KR102621721B1 - Joint System for Precast Concrete Modualr Structure And Precast Concrete Modualr Structure Using the Same - Google Patents

Abstract

The present invention relates to a precast concrete modular structure joining device that can implement modular structures of various structures by firmly and easily joining a plurality of U-type PC modules and/or flat slab PC modules to each other, and a precast concrete modular structure using the same. Regarding this, a precast concrete modular structure according to one form of the present invention includes a plurality of U-shaped PC modules made of U-shaped precast concrete (PC) with an open upper surface and stacked up and down; A first joining device for joining the upper end of the wall of the U-shaped PC module disposed on the lower side and the lower end of the wall of the U-shaped PC module disposed on the upper side; A slab PC module made of flat precast concrete (PC), with both ends connecting and closing the upper ends of the walls on both sides of the U-shaped PC module or the upper ends of the walls of a plurality of laterally spaced U-shaped PC modules; And, a second joining device for joining the upper end of the wall of the U-type PC module and the end of the slab PC module.

Description

Joint system for precast concrete modular structure and precast concrete modular structure using the same {Joint System for Precast Concrete Modualr Structure And Precast Concrete Modualr Structure Using the Same}

The present invention relates to a modular structure for construction, and more specifically, to a U-shaped outer module made of precast concrete (PC) and/or a flat slab module (upper and lower). and/or a joining device for precast concrete modular structures that are stacked and connected left and right, and a precast concrete modular structure using the same.

Domestic construction sites need to respond to changes in the construction industry, such as a shortage of skilled workers and shortened working hours. These changes require the development of technologies such as modular structures and require technological development in accordance with social changes.

Although Korea has excellent concrete production and technological capabilities, there have been almost no cases of its use as industrialized housing since 2000. In addition, the recognition standards for industrialized housing were initially established for concrete, but 30 years later, the number of recognition cases is zero, and the related industry has declined.

Currently, modular apartment houses are supplied with steel structures, and a total of 70 households have been supplied in two complexes. However, the construction cost is about 130% compared to existing apartment complexes, and the current pre-fabrication rate remains at 50%, which is an obstacle to modular advantages and supply expansion. In other words, steel has advantages such as joining between modules and ease of manufacturing, but the cost aspect and low pre-production ratio are problems.

In order to solve this problem, Republic of Korea Patent No. 10-2099933 includes a plate-shaped slab structure made of precast concrete forming the floor, and side wall structures formed vertically at both ends of the slab structure, upper and lower. At least one external module that can be stacked; an in-fill module that has a size corresponding to the space formed by the slab structure and the side wall structure of the external module and is inserted and installed inside the space; And, when a plurality of external modules are stacked vertically, a plurality of module joining units that fixedly connect the upper end of the side wall structure of the external module and the lower ends of both ends of other external modules stacked on the upper side. A precast concrete modular structure and its construction method are disclosed.

However, since the above-described conventional precast concrete modular structure is a combination of a plurality of modular units, overlapping of structural members constituting the unit units may occur, which has the disadvantage of wasting materials and inefficient use of space. .

For example, when U-type PC modules 10, which are unit units of a modular structure, are horizontally arranged laterally as shown in FIG. 1, the intermediate walls 11 between the U-type PC modules 10 unit units overlap. do.

In this way, PC modular structures are constructed on site by integrating the structural members of the unit unit, such as columns, beams, walls, and slabs, for reasons such as pre-assembly ratio (prefabrication ratio). In the case of a U-shaped wall modular structure, the middle wall overlaps when horizontally joined, and in the case of a steel module made of columns and beams, the lower beam and column overlap when vertically and horizontally joined, resulting in inefficiency of the constituent materials.

Republic of Korea Patent No. 10-2099933 Japanese Patent No. 2634381 Japanese Patent Laid-Open No. 2000-273997 US registered patent US 4,781,006

Design and safety review of precast concrete modules for construction, Journal of the Korean Society of Spatial Structures, v.20 no.3, 2020, pp.35 - 42 Lee Sang-seop, Park Geum-seong

The present invention is intended to solve the above-mentioned conventional problems. The purpose of the present invention is to minimize the overlap between members of the U-type PC module when implementing a modular structure by applying the U-type PC module, and to minimize the overlap between the members of the U-type PC module. The present invention provides a precast concrete modular structure joining device that can implement modular structures of various structures by firmly and easily joining PC modules and/or flat slab PC modules to each other, and a precast concrete modular structure using the same.

