KR20240030383A - Connector for modular unit with joint device - Google Patents

Abstract

In the present invention, in order to join vertical members and horizontal members in a modular unit, horizontal member connection parts and vertical member connection parts are provided on the side, top, or bottom of the concrete body block, respectively, to ensure sufficient structural performance and assembly with other members. This is a connector for a modular unit that has excellent properties, does not require separate fire resistance treatment, and is equipped with a joint that allows for economical construction.
The present invention is for joining vertical members and horizontal members in a modular unit consisting of vertical members provided at four corners to be spaced apart from each other and horizontal members connecting the top and bottom of neighboring vertical members, respectively, and is formed of concrete. body block; Horizontal member connecting portions extending from the main body block and integrally protruding from at least two sides of the main body block to connect the horizontal members; A vertical member connecting portion extending from the main body block and integrally protruding from the upper or lower part of the main body block to join the vertical members; A joint including a plurality of bolt couplers embedded in each side of the vertical member connection portion so that coupling bolts for fixing the vertical member to the vertical member connection portion are fastened; and a plurality of vertical fixing bars provided in a vertical direction and embedded within the main body block. It is characterized by being composed of.

Description

Connector for modular unit with joint device {Connector for modular unit with joint device}

The present invention is to connect vertical members and horizontal members in a modular unit, and the horizontal member connection part and the vertical member connection part are provided integrally on the side and upper or lower part of the concrete body block, respectively, and a bolt coupler for fastening the coupling bolt to the vertical member connection part. This is about a connector for a modular unit equipped with a joint that includes a buried joint, ensures sufficient structural performance while being excellent in assembly with other members, does not require separate fire resistance treatment, and allows economical construction. .

Unlike the RC method, which constructs each member on-site, or the PC method, which assembles individual members pre-fabricated in a factory on-site, modular construction involves stacking modular units, all of which are pre-fabricated in a box-like shape, on site, up, down, left, and right. It is a completed structural system.

In this modular system, most of the installation process, including not only the structural frame but also various interior and exterior materials, mechanical equipment, and electrical wiring, is carried out at the factory. Therefore, it is possible to secure excellent and homogeneous quality, and the construction period can be greatly shortened by minimizing field processes.

The modular unit that makes up the modular system is usually provided with vertical members at each corner, and the top and bottom of the vertical members are connected by horizontal members to form a rectangular parallelepiped.

Conventionally, modular units were manufactured in factories by mainly joining each member by welding (Patent Nos. 10-0923637, 10-1031299, etc.).

However, the joining method by welding has the risk of quality deterioration such as thermal deformation. In addition, the joint between the vertical member and the horizontal member has a short and complicated welding area, which limits automated production and reduces productivity. In addition, disassembly is cumbersome and recycling of materials is difficult because the members must be cut for maintenance and repair.

Registered Patent No. 10-1628092 uses steel corner blocks to join columns and beam members. However, the above technology also has low productivity because it welds column and beam members to corner blocks. In addition, since steel blocks are manufactured by casting, the manufacturing cost is high, a large amount of steel is required, which reduces economic efficiency, and there is the inconvenience of having to separately fireproof treatment.

In order to solve the above problems, the present invention is for joining vertical members and horizontal members in a modular unit. It secures sufficient structural performance, has excellent assembly with other members, does not require separate fire resistance treatment, and is economical. We would like to provide a connector for a modular unit equipped with a joint that allows for easy installation.

The present invention according to a preferred embodiment is a modular unit consisting of a vertical member provided at the four corners to be spaced apart from each other and a horizontal member connecting the top and bottom of the adjacent vertical member, respectively, for joining the vertical member and the horizontal member. Pertaining to a connector for a modular unit, comprising: a main body block formed of concrete; Horizontal member connecting portions extending from the main body block and integrally protruding from at least two sides of the main body block to connect the horizontal members; A vertical member connection part extending from the main body block and integrally protruding from the upper or lower part of the main body block to connect the vertical members; A joint including a plurality of bolt couplers embedded in each side of the vertical member connection portion so that coupling bolts for fixing the vertical member to the vertical member connection portion are fastened; and a plurality of vertical fixing bars provided in a vertical direction and embedded within the main body block. Provides a connector for a modular unit equipped with a joint, characterized in that it consists of.

The present invention according to another preferred embodiment provides a connector for a modular unit provided with a joint, wherein the inner ends of the plurality of bolt couplers are connected to each other to form a single body.

