KR102548929B1 - Retaining wall that can reduce construction period and cost with modular construction method of pc concrete block and secure stability even in high-rise design by reinforced wire tension and integrated behavior of module - Google Patents

Abstract

The modular construction method of PC concrete block reduces the construction period and cost, and provides a retaining wall that can secure stability even in high-rise design with the integral behavior of the module and the reinforcement of wire tension.
The retaining wall includes a first beam having a guide; a second beam disposed spaced apart from the first beam and having a guide; A plurality of concrete blocks, one side of which is inserted into the guide of the first beam and the other side of which is inserted into the guide of the second beam, and which are stacked and assembled; a plurality of fastening bolts, some passing through the guide of the first beam and the plurality of concrete blocks, and others penetrating the guide of the second beam and the plurality of concrete blocks; It is characterized in that it comprises a plurality of wires connected to some of the plurality of fastening bolts and fixed to the ground in a state in which tension is applied.

Description

Retaining wall that can reduce construction period and cost with modular construction method of PC concrete block and secure stability even in high-rise design by integral behavior of module and reinforcement of wire tension PC CONCRETE BLOCK AND SECURE STABILITY EVEN IN HIGH-RISE DESIGN BY REINFORCED WIRE TENSION AND INTEGRATED BEHAVIOR OF MODULE}

The present invention relates to a retaining wall capable of reducing construction period and cost through a modular construction method of PC concrete blocks and securing stability even in high-rise design due to the integral behavior of modules and reinforcement of wire tension.

A retaining wall is a wall that resists soil pressure and prevents it from collapsing. A retaining wall is a structure made to prevent the collapse of the “ground” that occurs when the stable “slope” of the surface ground is made steeper than that. It is essential for piling up soil, cutting down mountains, and filling up the seashore.

On the other hand, OSC (Off-Site Construction) is a technology that pre-manufactures building materials and structures and then assembles them at the construction site. It is a concept.

In the modular construction method, unit modules composed of doors, walls, and window frames are prefabricated in an external factory and transported to the construction site. It is a smart construction technology that assembles like Lego blocks, and the PC method refers to a method of prefabricating concrete structures such as columns, beams, walls, and slabs in a factory and assembling and installing them on site.

Modular and PC methods can shorten the construction period because they only need to be assembled on site, and as they are manufactured at the factory, labor costs are reduced, so construction costs are also reduced compared to the existing method. In addition, civil complaints such as noise and dust can be solved, and the structure can be reused even when the building is dismantled, resulting in less waste and is environmentally friendly.

It is analyzed that off-site construction (OSC) technology will become the main production method in the future construction market due to the lack of skilled construction workers and the phenomenon of avoiding on-site construction by young people.

On the other hand, the off-site technology has not yet been applied to the construction of retaining walls. In order to obtain the appropriate shear strength and bending strength in a retaining wall that bears earth pressure in the form of a cantilever, the walls must behave as a unit, but with the modular construction method, each This is because the PC concrete block cannot withstand the earth pressure because it does not move integrally. Because this is also the reason why retaining walls cannot be designed as high-rise buildings over 10m, difficulties exist in many construction sites.

Therefore, it is necessary to research and develop a retaining wall capable of modular construction and high-rise design by improving the shear strength and bending strength of the PC concrete block module itself and operating a plurality of modules as an integrated unit.

The problem to be solved by the present invention is to provide a retaining wall that can reduce the construction period and cost with the modular construction method of PC concrete blocks and secure stability even in the case of high-rise design due to the integral behavior of the module and the reinforcement of wire tension.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

A retaining wall of the present invention for solving the above problems includes a first beam having a guide; a second beam disposed spaced apart from the first beam and having a guide; A plurality of concrete blocks, one side of which is inserted into the guide of the first beam and the other side of which is inserted into the guide of the second beam, and which are stacked and assembled; a plurality of fastening bolts, some passing through the guide of the first beam and the plurality of concrete blocks, and others penetrating the guide of the second beam and the plurality of concrete blocks; It may be characterized in that it comprises a plurality of wires connected to some of the plurality of fastening bolts and fixed to the ground in a state in which tension is applied.

Some of the plurality of fastening bolts pass through a connecting portion between the guide of the first beam and a neighboring concrete block among the plurality of concrete blocks, and others pass through a guide of the second beam and a neighboring concrete block among the plurality of concrete blocks. It may be characterized by penetrating the connecting portion of the block.