To achieve the above object, the joining device for precast concrete modular structures according to the present invention is a precast concrete modular structure stacking and joining a plurality of U-shaped PC modules made of U-shaped precast concrete (PC) with an open upper surface vertically. A joining device for a cast concrete modular structure, comprising: a first coupling bracket installed adjacent to the outer surface of the lower end of the wall of the upper U-type PC module and the upper outer surface of the wall of the lower U-type PC module; A first joining rod extending upward from the inside of the upper end of the wall of the lower U-type PC module and inserted into the lower part of the wall of the upper U-type PC module; A first upper fastening member integrally connected to the inner side of the lower end of the wall of the upper U-type PC module and penetrating the first connecting rod and the first coupling bracket; And, a first lower fastening member integrally connected to the inner surface of the upper end of the wall of the lower U-shaped PC module and the first connecting rod and the first coupling bracket.

A joining device for a precast concrete modular structure according to another form of the present invention is installed in close contact with the inner surface of the lower end of the wall of the upper U-type PC module, and the first upper fastening member penetrates and is connected. Additional connection brackets may be included.

A joining device for a precast concrete modular structure according to another form of the present invention is installed in close contact with the inner surface of the upper end of the wall of the lower U-shaped PC module, and the first lower fastening member penetrates and connects. It may further include a lower connection bracket.

The first coupling bracket includes a vertical support portion in contact with the outer surface of the lower end of the wall of the upper U-type PC module and the upper outer surface of the wall of the lower U-type PC module, and a ground portion in the middle of the vertical support portion. ) and includes a horizontal support part that is installed horizontally and stacked between the lower end of the wall of the upper U-type PC module and the upper end of the wall of the lower U-shaped PC module, wherein the plurality of first connection rods have their upper portions aligned with the first It can be inserted and coupled through the horizontal support part of the coupling bracket and into the lower part of the wall of the upper U-shaped PC module.

A joining device for precast concrete modular structures according to another form of the present invention includes a wall of one or more U-shaped PC modules made of U-shaped precast concrete (PC) with an open upper surface, and a flat precast structure. It is a joining device for precast concrete modular structures that joins the ends of slab PC modules made of cast concrete (PC) to each other. It is installed at the end of the slab PC module and is seated on the upper part of the wall of the U-type PC module, and is attached to the upper part of the wall. A second coupling bracket connected to the side; a second coupling rod extending upward from the inside of the upper wall of the U-type PC module and penetrating the second coupling bracket; It may include a second lower fastening member that connects the upper inner surface of the wall of the U-type PC module while penetrating the second connecting rod and the second coupling bracket.

A joining device for a precast concrete modular structure according to another form of the present invention is installed in close contact with the inner surface of the upper end of the wall of the U-shaped PC module, and is integrally connected while the second lower fastening member penetrates. 2It may further include a lower connection bracket.

The upper part of the second coupling rod may be inserted into the lower part of the wall of another U-type PC module stacked on the upper side of the U-type PC module through the second coupling bracket.

A joining device for precast concrete modular structures according to another form of the present invention includes a second upper connection bracket and a third upper connection bracket installed in close contact with each of the inner and outer surfaces of the lower end of the wall of the U-shaped PC module stacked on the upper side. Upper connection bracket; And, a second upper fastening member penetrating the second upper connecting bracket, the second connecting rod, and the third upper connecting bracket and integrally joining the lower end of the wall of the U-type PC module stacked on the upper side. there is.

The second coupling bracket may be fixed to the end of the slab PC module by a plurality of fixing bars embedded inside the slab PC module.

The second coupling bracket may include a fixing part fixed to one end of the slab PC module, and a wall support part formed at the end of the fixing part and seated on the upper end of the wall of the U-type PC module.

A precast concrete modular structure according to one form of the present invention includes a plurality of U-shaped PC modules made of U-shaped precast concrete (PC) with an open upper surface and stacked up and down; A first joining device for joining the upper end of the wall of the U-shaped PC module disposed on the lower side and the lower end of the wall of the U-shaped PC module disposed on the upper side; A slab PC module made of flat precast concrete (PC), with both ends connecting and closing the upper ends of the walls on both sides of the U-shaped PC module or the upper ends of the walls of a plurality of laterally spaced U-shaped PC modules; And, a second joining device for joining the upper end of the wall of the U-type PC module and the end of the slab PC module.

The first joining device includes: a first coupling bracket installed in contact with the outer surface of the lower end of the wall of the upper U-type PC module and the upper outer surface of the wall of the lower U-type PC module; A first joining rod extending upward from the inside of the upper end of the wall of the lower U-type PC module and inserted into the lower part of the wall of the upper U-type PC module; A first upper connection bracket installed in close contact with the lower inner surface of the wall of the upper U-shaped PC module; A first lower connection bracket installed in close contact with the upper inner surface of the wall of the lower U-shaped PC module; A first upper fastening member penetrating the first upper connecting bracket, the upper part of the first connecting rod, and the upper part of the first coupling bracket, and integrally joined to the lower end of the wall of the upper U-shaped PC module; And, a first lower fastening member penetrating the first lower connection bracket, the lower part of the first connecting rod, and the lower part of the first coupling bracket, and integrally joined to the upper part of the wall of the lower U-shaped PC module; may include.

