KR102804833B1 - Shear reinforcement structure of modular building and its construction method - Google Patents

Abstract

The present invention relates to a shear reinforcement structure for a modular building constructed by assembling building modules manufactured by the precast method, wherein the shear reinforcement structure is characterized in that a precast shear wall module of a reinforced concrete structure is installed on the left and right sides of a modular building constructed by continuously assembling a plurality of skeletal building modules composed of columns, floor slabs, and ceiling slabs, thereby enabling a high-rise modular building with high space utilization efficiency to be constructed quickly.

Description

{SHEAR REINFORCEMENT STRUCTURE OF MODULAR BUILDING AND ITS CONSTRUCTION METHOD}

The present invention relates to a shear reinforcement structure for a modular building constructed by assembling building modules manufactured by the precast method, which is assembled together with the modular building to resist lateral loads caused by earthquakes or strong winds, and a construction method thereof.

Modular construction refers to the process of manufacturing vertical structures such as columns and walls and main structures such as beams and slabs using precast methods and assembling them on-site to build a building with the same modular structure, or to assembling the structures in advance at a factory to produce a building module as a single unit and connecting them horizontally and vertically on-site to build the planned building.

This type of modular construction minimizes or omits wet work on site, thereby improving economic efficiency through shortened construction periods and ensuring high quality of factory-made components or module units. As such, its application is rapidly increasing, especially in buildings such as schools and dormitories where identically shaped spaces are continuously repeated or require expandability of space. In particular, attempts to apply it to high-rise buildings such as apartments and offices are gradually increasing.

Meanwhile, high-rise buildings require sufficient resistance to lateral loads caused by strong winds or earthquakes.

However, when setting the cross-section of major structural members such as columns for building modules for modular construction, structural calculations are usually made based on a single building module that is manufactured. Accordingly, since the cross-section of the columns of the building modules manufactured must be different depending on the number of floors of the building to be constructed, there are problems such as limited cost reduction through mass production, waste of cost due to overdesign, and reduction of the usable space of the building.

Accordingly, there are cases where shear reinforcement is applied to building modules, and as one of the representative methods, there is a shear reinforcement method of installing braces in an X shape between the upper and lower horizontal members or between the left and right vertical members, as shown in Fig. 1 disclosed in Patent Publication No. 10-1632681.

However, the shear reinforcement by the above braces must be performed for each building module, and the surface where the braces are installed limits the variability such as the expansion of space, making it difficult to construct a large-space building.

KR 10-1632681 B1

The present invention is intended to solve the above-mentioned problems of the prior art, and provides a shear reinforcement structure for a modular building and a construction method thereof, which can maintain the spatial expandability between building modules as is, can be assembled together in the same manner as assembling building modules without separate work such as welding or concrete pouring on site, and provides balanced shear reinforcement for the entire building so that twisting of the building does not occur.

The shear reinforcement structure of a modular building according to the most preferred embodiment of the present invention for solving the above-mentioned problem is configured by installing a precast shear wall module of a reinforced concrete structure on the left and right sides of a modular building constructed by sequentially assembling a plurality of skeletal building modules composed of columns, floor slabs, and ceiling slabs.

The most preferred embodiment of the above shear wall module comprises a shear wall portion in the shape of a wall body, a shear column portion in the shape of a column formed on the shear wall portion, and a shear beam portion formed at the upper and lower portions of the shear wall portion and connected to the shear column portion.

At this time, the shear column portion may be formed to protrude inwardly from the shear wall portion and configured with the same spacing and number as each column located on the side of the building module, and together with or separately from this, at least the shear column portion and the shear wall portion may have a tensile body hole formed to penetrate vertically.

In addition, in the most preferred embodiment regarding the combination of the building module and the shear wall module, the shear column of the shear wall section and the column of the building module are each installed with a fixing plate having guide pin holes on their upper and lower surfaces, and the combination of the shear column section and the column in contact therewith is structured such that guide pins are inserted and fixed into the guide pin holes of each of the fixing plates of the shear column section and the column, and a connecting plate having a guide pin hole for inserting each of the guide pins is installed on the upper surface of each of the fixing plates of the shear column section and the column.

Among the columns of the building module, a wing wall may be further provided in front of one of the columns on the outer side, and in this case, the shear wall portion of the shear wall module may be configured in a shape in which the tip portion surrounds the wing wall.

The method for constructing a modular building using the above-described shear reinforcement structure is performed in the following sequential manner: a) a step of installing a building module, b) a step of arranging a shear wall module, c) a step of connecting the building module and the shear wall module, d) a step of repeating steps a) to c) above the building module of a lower floor to complete the installation of the building module and shear wall module up to the uppermost floor, and e) a step of installing a roof module and integrating the building module and shear wall module of the entire floor to complete the modular building.

