KR101315290B1 - Precast block of retaining wall and construction method using thereof - Google Patents

Precast block of retaining wall and construction method using thereof Download PDF

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Publication number
KR101315290B1
KR101315290B1 KR1020130000740A KR20130000740A KR101315290B1 KR 101315290 B1 KR101315290 B1 KR 101315290B1 KR 1020130000740 A KR1020130000740 A KR 1020130000740A KR 20130000740 A KR20130000740 A KR 20130000740A KR 101315290 B1 KR101315290 B1 KR 101315290B1
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KR
South Korea
Prior art keywords
portion
wall
precast block
retaining wall
upper plate
Prior art date
Application number
KR1020130000740A
Other languages
Korean (ko)
Inventor
이응교
Original Assignee
주식회사 인우 (Inwoo.Co.Ltd)
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Publication date
Application filed by 주식회사 인우 (Inwoo.Co.Ltd) filed Critical 주식회사 인우 (Inwoo.Co.Ltd)
Priority to KR1020130000740A priority Critical patent/KR101315290B1/en
Application granted granted Critical
Publication of KR101315290B1 publication Critical patent/KR101315290B1/en

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/02Retaining or protecting walls
    • E02D29/0258Retaining or protecting walls characterised by constructional features
    • E02D29/0266Retaining or protecting walls characterised by constructional features made up of preformed elements
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/02Retaining or protecting walls
    • E02D29/025Retaining or protecting walls made up of similar modular elements stacked without mortar
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/20Miscellaneous comprising details of connection between elements

Abstract

PURPOSE: An extended precast block of a retaining wall and a construction method of the retaining wall using the same are provided to improve workability and transferability and solve problems about the inconvenience of carrying caused by the limit of a height during transfer and about loading and overloading. CONSTITUTION: An extended precast block (100) of a retaining wall comprises a bottom surface unit (300), a wall unit (200), and an upper plate unit (400). The upper plate unit covers the upper part of the bottom surface unit and includes a placing unit of a vertically penetrating shape inside. The bottom surface unit protrudes in order to be accommodated in the space of the inside of the placing unit and includes a protrusion unit reinforcing the connection with the upper plate unit. The upper plate unit includes a short protrusion unit so that the end of the bottom surface unit is closely attached to the inner surface of the upper plate unit.

Description

Expandable precast block of retaining wall and construction method of retaining wall using same {{ECLECT BLOCK OF RETAINING WALL AND CONSTRUCTION METHOD USING THEREOF}

The present invention relates to the field of construction, expandable precast block of the retaining wall having a structure that can be improved in construction and mobility, improves the robustness at the time of construction and easy to expand the structure of the road or railway and using the same It relates to a construction method of a retaining wall.

Generally, a retaining wall is installed in the process of constructing roads, railways, river banks, and the like on inclined portions of the ground.

These retaining walls were mainly L-shaped or inverted-T-shaped, and were installed in-situ. Specifically, construction is carried out by installing reinforcing bars and formworks on the site and casting concrete.

However, since the concrete retaining wall construction by such a site casting is performed directly on site in order to form the retaining wall structure, there is a problem that the construction period is prolonged and the construction cost is excessively increased. Since the construction period is long, And the risk of a safety accident is increased.

In recent years, a method of assembling an L-shaped or inverted T-shaped precast concrete retaining wall manufactured in the factory in the field has been proposed in order to solve such a problem.

1 is a perspective view showing such a prior art retaining wall.

The illustrated L-shaped precast retaining wall 1 is composed of a bottom plate portion 2 and a wall plate portion 3 which is provided in the height direction near one end of the upper surface of the bottom plate portion 2, and on the center side of the bottom plate portion 2. Reinforcing bars 5 are exposed in the spaces on both sides of the precast concrete part 2a, and then the site casting is made after assembling the reinforcing unit parts 2b.

Such a pre-cast retaining wall can be back-filled immediately after the retaining wall is installed, and can be restored to the surrounding wrapping. Therefore, the construction speed is fast and the economic efficiency is improved. In addition, There is an advantage in the construction of the city or urgent.

However, such conventional precast concrete retaining walls are limited in the shape and size of the pre-cast concrete because they are subject to restrictions on the height and weight of the road traffic when moving from the factory to the installation site.

In addition, the conventional precast concrete retaining wall was manufactured by using a mold configured to be formed parallel to the ground. When the retaining wall is manufactured in this manner, the concrete pouring area is large, resulting in excessive time and cost for forming the finished surface flat. There was a problem.

