KR102620765B1 - Construction method of expandable load-bearing structure for modular building - Google Patents

Abstract

The present invention relates to a method of constructing a building by stacking hexahedral PC modules manufactured in a factory, comprising the steps of a) clearing the ground; b) installing the foundation; c) pouring concrete on a portion of the upper surface of the foundation and installing a PC module on the upper surface of the foundation; d) installing the PC module up to the top floor by repeating the steps of pouring concrete on the upper surface of the already installed PC module and installing the PC module on the upper floor; e) installing a roof module on the top of the PC module on the top floor; By including, it minimizes the size of load-bearing bodies such as columns or load-bearing walls provided in the PC module itself, and makes it possible to expand the specifications of load-bearing bodies during the construction process on site according to the scale of the building to be built.

Description

{CONSTRUCTION METHOD OF EXPANDABLE LOAD-BEARING STRUCTURE FOR MODULAR BUILDING}

The present invention relates to a method of constructing a building by stacking hexahedral PC modules manufactured in a factory. More specifically, the PC modules manufactured in a factory minimize the scale of load-bearing bodies such as columns or load-bearing walls, This relates to a method of constructing a modular building that can expand the specifications of the load-bearing body during the on-site construction process to match the scale of the building to be built.

Prefabricated buildings are completed by assembling prefabricated members on site at the factory, thereby reducing the construction period by minimizing on-site work.

The most common construction method for these prefabricated buildings is to manufacture each member that makes up the building, such as columns, beams, and walls, in advance at a factory and then assemble them on site. However, this general method of constructing a prefabricated building has a problem in that since there are many assembly locations, the construction defect rate not only increases in proportion to the assembly locations, but also the construction period increases.

Another method of constructing a prefabricated building is to pre-manufacture six-sided modules such as containers in a factory and then assemble them on site, but this is mainly used for field offices or temporary buildings used only for a certain period of time.

As an example of such a temporary building, an invention titled 'Horizontal large-space prefabricated building module and its construction method' disclosed through Registered Patent Publication No. 10-0660210 has been proposed.

As shown in FIG. 1, the registration number 10-0660210 is assembled by connecting the building modules 10 supported by the pillars 13 and the beam members 14 in the left and right directions and stacking them in the vertical direction. Therefore, buildings with large indoor spaces or large buildings with multiple floors are being built.

However, the above-mentioned architectural module is manufactured in advance at the factory, transported to the site, and installed, and the structural design of the main structure such as the column 13 or the beam member 14 is calculated based on one architectural module 10 and each member The dimensions are determined.

In addition, when it is intended to build a two-story building using this, as shown in (a) of Figure 1, the beam member 14 of the building module 10 located at the top and the beam of the building module 10 located at the bottom are used. As a means of connecting the two building modules 10 in a state in which the members 14 are simply stacked, the stacked upper and lower beam members 14 are fastened with bolts.

Accordingly, since the above-mentioned upper and lower beam members 14 do not have structural integrity, the specifications of the beam members 14 are inevitably overdesigned, and this problem is caused by the pillars even when connecting the building modules 10 in the horizontal direction. The same appears for (13).

KR 10-066020 B1

The present invention is intended to solve the above-described problems of the prior art. By constructing a building by stacking hexahedral PC modules, the joint points are minimized, but the specifications of load-bearing bodies such as pillars, walls, or beam structures are maintained during the on-site assembly process. In addition to minimizing the load-bearing specifications of PC modules manufactured at the factory by enabling expansion, the structural integrity of each PC module is improved by joining, creating a load-bearing expandable modular building that can be applied to high-rise permanent buildings. The purpose is to provide a construction method.