The present invention forms a high lateral force resistance system for responding to earthquakes or strong winds for the entire building simply by installing shear wall modules on both sides of a modular building, so that shear reinforcement for each building module is not necessary even when constructing a high-rise modular building.

Accordingly, even when constructing a high-rise modular building, there is no need to increase the cross-section of each column of the building module, and it is possible to have a high resistance to lateral force without interfering with spatial variability between each building module, thereby enabling rapid construction of a high-rise building with efficient use of space.

Figure 1 is a perspective view of a building module with shear reinforcement according to the prior art.
Figure 2 is a perspective view of a modular building to which the shear reinforcement structure of the present invention is applied.
Figure 3 is a perspective view of a shear wall module for the above shear reinforcement structure.
Figure 4 is an explanatory diagram of a lateral force resistance system using the above shear wall module.
Figure 5 is a perspective view of a building module for constructing the above modular building.
Figure 6 is a diagram explaining the process of connecting a building module and a shear wall module.
Figure 7 is an explanatory diagram of the step of installing a building module during the construction process of the above modular building.
Figure 8 is an explanatory diagram of the step of installing a shear wall module during the construction process of the above modular building.
Figure 9 is an explanatory diagram of the step of connecting the building module and the shear wall module during the construction process of the above modular building.
Figure 10 is an explanatory drawing showing the state in which the construction modules and shear wall modules have been installed up to the top floor during the construction process of the above modular building.
Figure 11 is an explanatory drawing of the completed modular building.

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

FIG. 2 illustrates the shape of a modular building (1) to which a shear reinforcement structure is applied according to one embodiment of the present invention, FIG. 3 illustrates one embodiment of the structure of a shear wall module (30) for the shear reinforcement structure, FIG. 4 is an explanatory diagram of a lateral force resistance system by the shear wall module (30), and FIG. 5 illustrates one embodiment of a building module (20) which is a unit chain for constructing the modular building (1).

The shear reinforcement structure of the present invention is configured by assembling a plurality of skeletal building modules (20) in parallel or vertically to enable spatial variability or expandability, such as a column (22) as shown in FIG. 5 (for reference, the column (22) herein does not mean only the pure length portion between a floor slab (21) and a ceiling slab (23) for convenience of explanation, but also means the length up to the portion of the floor slab (21) and the ceiling slab (23) extended therefrom) and a floor slab (21) and a ceiling slab (23), thereby improving the resistance to lateral load of a modular building (1) constructed by continuously assembling them.

In addition, as shown in Fig. 2, the above shear reinforcement structure prevents the modular building (1) from being twisted due to eccentricity when a lateral force is applied by installing shear wall modules (30) on both the left and right sides of a modular building (1) constructed by sequentially assembling a plurality of building modules (20), and also prevents the spatial variability or expandability from being hindered by preventing a separate reinforcement structure from being formed inside.

In addition, since the shear wall module (30) is installed on the left and right sides of the modular building (1) as described above, the shear wall module (30) can be made to perform an exterior function, and accordingly, separate exterior construction for this part can be omitted.

These shear wall modules (30) are manufactured as precast reinforced concrete structures and can be formed as a single wall structure. However, in a preferred embodiment, as shown in Fig. 3, the shear wall section (32) of the wall structure, the shear column section (31) of the column structure, and the shear beam section (33) of the beam structure are formed integrally.

The above shear column parts (31) are composed of at least two or more, and the shear beam parts (33) are located at the upper and lower parts of the shear wall parts (32) and are connected to the shear column parts (31).

The shear column section (31) formed integrally with the shear wall section (32) in this way not only facilitates the connection of the shear wall module (30) to the building module (20), but also forms a lateral force resistance system stronger than a frame structure by allowing the shear wall module (30) to have a truss structure system.

For example, a shear column (31) and shear beams (33) formed at the upper and lower portions thereof form a square frame skeleton structure. A shear wall portion having a planar structure is formed inside this square fracture structure, and when a lateral force is applied to the shear wall module (30), as illustrated in FIG. 4, the shear column portions (31) on both sides function as vertical members of the truss, the upper and lower shear beams (33) function as the upper and lower chords of the truss, and the shear wall portion (32) inside functions as the diagonal member of the truss, and the shear wall module (30) protects the modular building (1) with the shear rigidity of a truss structure that is stronger than a frame structure.