The present invention has been made to solve the above problems, to provide a retaining wall expandable precast block and a method for constructing a retaining wall using the same that can be effectively separated and manufactured to a plurality of units to improve the mobility to the transport equipment There is a purpose.

In addition, an object of the present invention is to provide an expandable precast block of a retaining wall and a method of constructing a retaining wall using the same, in which the workability is excellent, the robustness is improved, and the air can be significantly shortened.

An expanded precast block of a retaining wall according to the present invention is disposed on an inner circumferential side and disposed on an inner circumferential side of a bottom portion supported on a ground or foundation, a plate-shaped wall portion formed vertically from the bottom portion, and the bottom portion. The upper plate portion is provided with a pour portion of the upper and lower perforated shape so that the bottom portion, the wall portion and the upper plate portion provides an expandable precast block of the retaining wall is formed in a precast manner. Therefore, there is an advantage that the workability, mobility, and robustness as the retaining wall can be improved, and a structure can be formed on various roads and railways according to the selection of the longitudinal length of the upper plate portion.

The bottom portion may include a protrusion that protrudes toward an inner circumferential side of the pouring portion. As a result, the fastening force of the bottom portion and the upper plate portion is improved.

The protrusion may further include a top tension member disposed in the lateral direction and disposed to cross the arrangement of the top plate and the protrusion. Therefore, the rigidity at the time of pouring is improved and fastening force is excellent.

The protrusions are preferably arranged in two rows in the longitudinal direction. Therefore, the firmness at the time of pouring concrete is further improved.

The upper plate portion may include a stepped portion extending downward so that the end side of the bottom portion is in close contact with the inner surface. Accordingly, accurate assembly at site construction is possible.

The wall portion may be formed by coupling a plurality of walls to each other in the height direction. Therefore, workability and mobility can be further improved.

The apparatus may further include a longitudinal tension member disposed to longitudinally penetrate the plurality of walls and the bottom surface. Accordingly, the fastening force between the bottom portion and the walls is excellent and the robustness of the retaining wall is improved.

It is preferable that the bottom surface portion is formed in a shape corresponding to the bottom surface of the wall portion and has a recess portion into which a portion of the lower end side of the wall portion is inserted. Therefore, accurate construction is possible.

The apparatus may further include a transverse tension member disposed to penetrate the wall portion or the bottom surface in a transverse direction, and the transverse tension member may be disposed to penetrate adjacent precast blocks and provide a tension force. Therefore, the firmness in the formation of the retaining wall is improved.

In addition, it is preferable that the wall portion includes a protrusion protruding from one side and a groove portion corresponding to the protrusion on the other side for the purpose of improving assembly performance and sealing performance.

It may further include a sealing member interposed between the protrusion of one precast block and the groove of the adjacent precast block. This improves the airtightness of the connecting portion of the retaining wall.

In addition, it may further include a cover member disposed to cover the front or rear of the connection portion of the adjacent precast block.

On the other hand, as a construction method of the retaining wall using the precast block, the concrete is poured around the seating step of the bottom portion is disposed on the ground or foundation, the top plate arrangement step is arranged on the top surface of the bottom portion and the pour portion formed on the top plate It provides a method of constructing a retaining wall using a precast block comprising a casting step. Thus, a retaining wall of a robust structure is provided while improving workability.

After the mounting step may further include a fastening step of placing the plurality of walls and the bottom portion in the height direction and penetrate the longitudinal tension member. Accordingly, there is an advantage in that the mobility is improved, and solid assembly is possible.

After the top plate arrangement step may further comprise a connecting step of arranging the top tension member to cross the arrangement of the protrusions exposed to the pour portion of the top plate. Therefore, the robustness of the retaining wall by the combination of the precast block and the precast block can be further improved.

In addition, the plurality of precast blocks may be in close contact with each other, and the transverse tension member may further include a step disposed through the plurality of precast blocks, thereby improving the robustness by the prestress.

The expansion precast block of the retaining wall and the method of constructing the retaining wall using the same according to the present invention include a wall portion, a bottom portion and a top plate portion, and the retaining wall is constructed in a manner that each unit is precast and transported in a precast manner. Since it can be formed, there is an effect that the workability and mobility are improved. In particular, when the wall portion is formed of a plurality of walls, there is an effect that can solve the inconvenience of transportation due to the restriction of the height when transferring to a conveying means, such as a truck, and problems caused by loading and overload between the transfer.