Each of the plurality of concrete blocks includes a body; a first connecting portion protruding upward from the rear of the upper surface of the main body; a second connecting portion protruding downward from the front of the lower surface of the main body; a first vertical reinforcing bar reinforced inside the main body and the first connection part; a second vertical reinforcing bar reinforced inside the main body and the second connection part; It may be characterized in that it includes a strap reinforcing bar that is reinforced to wind the first vertical reinforcing bar and the second vertical reinforcing bar inside the main body.

Among the plurality of concrete blocks, neighboring concrete blocks may be assembled so that the front surface of the first connection part of the concrete block disposed on the lower side and the rear surface of the second connection part of the concrete block disposed on the upper side contact each other. .

A pipe housing is disposed at the first connecting portion of each of the plurality of concrete blocks, welded and coupled to the first vertical reinforcing bar, and penetrating in the front-back direction, and the second connecting portion of each of the plurality of concrete blocks is welded with the second vertical reinforcing bar. A pipe housing is coupled and penetrates in the forward and backward directions, and a portion of the plurality of fastening bolts penetrates the guide of the first beam and the pipe housing of the first connection portion and the second connection portion of the plurality of concrete blocks, and the rest may be characterized in that it passes through the guide of the second beam and the pipe housing of the first connection part and the second connection part of the plurality of concrete blocks.

In the retaining wall of the present invention, vertical reinforcing bars are each reinforced in a plurality of concrete blocks, and each of the vertical reinforcing bars is provided with a first connection portion and a second connection portion, and a pair of vertical reinforcing bars are wrapped by strap reinforcement and stacked next to each other The placed concrete blocks are combined so that the first connection part and the second connection part are formed, and a plurality of concrete blocks independently secured in shear/bending strength act as one body, thereby guaranteeing structural stability and enabling construction by the modular construction method. there is

In addition, the retaining wall of the present invention is welded with vertical reinforcing bars at the first and second connection parts of the concrete blocks, and a pipe housing penetrating the concrete block is disposed, and a fastening bolt connecting neighboring concrete blocks is disposed through the pipe housing Because of this, the integrity between the concrete block modules is further improved.

Furthermore, the retaining wall of the present invention has the advantage of being able to design a high-rise according to the design request (necessity) of the construction site by partially offsetting the earth pressure with the tension of the wire.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a perspective view showing a retaining wall of the present invention.
2 is a conceptual diagram showing the construction process of the retaining wall of the present invention.
3 is a front view and a side view showing the retaining wall of the present invention.
Figure 4 is a front view and a side view showing the beam support and the wire holder of the present invention.
5 is a plan view and a side view showing the concrete block of the retaining wall of the present invention.
6 is a plan view and a side view showing the fence block of the retaining wall of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only these embodiments are intended to complete the disclosure of the present invention, and are common in the art to which the present invention belongs. It is provided to fully inform the person skilled in the art of the scope of the invention, and the invention is only defined by the scope of the claims.

Terminology used herein is for describing the embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. As used herein, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other elements other than the recited elements. Like reference numerals throughout the specification refer to like elements, and “and/or” includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first element mentioned below may also be the second element within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings commonly understood by those skilled in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

Hereinafter, the retaining wall 100 of the present invention will be described with reference to the drawings. Figure 1 is a perspective view showing the retaining wall of the present invention, Figure 2 is a conceptual view showing the construction process of the retaining wall of the present invention, Figure 3 is a front view and side view showing the retaining wall of the present invention, Figure 4 is a beam support and A front view and a side view showing a wire anchorage, Figure 5 is a plan view and side view showing the concrete block of the retaining wall of the present invention, Figure 6 is a plan view and side view showing the fence block of the retaining wall of the present invention.

Hereinafter, in describing the retaining wall 100 of the present invention, only the minimum unit module (consisting of a pair of beams) is described, but it is obvious to those skilled in the art that the size of the module can be expanded by simple combination of components , It is also obvious that all included in the scope of rights of the retaining wall 100 of the present invention.

The retaining wall 100 of the present invention may include a first beam 10, a second beam 20, a plurality of concrete blocks 30, a plurality of fastening bolts 40, and a plurality of wires 50.

The first beam 10 and the second beam 20 may be spaced apart from each other in the left and right directions, and a guide G into which a plurality of concrete blocks 30 are inserted may be formed. For example, the first beam 10 and the second beam 20 are "H-shaped beams", and guides G may be formed in each of a pair of spaces between the blades on both sides, but are not limited thereto.

The first beam 10 and the second beam 20 may be components constructed in the first step, and a plurality of concrete blocks 30 are formed between the first beam 10 and the second beam 20. It can be inserted and stacked.

