placed on the second cushioning material 700 and having a plurality of holes 810 And a layered structure of a mortar finish 400 cast on the third cushioning material 800.

In this case, the second and third cushioning materials 700 and 800 are made of a rubber material. In particular, in the case of the third cushioning material 800, a plurality of holes 810 are formed as shown in FIG. 10, 400 penetrate through the hole 810 to the upper surface of the second cushioning material 700 so that the third cushioning material 800 is coupled like the core material.

In addition, arc-shaped protrusions 510 protrude from the bottom surface of the first buffer material 500.

7 is a sectional view of the long side beam 410 and the concrete slab 200. The long side beam 410 and the concrete slab 200 are coupled to each other, The concrete slab cushioning material 470 is installed in the same structure as the concrete slab cushioning material 470 interposed therebetween.

11 shows another embodiment of the modular deck according to the present invention, in which the layered structure is the same as the layered structure described in Fig. 9, except that the third cushioning material 800 is formed in the form of a hole- Except that a mortar fin pin (P), which is fixed to the long side beam (410) by bolts to fix the mortar finishing (400) to the long side beam (410) Only.

12 is a schematic view of a modular floor according to another embodiment of the present invention in which a concrete slab 200 is placed on a deck plate 100 and a first The lightweight foamed concrete 600 is placed on the first cushioning material 500 and the long side beam 410 is fixed through the concrete slab cushioning material 470 in this state and the long side beams 410 And the mortar fin 400 is mounted on the lightweight foamed concrete 600 and then fixed to the long side beam 410 by the mortar finish pin P. [

13, the layered structure is the same as that of FIG. 12 except that the mortar finish 400 is not fixed to the long side beam 410 and is seated on the top, and the concrete slab cushioning material The long side of the deck plate 100 coupled with the long side beam 410 is sandwiched by the long side beam 410 without being bent.

14 shows another embodiment of the modular bottom plate according to the present invention, which has the same structure as that of FIG. 13 except that an arc-shaped protrusion 510 is further formed on the lower end surface of the first cushion material 500.

15 is a schematic view of a modular bottom plate according to another embodiment of the present invention. As shown in FIG. 15, the long side portion 410 and the deck plate 100 have the same structure as that of FIG. The first, second, and third cushioning materials 500, 700, and 800 are sequentially stacked on the concrete slab 200 in the structure.

16 is a modification of the modular floor according to another embodiment of the present invention, which has the same structure as that of FIG. 15 except that an arc-shaped protrusion 510 is further formed on the lower surface of the first cushion material 500.

17, the concrete slab cushioning material 470 is absent and the long side of the deck plate 100 is warped and deformed. Except that the lower end of the long side beam 410 and the lower end of the deck plate 100 are located on the same plane.

18, the long side of the deck plate 100 coupled with the long side beam 410 under the interposition of the concrete slab cushioning material 470 has the same structure as that of FIG. But is configured to be fitted in the long side beam 410 without being bent.

The modular bottom plate having the above-described structure has an appearance as shown in Fig. 19, and Fig. 19 exemplarily illustrates the structure of Fig. 9 among the above-mentioned structures.

19, the long side of the modular bottom plate is provided with a long side beam 410, the top surface thereof is provided with a mortar finish 400, the bottom plate fixing bolt B is buried in a cross- Respectively.

20, when the long side and the short side of the modular bottom plate are respectively assembled and fastened to the long side frame Fr and the short side frame Fs, the modular unit M is finally completed.

21 to 23, a concrete slab 200 'is installed in a deck plate 100' having an Omega type cavity as disclosed in the prior art No. 1128446, The layered structure to be laminated thereon may have a structure combined with the layered structure described in Figs. 13, 15 and 9, respectively.

That is, one of the characteristics of the present invention is to use a deck plate having an omega-shaped cavity, which is known in the prior art, to make another modular deck of a new type by incorporating a layered structure that implements sound insulation performance.

Of course, since this is based on the above-mentioned registered patent, it can be said that the structure is used as it is. However, since only the deck plate 100 'and the cone-shaped slab 200' structure are shown as the lower structure, the layered structure for the sound insulation performance is not shown, It is an unpredictable part of the effect, so it can be regarded as an invention that has made technological progress sufficiently regardless of the existence of the registered patent.

In another embodiment, in Figs. 24-26, a deck plate 100 "and a concrete slab 200" laid thereon, which is a conventional substructure of the art, The layered structure for achieving the sound insulation performance according to the present invention may be applied to the upper portion of the slat-like structure.

In this case as well, the layered structure described in Figs. 13, 15, and 9 described above can be bonded as it is.

Thus, the present invention can achieve the desired sound insulation performance even in a conventional modular bottom plate structure.

However, it is possible to considerably reduce the thickness of the concrete slab 200 'in consideration of the thickness side. This is possible because a separate layered structure realizing the sound insulation performance is realized according to the present invention.