The present invention according to another preferred embodiment is a connector for a modular unit equipped with a joint, wherein the joint is integrally provided with a bolt coupler and further includes a plurality of bar couplers to which one end of the vertical fixing bar is screwed. provides.

The present invention according to another preferred embodiment is a modular unit equipped with a joint, characterized in that insert nuts to which coupling bolts for fastening the horizontal member to the horizontal member connection are embedded in the upper and lower surfaces of the horizontal member connection, respectively. Connectors are provided.

The present invention according to another preferred embodiment provides a connector for a modular unit equipped with a joint, characterized in that the interior of the main body block is provided with a horizontal fixing bar extending into the interior of the horizontal member connection portion.

According to the present invention, it is provided at each corner of the modular unit to join the ends of the vertical member and the horizontal member, and the horizontal member connection part for joining the horizontal member and the vertical member for joining the vertical member are respectively located on the side and upper or lower part of the concrete body block. It is possible to provide a connector for a modular unit in which a member connection part is integrally provided, and a joint including a bolt coupler for fastening a coupling bolt is embedded in the vertical member connection part.

In particular, since the main body block, horizontal member connection part, and vertical member connection part can be manufactured as one piece using a plastic mold, manufacturing is easier than existing steel blocks and manufacturing costs can be significantly reduced. In addition, there is no need for separate fire resistance treatment and no welding process is required when assembling vertical and horizontal members, so constructability is excellent.

In addition, a vertical fixing bar is provided in the vertical direction inside the main body block to directly transfer the stress caused by the load of the horizontal member to the vertical member, thereby ensuring sufficient structural performance.

1 is a perspective view showing a modular unit.
Figure 2 is a perspective view showing a connector for a modular unit.
Figure 3 is a perspective view showing the interior of a connector for a modular unit.
Figure 4 is a perspective view showing the coupling relationship between a connector and a vertical member and a horizontal member.
Figure 5 is a perspective view showing a coupled state of a vertical member and a horizontal member by a connector.
Figure 6 is a perspective view showing a junction hole.
Fig. 7 is a plan view showing a joint hole.
Figure 8 is a diagram showing the concept of stress transfer by a strut tie model.

Hereinafter, the present invention will be described in detail according to the accompanying drawings and preferred embodiments.

FIG. 1 is a perspective view showing a modular unit, FIG. 2 is a perspective view showing a connector for a modular unit, and FIG. 3 is a perspective view showing the inside of a connector for a modular unit. And Figure 4 is a perspective view showing the coupling relationship between the connector and the vertical member and the horizontal member, and Figure 5 is a perspective view showing the coupling state of the vertical member and the horizontal member by the connector.

As shown in Figures 1 to 5, the connector for a modular unit equipped with the joint of the present invention is provided between the vertical members 2 spaced apart from each other at the four corners and the upper and lower ends of the adjacent vertical members 2. A main body block (41) made of concrete for joining the vertical member (2) and the horizontal member (3) in a modular unit (1) composed of horizontal members (3) connecting each other; Horizontal member connecting portions 42 extending from the main body block 41 and integrally protruding from at least two sides of the main body block 41 to join the horizontal members 3; A vertical member connecting portion 43 extending from the main body block 41 and integrally protruding from the upper or lower part of the main body block 41 to join the vertical member 2; A joint comprising a plurality of bolt couplers 441 embedded in each side of the vertical member connecting portion 43 so that the coupling bolt 5 for fixing the vertical member 2 to the vertical member connecting portion 43 is fastened. (44); and a plurality of vertical fixing bars (45) provided in a vertical direction and embedded within the main body block (41); It is characterized by being composed of.

The present invention is for joining the vertical member (2) and the horizontal member (3) in the modular unit (1). It secures sufficient structural performance, has excellent assembly with other members, and does not require separate fire resistance treatment. The purpose is to provide a connector for a modular unit equipped with a joint that allows for economical construction.

The present invention is for joining the vertical member (2) and the horizontal member (3) in the modular unit (1).

The modular unit (1) can be used in various types of buildings such as residential houses, school facilities, various lodging facilities, officetels, temporary disaster facilities, and rooftop structures.

The modular unit (1) is composed of four vertical members (2) provided at each of the four corners and a horizontal member (3) that connects the upper and lower ends of the neighboring vertical members (2), and has an overall rectangular parallelepiped shape. .