According to the most preferred embodiment of the present invention for solving the above problems, a) preparing the ground; b) installing the foundation; c) pouring concrete on a portion of the upper surface of the foundation and installing a PC module on the upper surface of the foundation; d) installing the PC module up to the top floor by repeating the steps of pouring concrete on the upper surface of the already installed PC module and installing the PC module on the upper floor; e) installing a roof module on the top of the PC module on the top floor; The PC module includes a module edge portion installed in a vertical direction at the corner of the hexahedron, an upper module surface portion and a lower module surface portion installed horizontally at the top and bottom of the module edge portion, respectively, and horizontally opposing modules. It consists of an upper slab and a lower slab installed between the upper module face parts and the lower module face parts, respectively, and the foundation has the cross-sectional structure of a stem base, and the foundation edge at the position where the module edge part is placed in step c) above. A method of constructing a load-bearing expandable modular building is provided, which is characterized in that it consists of a foundation surface portion installed between a portion and an adjacent foundation edge portion.

At this time, each of the foundation edge portion and the module edge portion may be made to protrude higher than each of the base surface portion and the upper module surface portion, and in this case, the height of each protrusion is sufficient to form a secondary structure of the desired standard. It has to be.

Guide pins protruding upward may be installed on the foundation edge portion and the module edge portion, and the installation of the guide pin must be done in advance before the module edge portion is installed on the upper part. In this case, the guide pin is installed on the bottom of each module edge portion. A guide groove into which the pin is inserted is provided.

The guide pins are installed with a number of guide pins spaced apart from each other in proportion to the number of module corners placed on the top, and the gap between these guide pins is determined by the distance between the module corners of each PC module after installation of the PC modules. They are spaced apart to have a set size to form a load-bearing body of the desired standard.

Step b) may include installing a shear connector that protrudes upward on the base surface, and may also protrude to the outside on the outer surface of the module corner portion located in the direction of connecting the upper and lower module surfaces of the PC module and the adjacent PC module. Shear connectors may be installed, and the installation of these shear connectors is performed before each installation step of the PC module. At this time, a hook is formed at least at the end of the shear connector installed at the module edge among the shear connectors installed on the PC module, and a vertical reinforcing bar is inserted and installed into the hook of the shear connector installed at the module edge in steps c) and d). can be included.

In addition, a binding hole is provided at the center of each cross section of the foundation edge portion and the module edge portion, and step d) or e) includes a process of inserting a tensile body into the binding hole to integrate the foundation and each PC module. can do.

In addition, step d) may include the process of installing insulation on the upper surface of the upper slab before pouring concrete.

Since the present invention assembles hexahedral PC modules with space by simply stacking them, the number of joining points is significantly smaller than that of a typical prefabricated building, minimizing the possibility of defects, and during the joining process between each PC module, there is no need for columns or beam structures. The same load-bearing body can be expanded, making it possible to minimize the dimensions of the pillars and beam structures comprised in the PC module itself when manufacturing a PC module, thereby reducing the weight of the PC module and maximizing the available space inside it.

Figure 1 is a perspective view of a prefabricated building module structure according to the prior art and a cross-sectional view of its laminated structure.
Figure 2 is a cross-sectional view of an expanded load-bearing body of the present invention.
Figure 3 is a perspective view of an embodiment of the PC module of the present invention.
Figure 4 is a state diagram in which the basis of the present invention is installed.
Figures 5 to 8 are perspective views of the process of installing a PC module on the upper surface of the foundation.
Figures 9 to 11 are perspective views of each process of installing an upper PC module on the upper surface of an already installed PC module.
Figures 12 and 13 are perspective views of each process of installing the roof module on top of the top floor PC module.
Figure 14 is an explanatory diagram of an example in which the assembled modular building of the present invention is additionally reinforced.

Hereinafter, the present invention will be described in detail with reference to the attached drawings based on the most preferred embodiment. However, when explaining the present invention in detail, if the technical idea of the present invention is obscured or unclear, the description of the known configuration will be omitted.

Figure 2 is shown to explain the expansion of the load-bearing body, which is one of the core technical ideas of the present invention, and is a ramen-structured building using two PC modules 200 equipped with module edge portions 210 of a column structure. This is an example of building.