It is preferable that the above shear column (31) and shear beam (33) protrude inwardly of the shear wall (32), i.e. in the direction of the building module (20), so that the flatness of the exterior appearance of the modular building (1) is maintained without being disturbed, and that an installation space for insulation is formed on the inner surface of the shear wall (32).

In addition, the shear column parts (31) should be configured with the same number and spacing as each column (22) located on the side of the building module (20) so that they can be tightly connected to each column (22). For example, the building module (20) illustrated in FIG. 5 has four columns (22), with two placed at the front and rear positions on each side. As illustrated in FIG. 3, the shear column parts (31) of the shear wall module (30) should also be arranged with two at the same spacing.

The connection of the shear wall module (30) to the building module (20) can be made in various ways, and may be different from the connection method between the building modules (20), but it is desirable to ensure work efficiency by matching the connection method between the building modules (20).

For example, although not illustrated, the connection between building modules (20) can be made by pouring on-site concrete between columns (22) to integrate the columns (22) adjacent to each other on the top, bottom, left, and right. In this case, the building module (20) and the shear wall module (30) can be connected by pouring on-site concrete between the columns (22) of the building module (20) and the shear column section (31) of the shear wall module (30) to integrate them. Of course, even if the connection between the building modules (20) is made by pouring on-site concrete as described above, the connection between the building module (20) and the shear wall module (30) can also be made by using the fixing plate (110) and the connecting plate (120) described below.

Another embodiment of the connection between the building modules (20) is a method using a fixed plate (110) and a connecting plate (120). In this case, it is preferable to connect the building module (20) and the shear wall module (30) in the same way. Of course, as described above, the connection method may be different.

A detailed description of the method of using the latter fixed plate (110) and connecting plate (120) is as follows.

The connection between the shear column (31) of the shear wall module (30) and the column (22) of the building module (20) in contact therewith is achieved by connecting their respective upper and lower ends with a connecting plate (120). The connection between the building modules (20) is also achieved by connecting the respective upper and lower ends of the columns (22) with a connecting plate (120).

To this end, a fixing plate (110) that facilitates connection with a connecting plate (120) may be installed embedded in the upper and lower ends of the shear column (31) and all columns (22).

The fixed plate (110) and the connecting plate (120) can be connected to each other using a fastening means such as a bolt. However, in a preferred embodiment of the present invention, the fixed plate (110) and the connecting plate (120) are connected using a guide pin (130).

The above guide pin (130) protrudes from the upper part of the connecting plate (120) even after the fixed plate (110) and the connecting plate (120) are fixedly connected, facilitating the installation of the upper layer building module (20) or shear wall module (30).

For the use of these guide pins (130), each of the fixed plate (110) and the connecting plate (120) is provided with a guide pin hole (111, 121).

Figure 6 illustrates a process of connecting a shear column part (31) of a shear wall module (30) to a column (22) of a building module (20) using a fixed plate (110) and a connecting plate (120).

As shown in (a) of Fig. 6, first, the guide pin (130) is inserted and fixed into the guide pin hole (111) of the fixing plate (110) provided on each of the shear column (31) and the column (22). The guide pin (130) may be installed in the guide pin hole (111) by screw fastening by forming screw threads on the inner surface of the guide pin hole (111) and also forming screw threads on the outer surface of the guide pin (130). Alternatively, the guide pin (130) may be inserted into the guide pin hole (111) and then fixed by spot welding.

When the fixed installation of the guide pin hole (111) to the fixed plate (110) is completed, as shown in (b) of FIG. 6, the connecting plate (120) is installed so that the guide pins (130) installed on the fixed plate (110) of the shear column part (31) and the column (22) are inserted into the guide pin hole (121) of the connecting plate (120) so as to cover the upper surface of the fixed plate (110), thereby connecting the shear column part (31) and the column (22) in contact therewith.

The installation of the above-mentioned shear wall module (30) is performed after the installation of all building modules (20) for the corresponding floor of the modular building (1) is completed, and is performed on each side of the modular building (1) as described above.

Apartment complexes and other multi-family housing buildings can also be constructed with the modular building structure (1) of the present invention, and the building module (20) for this purpose can additionally be provided with space for a balcony.

For example, a balcony slab (51) that protrudes outward from a column (22) may be provided on the floor slab (21) of the building module (20), and a wing wall (52) for separation between households may be further provided in front of one of the columns (22) located at the front of the building module (20), that is, one of the columns (22) on the outer side where the balcony slab (51) is located.

However, since the wing wall (52) is formed only on one side of the building module (20), in this case, the wing wall (52) does not exist on one side of the constructed modular building (1).