The second coupling device includes a second coupling bracket installed at the end of the slab PC module, seated on the upper end of the wall of the U-type PC module, and connected to the outer surface of the upper end of the wall; A second joining rod extending upward from the inside of the upper part of the wall of the U-type PC module, penetrating the second coupling bracket, and being inserted into the lower part of the wall of another U-type PC module stacked on the upper side of the U-type PC module; a second lower connection bracket that is installed in close contact with the upper inner surface of the wall of the U-type PC module and is integrally connected with the second lower fastening member penetrating therethrough; A second upper connection bracket and a third upper connection bracket installed in close contact with each of the lower inner and outer surfaces of the wall of the U-shaped PC module stacked on the upper side; A second upper fastening member penetrating the second upper connecting bracket, the second connecting rod, and the third upper connecting bracket and integrally joined to the lower end of the wall of the upper U-shaped PC module; And, a second lower fastening member penetrating the second lower connection bracket, the lower part of the second connecting rod, and the lower part of the second coupling bracket and integrally joined to the upper part of the wall of the U-type PC module. You can.

The precast concrete modular structure according to the present invention connects the walls of a plurality of U-shaped PC modules stacked up and down using a joining rod configured in a joining device, or connects the walls of a plurality of U-shaped PC modules and both ends of the slab PC module. It can be connected firmly yet easily.

In addition, when building a modular structure by stacking multiple U-shaped PC modules vertically or arranging them laterally, slab PC modules can be used to prevent overlapping of members (e.g. walls) and enable diverse and efficient space utilization. A modular structure can be implemented.

In addition, there is an effect of increasing the space efficiency of modular structures by manufacturing the length of the slab PC module to the desired length.

Figure 1 is a perspective view showing a conventional precast concrete modular structure.
Figure 2 is a perspective view showing a precast concrete modular structure according to an embodiment of the present invention.
FIG. 3 is a perspective view showing a slab PC module constituting the precast concrete modular structure shown in FIG. 1.
FIG. 4 is a projection view showing the configuration of the first joining device constituting the precast concrete modular structure shown in FIG. 1.
Figure 5 is a cross-sectional view showing the first joining device shown in Figure 4.
FIG. 6 is a projection diagram showing the configuration of a second joining device constituting the precast concrete modular structure shown in FIG. 1.
FIG. 7 is a cross-sectional view showing a portion of the precast concrete modular structure shown in FIG. 1.
Figure 8 is a cross-sectional view of portion A of Figure 7.
FIGS. 9A to 9C are diagrams showing an example of constructing the precast concrete modular structure shown in FIG. 1.
Figure 10 is a perspective view showing a precast concrete modular structure according to another embodiment of the present invention.
FIG. 11 is a perspective view showing a portion of the precast concrete modular structure shown in FIG. 10.
FIG. 12 is a perspective view showing a slab PC module constituting the precast concrete modular structure shown in FIG. 10.
FIG. 13 is a projection view showing the configuration of the second joining device constituting the precast concrete modular structure shown in FIG. 10.
Figure 14 is a cross-sectional view showing the second joining device shown in Figure 13.

With reference to the attached drawings, a joining device for a precast concrete modular structure according to embodiments of the present invention and a precast concrete modular structure using the same will be described in detail. Since the present invention can be subject to various changes and can have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components. In the attached drawings, the dimensions of the structures are enlarged from the actual size for clarity of the present invention, or reduced from the actual size to understand the schematic configuration.

Additionally, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

1 to 9, the precast concrete modular structure according to an embodiment of the present invention is made of a plurality of U-shaped PC modules 10 stacked up and down, and a plurality of flat precast concrete (PC). A slab PC module (20) that connects and closes the upper end of the wall (11) of the U-type PC module (10), the upper end of the wall of the U-type PC module (10) disposed on the lower side, and a U-type PC disposed on the upper side. A first joining device 100 for joining the lower end of the wall 11 of the module 10, and a first joining device 100 for joining the upper part of the wall 11 of the U-type PC module 10 and the end of the slab PC module 20. 2Includes a joining device (200).

The U-shaped PC module 10 is made of U-shaped precast concrete (PC) with an open upper surface and walls 11 formed vertically upward at both ends of the lower surface 12.

The U-type PC module 10 may be stacked up and down and joined by the first joining device 100, or may be arranged to be spaced apart from each other by a certain distance in the lateral direction. The upper ends of the wall 11 of the plurality of U-shaped PC modules 10 arranged at a certain distance apart in the lateral direction may be connected and closed by the slab PC module 20 and the second joining device 200.