In the present invention, after manufacturing the PC module 200 by minimizing the cross-sectional size of the module edge portion 210, etc., the spacing between each PC module 200 is adjusted in the field, and the space between these PC modules 200 is adjusted. The concrete (C) poured into is integrated with the PC modules (200) through shear connectors (511), etc., so that the planned cross-section of the column (610) can be formed.

That is, the present invention allows setting the specifications of load-bearing bodies such as pillars 610, load-bearing walls, and beam structures 620 through the arrangement spacing of the hexahedral PC modules 200, so that the pillars are provided independently of the PC module 200 itself. It not only prevents the cross-section of the beam structure from becoming excessive, but also increases the bearing capacity, allowing the building to be built to have a large scale or number of floors.

Figure 3 shows an embodiment of the PC module 200 of the present invention for this purpose.

As shown in Figure 3, the PC module 200 of the present invention includes a module edge portion 210, an upper module surface portion 220A and a lower module surface portion 220B, an upper slab 230A, and a lower slab ( 230B) and has a hexahedral shape, where a wall portion may be further formed.

The module edge portion 210 is a portion installed in the vertical direction at the corner of the hexahedron. In the ramen structure, this corresponds to a pillar within the PC module 200, and in the wall structure, it corresponds to the side edge portion of the wall structure.

When two PC modules 200 are connected, they are arranged to be spaced apart by a set amount, and the two module edge parts 210 facing each other are integrated by the concrete (C) poured between them, thereby maintaining the internal strength of one column 610. Since it forms a sieve, a shear connector 511 protruding to the outside must be installed on the outer surface of the module edge portion 210 located in the direction where the two PC modules 200 are connected to each other as described above.

The shear connector 511 may be installed together when manufacturing the PC module 200, but it is preferable to facilitate the manufacturing of the PC module 200 by installing it during the construction process of a future building.

A protruding holder 211 that protrudes further upward than the upper module surface 220A may be formed on the module edge portion 210. The upper protruding structure of the module edge portion 210 facilitates the construction of the expanded supplementary structure 620, as will be described later. Therefore, the height of the protruding holder 211, where the module corner portion 210 protrudes from the upper module surface portion 220A, is equal to the thickness of the upper module surface portion 220A and the thickness of the lower module surface portion 220B of the PC module 200 stacked thereon. It must be the size set to form the secondary structure 620 of the standard to be built by structural design, including.

A guide pin 501 protruding upward may be installed on the upper surface of the module edge portion 210. In this case, the bottom of the module edge portion 210 must also be provided with a guide groove 502 into which the guide pin 501 is inserted. The guide pin 501 and guide groove 502 enable the stacking operation of the PC module 200 to be performed accurately and efficiently.

In addition, the module edge portion 210 may be further provided with a binding hole 503.

The binding hole 503 is preferably located at the center of the cross section of the module edge portion 210, and the tensile body 504 is inserted to form the entire structure from the foundation 100 to the roof module 300 or the PC module 200. structurally integrates them. This binding hole 503 may have a structure that penetrates from the top to the bottom of the module edge portion 210, or may be formed only on a portion of the top and bottom surfaces.

The upper module surface portion 220A is a portion installed in the horizontal direction at the top of the module edge portion 210. In the ramen structure, it corresponds to the upper beam structure within the PC module 200, and in the wall structure, it corresponds to the side edge of the upper slab structure. This applies to the corners.

The lower module surface portion 220B is a portion installed horizontally at the bottom of the module edge portion 210. In the ramen structure, it corresponds to the lower beam structure within the PC module 200, and in the wall structure, it is the side edge of the lower slab structure. This applies to the corners.

Accordingly, the upper module surface portion 220A and the lower module surface portion 220B are located at the upper and lower portions between the two adjacent module edge portions 210, thereby forming a ramen structure.

A shear connector 511 may be installed on each of the upper module surface portion 220A and the lower module surface portion 220B. The shear connector 511 installed here may also be installed together when manufacturing the PC module 200, but it is preferable to install it during the construction process of a future building.

