KR101705336B1 - Box structure and box type modular using box structure - Google Patents

Abstract

A box module according to the present invention comprises a top plate and a bottom plate, a wall connecting the top plate and the bottom plate, And a vertical tension ball to be inserted. The box-shaped building using the box module according to the present invention includes a box module including an upper plate and a lower plate, and a wall connecting the upper plate and the lower plate; And a module assembly in which a plurality of box modules are horizontally disposed and a module assembly in which the unit layers are stacked to form a multi-layer structure, wherein a box module group arranged in the same row in the module assembly forms a plurality of vertical rows And a vertical tendon hole which is formed so as to communicate with the box module wall on a part of the vertical row and into which the stranded wire is inserted.
That is, according to the present invention, a vertical tongue hole is formed in a wall of a box module disposed on a part of a vertical column of a module assembly, a stranded wire is inserted into the vertical tongue holes and fixed to the base, A box module capable of increasing resistance to lateral force applied to a prefabricated building through earthquake or vibration, and a prefabricated building using the same.

Description

BOX STRUCTURE AND BOX TYPE MODULAR USING BOX STRUCTURE [0001]

The present invention relates to a module assembly formed by stacking box modules, in which a vertical tendon hole communicating with a wall of box modules arranged on the same row in the vertical direction is formed, a stranded wire is inserted into a vertical tendon hole, To increase the vertical binding force of the module assembly, thereby increasing the resistance against the lateral force applied by the earthquake or vibration, and a prefabricated building using the box module.

Generally, a modular building is a structure made by preliminarily manufacturing a unit unit module made of a box-shaped steel structure and stacking them.

That is, the modular building can be constituted by integrally manufacturing main structural members, equipment, and storage materials in a factory and laminating them on site.

And, the unit unit of such a modular building completes the building through the bolt connection between the upper, lower and adjacent modules.

Conventional modular buildings have been used in low-rise buildings such as schools and military facilities. However, due to the development of high-strength materials and light-weight sections, the convenience of construction due to factory construction and the necessity of shortening the space, it is necessary to introduce modular buildings in high- Is emerging.

However, in the case of a high-rise building, a lateral force such as a wind load or an earthquake load becomes a main design object. In a modular building, a unit unit module mainly resists a lateral force, so that a whole building can not behave integrally.

In order to solve such a problem, a method of bolting the bottom beam and the ceiling beam facing each other at the boundary of the unit module has been used to increase the rigidity with respect to the lateral force.

However, even when the unit module units are connected to each other using the bolt joint, when a modular structure (particularly, a high-rise building) receives a lateral force such as a seismic load or a wind force, due to the vertical displacement occurring at the bolted joint, There is a problem that the usability and stability of the building deteriorate.

That is, the high-rise building as shown in FIG. 1 (a) has a modular structure constructed by stacking the unit modules (see FIG. 1 (b) c) can cause a further increase in the horizontal displacement with respect to the lateral force.

To solve such a problem, Korean Patent No. 10-1194170 (Oct. 18, 2012, hereinafter referred to as "prior art") discloses a "joining structure of modular buildings and a construction method thereof".

The joining structure of the modular building includes a core portion, a connection panel having a truss member coupled to an outer circumferential surface of the core portion and connected to the core portion, and a connection panel disposed apart from the core portion, And a bottom panel having a floor beam and a ceiling beam stacked vertically and connected to the core section through a connection with the connection panel, wherein the connection panel is a floor panel installed at a height of the floor beam of the unit module Wherein the truss member is provided as a horizontal truss in which a truss is disposed in a horizontal direction and a load is easily transmitted from the unit module to the core portion through the connection panel so as to be integrally moved with external force.

According to the related art, a modular building is formed by using the core part and the unit module is joined to the core part by using the connection panel, thereby minimizing the vertical displacement occurring at the joint part between the unit modules stacked up and down. The resistance to the lateral force of the modular building can be increased.