In addition, the upper plate portion may be formed in a manner that extends in the longitudinal direction more than the bottom portion to form the foundation or road surface of the road or railway, according to the concept of the invention freely form the desired area according to the selection freely integrated with the retaining wall It has the advantage of further improving the sex.

In addition, since the bottom part is arranged in such a manner as to cover the top plate, construction of fastening and pouring is performed at the site, thereby improving the rigidity of the retaining wall and minimizing the need for pouring materials such as concrete to be poured at the site. There is an effect that can be significantly shortened.

1 is a perspective view showing a retaining wall of the prior art.
Figure 2 is a perspective view showing an expanded precast block of the retaining wall according to the first embodiment of the present invention.
3 is a side view showing the precast block of FIG.
Figure 4 is a side view showing the cover portion of the precast block of FIG.
5 is a perspective view illustrating a modification of the lid of FIG. 4.
Figure 6 is a perspective view showing an expanded precast block of the retaining wall according to a second embodiment of the present invention.
FIG. 7 is an enlarged cross-sectional view of the side of the precast block of FIG. 6; FIG.
FIG. 8 is an enlarged cross-sectional view of the fixing portion of the precast block of FIG.
9 is a perspective view showing a state in which a precast retaining wall is installed by the precast block of FIG.
10 is a perspective view showing an expanded precast block of a retaining wall according to a third embodiment of the present invention.
FIG. 11 is an exploded perspective view of the precast block of FIG. 10; FIG.
FIG. 12 is a plan view of a wall part in the precast block of FIG. 10; FIG.
13 is a perspective view showing a state in which a precast retaining wall is installed by a precast block according to a fourth embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in more detail the expanded precast block of the retaining wall and the construction method of the retaining wall using the same.

In the concept of the present invention, the precast block applied to the retaining wall will be described. However, the present invention can be applied to various structures constituting a predetermined wall as well as application to the retaining wall, which is used to prevent the collapse of soil and the composition of the earth in a slope.

In addition, the present invention mainly describes an example of an 'L' shaped precast block in the drawings, but is not necessarily limited thereto, and a bottom portion supported on the ground as well as a reversed 'T' shaped precast block, as will be described later. The concept of the present invention may be variously applied as long as the shape includes a wall portion that is substantially upright.

2 is a perspective view showing a precast block according to the first embodiment of the present invention.

The precast block according to the concept of the present invention is basically a wall portion 200 which forms a predetermined wall surface, and a bottom portion which extends horizontally from the bottom of the wall portion 200 and is supported on the ground or foundation ( 300, and an upper plate 400 coupled to the upper surface of the bottom 300.

In the description of the present invention, the direction in which the wall part 200 is formed is in the height direction, and the width direction of the bottom part 300 is in the transverse direction, and the direction in which the wall part 200 of the upper plate part 400 faces the wall part 200. Define in the longitudinal direction to use.

The wall portion 200 may be formed in a predetermined plate shape as a whole and may function to support soil or predetermined members on one surface. The wall portion 200 may be formed integrally with the bottom portion 300 as a single member, as in the first embodiment of the present invention, may be made in a shape separated from the bottom portion 300 as will be described later Of course, a plurality of plate-shaped members may be formed by being coupled to each other.

Preferably, the wall part 200 is made of concrete including reinforcing bars, but the material is not necessarily limited thereto. In addition, the wall portion 200 may be formed in a pre-cast manner in the production process together with the bottom portion 300 and the upper portion 400 to be described later may be transferred to the construction site to form a retaining wall in a manner that is mutually coupled. .

The bottom surface portion 300 may extend substantially horizontally below the wall portion 200 so that the bottom surface can be supported with respect to the ground or foundation, and may be substantially plate-shaped.

In the concept of the present invention, the upper plate portion 400 is disposed in a shape substantially covering the upper surface of the bottom portion 300. According to this concept, the bottom surface of the upper plate portion 400 corresponds to the upper surface of the bottom portion 300. It is made in the shape.

The upper plate 400 may be formed in a manner that extends further in the longitudinal direction than the bottom portion 300 to form a base or a road surface of a road or a railway. According to the concept of the present invention, a predetermined flat surface is formed on the upper surface. The desired area can be freely formed according to the selection of the longitudinal length of the upper plate portion 400 to be formed, but it has the advantage of further improving the integrity with the retaining wall.