The slab PC module 20 is made of precast concrete (PC) having a rectangular flat shape, and as in this embodiment, the upper ends of the wall 11 of a plurality of U-shaped PC modules 10 spaced apart from each other by a certain distance are connected. It can be closed while doing so, but it can also be closed by connecting the upper ends of the walls (11) on both sides of the single U-shaped PC module (10).

As shown in Figures 4 and 5, the first coupling device 100 includes a first coupling bracket 110, a first coupling rod 120, a first upper fastening member 150, and a first lower fastening member. It includes a member 160, a first upper connection bracket 130, and a first lower connection bracket 140.

The first coupling bracket 110 is installed in contact with the outer surface of the lower end of the wall 11 of the upper U-type PC module 10 and the upper outer surface of the wall 11 of the lower U-type PC module 10. The first coupling bracket 110 is vertically in contact with the outer surface of the lower end of the wall 11 of the upper U-type PC module 10 and the upper outer surface of the wall 11 of the lower U-type PC module 10. The support part 111 and the vertical support part 111 are installed horizontally with respect to the ground in the middle of the lower part of the wall 11 of the upper U-type PC module 10 and the lower U-type PC module ( It may be made of a bracket with a cross-sectional shape of approximately 'A' shape including a horizontal support portion 112 stacked between the upper ends of the wall 11 of 10).

The horizontal support portion 112 is formed with a plurality of holes through which the first joining rod 120 individually passes.

The first upper connection bracket 130 and the first lower connection bracket 140 are each made of a bracket in the form of a square plate. The first upper connection bracket 130 is installed in close contact with the lower inner surface of the wall 11 of the upper U-type PC module 10, and the first lower connection bracket 140 is installed in close contact with the lower U-type PC module 10. ) is installed in close contact with the inner surface of the upper end of the wall 11. In addition, the first upper connection bracket 130 and the first lower connection bracket 140 are formed with a plurality of holes through which the first upper fastening member 150 and the first lower fastening member 160 pass and are fastened. .

The first coupling bracket 110 can be installed in close contact with the outer surface of the wall 11 of the U-type PC module 10. The first coupling bracket 110 is installed on the wall of the U-type PC module 10 ( 11), a groove with a thickness roughly matching the thickness of the first coupling bracket 110 is formed concavely on the outer surface of the wall 11 of the U-type PC module 10 so as to form the same surface without protruding from the outer surface of the U-type PC module 10. It can be. In addition, a groove having a thickness corresponding to the thickness of the first upper connection bracket 130 and the first lower connection bracket 140 is installed concavely on the inner surface of the wall 11 of the U-type PC module 10. The first upper connection bracket 130 and the first lower connection bracket 140 can be prevented from protruding outward while forming substantially the same surface as the surface of the wall 11 of the U-type PC module 10.

The first joining rod 120 extends upward from the inside of the upper end of the wall 11 of the lower U-type PC module 10 and is inserted into the lower end of the wall 11 of the upper U-type PC module 10. As such, the lower part of the first joining rod 120 is embedded and fixed inside the upper part of the wall 11 of the lower U-type PC module 10, and is attached to the upper part of the upper part of the wall 11 of the U-type PC module 10. extends vertically. The upper part of the first connecting rod 120 passes through the hole formed in the horizontal support part 112 of the first coupling bracket 110 and then is attached to the lower end of the wall 11 of the other U-type PC module 10 stacked on the upper side. It is inserted through the formed hole.

And the first joining rod 120 can be a square bar or circular bar, bar, frame, etc. having a certain length. Holes through which the first upper fastening member 150 and the first lower fastening member 160 pass horizontally are formed laterally at the upper and lower parts of the first connecting rod 120, respectively. The first joining rod 120 can be inserted into concrete and integrated with the concrete when manufacturing the U-type PC module 10 at a factory.

The first upper fastening member 150 is connected to the first upper connection bracket 130, the lower part of the wall 11 of the upper U-type PC module 10, the upper part of the first connecting rod 120, and the first coupling. It penetrates the upper part of the bracket 110 and is integrally connected. And the first lower fastening member 160 is connected to the first upper connection bracket 130, the upper part of the wall 11 of the lower U-shaped PC module 10, the lower part of the first connecting rod 120, and the first couple. It penetrates the lower part of the ring bracket (110) and is integrally connected. The first upper fastening member 150 and the first lower fastening member 160 can be constructed by applying bolts and nuts.

The first joining device 100 with this configuration can be constructed as follows.