In the conventional art, a truss member is provided to connect the core unit and the unit module through the connection of the connection panel, and the connection panel is connected to the core unit. However, assembly of the members is complicated, There is a problem in that there are many.

In addition, in the related art, since the core unit and the unit module are connected to each other by using the connecting panel having the truss member, there are limitations in that there are many joints to solve the above-mentioned conventional problems.

Korean Patent No. 10-1194170 (Oct. 18, 2012)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

A vertical tie hole communicating with a wall of box modules arranged on the same row in the vertical direction is formed in the module assembly formed by stacking the box modules and the lower end of the strand is fixed to the base after inserting the stranded wire into the vertical tendon hole It is an object of the present invention to increase resistance force against a lateral force applied by an earthquake or vibration by increasing the vertical binding force of the module assembly.

Another object of the present invention is to integrate horizontal stiffening holes by forming horizontal stiffening holes in the box module upper plate or lower stiffening plate of each individual layer to give horizontal binding force for each individual layer.

In addition, according to the present invention, stranded wires installed in respective individual layers are arranged in a form orthogonal to each other so as to provide mutually complementary restraining forces between respective individual layers, so that resistance force can be increased regardless of the direction in which the lateral force due to earthquake or vibration is applied in any direction, And to improve the structural stability of the device.

The box module according to the present invention includes a top plate and a bottom plate, a wall connecting the top plate and the bottom plate, and a vertical tendon hole formed in the wall and vertically arranged to insert a strand.

And a horizontal tendon hole formed in the upper plate or the lower plate according to the present invention or both of them, and horizontally arranged to insert a stranded wire therein.

The horizontal tendon holes of the upper plate and the lower plate according to the present invention are arranged in parallel or orthogonally to each other.

Meanwhile, the prefabricated building using the box module according to the present invention includes a box module including an upper plate and a lower plate, and a wall connecting the upper plate and the lower plate; And a module assembly in which a plurality of box modules are horizontally disposed, and a multilayer structure in which the individual layers are stacked,

The module assembly is formed with a plurality of vertical columns in which a plurality of box modules are arranged on the same row on the upper and lower sides, and a vertical tendon which is formed to communicate with a box module wall disposed on some or all of the vertical columns, And a ball.

And a horizontal tendon hole formed in the upper plate or the lower plate of the box module according to the present invention, in which a strand for embedding the box module disposed in the individual layer is integrally inserted.

The horizontal tendon holes according to the present invention are formed on the lower plate of the box module, and the horizontal tendon holes of the box modules of the individual layers in the module assembly are arranged orthogonally.

The horizontal tendon holes of the upper plate and the lower plate of the box module according to the present invention are arranged in parallel or in a mutually orthogonal form.

The box module according to the present invention and the assembled building using the same are characterized in that a vertical tendon hole communicating with a wall of box modules arranged on the same row in the vertical direction is formed in a module assembly formed by stacking box modules, After inserting, the lower end of the strand is fixed to the base to increase the vertical binding force of the module assembly, thereby increasing the resistance to the lateral force applied by the earthquake or vibration.

In the present invention, a horizontal tendon hole is formed in the box module upper plate or the lower plate of each individual layer, and a stranded wire is provided to integrate them by imparting horizontal restraining force to each individual layer.

In addition, according to the present invention, stranded wires installed in respective individual layers are arranged in a form orthogonal to each other so as to provide mutually complementary restraining forces between respective individual layers, so that resistance force can be increased regardless of the direction in which the lateral force due to earthquake or vibration is applied in any direction, Can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a conceptual diagram showing a displacement according to a lateral force of a conventional modular building,
FIG. 2 is a conceptual diagram showing a prefabricated building according to the present invention,
3 is an exploded perspective view showing a box module according to the present invention,
4 is a perspective view showing various modified examples of the box module according to the present invention,
5 is a plan view showing a vertical tent arrangement structure according to the present invention,
6 and 7 are a plan view and a side view showing the arrangement structure of the horizontal tendons according to the present invention,
FIG. 8 is a plan view and a sectional view showing a vertical tent installation structure according to the present invention,
FIG. 9 is a side view and a cross-sectional view showing the installation structure of the horizontal tendon according to the present invention,
10 is a cross-sectional view showing a coupling portion of the box module according to the present invention,
11 and 12 are sectional views showing still another modification of the box module coupling portion according to the present invention.