The length of the longitudinal direction in which the upper plate portion 400 is formed may substantially cover the end side of the bottom portion 300 at the connection portion between the wall portion 200 and the bottom portion 300 formed upwardly from the bottom portion 300. It may be formed to an extent that is, but is not necessarily limited to this, it is further extended in the longitudinal direction with respect to the bottom portion 300 may form a portion of a predetermined railway or road on the top. In addition, it may be composed of a plurality of members may be combined with each other and the bottom portion 300.

The wall portion 200 and the bottom portion 300 may be formed as a single body in the first embodiment of the present invention, in the form of a fixed cast and cured in a predetermined mold in a precast manner with the top plate 400 When transported to the construction site has the advantage that the workability can be improved.

Figure 3 is a side view showing the wall portion and the bottom portion in more detail than the upper plate portion in the precast block described above.

As described above, the wall portion 200 is formed in a substantially plate shape formed long in the height direction, and the height of the wall portion 200 may be selectively formed at the request of a supported portion at the construction site.

The bottom portion 300 extends from the lower side of the wall portion 200, and the cross section of the extension portion 320 is further improved in order to further improve the bearing force in the longitudinal direction with respect to the wall portion 200 of the bottom portion 300. It is preferable that the bottom portion 300 and / or the wall portion 200 have a thickness thicker than the thickness.

That is, the precast block 100 of the present invention includes an upright portion 330 extending in a substantially vertical direction from a portion of the bottom portion 300, and the wall portion 200 at an upper end side of the upright portion 330. ) May be formed in such a way that it is extended or fastened.

In addition, the extending portion 320 connecting the upright portion 330 and the bottom portion 300 to each other is formed in a shape inclined downward so as to support a load acting on the wall portion 200 in the lateral direction. desirable.

However, the above description is an example of the present invention, and the upright portion 330 may be formed as part of the bottom portion 300 or the wall portion 200, and the extension portion 320 may be omitted. to be.

The bottom portion 300 may be combined with the foundation or other members in the construction site, for example, in the same manner as concrete pouring, as will be described later, in the present invention to minimize the portion and the amount of pouring Provide a concept that can be

Accordingly, the bottom portion 300 is formed in such a way that the protrusion 310 extends upwardly and protrudes, and the protrusion 310 further improves the clamping force between the members during pouring to the pouring portion, as will be described later. can do.

The protruding portion 310 may be a part of the reinforcing bar formed inside the bottom portion 300, but is not necessarily limited thereto. The protruding portion 310 may be formed in various shapes depending on the selection if the structure can improve the bonding force when the concrete is placed.

In addition, as described above, the upper plate portion 400 may be formed in a shape covering most of the upper surface of the bottom portion 300, with respect to the shape and fastening process of the upper plate portion 400 and the bottom portion 300 is 2 and FIG. Explain based on 4.

4 is a side view illustrating a top plate in a precast block according to the first embodiment of the present invention.

As described above, the upper plate portion 400 may be disposed in a shape covering the upper surface of the bottom portion 300 at the bottom thereof, and the coupling may be formed, and the protrusions 310 of the bottom portion 300 may be exposed to the outside during the construction process. The pouring portion 410 may be formed to be a predetermined opening.

The pouring portion 410 accommodates the protrusion 310 of the bottom portion 300 in the interior space, and when the bottom portion 300 and the upper plate portion 400 are disposed in the construction process, the pouring portion ( The filling of the filling material that can be concrete or hardened in the space of the 410 may be made to firmly combine the top plate 400 and the bottom 300.

The pour portion 410 may be formed in a shape in which the inner circumferential surface is inclined downward for ease of pour construction, but is not necessarily limited thereto.

In addition, as described above, the upper or lower surface portion of the upper plate portion 400 may be formed to substantially correspond to the shape of the bottom portion 300, the extension portion in the connection portion of the bottom portion 300 and the upright portion 330 When the 320 is formed in a downwardly inclined shape, one end side of the upper plate part 400 has an upwardly inclined shape so as to correspond thereto, which has an advantage in enhancing adhesion to each other.

In addition, in order to further enhance the coupling force between the bottom portion 300 and the upper plate portion 400 to further improve the accuracy during construction, the other end side of the flat plate portion of the upper plate 400 further includes a stepped portion 420 extending downward The stepped portion 420 may be in close contact while supporting an end side of the bottom portion 300 from the inside.

The height of the step portion 420 may be substantially determined by the height of the bottom surface portion 300, except that the step portion 420 is omitted from the upper plate portion 400 and the pouring portion 410 is formed in the center as a whole. Of course, it may be made in a shape.