A connector 4 is provided at each corner of the modular unit 1 so that the ends of the vertical member 2 and the horizontal member 3 are joined.

The connector 4 includes a main body block 41, a horizontal member connection part 42, a vertical member connection part 43, a joint 44, and a vertical fixing bar 45 (FIGS. 2 and 3). .

The main body block 41, the horizontal member connecting portion 42, and the vertical member connecting portion 43 are formed of concrete blocks integrated with each other.

In particular, when concrete blocks are manufactured from high-performance concrete (HPC), which has high strength, high durability, and high fluidity, not only compressive strength but also tensile strength are significantly superior to ordinary concrete, resulting in excellent structural performance. In addition, it has good fluidity and excellent moldability.

Here, high-performance concrete includes ultra-high-performance concrete (UHPC), and ultra-high-performance concrete with a compressive strength of 90 MPa or more and a tensile strength of 6 MPa or more can be used.

The connector 4 can be manufactured using a plastic mold. As a result, it is easier to manufacture than existing steel blocks, and manufacturing costs can be significantly reduced. In addition, there is no need for separate fire resistance treatment, and no welding process is required when assembling the vertical member (2) and horizontal member (3), making construction convenient.

The body block 41 may be formed in a rectangular parallelepiped shape.

The horizontal member connecting portion 42 is formed to protrude integrally with the main body block 41 on two or more sides of the main body block 41 .

When the connector 4 is placed at each corner of the modular unit 1, a vertical member 2 is joined to the top or bottom of each connector 4, and a horizontal member 3 is attached to two orthogonal sides. It is joined.

Accordingly, the horizontal member connecting portions 42 may be formed to protrude in directions perpendicular to each other on the plane of the connector 4.

If the connector 4 is installed in the middle of the modular unit 1 depending on the size of the modular unit 1, an intermediate horizontal member (not shown) may be coupled to the horizontal member 3. In this case, in order to connect the intermediate horizontal members, the main body block 41 may be provided with three horizontal member connection parts 42 in a T-shape in plan.

In order to couple the horizontal member 3 to the horizontal member connecting portion 42, the horizontal member connecting portion 42 may be formed in a shape corresponding to the inner cross-section of the horizontal member 3. And the horizontal member connecting portion 42 can be inserted and joined to the inside of the end of the horizontal member 3.

For example, when the horizontal member 3 is a C-shaped steel, the horizontal member connecting portion 42 has the upper and lower surfaces and outer surfaces of the horizontal member 3 formed in the same shape as the upper and lower flanges and the inner surface of the web, so that they are in close contact with each other. Can be combined.

The vertical member connecting portion 43 extends from the main body block 41 and protrudes integrally from the upper or lower part of the main body block 41.

The vertical member connecting portion 43 is a portion that protrudes from the upper or lower portion of the main body block 41 and is joined to the vertical member 2.

The vertical member connecting portion 43 can be formed into a shape corresponding to the inside cross section of the vertical member 2 and inserted into the inside of the end of the vertical member 2.

For example, when the vertical member 2 is a square pipe, the inner edge of the vertical member 2 may be rounded (Figure 4). Accordingly, the vertical member connecting portion 43 can also be configured to be easily inserted into the interior of the vertical member 2 by chamfering the edges.

Since the vertical member 2 is joined to the upper part of the connector 4 located at the lower part of the modular unit 1, the vertical member connecting portion 43 is provided at the upper part of the main body block 41. And since the vertical member 2 is joined to the lower part of the connector 4 located at the upper part of the modular unit 1, the vertical member connecting portion 43 is provided at the lower part of the main body block 41.

The joint 44 is a plurality of bolt couplers 441 embedded in each side of the vertical member connection portion 43 so that the coupling bolts 5 for fixing the vertical member 2 to the vertical member connection portion 43 are fastened. ) and consists of

The joint 44 is embedded and installed inside the vertical member connecting portion 43.

The coupling bolt 5 is fastened to the bolt coupler 441 constituting the joint 44 to secure the vertical member 2 to the vertical member connecting portion 43.

If the vertical member 2 is a square pipe with a square cross-section, and the vertical member connecting portion 43 also has a square cross-section, a total of four bolt couplers 441 may be provided on each side of the vertical member connecting portion 43. there is. At this time, the front of each bolt coupler 441 may be configured to be exposed to the side of the vertical member connection portion 43.