The above-described box module according to the present invention and a prefabricated building using the same will be described in detail with reference to the accompanying drawings.

Referring first to Figure 6, which is an unambiguous orientation reference used herein,

6, the transverse direction is referred to as the 'x' direction, and the longitudinal direction on the sheet of FIG. 6 as the 'y' direction.

As shown in FIGS. 2 to 4, 8 and 9, the box module 10 of the present invention includes:

And a wall unit 13 connecting the upper plate 11 and the lower plate 12 to each other and connecting the upper plate 11 and the lower plate 12 to each other.

That is, the box module 10 according to the present invention is formed in a hexahedron, the upper plate 11 of the box module 10 serves as a ceiling, the lower plate 12 serves as a floor, 10).

The wall 13 of the box module 10 is formed with vertical tent holes 14 in the vertical direction and the strand 20 is installed in the vertical direction through the vertical tent hole 14. [

Next, the upper plate 11 or the lower plate 12 of the box module 10, or both of them, are provided with a horizontal tension hole 15 in the horizontal direction, and the strand 20 is horizontally Respectively.

The box module 10 configured as described above is formed in a standardized form. When the box module 10 thus shaped is stacked up and down, a prefabricated building is built.

4, the box module 10 has a single-sided opening type (Fig. 4 (a)) in which one side wall 13 is opened out of the side walls 13, (See Fig. 4 (b)) and both-side closed type (see Fig. 4 (c)) in which both side walls 13 are open.

Accordingly, when the prefabricated building is manufactured, it is possible to assemble and install the box module 10 of an appropriate type according to the use of the space.

Therefore, a description will be made of a prefabricated building in which the box module 10 is laminated, and the functions of each component constituting the box module 10 and the matters to be implemented through the components will be described in detail.

5 to 9, the prefabricated building using the box module 10 according to the present invention includes:

The box modules 10 are stacked vertically and assembled into a multi-layer structure.

In this case, after the base part B is formed by carrying out foundation work before the assembled building is built, a plurality of box modules 10 are horizontally arranged on the base part B to form individual layers, Another individual layer is laminated on the individual layers to form a multi-layered module assembly MA (1 layer, 2 layers, .... n layer, ....).

Thus, the module assembly MA is constructed by stacking a plurality of discrete layers, and the box module 10 of each discrete layer is composed of a plurality of vertical columns in which the box modules 10 are stacked on the same row up and down.

That is, the module assembly MA is schematically shown in Fig.

In this case, when the conventional box modules 10 are stacked and the module assemblies MA are assembled, the box modules 10 arranged on the same vertical row are fixed to upper and lower corner portions of the box module 10 The box module 10 is fixed.

However, when the vertically stacked box module 10 is fixed only at the corner portion, when the earthquake or vibration is applied, the module assembly MA has a weak structure especially against the lateral force.

As shown in FIG. 1, when the module assembly MA is applied to a lateral force, the building may be deformed or warped to the right or left. If such deformation or warping exceeds the elastic limit, May occur.

Therefore, in the present invention, the durability, vibration resistance, and stability of the prefabricated building are secured by increasing the vertical binding force to the module assembly MA to increase the resistance against the lateral force as described above.

To this end, a vertical tongue hole 14 is formed in the wall 13 of the box module 10 arranged on a part of the vertical columns in a plurality of vertical columns in the module assembly MA according to the present invention, The vertical tie hole 14 is not formed in the box module 10 of FIG.

In order to distinguish vertical columns in which box modules 10 with vertical tendon holes 14 are arranged and vertical columns in which box modules 10 without vertical tongue holes 14 are arranged, Are formed is referred to as a " core ".