By passing the hole formed in the horizontal support portion 112 of the first coupling bracket 110 through the first connecting rod 120 arranged on the upper end of one side wall 11 of the lower U-type PC module 10, 1. The coupling bracket 110 is seated on the upper end of one wall 11 of the lower U-type PC module 10.

And the first lower connection bracket 140 is brought into close contact with the upper inner surface of the wall 11 of the lower U-shaped PC module 10, and the first lower fastening member 160 is attached to the lower part of the first coupling bracket 110. The first coupling bracket 110 is fastened to the upper part of the wall 11 of the lower U-shaped PC module 10 by passing through the lower part of the first connecting rod 120 and the first lower connecting bracket 140. Fix it.

Next, another U-type PC module 10 is stacked on the upper side of the U-type PC module 10, and the lower end of one wall 11 of the U-type PC module 10 stacked on the upper side is connected to the first coupling bracket 110. ) is seated on the horizontal support part 112. At this time, the first connecting rod 120 is inserted into the hole formed at the lower end of one side wall 11 of the upper U-type PC module 10, and is connected to one side wall 11 of the lower U-type PC module 10 and the upper side. One wall 11 of the U-type PC module 10 is in a state where it can be joined to each other.

In this state, the first upper connecting bracket 130 is brought into close contact with the inner surface of the lower end of one side wall 11 of the upper U-type PC module 10, and the first upper fastening member 150 is connected to the first coupling bracket ( 110), the upper part of the first connecting rod 120, and the first upper connecting bracket 130 are passed through and fastened.

As a result, one wall 11 of the lower U-shaped PC module 10 and one wall 11 of the upper U-shaped PC module 10 are firmly joined to each other.

The first joining device 100 may be configured at the front end and the rear end of the U-type PC module 10 as shown in FIG. 9A, but differently, it is formed between the front end and the rear end of the U-type PC module 10. Two or more of them may be arranged at regular intervals at random positions, or may be configured from the front end to the rear end of the U-type PC module 10.

Meanwhile, Figures 6 to 8 show an embodiment of a second joining device 200 for joining the wall 11 of the U-shaped PC module 10 and the end portion of the flat slab PC module 20 to each other. As shown, the second joining device 200 connects both ends of the flat slab PC module 20 to two U-shaped PC modules 10 spaced apart from each other in a state in which a plurality of U-shaped PC modules 10 are arranged to be spaced apart from each other by a certain distance in the lateral direction. It is designed to be joined to the upper part of the wall 11 of the type PC module 10.

The second coupling device 200 of this embodiment includes a second coupling bracket 210, a second coupling rod 220, a second lower connection bracket 230, a second upper connection bracket 241, and a third upper connection bracket. It includes a connection bracket 242, a second lower fastening member 250, and a second upper fastening member 260.

The second coupling bracket 210 is for joining the end of the slab PC module 20 to the wall 11 of the U-type PC module 10, and is attached to the upper end of the wall 11 of the U-type PC module 10. It is configured to be seated and connected to the outer surface of the upper end of the wall 11. The second coupling bracket 210 includes a fixing part 211 fixed to one end of the slab PC module 20, and is formed on the end of the fixing part 211 to form a wall of the U-type PC module 10. It may include a wall support portion 212 mounted on the upper end of (11).

The fixing part 211 of the second coupling bracket 210 is firmly and stably attached to the end of the slab PC module 20 by a plurality of fixing reinforcing bars 280 embedded inside the slab PC module 20. It can be fixed. The fixing reinforcing bar 280 can be fixed to the fixing part 211 by welding, and can be inserted into concrete and integrated with the concrete when manufacturing the slab PC module 20 in a factory.

The wall support part 212 of the second coupling bracket 210 is approximately 'L' shaped and is seated on the upper end of the wall 11 of the U-type PC module 10 and is connected to the outer surface of the upper end of the wall 11. I do it. The vertical part connected to the upper outer surface of the wall 11 of the U-type PC module 10 is joined to the upper end of the wall 11 of the U-type PC module 10 by the second lower fastening member 250. . The second coupling bracket 210 may be installed over the entire length (front-back direction length) at both ends of the slab PC module 20, but alternatively, it may be divided into a plurality of units and installed at regular intervals.

The second connecting rod 220, like the first connecting rod 120, is installed to extend upward from the inside of the upper end of the wall 11 of the U-type PC module 10 and is used to form the second coupling bracket 210. After passing through the hole formed in the wall support 212, it is inserted through the hole formed in the lower part of the wall 11 of the other U-type PC module 10 stacked on the upper side. The lower part of the second joining rod 220 is embedded and fixed inside the upper part of the wall 11 of the U-type PC module 10, and extends vertically to the upper part of the upper part of the wall 11 of the U-type PC module 10. . The second joining rod 220 may be installed over the entire length (front-back direction length) at both ends of the U-type PC module 10, but alternatively, it may be divided into a plurality of units and installed at regular intervals.