Female threads may be formed on the inner peripheral surface of the bolt coupler 441.

In addition, a through hole (H) may be formed in the vertical member (2) at a position corresponding to the bolt coupler (441).

Therefore, with the vertical member connecting portion 43 inserted into the end of the vertical member 2, the coupling bolt 5 is inserted through the through hole H and fastened to the bolt coupler 441, thereby forming the vertical member 2. ) can be fixed to the vertical member connection part 43.

The vertical fixing bar 45 is provided and embedded in the vertical direction inside the main body block 41 (FIG. 3).

Inside the main body block 41, a plurality of vertical fixing bars 45 may be arranged in the vertical direction to directly transfer the stress caused by the load of the horizontal member 3 to the vertical member 2.

The vertical fixing bar 45 transmits the stress transmitted to the horizontal member connecting portion 42 by the load of the horizontal member 3 to the vertical member 2.

A head portion 451 with an enlarged cross-section may be formed on the upper part of the vertical fixing bar 45 so that the vertical fixing bar 45 is stably fixed inside the main body block 41.

Figure 6 is a perspective view showing the joint, and Figure 7 is a plan view showing the joint.

As shown in FIGS. 6 and 7, the inner ends of the plurality of bolt couplers 441 may be connected to each other to form a single piece.

When manufacturing the connector 4, in order to stably fix the position of each bolt coupler 441, the plurality of bolt couplers 441 may be formed as one piece by connecting their inner ends.

In this way, when the plurality of bolt couplers 441 are integrated, when stress is transmitted by each coupling bolt 5, the stress can be evenly distributed across the entire cross section of the vertical member connecting portion 43.

Additionally, since the plurality of bolt couplers 441 are integrated, the rigidity of the joint 44 is greatly increased.

If the vertical member connecting portion 43 has a square cross-section and is provided with a total of four bolt couplers 441, one for each side, the inner ends of each bolt coupler 441 may be connected to each other to form a + shape.

As shown in FIGS. 6 and 7, the joint 44 is provided integrally with the bolt coupler 441 and further includes a plurality of bar couplers 442 to which one end of the vertical fixing bar 45 is screwed. It can be configured to include.

One end of the vertical fixing bar 45 can be fixed to the joint 44 so that the stress caused by the horizontal member 3 is directly transmitted to the vertical member 2 through the vertical fixing bar 45.

For this purpose, the joint 44 may be provided with a bar coupler 442 integrally extending from the bolt coupler 441.

At this time, a female thread is formed on the inner peripheral surface of the bar coupler 442 and a thread is formed on the outer peripheral surface of the end of the vertical fixing bar 45, so that the end of the vertical fixing bar 45 can be screwed to the bar coupler 442. there is.

When the vertical fixing bar 45 is fixed to the joint 44, the position of the vertical fixing bar 45 can be fixed when manufacturing the connector 4, making manufacturing convenient.

The bar coupler 442 may be protruding above or below the bolt coupler 441.

When the vertical fixing bar 45 is located outside the bolt coupler 441, the bar coupler 442 extends from the side of the bolt coupler 441 to form an L shape and is vertically fixed to the bar coupler 442. Bars 45 can be combined.

Accordingly, the vertical fixing bar 45 can be fixedly coupled to the joint 44 to directly transmit stress, and the vertical fixing bar 45 securely secures the joint 44 inside the vertical member connection portion 43. You can settle down.

As shown in FIGS. 4 and 5, the upper and lower surfaces of the horizontal member connecting portion 42 are provided with insert nuts 46 to which coupling bolts 5 are fastened to secure the horizontal member 3 to the horizontal member connecting portion 42. ) can each be buried.

In order to fix the horizontal member 3 to the horizontal member connecting portion 42, an insert nut 46 may be embedded in the horizontal member connecting portion 42.

In order to transmit the bending of the horizontal member 3 to the horizontal member connecting portion 42, insert nuts 46 may be embedded and installed on the upper and lower surfaces of the horizontal member connecting portion 42, respectively.

At this time, through holes (H) may be formed in the upper and lower flanges of the horizontal member (3) at positions corresponding to the insert nuts (46), respectively.

Therefore, with the horizontal member connecting portion 42 inserted into the end of the horizontal member 3, the coupling bolt 5 is inserted through the through hole H and fastened to the insert nut 46, thereby forming the horizontal member 3 ) can be fixed to the horizontal member connection part 42.