The vertical tendon holes 14 of the respective box modules 10 disposed in the core are formed to communicate with each other so that the stranded wire 20 passes therethrough and the lower ends of the stranded wires 20 inserted into the vertical tendon holes 14 Mounted on the base.

In this state, the upper end of the strand 20 is exposed to the vertical tendon hole 14 of the box module 10 disposed on the uppermost layer of the core. When the upper end of the strand 20 is pulled and the prestress is applied, A binding force is generated.

In this case, the arrangement structure of the cores can be arranged in a vertical column positioned at the center and a vertical column positioned at the corner when the module assembly MA is viewed in a plan view, as shown in Fig.

Alternatively, the core may be disposed in a vertical column located at the center and the vertical column positioned at the corner portion as shown in FIG. 5 (a), or in a vertical column positioned at the corner portion as shown in FIG. 5 (b) have.

When the box modules are arranged in a row as shown in FIG. 5 (c), it is also possible that the core is arranged in a vertical column arranged on both sides, or the core is arranged in a vertical column arranged in the center although not shown in the accompanying drawings.

In other words, the arrangement structure of the core can be arranged in various forms unlike the view of FIG. 5, and even in this case, it is possible to adopt the most effective arrangement structure considering the vertical binding force of the module assembly MA in terms of structure.

5 to 9, the module assembly MA of the prefabricated dry building according to the present invention is constructed by stacking the individual layers in multiple layers as described above,

In this case, the upper plate 11 or the lower plate 12 of the box module 10 disposed in each individual layer, or the horizontal tendon holes 15 provided in both of them, are formed so as to communicate on the same row in the horizontal direction.

When a prestress is applied to both ends of the strand 20 after the strand 20 is inserted into the horizontal tendon 15 of the box module 10 disposed on the same horizontal row, ) Are constrained in the horizontal direction.

This horizontal restraining force restrains the box modules 10 disposed on the individual layers and integrates them to induce the same behavior when an earthquake or vibration is applied.

The horizontal tendon hole 15 may be provided on the upper plate 11 or the lower plate 12 of the box module 10 or on both the upper plate 11 and the lower plate 12 of the box module 10 It can be installed.

Hereinafter, various embodiments according to the arrangement positions of the horizontal tension holes 15 will be described in detail with reference to the accompanying drawings.

6 and 7A show a case in which the horizontal tendon holes 15 are provided on the lower plate 12 of the box module 10. [

Accordingly, the strand 20 provided on each individual layer is disposed on the bottom surface, and the constraining force in the horizontal direction is applied through the prestressing.

In this case, of the individual layers, when the strand 20 provided on the n-layer is arranged in the 'x' direction (the horizontal direction with respect to the sheet of the drawing as viewed in FIG. 7A) It is preferable that the strand 20 to be installed is arranged in the 'y' direction (the direction perpendicular to the paper in FIG. 7 (a)).

For example, when an earthquake or vibration is applied in the 'y' direction, the strand 20 of the n-1 and n + 1 layers is arranged in the same y direction as the earthquake or vibration, It can have a resistance against.

At this time, although the n-layer disposed between the n-1 and n + 1 layers is disposed perpendicular to the direction in which the earthquake or vibration is applied, the strand 20 may be vulnerable to earthquake or vibration However, the n-layer is placed between the n-1 and n + 1 layers, which are resistant to earthquakes and vibrations, and is restrained by the n-1 and n + 1 layers. .

Therefore, the stranded wires 20 installed in the respective individual layers are arranged orthogonally to each other, so that mutually complementary binding forces are provided between the respective individual layers, so that even if earthquakes or vibrations are applied in any direction,

Next, when the horizontal tent hole is formed on the top plate of the box module 10 and the stranded wire is installed on each individual layer, the same function and effect as the case where the stranded wire is disposed on the bottom plate of each individual layer can be obtained.

Even in this case, the strand 20 of each individual layer can be arranged in an orthogonal form.