The plurality of concrete blocks 30 may be components constructed in the second step, one side is inserted into the guide G of the first beam 10 and the other side is inserted into the guide G of the second beam 20 It may be components that are fitted and assembled by being stacked in the vertical direction. The plurality of concrete blocks 30 are PC concrete blocks, which can be manufactured in a factory by a modular construction method and then assembled at a construction site.

On the other hand, each of the plurality of concrete blocks 30 has a body 31, a first connection portion 32 formed by protruding upward from the rear of the upper surface of the body 31, and a lower surface of the body 31 protruding downward from the front The formed second connection part 33, the first vertical reinforcing bars 34 placed inside the main body 31 and the first connection part 32, and the reinforcement placed inside the main body 31 and the second connection part 33 It may include a second vertical reinforcing bar 35 and a strap reinforcing bar 36 that is reinforced so as to wind the first vertical reinforcing bar 34 and the second vertical reinforcing bar 35 inside the body 31.

In this case, the neighboring concrete blocks among the plurality of concrete blocks 30 have a front surface of the first connection part 32 of the concrete block disposed on the lower side and a rear surface of the second connection part 33 of the concrete block disposed on the upper side. They can be assembled to contact each other. In this case, the first connection part 32 and the second connection part 33 of the concrete block have a mutually symmetrical shape and arrangement based on the center of gravity of the main body 31, and accordingly, the first connection part 32 and the second connection part 33 of the concrete block disposed on the lower side The first connection part 32 and the second connection part 33 of the concrete block disposed on the upper side may be combined in a shape match (formal match).

Furthermore, a pipe housing H may be disposed at the first connection portion 32 of each of the plurality of concrete blocks 30 by being fused and coupled to the first vertical reinforcing bars 34 and penetrating in the forward and backward directions, and a plurality of concrete blocks ( 30) A pipe housing H may be disposed in each of the second connection portions 33, which is fused and coupled to the second vertical reinforcing bar 35 and penetrates in the forward and backward directions.

In this case, the upper end of the first vertical reinforcing bar 34 may be welded while being wound around the pipe housing (H), and the lower end of the second vertical reinforcing bar 35 may be fused while being wound around the pipe housing (H). , The integrity of the vertical reinforcement and the pipe housing (H) can be increased, but is not limited thereto.

On the other hand, the first vertical reinforcing bars 34 and the second vertical reinforcing bars 35 may exist in plurality, the plurality of first vertical reinforcing bars 34 are arranged spaced apart from each other in the left and right directions, and the plurality of second vertical reinforcing bars ( 35) may be arranged spaced apart from each other in the left and right directions. In this case, there are two pipe housings H that are fused and coupled to the plurality of first vertical bars 34, and one is fused to the first vertical bar located at the left end of the plurality of first vertical bars 34. is coupled and the other one can be fused and coupled to the first vertical reinforcing bar located at the right end of the plurality of first vertical reinforcing bars 34. In addition, there are two pipe housings (H) that are fused and coupled to the plurality of second vertical reinforcements 35, and one is fused to the second vertical reinforcement located at the left end of the plurality of second vertical reinforcements 35 and the other one may be fused and coupled to the second vertical reinforcing bar located at the right end of the plurality of second vertical reinforcing bars 35.

Some of the plurality of fastening bolts 40 may pass through the guide G of the first beam 10 and the plurality of concrete blocks 30, respectively, and each of the remaining guides G of the second beam 20 Through each of the plurality of concrete blocks 30, the first beam 10, the second beam 20 and the plurality of concrete blocks 30 can be fastened, and at the same time, the neighboring of the plurality of concrete blocks 30 Concrete blocks can be joined.

That is, some of the plurality of fastening bolts 40 pass through the connection portion of the guide G of the first beam 10 and the neighboring concrete block of the plurality of concrete blocks 30, and the rest of the second beam 20 ) It can be fastened by penetrating the connection portion of the guide (G) and the neighboring concrete block of the plurality of concrete blocks (30).

In this case, a part of the plurality of fastening bolts 40 is a pipe housing of the guide G of the first beam 10 and the first connection part 32 and the second connection part 33 of the plurality of concrete blocks 30 ( H), and the rest passes through the guide G of the second beam 20 and the pipe housing H of the first connection part 32 and the second connection part 33 of the plurality of concrete blocks 30 can be contracted.

Summarizing the above, each of the plurality of concrete blocks 30 has a first vertical reinforcing bar 34, a second vertical reinforcing bar 35 and a strap reinforcing bar 36 in order to improve the shear / bending strength of the unit module itself. It is cured and manufactured in the state of reinforcement. In addition, neighboring concrete blocks among the plurality of concrete blocks 30 are laminated in a state in which the first connection part 32 on one side and the second connection part 33 on the other side are molded together, and the first vertical reinforcement 34 and the second Integrity can be improved by being fastened by a fastening member penetrating the pipe housing H, which is welded and integrated with the vertical reinforcing bars 35. Accordingly, the plurality of concrete blocks 30 can respond to earth pressure loads by acting as bending rigid cantilevers like one block (improving structural stability).