Since the insert nut 46 is pre-embedded in the horizontal member connecting portion 42, the coupling bolt 5 can be easily fastened in one direction.

Figure 8 is a diagram showing the concept of stress transfer by a strut tie model.

As shown in FIGS. 3 and 8, a horizontal fixing bar 47 extending into the interior of the horizontal member connecting portion 42 may be provided inside the main body block 41.

The horizontal member connecting portion 42 protruding from the main body block 41 is a member with a large swing compared to its length, and can be designed using a strut tie model.

The strut tie model is a reasonable design method for concrete members with complex stress flows due to their geometric shapes.

Accordingly, the horizontal member connection portion 42 is provided with a downwardly inclined strut (S: strut) that transmits compressive stress to the vertical load acting on the horizontal member 3 and is provided in the horizontal direction toward the main body block 41 from the top to provide tension. It can be modeled as a tie (T: tie) that transmits stress.

Since the main body block 41 and the horizontal member connection part 42 can be formed of high-performance concrete with very high compressive strength, the concrete itself can sufficiently function as a strut.

However, even though the tensile strength of high-performance concrete is much greater than that of ordinary concrete, the tie part requires separate tension members.

For this purpose, a horizontal fixing bar 47 that serves as a tie can be placed inside the main body block 41.

The horizontal fixing bar 47 may be provided to cross the main body block 41 and the horizontal member connecting portion 42.

Since the direction of the load acting on the horizontal member connecting portion 42 of the connectors 4 located at the upper and lower portions acts in opposite directions, the horizontal fixing bar 47 is formed as a pair at the upper and lower portions of the horizontal member connecting portion 42. It can be configured to support tensile stress no matter which direction the load is applied.

The horizontal anchoring bar 47 can be formed as a closed hoop to be stably anchored inside the main body block 41. Accordingly, the horizontal anchoring bar 47 restrains the concrete inside, so a confinement effect can be expected, and the ties can be configured in two rows.

In this case, the vertical fixing bar 45 can be configured to penetrate the horizontal fixing bar 47 so that the stress of the horizontal member 3 can be more smoothly transmitted to the vertical member 2.

1: Modular unit
2: Vertical member
3: Horizontal member
4: connector
41: Body block
42: Horizontal member connection part
43: Vertical member connection part
44: junction
441: Bolt coupler
442: Bar coupler
45: Vertical fixation bar
451: Head part
46: Insert nut
47: Horizontal fixing bar
5: Combining bolt
H: Through hole

Claims (5)

In a modular unit (1) consisting of a vertical member (2) provided at the four corners to be spaced apart from each other and a horizontal member (3) connecting the upper and lower ends of the adjacent vertical members (2), the vertical member (2) It relates to a connector (4) for a modular unit for joining a horizontal member (3),
Body block 41 made of concrete;
Horizontal member connecting portions 42 extending from the main body block 41 and integrally protruding from at least two sides of the main body block 41 to join the horizontal members 3;
A vertical member connecting portion 43 extending from the main body block 41 and integrally protruding from the upper or lower part of the main body block 41 to join the vertical member 2;
A joint comprising a plurality of bolt couplers 441 embedded in each side of the vertical member connecting portion 43 so that the coupling bolt 5 for fixing the vertical member 2 to the vertical member connecting portion 43 is fastened. (44); and
A plurality of vertical fixing bars (45) provided in a vertical direction and embedded within the main body block (41); A connector for a modular unit equipped with a joint, characterized in that it consists of.
In paragraph 1:
A connector for a modular unit with a joint, characterized in that the inner ends of the plurality of bolt couplers 441 are connected to each other to form a single body.
In paragraph 2,
The coupler 44 is provided integrally with the bolt coupler 441 and further includes a plurality of bar couplers 442 to which one end of the vertical fixing bar 45 is screwed. Connector for modular units.
In paragraph 1:
A joint characterized in that the insert nuts 46 to which the coupling bolts 5 for fixing the horizontal member 3 to the horizontal member connection 42 are fastened are respectively embedded in the upper and lower surfaces of the horizontal member connecting portion 42. Connector for modular units equipped with .
In paragraph 1:
A connector for a modular unit with a joint, characterized in that the interior of the main body block (41) is provided with a horizontal fixing bar (47) extending into the interior of the horizontal member connecting portion (42).

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