The second connecting rod 220, like the first connecting rod 120 and the fixed reinforcing bar 280, is inserted into the concrete poured into the form when the U-type PC module 10 and the slab PC module 20 are manufactured at the factory. It can be integrated with concrete.

The second joining rod 220 may be a square bar or circular bar, bar, frame, etc. having a certain length. Holes through which the second upper fastening member 260 and the second lower fastening member 250 pass horizontally are formed laterally at the upper and lower portions of the second connecting rod 220, respectively.

The second lower connection bracket 230 is installed in close contact with the inner surface of the upper end of the wall 11 of the U-type PC module 10 at the lower side of the end of the slab PC module 20. That is, the second lower connection bracket 230 is disposed on the opposite side of the vertical portion of the second coupling bracket 210 at the upper end of the wall 11 of the U-type PC module 10. The second lower connection bracket 230 is fixed to the upper inner surface of the wall 11 of the U-type PC module 10 by the second lower fastening member 250.

The second upper connection bracket 241 and the third upper connection bracket 242 are installed in close contact with each of the lower inner and outer surfaces of the wall 11 of the U-type PC module 10 stacked on the upper side, respectively, It is fixed to the lower inner and outer surfaces of the wall 11 of the U-type PC module 10 by the second upper fastening member 260, respectively.

The second upper fastening member 260 penetrates the upper part of the second upper connecting bracket 241 and the second connecting rod 220 and the third upper connecting bracket 242 and connects the second upper connecting bracket 241 and the third upper connecting bracket 242. It functions to integrally join the second connecting rod 220 and the third upper connecting bracket 242 with the lower part of the wall 11 of the upper U-shaped PC module 10.

The second lower fastening member 250 penetrates the lower part of the second lower connecting bracket 230 and the second connecting rod 220 and the lower part of the second coupling bracket 210 to form a second lower connecting bracket. It functions to integrally join (230), the second connecting rod 220, and the second coupling bracket 210 with the upper part of the wall 11 of the U-type PC module 10.

The second upper fastening member 260 and the second lower fastening member 250 can be constructed using bolts and nuts, similar to the first upper fastening member 150 and the first lower fastening member 160.

The second joining device 200 having this configuration can be constructed as follows.

A hole formed in the second coupling bracket 210 installed at one end of the slab PC module 20 and the second connecting rod 220 arranged at the upper end of one side wall 11 of the U-type PC module 10 pass through. While doing so, the second coupling bracket 210 of the slab PC module 20 is seated on the upper end of one wall 11 of the U-type PC module 10.

Then, the second lower connection bracket 230 is brought into close contact with the upper inner surface of one wall 11 of the U-type PC module 10, and the second lower fastening member 250 is connected to the second coupling bracket 210. One wall 11 of the U-type PC module 10 and one end of the slab PC module 20 are joined by fastening while passing the second connecting rod 220 and the second lower connecting bracket 230.

Next, another U-type PC module 10 is stacked on the upper side of the U-type PC module 10, and the lower end of one wall 11 of the U-type PC module 10 stacked on the upper side is connected to the second coupling bracket ( 210). At this time, the second connecting rod 220 is inserted into the hole formed at the lower end of the wall 11 on one side of the upper U-type PC module 10, and the lower U-type PC module 10 and the upper U-type PC module 10 ) and the slab PC module 20 are in a state where they can be joined to each other.

In this state, the second upper connection bracket 241 and the third upper connection bracket 242 are in close contact with each of the inner and outer surfaces of the lower end of one wall 11 of the upper U-type PC module 10, and the second upper connection bracket 241 The upper fastening member 260 is fastened through the second upper connecting bracket 241, the upper part of the second connecting rod 220, and the third upper connecting bracket 242.

As a result, the upper end of one side wall 11 of the lower U-type PC module 10, one end of the slab PC module 20, and the lower end of one side wall 11 of the U-type PC module 10 stacked on the upper side are simultaneously As they are connected, they can be firmly joined.

On the other hand, as shown in FIGS. 10 to 14, when support protrusions 13 protruding downward from the lower surface 12 are provided at the lower ends of the walls 11 on both sides of the U-type PC module 10, the slab The fixing part 211 of the second coupling bracket 210 installed at both ends of the PC module 20 is formed in an 'L' shape, and the wall support part 212 is formed at the bottom of the fixing part 211. ' shape, so that the support protrusion 13 of the U-type PC module 10 stacked on the upper side can be seated on the wall support portion 212 of the second coupling bracket 210.