The plurality of wires 50 may be components constructed in the third step, and may be connected to some of the plurality of fastening bolts 40 and fixed to the ground in a state in which tension is applied. For example, the plurality of wires 50 may include a first wire and a second wire, the first wire is fastened through the guide (G) of the first beam 10 of the plurality of fastening bolts 40 It may be connected to a bolt and fixed to the ground, and the second wire may be connected to a plurality of fastening bolts 40 and fixed to the ground by being connected to a fastening bolt penetrating the guide G of the second beam 20, which In this case, the vertical phase (level) of the fastening bolt to which the first wire and the second wire are connected may be the same. In addition, when reinforcement by tension is further required, the number of the plurality of wires 50 may increase. As another example, the plurality of wires 50 may include a first wire, a second wire, a third wire, and a fourth wire. It may include, the first wire and the third wire may be fixed to the ground by being connected to different fastening bolts penetrating the guide (G) of the first beam 10 of the plurality of fastening bolts 40, The second wire and the fourth wire may be fixed to the ground by being connected to different fastening bolts passing through the guide G of the second beam 20 among the plurality of fastening bolts 40, and the first wire and the second wire The vertical phase (level) of the fastening bolt to which is connected is the same, and the vertical phase (level) of the fastening bolt to which the third wire and the fourth wire are connected may be the same, but is not limited thereto.

As described above, the plurality of wires 50 provide tension to the retaining wall 100 of the present invention in the direction opposite to the earth pressure direction to partially offset the earth pressure, thereby enabling high-rise design (for example, a 15m height high-rise retaining walls).

Hereinafter, additional technical features of the retaining wall 100 of the present invention will be described. The retaining wall 100 of the present invention may further include a lower concrete block (not shown). The lower concrete block is a block disposed at the lowermost part of the plurality of concrete blocks 30, and is manufactured by the PC method like the plurality of concrete blocks 30, and the second connection portion 33 is removed from the plurality of concrete blocks 30. By having the same shape and arrangement (the rest of the components are the same), the lower surface can be formed flat.

In addition, the retaining wall 100 of the present invention may further include a fence block 60. The fence block 60 may be manufactured in the same way as the plurality of concrete blocks 30, and may be disposed above the uppermost concrete block among the plurality of concrete blocks 30. The fence block 60 has a fence body 61 having an opening in the form of a fence at the top, a third connection portion 62 formed by protruding downward from the front of the lower surface of the fence body 61, and the fence body 61 The third vertical reinforcing bar (not shown) reinforced at the rear of the inside, the fourth vertical reinforcing bar (not shown) reinforced at the inside of the fence body 61 and the third connection portion 62, and the inside of the fence body 61 It may include a strap reinforcing bar 63 that is reinforced so as to wind the third vertical reinforcing bar and the fourth vertical reinforcing bar.

On the other hand, the fence block 60 has a plurality of rear surfaces of the third connecting portion 62?quot; Among the concrete blocks 30, it may be assembled to contact with the front surface of the first connecting portion 32 of the uppermost concrete block.

Further, a pipe housing H may be disposed in the third connection portion 62 of the fence block 60 by being fused and coupled to the fourth vertical reinforcing bar and penetrating in the front and rear directions. In this case, the upper end of the fourth vertical reinforcing bar may be fused while being wound around the pipe housing (H), so that the integrity of the vertical reinforcing bar and the pipe housing (H) may be increased, but is not limited thereto.

On the other hand, the third vertical reinforcing bars and the fourth vertical reinforcing bars may exist in plurality, and the plurality of third vertical reinforcing bars and the plurality of fourth vertical reinforcing bars may be arranged spaced apart from each other in the left and right directions. In this case, there are two pipe housings (H) that are fused and coupled to the plurality of fourth vertical bars, and one is fused and coupled to the fourth vertical bar located at the left end of the plurality of fourth vertical bars, and the other is It may be fused and coupled to the fourth vertical reinforcing bar located at the right end of the plurality of fourth vertical reinforcing bars.

On the other hand, water drain holes may be formed along each side of the lower concrete block, the plurality of concrete blocks 30, and the fence block 60 and may be aligned in a vertical direction. In addition, an additional water drain hole aligned with the opening of the fence block 60 of the lower concrete block and the plurality of concrete blocks 30 may be formed along the center line portion. Accordingly, it is possible to smoothly drain rainwater and the like to prevent rainwater from accumulating and collapsing.