100: Deck plate 200: Concrete slab
300: Cavity part 400: mortar finish
500: First cushioning material 600: Lightweight foamed concrete
700: second buffer material 800: third buffer material

Claims (15)

Deck plate;
A concrete slab placed on an upper portion of the deck plate;
A first cushioning material disposed on the concrete slab;
A lightweight foamed concrete pushed in close contact with an upper portion of the first cushioning material;
A mortar finish on top of the lightweight foamed concrete; And
Channel type long-side beams fixed in a form to cover both sides of the long side of the deck plate, the concrete slab, the first cushioning material, the lightweight foamed concrete, and the mortar finish layered structure,
A concrete slab cushion material is interposed between the long side beam and the concrete slab,
Wherein a long side of the deck plate wrapped by the long side beam is bent and inserted into a long side beam and then seated on a top surface of a concrete slab damping material so that the lower end of the long side beam and the bottom end of the deck plate are flush with each other. Deck plate;
A concrete slab placed on an upper portion of the deck plate;
A first cushioning material disposed on the concrete slab;
A lightweight foamed concrete pushed in close contact with an upper portion of the first cushioning material;
The deck plate, the concrete slab, the first cushioning material, and the c channel type long side beams fixed in the form of wrapping both sides of the long side of the layered structure made of lightweight foamed concrete; And
And a mortar finish which is seated on the lightweight foamed concrete and the upper side of the long side beam in a preformed state,
A concrete slab cushion material is interposed between the long side beam and the concrete slab,
Wherein a long side of the deck plate wrapped by the long side beam is bent and inserted into a long side beam and then seated on a top surface of a concrete slab damping material so that the lower end of the long side beam and the bottom end of the deck plate are flush with each other. The method according to claim 1,
Wherein the deck plate has a hollow portion with an open bottom,
Wherein the modular deck further comprises a plate-shaped sealing deck plate for sealing the open bottom of the cavity. The method according to claim 1 or 2,
Wherein the long side of the deck plate, the concrete slab, and the first cushioning material is provided at an interval from the long side beam, and the lightweight foamed concrete is filled between the intervals. Deck plate;
A concrete slab placed on an upper portion of the deck plate;
A first cushioning material disposed on the concrete slab;
A second buffer material closely attached to the upper portion of the first buffer material;
A third buffer material seated on the upper surface of the second buffer material;
A mortar finish poured on top of the third cushioning material; And
Channel type long side beams fixed in a form to wrap both sides of the long side of the layered structure composed of the deck plate, the concrete slab, and the first, second and third cushioning materials,
A concrete slab cushion material is interposed between the long side beam and the concrete slab,
Wherein a long side of the deck plate wrapped by the long side beam is bent and inserted into a long side beam and then seated on a top surface of a concrete slab damping material so that the lower end of the long side beam and the bottom end of the deck plate are flush with each other. Deck plate;
A concrete slab placed on an upper portion of the deck plate;
A first cushioning material disposed on the concrete slab;
A second buffer material closely attached to the upper portion of the first buffer material;
A third buffer material seated on the upper surface of the second buffer material;
A deck plate, a concrete slab, and a c-channel type long side beam fixed in a form of wrapping both sides of the long side of the layered structure made of the first, second and third cushioning materials; And
A third cushioning material, and a mortar finish paved on top of the long side beam,
A concrete slab cushion material is interposed between the long side beam and the concrete slab,
Wherein a long side of the deck plate wrapped by the long side beam is bent and inserted into a long side beam and then seated on a top surface of a concrete slab damping material so that the lower end of the long side beam and the bottom end of the deck plate are flush with each other. The method according to any one of claims 1, 2, 5 and 6,
Wherein a plurality of arc-shaped projections protrude from the bottom surface of the first cushioning material to form a gap between the upper surface of the concrete slab and the upper surface of the concrete slab. The method according to claim 5 or 6,
Wherein the third cushioning material has a plurality of holes to form a core bar that is filled with the mortar finish to strengthen the binding force. 5. The method according to any one of claims 1, 2,
Wherein a nut is embedded and fixed to the concrete slab, and a bolt fastened to the nut is inserted into the long side beam. delete The method of claim 1,
Wherein the bolt head of the bolt inserted into the bolt hole of the long side beam is completely inserted so as not to protrude outside the long side side beam. 5. The method according to any one of claims 1, 2,
Wherein the deck plate has a hollow portion having an omega shape or a trapezoidal shape in cross section when the deck plate is cut along the direction parallel to the long side beam. 5. The method according to any one of claims 1, 2,
The deck plate is plate-
Wherein the concrete slab is poured into the top of the decking plate without a hollow. The method according to claim 2 or 6,
And the mortar finish is fastened and fixed to the upper end of the long side beam via a mortar fin fin. Claims [1] A modular unit using a modular bottom plate, which is manufactured by fixing the light modular bottom plate according to any one of claims 1-3, 5, or 6 to a column, a long side frame and a short side frame.

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