Due to the shape of this second coupling bracket 210, the height of the lower surface of the U-type PC module 10 stacked on the upper side and the slab PC module 20 are generally matched, so that the slab height of the modular structure can be kept constant. You can.

A method of constructing a modular structure using the first joining device 100 and the second joining device 200 having the same configuration as described above will be described with reference to FIGS. 9A to 9C as follows.

First, as shown in FIG. 9A, two U-shaped PC modules 10 are arranged to be spaced apart from the slab PC module 20 at a corresponding interval. And, as shown in Figure 9b, the second coupling bracket 210, the second connecting rod 220, the second lower connecting bracket 230, and the second lower fastening member 250 of the second connecting device 200. ) is used to join both ends of the slab PC module (20) to the upper part of the two U-shaped PC modules (10). At this time, the first coupling bracket 110, the first connecting rod 120, and the first lower connecting bracket of the first connecting device 100 are installed at the upper end of the other wall 11 of the U-type PC module 10. 140) and the first lower fastening member 160 are also assembled.

Then, as shown in FIG. 9C, other U-type PC modules 10 are stacked on the upper side of the U-type PC module 10 on both sides, and the first upper connection bracket 130 of the first joining device 100 ) and the first upper fastening member 150 are assembled through the above-described construction process to join the upper end of one wall 11 of the lower U-shaped PC module 10 and the lower end of the upper U-shaped PC module 10. Then, the second upper connection bracket 241, third upper connection bracket 242, and second upper fastening member 260 of the second joining device 200 are assembled through the above-described construction process to form a lower U-shaped PC module. The upper end of the other wall 11 of (10) is joined to both ends of the slab PC module 20 and the lower end of the other wall 11 of the upper U-type PC module 10.

The precast concrete modular structure according to the present invention as described above joins the walls 11 of a plurality of U-shaped PC modules 10 using the joining rods 120 and 220 configured in a joining device, or connects the walls 11 of a plurality of U-shaped PC modules 10. The wall 11 of the type PC module 10 and both ends of the slab PC module 20 can be firmly and easily connected.

In addition, when building a modular structure by stacking a plurality of U-shaped PC modules 10 vertically or arranging them laterally, overlapping of members (for example, walls) can be prevented by using the slab PC module 20. At this time, an effective space can be created by manufacturing the length of the slab PC module 20 to a desired length.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those skilled in the art will understand the spirit of the present invention as described in the patent claims to be described later. It will be understood that the present invention can be modified and changed in various ways without departing from the technical scope.

10: U-type PC module 11: Wall
12: lower surface 13: support protrusion
20: Slab PC module 100: First joining device
110: first coupling bracket 120: first joining rod
130: First upper connection bracket 140: First lower connection bracket
150: first upper fastening member 160: first lower fastening member
200: Second coupling bracket 220: Second connecting rod
230: Second lower connection bracket 241: Second upper connection bracket
242: Third upper connection bracket 250: Second lower fastening member
260: Second upper fastening member 280: Fixed rebar

Claims (13)