Summarizing the above, some of the plurality of fastening bolts 40 penetrate the guide G and the lower concrete block of the first beam 10 or guide G of the first beam 10 and the plurality of concrete blocks. It may penetrate the block 30 or pass through the guide G and the fence block 60 of the first beam 10, and each of the others penetrates the guide G and the lower concrete block of the second beam 20 Or by penetrating the guide of the second beam 20 and the plurality of concrete blocks 30 or penetrating the guide of the second beam 20 and the fence block 60, the connection between each member can be fastened from both left and right sides can

On the other hand, the first beam 10 and the second beam 20 may be seated on the ground by beam supports 11, respectively. The beam support 11 extends from the lower plate of the beam concrete block 12 extending backward and the first beam 10 or the second beam 20 to the inside of the beam concrete block 12 and inserts four An anchor bolt 13 may be included. On the other hand, the lower part of the four anchor bolts 13 is bent in the shape of a hook in the shape of an anchor, so that the beam can be firmly held so that it is not pulled out from the holding member.

In addition, the plurality of fastening bolts 40 are provided with wire brackets 41 connected to the plurality of wires 50, and the wire bracket 41 is "L-shaped" and one side is interposed between the bolts and nuts and fixed On the other side, a wire may be anchored and coupled. In addition, it can be fixed to the ground by the turnbuckle bracket (B) of a plurality of wires 50, and thus, tension is applied to offset some of the earth pressure applied by the retaining wall 100 of the present invention.

Meanwhile, in a modified example (not shown) of the retaining wall 100 of the present invention, a coating friction layer may be formed on the inner surface of the pipe housing H. The coating friction layer may be formed of polytetrafluoroethylene (PTFE), has a structure in which a carbon chain is surrounded by fluorine atoms, has viscosity for viscous friction, and is a chemically stable material. Since the bolt 40 is in close contact with the pipe housing H in a state in which viscous friction is applied, integral behavior can be improved.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (5)

A first beam on which a guide is formed;
a second beam disposed spaced apart from the first beam and having a guide;
A plurality of concrete blocks, one side of which is inserted into the guide of the first beam and the other side of which is inserted into the guide of the second beam, and which are stacked and assembled;
a plurality of fastening bolts, some passing through the guide of the first beam and the plurality of concrete blocks, and others penetrating the guide of the second beam and the plurality of concrete blocks; and
It includes a plurality of wires connected to some of the plurality of fastening bolts and fixed to the ground in a state in which tension is applied,
Each of the plurality of concrete blocks,
main body;
a first connecting portion protruding upward from the rear of the upper surface of the main body;
a second connecting portion protruding downward from the front of the lower surface of the main body;
a first vertical reinforcing bar reinforced inside the main body and the first connection part;
A second vertical reinforcing bar reinforced inside the main body and the second connection part; and
Including a strap reinforcing bar reinforced to wind the first vertical reinforcing bar and the second vertical reinforcing bar inside the main body,
Among the plurality of concrete blocks, neighboring concrete blocks are assembled so that the front surface of the first connection part of the concrete block disposed on the lower side and the rear surface of the second connection part of the concrete block disposed on the upper side are in contact with each other,
A pipe housing welded and coupled to the first vertical reinforcing bar and penetrating in the front and rear direction is disposed in the first connection part of each of the plurality of concrete blocks,
A pipe housing welded and coupled to the second vertical reinforcing bar and penetrating in the front and rear direction is disposed in the second connection portion of each of the plurality of concrete blocks,
Some of the plurality of fastening bolts pass through a connecting portion between the guide of the first beam and a neighboring concrete block among the plurality of concrete blocks, and others pass through a guide of the second beam and a neighboring concrete block among the plurality of concrete blocks. Penetrate the connection part of the block,
Some of the plurality of fastening bolts pass through the guide of the first beam and the pipe housing of the first connection part and the pipe housing of the second connection part of the plurality of concrete blocks, and the rest pass through the guide of the second beam and the pipe housing of the second connection part. Passing through the pipe housing of the first connection part and the pipe housing of the second connection part of the plurality of concrete blocks,
The upper end of the first vertical reinforcing bar of each of the plurality of concrete blocks is fused while being wound around the pipe housing of the first connection part of the plurality of concrete blocks, and the lower end of the second vertical reinforcing bar of each of the plurality of concrete blocks A retaining wall characterized in that the plurality of concrete blocks are fused in a wound state to the pipe housing of the second connection part. delete delete delete delete

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