However, considering the structural aspect of the building, workability, and the like, it is preferable that the horizontal tendon hole 15 is formed on the lower plate 12 of the box module 10 rather than the case where the horizontal tendon hole 15 is formed on the upper plate 11 of the box module 10 There is an advantageous aspect.

7 (b), the horizontal tendon holes 15 can be formed in both the upper plate 11 and the lower plate 12 of the box module 10. In this case, It is installed on the floor of the floor and on the ceiling.

Even in this case, when the strand 20 disposed on the upper plate 11 and the lower plate 12 of the n-layer in each individual layer is arranged in the 'x' direction, the strand 20 20 are arranged in the 'y' direction, and the strand 20 provided on the n + 1-th lower plate 12 can also be arranged in the 'y' direction.

Further, in the case where the strand 20 provided on the n-layer upper plate 11 is in the 'x' direction, for example, the upper plate 11 of the n-layer and the strand 20 provided on the lower plate 12 are orthogonal to each other, The strand 20 disposed on the n + 1-th lower substrate 12 is disposed in the y-direction, and when the strand 20 disposed on the n-th lower substrate 12 is disposed in the y- The strand 20 of the upper layer 11 of the first layer may be arranged in the 'x' direction.

6 and 7, the stranded wires 20 installed in the respective individual layers are arranged in an orthogonal manner to give mutually complementary binding forces between the individual layers.

In addition, when the strands 20 disposed on the upper and lower portions of the respective individual layers are arranged in an orthogonal fashion, a binding force in the 'x' direction (or 'y' direction) is applied to the upper plate of each individual layer, Since the binding force is applied in the 'y' direction (or 'x' direction) in the lower plate, the integration through binding force for each individual layer can be doubled.

8 and 9, the construction of the box module 10 according to the present invention and the installation structure of the strand 20 will be described in more detail.

First, a mold for manufacturing the box module 10 is installed, and then a duct-shaped duct D is placed in the mold for installing the vertical and / or horizontal tendon holes 15. [

In this case, the vertical tent hole 14 is installed in the form so as to stand upright in the vertical direction, and in the case of the horizontal tent hole 15, it is installed to be spaced apart from the bottom of the form by a predetermined height.

In this state, the concrete module is poured into the mold, and when it is cured, the box module 10 having the vertical and / or horizontal tendon holes 15 formed by the duct D is manufactured.

At this time, a trumpet T is formed at both ends of the duct D for the vertical tension hole 14 so that the strand 20 inserted from the upper part through the vertical tension hole 14 can easily enter.

The duct D for the horizontal tendon hole 15 is formed such that both ends thereof are exposed to both sides of the bottom surface of the box module 10 by a predetermined length.

In this case, as described above, when the box module 10 is of the open type, the bottom of the opened wall 13 side is formed with a space S for on-site casting in which concrete is not poured in a certain area.

The field installation space S is exposed from the bottom of the box module 10 in order to install a horizontal tendon hole 15 communicating between adjacent box modules 10 when the box module 10 is assembled in the field And provides a working space for connecting the end of the duct D with a duct coupler DC and also provides a working space for connecting a straight arrangement of the horizontal tendon holes 15 and matching box modules 10 adjacent to each other. .

Next, the installation structure of the strand 20 according to the present invention will be described with reference to FIGS. 8 and 9.

First, in order to apply the prestress by installing the strand 20, one end of the strand 20 is a fixed end fixed to the base B and the box module 10, and the other end is a prestress by pulling the strand 20 And is a tensile term to be applied.

In this case, when the vertical stiffener 20 (hereinafter referred to as "vertical stiffener 21") is installed, the fixed end of the vertical stiffener 21 is fixed to the base portion B and the horizontal stiffener 20 The fixed end of the horizontal tendon 23 is fixed to the box module 10 disposed at one side of the outermost box module 10. [

In order to install the vertical tent 21, the vertical tent 21 is inserted through the vertical tent hole 14 of the box module 10 located at the uppermost end of the module assembly MA, That is, the fixed end is exposed to the rear putting interval PS of the base portion B.