The upper slab (230A) and the lower slab (230B) are located inside each of the upper module surface portion (220A) and the lower module surface portion (220B). That is, the upper slab 230A is installed between horizontally opposing upper module surface portions 220A, and the lower slab 230B is also installed between horizontally opposing lower module surface portions 220B. The upper surface of the upper slab (230A) and the lower surface of the lower slab (230B) may have a waffle structure.

Next, the above-mentioned technical idea will be explained in detail through the most desirable example of the process of building a building by stacking PC modules 200. In addition, for convenience of explanation, it is based on a ramen structure.

In the present invention, the method of constructing a building by stacking hexahedral PC modules 200 includes a) preparing the ground, b) installing the foundation 100, c) installing a PC module on the upper surface of the foundation 100 ( Step of installing 200), d) Step of installing the PC module 200 up to the top floor by repeating installing the upper PC module 200 on the upper surface of the installed PC module 200, e) Installing the roof module 300 Steps are included and proceed sequentially, and each of these steps is explained in detail as follows.

a) preparing the ground;

Prepare the ground of the site where you want to build a building evenly.

This stage may include digging, and depending on the ground conditions, processes to strengthen the ground, such as driving support piles, may also be included.

b) installing the foundation 100;

Figure 4 shows the state in which the foundation 100 on which the PC module 200 will be placed is installed.

It is preferable that the base 100 has the cross-sectional structure of a stem base so that the entire module edge portion 210 and the lower module surface portion 220B of the PC module 200 are placed on the upper surface of the base 100.

The base 100 is composed of a base edge portion 110 and a base surface portion 120 corresponding to the PC module 200 described above. Therefore, the module edge part 210 of the PC module 200 is placed on the upper surface of the basic edge part 110, and the basic surface part 120 is located between the basic edge parts 110 and the PC module ( The lower module surface portion 220B of 200) can be placed.

The base edge portion 110 may be provided with a protruding holder 111 that protrudes upward from the base surface portion 120, as in the module edge portion 210.

The base edge portion 110 is also provided with the above-described guide pin 501 and the binding hole 503, and when the binding hole 503 is a through hole, a fixing groove 112 is formed on the bottom as shown in FIG. 14. ) is further provided. In addition, a shear connector 511 is installed on the base surface portion 120.

The foundation 100 at this stage may be manufactured in advance using a PC and installed on site, or may be built directly on site.

The guide pin 501 and the shear connector 511 must be installed before the next installation step of the PC module 200. Therefore, when the foundation 100 is manufactured from PC, this step includes the installation process of the shear connector 511 protruding upward from the foundation surface portion 120.

Meanwhile, the foundation edge portion 110 is located where the module edge portion 210 of the PC module 200 is located, so the foundation 100 on which two PC modules 200 are placed adjacent to each other in the horizontal direction. A basic edge portion 110 is also located on the inside. A plurality of module edge portions 210 are installed on the foundation edge portion 110 inside the foundation 100, where a number of guide pins 501 proportional to the number of module edge portions 210 are mutually aligned. They must be installed so that they are spaced apart.

For example, in a structure in which one guide pin 501 is inserted into each module corner portion 210, as shown in FIG. 3, when two module corner portions 210 are located, the base edge portion 110 The two guide pins 501 installed must be installed spaced apart from each other to correspond to the set separation distance of the PC modules 200. That is, the spacing of the guide pins 501 must be set to a size that allows the load-bearing body of the pillar 610 to be expanded to the desired standard after installation of the PC modules 200. This also applies when another PC module 200 is stacked on the top of the PC module 200 in a future step.

In addition, reinforcing bars for future connection with the vertical reinforcing bars 521 can be installed in advance on the foundation edge portion 110 inside the foundation 100.

c) installing the PC module 200 on the upper surface of the foundation 100;

Figures 5 to 8 each illustrate the process of installing the PC module 200 on the upper surface of the foundation 100.

First, concrete (C) is poured on a part of the upper surface of the foundation 100 (specifically, the upper surface of the foundation surface portion 120) as shown in FIG. 5. The pouring height of concrete (C) should be consistent with the upper surface of the protruding holder (111).