At this time, if the shear wall part (32) of the shear wall module (30) is installed in a shape in which the leading edge surrounds the wing wall (52), there is no need to construct a separate finishing wall for the part of the modular building (1) where the wing wall (52) does not exist.

When constructing a multi-layer modular building (1), the building module (20) has a laminated structure, and the shear wall module (30) also has the same laminated structure as the building module (20).

The integration of the lower building module (20) and the upper building module (20) may be accomplished by bolt fastening. However, the bolt fastening for each floor increases the amount of work and requires additional work such as mortar filling, which not only makes the work itself cumbersome but also increases the construction period. In addition, since the entire modular building (1) is indirectly integrated by fixing each floor, stress is not distributed between each floor, so if a concentrated load occurs at a connection point of one floor, the entire modular building (1) becomes structurally unstable.

Accordingly, in one embodiment of this, by integrating the base (10) to the roof module (40) into a single tension member (140), even if a concentrated load occurs at a connection point of a certain floor, the resulting stress is distributed throughout the entire modular building (1) through the tension member (140), thereby ensuring structural stability. To this end, tension member holes (141) penetrating vertically are provided in the building module (20) and the shear wall module (30).

At this time, the tension body hole (141) installed in the shear wall module (30) may be formed in the shear wall portion (32), but is preferably formed in the shear column portion (31) in the same way as it is formed in the column (22) of the building module (20). Of course, the tension body hole (141) may be formed in the shear wall portion (32) together with the shear column portion (31).

These tensile holes (141) can be easily formed by embedding a sheath tube in the column (22) and shear column section (31).

In addition, a tensile body (140) penetration hole must be provided in the fixed plate (110) and the connecting plate (120) so that the tensile body (140) can pass through.

So far, the structure of the shear wall module (30) and the method of installing it in a modular building (1) have been described. Next, the construction method of a modular building (1) in which the shear wall module (30) is installed using the above-described fixing plate (110) and connecting plate (120) will be described.

Figures 7 to 11 are drawings to explain each step of the construction process of the above-mentioned modular building (1).

A modular building (1) in which a shear wall module (30) of the present invention is installed is constructed in a manner in which the following steps are sequentially performed: a) a step of installing a building module (20); b) a step of arranging a shear wall module (30); c) a step of connecting the building module (20) and the shear wall module (30); d) a step of repeating the steps of installing the building module (20) and the shear wall module (30) and connecting them to complete the installation of the building module (20) and the shear wall module (30) up to the top floor; and e) a step of installing a roof module (40) and integrating the building module (20) and the shear wall module (30) of the entire floor to complete the modular building (1).

Each of the above steps is explained with drawings as follows.

a) Step of installing a construction module (20);

After clearing the land and installing the foundation (10), construction modules (20) are continuously arranged in parallel on the upper surface of the foundation (10).

Prior to installing the foundation (10), ground reinforcement may be performed depending on the soil condition. Of course, if an underground structure is installed, the construction module (20) is installed on the upper surface of the underground structure.

The base (10) must also be provided with a tension body hole (141) for future tension body (140) installation.

As the construction modules (20) for the relevant floor are arranged, as shown in Fig. 7, adjacent construction modules (20) are simultaneously connected as one using a connecting plate (120).

The connection of the two-sided building modules (20) by the connecting plate (120) is accomplished by inserting and fixing the guide pin (130) into the guide pin hole (111) provided in the two-sided fixing plates (110) as described above, and installing the connecting plate (120) on the upper surface of the fixing plate (110) so that the guide pin (130) is inserted into the guide pin hole (121) provided in the connecting plate (120).

b) Step of placing a shear wall module (30);

When the installation of the building module (20) for one floor of the modular building (1) to be constructed is completed, shear wall modules (30) are installed on both the left and right sides thereof, as shown in Fig. 8.

c) Step of connecting the building module (20) and the shear wall module (30);

The connection between the building module (20) and the shear wall module (30) is made by pressing the outer surface of the shear column part (31) of the shear wall module (30) against the outer surface of the column (22) of the building module (20), then inserting and fixing a guide pin (130) into the guide pin hole (111) of each fixed plate (110) in the same manner as the connection method between the building modules (20) described above, and installing the connecting plate (120) on the upper surface of the fixed plate (110) while ensuring that the guide pin (130) is inserted into the guide pin hole (121) provided in the connecting plate (120).

Figure 9 illustrates a state in which a column (22) of a building module (20) and a shear column part (31) of a shear wall module (30) are connected by a connecting plate (120).