A joining device for precast concrete modular structures that stacks and joins a plurality of U-shaped PC modules made of U-shaped precast concrete (PC) with an open upper surface,
A first coupling bracket installed adjacent to the lower outer surface of the wall of the upper U-type PC module and the upper outer surface of the lower U-type PC module wall;
A first joining rod extending upward from the inside of the upper end of the wall of the lower U-type PC module and inserted into the lower part of the wall of the upper U-type PC module;
A first upper fastening member integrally connected to the inner side of the lower end of the wall of the upper U-type PC module and penetrating the first connecting rod and the first coupling bracket;
A first lower fastening member integrally connected to the inner surface of the upper end of the wall of the lower U-shaped PC module and the first connecting rod and the first coupling bracket; and,
a first lower connection bracket that is installed in close contact with the upper inner surface of the wall of the lower U-shaped PC module and is connected to the first lower fastening member while passing through it;
A joining device for precast concrete modular structures comprising a. The precast concrete modular structure of claim 1, which is installed in close contact with the inner surface of the lower end of the wall of the upper U-shaped PC module, further comprising a first upper connection bracket through which the first upper fastening member penetrates. Joining device. delete The method of claim 1, wherein the first coupling bracket includes a vertical support portion simultaneously in contact with the outer surface of the lower end of the wall of the upper U-type PC module and the upper outer surface of the wall of the lower U-type PC module, and the vertical support portion. It includes a horizontal support part installed horizontally with respect to the ground in the middle portion and stacked between the lower end of the wall of the upper U-shaped PC module and the upper end of the wall of the lower U-shaped PC module,
A joining device for a precast concrete modular structure in which the upper portion of the plurality of first connecting rods penetrates the horizontal support portion of the first coupling bracket and is inserted into the lower portion of the wall of the upper U-type PC module to be joined. Precast concrete that joins the wall of one or more U-shaped PC modules made of U-shaped precast concrete (PC) with an open upper surface and the end of a slab PC module made of flat precast concrete (PC). As a joining device for modular structures,
A second coupling bracket installed at the end of the slab PC module, seated on the upper part of the wall of the U-shaped PC module, and connected to the outer surface of the upper part of the wall;
a second coupling rod extending upward from the inside of the upper wall of the U-type PC module and penetrating the second coupling bracket;
A second lower fastening member passing through and joining the upper inner surface of the wall of the U-type PC module and the second connecting rod and the second coupling bracket; and,
a second lower connection bracket that is installed in close contact with the upper inner surface of the wall of the U-type PC module and is integrally connected with the second lower fastening member penetrating therethrough;
A joining device for precast concrete modular structures comprising a. delete The method of claim 5, wherein the upper part of the second connecting rod penetrates the second coupling bracket and is inserted into the lower part of the wall of another U-shaped PC module stacked on the upper side of the U-shaped PC module. Joining device. According to claim 7, a second upper connection bracket and a third upper connection bracket are installed in close contact with each of the lower inner and outer surfaces of the wall of the U-shaped PC module stacked on the upper side; and,
A second upper fastening member penetrating the second upper connecting bracket, the second connecting rod, and the third upper connecting bracket and integrally joining the lower end of the wall of the U-shaped PC module stacked on the upper side;
A joining device for a precast concrete modular structure further comprising a. The device of claim 5, wherein the second coupling bracket is fixed to an end of the slab PC module by a plurality of fixing bars embedded inside the slab PC module. The method of claim 5, wherein the second coupling bracket includes a fixing part fixed to one end of the slab PC module, and a wall support part formed at an end of the fixing part and seated on the upper end of the wall of the U-shaped PC module. A joining device for precast concrete modular structures, including: A plurality of U-shaped PC modules made of U-shaped precast concrete (PC) with an open upper surface and stacked up and down;
A first joining device for joining the upper end of the wall of the U-shaped PC module disposed on the lower side and the lower end of the wall of the U-shaped PC module disposed on the upper side;
A slab PC module made of flat precast concrete (PC), with both ends connecting and closing the upper ends of the walls on both sides of the U-shaped PC module or the upper ends of the walls of a plurality of laterally spaced U-shaped PC modules; and,
A second joining device for joining the upper part of the wall of the U-type PC module and the end part of the slab PC module;
Including,
The first joining device is,
A first coupling bracket installed adjacent to the outer surface of the lower end of the wall of the upper U-type PC module and the upper outer surface of the wall of the lower U-type PC module;
A first joining rod extending upward from the inside of the upper end of the wall of the lower U-type PC module and inserted into the lower part of the wall of the upper U-type PC module;
A first upper connection bracket installed in close contact with the lower inner surface of the wall of the upper U-shaped PC module;
A first lower connection bracket installed in close contact with the upper inner surface of the wall of the lower U-shaped PC module;
A first upper fastening member penetrating the first upper connecting bracket, the upper part of the first connecting rod, and the upper part of the first coupling bracket, and integrally joined to the lower end of the wall of the upper U-shaped PC module; and,
A first lower fastening member penetrating the first lower connecting bracket, the lower part of the first connecting rod, and the lower part of the first coupling bracket, and integrally joined to the upper part of the wall of the lower U-shaped PC module;
A precast concrete modular structure comprising. delete The method of claim 11, wherein the second joining device is:
A second coupling bracket installed at the end of the slab PC module, seated on the upper part of the wall of the U-shaped PC module, and connected to the outer surface of the upper part of the wall;
A second joining rod extending upward from the inside of the upper part of the wall of the U-type PC module, penetrating the second coupling bracket, and being inserted into the lower part of the wall of another U-type PC module stacked on the upper side of the U-type PC module;
A second lower fastening member passing through and joining the upper inner surface of the wall of the U-type PC module and the second connecting rod and the second coupling bracket;
a second lower connection bracket that is installed in close contact with the upper inner surface of the wall of the U-type PC module and is integrally connected with the second lower fastening member penetrating therethrough;
A second upper connection bracket and a third upper connection bracket installed in close contact with each of the lower inner and outer surfaces of the wall of the U-shaped PC module stacked on the upper side;
A second upper fastening member penetrating the second upper connecting bracket, the second connecting rod, and the third upper connecting bracket and integrally joined to the lower end of the wall of the upper U-shaped PC module; and,
A second lower fastening member penetrating the second lower connecting bracket, the lower part of the second connecting rod, and the lower part of the second coupling bracket and integrally joined to the upper part of the wall of the U-type PC module;
A precast concrete modular structure comprising.

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