Next, as shown in FIG. 6, one of the PC modules 200 is installed on the upper surface of the foundation 100.

The PC module 200 is installed by inserting the guide pin 501, which is previously installed to protrude from the base edge portion 110, into the guide groove 502 of the PC module 200. As a result, the PC module 200 can be naturally placed in the set position.

At the time of mounting the PC module 200 on the upper surface of the foundation 100, the concrete (C) must be done in a state of unhardened raw concrete. Accordingly, the shear connector 511 installed on the base surface portion 120 of the foundation 100 and the shear connector 511 installed on the lower module surface portion 220B of the PC module 200 are embedded within the concrete (C), thereby forming the foundation. Structural integrity can be secured between (100) and the PC module (200).

As shown in FIG. 7, when installation of one PC module 200 on the foundation 100 is completed, another PC module 200 to be connected to the foundation 100 is installed in the same manner as described above. Install on the top. Accordingly, adjacent PC modules 200 are also naturally spaced apart by the set amount of each module edge portion 210.

When the installation of the PC modules 200 on the upper surface of the foundation 100 is completed, vertical reinforcing bars 521 are placed inside the gap between each module edge part 210, and the inner end of each module edge is blocked. Afterwards, concrete (C) is poured to build an expanded load-bearing column (610). Figure 8 shows a state in which concrete (C) is poured inside the gap between each module corner portion 210 to form an expanded pillar 610.

At this time, the vertical reinforcing bar 521 may be connected to the foundation edge portion 110 by installing a joint reinforcing bar in advance as described above.

In addition, before the PC module 200 is installed on the foundation 100, the shear connector 511 installed on the foundation 100 and the PC module 200 can increase the composite force by forming a hook 511a at the end. In addition, it is preferable to form a hook 511a at least at the end of the shear connector 511 installed on the module edge portion 210 to prevent buckling of the vertical reinforcing bar 521 by the hook 511a. The direction of the hook 511a for this should be inside the space formed by the gap between the module edge parts 210, and in this step, the vertical reinforcing bar 521 is installed on the module edge part 210 with the shear connector 511. When inserted into the hook 511a, as shown in FIG. 2, the vertical reinforcing bar 521 is surrounded by the hook 511a and buckling due to axial force is prevented.

d) installing the PC module 200 up to the top floor by repeating installing the upper layer PC module 200 on the upper surface of the already installed PC module 200;

9 to 11 show each process of installing the upper PC module 200 on the upper surface of the PC module 200 installed on the foundation 100.

This step may further include the process of installing interlayer members for insulation or sound insulation between the upper and lower floors. For example, as shown in FIG. 9, by installing a plate-shaped insulation material 531 between the upper slab 230A of the lower layer and the lower slab 230B of the upper layer, in addition to the function as the above-described interlayer member, an expanded secondary structure (described later) Constructability can be further improved by having an inner formwork function for the construction of 620).

When the above-described insulation 531 installation work is completed, concrete (C) is poured on the upper surface of the upper module surface 220A of the already installed PC module 200, similar to the previous pouring of concrete (C) on the base surface 120. Thus, the surface is aligned with the upper surface of the protruding mounting parts (111, 211) of the module corner part (210). Figure 10 shows a state in which concrete (C) is poured on the upper surface of the upper module surface portion (220A) to construct the expanded beam structure 620.

When the pouring of concrete (C) on the upper surface of the upper module surface (220A) of the already installed lower PC module (200) is completed, the upper PC module (200) is replaced with the lower PC module (200) in the same manner as in the previous step c). Installed at the top of That is, the guide pin 501 previously installed on the module edge portion 210 of the lower layer PC module 200 is positioned in the guide groove 502 provided on the bottom of the module edge portion 210 of the newly installed upper PC module 200. It must be inserted so that it can be spaced apart from another adjacent upper layer PC module 200 by a set amount. The installation method of the vertical reinforcing bar 521 is also no different from that described in step c).