With this, the installation of the building module (20) and shear wall module (30) for one floor of the modular building (1) to be constructed is completed.

d) A step of repeating each step of installing the building module (20) and the shear wall module (30) and connecting them to complete the installation of the building module (20) and the shear wall module (30) up to the top floor;

When the installation work of the building module (20) and the shear wall module (30) is completed and the construction of the lower part is completed, steps a) to c) are repeated on the upper part of the building module (20) of the lower part to complete the installation of the building module (20) and the shear wall module (30) up to the uppermost part.

Figure 10 illustrates a state in which the installation of the building module (20) and the shear wall module (30) to the top floor of the modular building (1) to be constructed by this step is complete.

e) A step of installing a roof module (40) and integrating the building module (20) and shear wall module (30) of the entire floor to complete a modular building (1);

After the roof module (40) is installed on top of the top-floor building module (20) and the shear wall module (30), the entire modular building (1) is integrated with the foundation (10) using a tension member (140). Accordingly, a tension member hole (141) penetrating the top and bottom must also be formed in the roof module (40).

The above integration is achieved by inserting a tension member (140) into each tension member hole (141) from the foundation (10) to the roof module (40), fixing one end of the tension member (140) to the foundation (10), pulling the tension member (140) from the upper portion of the roof module (40) so that tensile stress is generated in the tension member (140), and then fixing and securing an end of the tension member (140) using a fixing means.

Figure 11 illustrates the state in which the modular building (1) is completed by this step.

Although the present invention has been described in detail above with reference to specific embodiments, the embodiments are merely examples to facilitate understanding of the present invention. Therefore, it is obvious that those skilled in the art will be able to implement the present invention by modifying it in various ways within the scope of the technical idea of the present invention. Accordingly, such modified examples will be considered to fall within the scope of the rights of the present invention as set forth in the claims.

1; Modular Building 10; Foundation
20; Building module 21; Floor slab
22; Column 23; Ceiling slab
30; Shear wall module 31; Shear column section
32; Shear wall 33; Shear beam
40; roof module 51; balcony slab
52; wing wall 110; fixed plate
111,121; Guide pin hole 112,122; Tension body penetration hole
120; connecting plate 130; guide pin
140; Tension body 141; Tension body hole

Claims (7)

A precast shear wall module (30) of a reinforced concrete structure is installed on the left and right sides of a modular building (1) in which a plurality of skeletal building modules (20) composed of a pillar (22), a floor slab (21), and a ceiling slab (23) are sequentially assembled.
The above shear wall module (30) is
Shear wall (32) and
A shear column part (31) formed integrally with the above shear wall part (32),
A shear reinforcement structure for a modular building characterized by comprising a shear beam section (33) formed at the upper and lower portions of a shear wall section (32) and connected to the shear column section (31). delete In the first paragraph,
The above shear column part (31) is formed to protrude inwardly from the shear wall part (32) and is a shear reinforcement structure for a modular building characterized in that it is configured with the same spacing and number as each column (22) located on the side of the building module (20). In the first paragraph,
A shear reinforcement structure for a modular building, characterized in that at least the shear column (31) among the above shear column portion (31) and the shear wall portion (32) has a tensile hole (141) formed through the upper and lower portions. In the first paragraph,
The shear column section (31) of the shear wall section (32) and the column (22) of the building module (20) are each provided with a fixed plate (110) having a guide pin hole (111) installed on each upper and lower surface.
A shear reinforcement structure for a modular building, characterized in that the connection between the above shear column part (31) and the column (22) in contact therewith is achieved by inserting and fixing a guide pin (130) into the guide pin hole (111) of each fixing plate (110) of the shear column part (31) and the column (22), and installing a connecting plate (120) provided with a guide pin hole (121) into which each of the above guide pins (130) is inserted, on the upper surface of each of the fixing plates (110) of the shear column part (31) and the column (22). In the first paragraph,
A wing wall (52) is additionally provided in front of one of the outer columns (22) located at the front of the building module (20).
A shear reinforcement structure for a modular building, characterized in that the shear wall portion (32) of the shear wall module (30) is configured in a shape in which the leading end surrounds the wing wall (52). A method for constructing a modular building (1) using a shear reinforcement structure according to any one of clauses 1, 3 to 6,
a) Step of installing a construction module (20);
b) Step of placing a shear wall module (30);
c) Step of connecting the building module (20) and the shear wall module (30);
d) A step of repeating steps a) to c) above the lower-level building module (20) to complete the installation of the building module (20) and shear wall module (30) up to the uppermost floor;
e) A method for constructing a modular building, characterized in that the steps of installing a roof module (40) and integrating the building module (20) and shear wall module (30) of the entire floor to complete the modular building (1) are sequentially performed.

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