The lower end of the vertical tent 21 is inserted into a fixing hole provided in the anchor head AH and a wedge is inserted into the fixing hole to fix the lower end of the vertical tent 21 to the anchor head AH .

In this case, the vertical tent 21 may be composed of a single number or a plurality of vertical tents 21, and correspondingly, the number of fixing holes of the anchor head AH is also the same.

The vertical tent 21 is not dispersed when a plurality of vertical tents 21 are installed on the trumpet T in the form of an upper and lower light in the base portion B, So that it can be collected in the center.

In this state, the upper end of the vertical tent 21 is inserted into the fixing hole of the anchor head AH at the upper part of the upper box module 10, The prestress is applied.

When the required prestressing is applied by pulling the vertical tent 21, the jack is separated from the vertical tent 21, and at this time, the vertical tent 21 is slightly contracted by the elasticity so that the wedge is drawn into the fixing tent 21 Is mounted and fixed to the anchor head AH by the wedge.

After the both ends of the vertical tent 21 are fixed and the concrete is cured by placing the concrete in the rear placement area PS of the base B, the fixing operation of the vertical tent 21 is completed.

In this case, it is preferable that a steel plate SP is interposed between the anchor head AH and the contact portion of the concrete so that the compressive force of the vertical tent 21 can be transmitted to the concrete.

Next, in order to install the horizontal tendons 23, first, the horizontal tendons 23 are inserted in one direction of the horizontal tendon holes 15 in each individual layer, and then one side box module 10, a fixed end of the horizontal tendon 23 is installed. In this case, the fixed end installation method of the horizontal tendon 23 is the same as that of the fixed end of the vertical tent.

When the fixed end of the horizontal tendon 23 is installed, the horizontal tendon 23 is tensioned by the other box module 10 to apply a prestress thereto. Then, the horizontal tendon 23 is horizontally The fixing operation of the tendon 23 is completed.

10, the upper and lower edge portions of the box module 10 according to the present invention are provided with engaging portions 30, which are formed by vertically stacking the box modules 10 And may be formed in male and female shapes so as to be mutually coupled.

For example, when the engaging portions 30 of the lower and upper corner portions of the box module 10 of the n-layer are the male engaging portions 31 in the protruding shape, the box modules 10 of the n-1 and n + And the engaging portion 30 is formed of a groove-like female engaging portion 33.

Therefore, when the n-1 layer, the n-layer and the n + 1 layer are sequentially laminated in order to laminate the individual layers, the n-1 layer and the n + Not only the alignment position of the box module 10 is guided by the engaging portions 30 of the box module 10 when the box module 10 is stacked, The module 10 can induce stable support.

The coupling portion 30 of the box module 10 can be arranged in various forms. For example, as described above, the upper and lower edges of the box module 10 have the male coupling portions 31 The engaging portion 33) may be formed.

A male coupling portion 31 (or an female coupling portion 33) is formed at an upper edge of the box module 10 and an arm coupling portion 33 (or a male coupling portion 31) may be formed.

In this case, the engaging portions 30 of the box module 10, that is, the male engaging portions 31 and the female engaging portions 33, are formed in a cross-sectional shape in a top- It is possible to increase the assemblability.

In this case, each engaging portion 30 is manufactured by fixing a steel member when the box module 10 is manufactured. In the case of the male engaging portion 31, the cross-sectional shape of the engaging portion 30 is in the form of a downward- And a steel member having an annular flange formed at the lower end thereof is fixed to the corner of the box module 10. [

In the case of the female coupling portion 33, a groove is formed at the time of manufacturing the box module 10, and a ring-shaped steel member is fixed at the edge of the groove to the corner portion of the box module 10.

As shown in Fig. 11, the female engaging portion 33 of the engaging portion 30 according to the present invention is different from the female engaging portion 33 shown in Fig. 10, And the male engaging portion 31 is formed in the same shape as that of the male engaging portion of FIG.