Of course, the PC modules 200 installed in this step must be installed when the concrete (C) poured on the upper surface of the already installed lower layer PC module 200 is unhardened raw concrete, and at this time, the shear connector 511 is used as the raw concrete. The point that it must be installed before the PC module 200 is installed to be embedded in concrete is the same as when building the extended pillar 610.

After pouring concrete (C) on the upper surface of the already installed PC module (200), the process of installing the PC module (200) on the upper floor is repeated to install the PC module (200) up to the top floor. Figure 10 shows the PC module 200 installed up to the planned top floor.

e) Step of installing the roof module 300

Figures 12 and 13 show each step in the process of installing the roof module 300 on top of the top PC module 200.

As shown in FIG. 12, an insulating material 531 is installed on the upper slab 230A of the uppermost PC module 200, and concrete (C) is placed on the upper surface of the upper module surface portion 220A where the concrete (C) pouring space is formed. After pouring C), when the concrete (C) is raw concrete before hardening, the roof module 300 is installed to integrate them.

In addition, concrete (C) is poured into the space between adjacent roof modules 300 so that the expanded pillar 610 is structurally integrated with the roof module 300. Figure 13 shows the state in which the roof module 300 is installed through the above process.

Inserting the guide pin 501 into the guide groove 502 and installing the vertical reinforcement 521 during the above process are no different from the stacking process of the PC module 200.

The structural part of the modular building can be completed by completing the installation work of the roof module 300 only by pouring the concrete (C) described above, but in addition, the work on the structural part of the modular building from the foundation 100 to the roof module 300 can be completed. Additional reinforcement means may be provided for strong integration.

For the above additional reinforcement means, the above-described binding hole 503 must be provided at the corners of the foundation edge portion 110, the module edge portion 210, and the roof module 300.

That is, the above additional reinforcement means are between the foundation 100 and the PC module 200, between each PC module 200, and between the PC module 200 and the roof module 300 through the binding hole 503. By tensile bonding, they can be integrated.

As described above, the tensile bond structurally integrates the entire PC module 200 from the foundation 100 to the roof module 300.

For example, the binding hole 503 from the foundation edge portion 110 to the support module is made into a penetrating structure, one end of the tensile body 504, such as a steel bar or strand, is fixed to the roof module 300, and the other end is connected to the foundation edge. It may be fixed to the section 110, or if the building is a high-rise building, the entire section may be divided and both ends of the tensile body 504 may be fixed to both ends of each section as described above. However, in the case where it is desired to bind the entire building with one tensile body 504 as in the former, this must be done after installation of the roof module 300 is completed, but in the case where it is desired to bind each section as in the latter, Work on additional reinforcement means must be performed in each section during the installation process of the PC module (200).

In contrast, a binding hole 503 that does not penetrate the upper surface of the foundation edge portion 110, the upper and lower surfaces of the module edge portion 210, and the bottom surface of the corner of the roof module 300 is provided, After installing the sleeve with female threads in the binding hole 503, the tensile body 504 with male threads on both sides is used between the base 100 and the PC module 200, between each PC module 200, and , the PC module 200 and the roof module 300 can also be integrated.

Figure 14 shows an example in which the entire building is bound together with one tensile body 504. At this time, as described above, the bottom of the foundation edge portion 110 must be provided with a fixing groove 112 in advance so that the end of the tensile body 504 can be fixed even after the foundation 100 is installed.

In the above, the present invention has been described in detail with reference to specific embodiments, but the embodiments are merely examples to make the present invention easier to understand, so those skilled in the art will understand the scope of the technical idea of the present invention. It is obvious that this can be implemented with various modifications. Accordingly, such modifications will be said to fall within the scope of the present invention as set forth in the claims.