12, the female engaging portion 33 is formed in the same shape as the female engaging portion 33 of FIG. 11, and the upper and lower box modules 10 to the upper plate 11 and the lower plate 12, respectively.

In this case, the male engaging portion 31 is formed with the upper and lower protrusions 31a to be inserted into the female engaging portions 33 disposed at the upper and lower portions, and the annular extending portion 31b is formed at the middle portion thereof.

At this time, a step 33a is formed at the edge of the female engaging portion 33. When the female engaging portion 33 is engaged with the female engaging portion 33, the female engaging portion 33 is provided with the stepped portion 33a of the upper and lower female engaging portions 33, A stable coupling structure can be realized.

The joining portion of the box module according to the present invention can be manufactured in various forms such as polygons, semicircles, ellipses and the like other than the above-described forms.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be taken as limiting the scope of the present invention, And should be construed as being included in the scope of the invention.

MA: Module assembly B: Foundation
PS: Post-installation section D: Duct
DC: Duct coupler T: Trumpet
AH: Anchor head SP: Steel plate
S: Space for putting on-site
10: Box module
11: top plate 12: bottom plate
13: Wall 14: Vertical tension ball
15: Horizontal tension ball
20: Strand
21: vertical tendon 23: horizontal tendon
30:
31: male engaging portion 31a:
31b: extension part 33: female coupling part
33a:

Claims (7)

An upper plate 11 and a lower plate 12,
A box module (10) comprising a plurality of walls (13) connecting the upper plate (11) and the lower plate (12)
At least one of the plurality of walls 13 is opened, and a space S for on-site casting in which concrete is not poured is formed on the bottom of the opened wall 13 side
A duct D for forming a horizontal tension hole 15 into which the strand 20 is inserted is installed in the upper plate 11 or the lower plate 12 and both ends of the duct D installed in the lower plate 12 And is formed to be exposed to both sides of the bottom of the box module 10,
The end portions of the side ducts D exposed in the space S for on-the-spot placement formed on one side of the bottom of the box module 10 when the adjacent box modules 10 are assembled are connected to each other by a duct coupler DC And then cures the concrete by placing the concrete in the space (S) for on-site casting
delete The method according to claim 1,
The horizontal tendon holes 15 are formed in both the upper plate 11 and the lower plate 12 and the horizontal tendon holes 15 of the upper plate 11 and the lower plate 12 are arranged in parallel, Wherein the box module is disposed in the form of a box.
A box module (10) comprising an upper plate (11), a lower plate (12), and a plurality of walls (13) connecting the upper plate (11) and the lower plate (12); And
And a module assembly (MA) comprising a plurality of box modules (10) arranged horizontally, and a multilayer structure formed by laminating the individual layers,
At least one of the plurality of walls 13 is opened, and a space S for on-site casting in which concrete is not poured is formed on the bottom of the opened wall 13 side
A duct D for forming a horizontal tension hole 15 into which the strand 20 is inserted is installed in the upper plate 11 or the lower plate 12 and both ends of the duct D installed in the lower plate 12 And is formed to be exposed to both sides of the bottom of the box module 10,
The end portions of the side ducts D exposed in the space S for on-the-spot placement formed on one side of the bottom of the box module 10 when the adjacent box modules 10 are assembled are connected to each other by a duct coupler DC And the concrete is placed in the space (S) for on-site casting after curing.
delete 5. The method of claim 4,
The horizontal tendon holes 15 are formed in the lower plate 12 of the box module 10,
Wherein the horizontal tendon holes (15) of the box modules (10) of each individual layer in the module assembly (MA) are arranged in an orthogonal manner.
5. The method of claim 4,
The horizontal tendon holes 15 are formed in both the upper plate 11 and the lower plate 12 and the horizontal tendon holes 15 of the upper plate 11 and the lower plate 12 of the box module 10 are arranged in parallel Or arranged in a mutually orthogonal fashion.

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