100; Basics 110; Foundation corner part
111,211; Protruding holder 112; Fixed groove
120; Basal area 200; PC module
210; Module corner part 220A; Upper module surface
220B; Lower module surface 300: Roof module
501; Guide pin 502; Guide Home
503; binder 504; tensile body
511; Shear connector 511a; hook
521; vertical rebar 531; insulator
610; Column 620; Complementary structure

Claims (11)

In the method of building a building by stacking hexahedral PC modules 200,
a) preparing the ground;
b) installing the foundation 100;
c) pouring concrete (C) on a portion of the upper surface of the foundation (100) and installing the PC module (200) on the upper surface of the foundation (100);
d) pouring concrete (C) on the upper surface of the already installed PC module (200) and repeating the process of installing the PC module (200) on the upper floor to install the PC module (200) up to the top floor;
e) installing the roof module 300 on the upper surface of the PC module 200 on the top floor; As it includes,
The PC module 200 is,
A module edge portion 210 installed in a vertical direction at the corner of the cube, an upper module surface portion 220A and a lower module surface portion 220B installed horizontally at the top and bottom of the module edge portion 210, respectively, and a horizontal It consists of an upper slab (230A) and a lower slab (230B) installed between the opposing upper module face portions (220A) and the lower module face portions (220B),
The base 100 is,
It has the cross-sectional structure of a stem and a base surface portion 120 installed between the foundation edge portion 110 at the position where the module edge portion 210 is placed in step c) and the adjacent foundation edge portion 110. It is composed,
Step b) includes installing a shear connector 511 protruding upward on the base surface portion 120, and the upper and lower module surface portions 220B of the PC module 200 and the adjacent PC module 200. A shear connector 511 protruding outward is installed on the outer surface of the module edge portion 210 located in the direction of connection with the. The shear connector 511 is installed before each installation step of the PC module 200. ,
Among the shear connectors 511 installed on the PC module 200, at least the shear connector 511 installed on the module edge portion 210 is a load-bearing expandable modular building, characterized in that a hook 511a is formed at the end. Construction method. According to paragraph 1,
The base edge portion 110 protrudes upward from the base surface portion 120,
A method of constructing a load-bearing expandable modular building, characterized in that the module edge portion 210 protrudes upward from the upper module surface portion 220A. According to paragraph 2,
The height at which the module edge portion 210 protrudes from the upper module surface portion 220A is a size set to form a beam structure 620 of the desired standard, including the thickness of the upper and lower module surface portions 220B. A method of constructing a load-bearing expandable modular building. According to paragraph 1,
Step b) includes the process of installing an upwardly protruding guide pin 501 on the base edge portion 110,
A method of constructing a load-bearing expandable modular building, characterized in that the PC module (200) is provided with a guide groove (502) into which a guide pin (501) is inserted on the bottom of the module edge portion (210). According to paragraph 4,
The foundation edge portion 110 inside the foundation 100, which is configured to install a plurality of module edge portions 210 among the foundation edge portions 110, has a number proportional to the number of module edge portions 210. The guide pins 501 are installed spaced apart from each other,
The spacing of the guide pins 501 is such that after installation of the PC modules 200, the spacing between the module edge portions 210 of each PC module 200 is the size set to form a load-bearing body of the desired standard. A method of constructing a load-bearing expandable modular building, characterized in that: delete delete According to paragraph 1,
Steps c) and d) include the process of inserting and installing vertical reinforcement 521 into the hook 511a of the shear connector 511 installed on the module edge portion 210. How to construct a building. According to paragraph 1,
The installation of the PC module 200 in steps c) and d) is performed when the concrete (C) placed on the upper surface of the lower foundation 100 or the upper surface of the lower PC module 200 is unhardened raw concrete. A method of constructing a load-bearing expandable modular building. According to paragraph 1,
A binding hole 503 is provided at the center of each cross section of the base edge portion 110 and the module edge portion 210, respectively,
Step d) or step e) includes the process of integrating the foundation 100 and each PC module 200 by inserting the tensile body 504 into the binding hole 503. Construction method of modular buildings. According to paragraph 1,
Step d) is a method of constructing a load-bearing expandable modular building, characterized in that it includes the process of installing insulation 531 on the upper surface of the upper slab (230A) before pouring concrete (C).

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