Referring to the construction process of the retaining wall using the precast block of the present invention as described above, the bottom portion 300 of the precast block 100 to the ground after forming a predetermined foundation directly or on the ground Alternatively, when the position is adjusted by supporting the foundation, the bottom portion 300 and the upper portion 400 are disposed to closely contact each other so that the protrusion portion 310 may be exposed to the pour portion 410 of the upper portion 400. Then, the mutual coupling is completed in such a way that the casting of a predetermined material is performed on the pouring portion 410. The fastening force of the upper plate portion 400 and the bottom portion 300 can be further strengthened by the protrusion 310 described above.

In addition, the upper plate portion 400 may further include a top plate tensioning member 311 disposed along the arrangement of the protrusions 310 to further improve the fastening force of the bottom portion 300.

The connection method may include a method of bolting by a PS steel wire and a steel bar, and preferably, the upper tension member 311 penetrates into a space formed by the protrusion 310 and provides tension in the construction process. It can be combined in a manner that will be described later in the description related to FIG.

Specifically, the protrusion 310 may be formed in a substantially closed curve in consideration of the coupling with the pour material and the arrangement of the upper tension member 311, and penetrates the space on the inner circumferential side of the upper tension member 311. The top plate tension member 311 may be disposed in a manner. The shape of the protrusion 310 may be variously made according to a selection such as 'c' or an arch shape. In addition, in the drawings, an example in which the protrusions 310 are arranged in a line is illustrated, but may be arranged in two or more rows, and the arrangement may be variously made according to a selection.

According to this concept, the top plate tensioning member 311 is disposed in such a manner as to penetrate the space between the protrusions 310 protruding from the bottom part 300, so that the site casting is performed after the arrangement of the precast block 100 is completed. If done, the mutual tightening force can be improved dramatically.

When the retaining wall is formed by the combination of the plurality of precast blocks 100, one upper plate tensioning member 311 may be disposed to cross the upper surface of the upper plate part 400 of the plurality of precast blocks 100. Of course.

However, the upper plate tensioning member 311 may further improve the firmness of the upper tensioning member 311 by providing a prestress in a process in which a plurality of precast blocks 100 are arranged. ) May be disposed in a manner that penetrates the upper plate 400 in the width direction.

5 is a perspective view showing a modification of the upper plate portion described above.

In the example of FIG. 4, an example in which the upper plate 400 is inclined downward in consideration of the ease of pouring in the shape of the pouring portion 410 is illustrated. In the example of FIG. 5, the inner circumferential side of the pouring portion 410 is upwardly inclined. An example photograph is described.

According to this concept, the cross section of the pouring portion 410 becomes wider toward the lower side, which means that the amount poured from the lower side becomes wider than the upper side. Accordingly, it should be noted that there is an advantage that the bonding force between the upper plate 400 and the bottom 300 may be further improved in the state where the protrusion 310 is interposed.

In addition, the upper tension member 311 may be disposed in the horizontal direction as a means for improving the coupling force between adjacent precast block 100 as described above, the upper tension member 311 is the upper plate portion 400 of the The upper surface may be fastened to a predetermined binding device such as a bracket (not shown) on both sides to provide prestress, but the upper plate portion 400 is preferably formed with a top plate communication hole 312 penetrating both sides for a more secure fastening. Do.

The embodiment of the transverse tension member (510 of FIG. 8) to be described below may be applied with respect to the provision and fixing of the tension force of the upper tension member 311 penetrating through the upper communication hole 312. Omit it.

5 shows an example in which two columns are formed in the upper plate communication hole 312, but the number of the arrangements may be varied according to a selection.

The structure of the wall portion 200, the bottom portion 300 and the top plate 400 according to the concept of the present invention has the advantage that the mobility and construction properties to the construction site is improved, while providing a rigidity as a retaining wall, the top plate 400 According to the selection of the flat surface of various areas and shapes can be formed and can be formed integrally with the retaining wall will have excellent advantages in terms of construction and economics.

6 is a perspective view illustrating an extended precast block of a retaining wall according to a second embodiment of the present invention.

In the second embodiment of the present invention, the precast block 100 may be additionally provided in consideration of the coupling with the adjacent precast block 100. The precast block 100 includes a bottom portion 300, a wall portion 200 extending upward from the bottom portion 300, and an upper plate portion 400 disposed to cover the top surface of the bottom portion 300. In this regard, a description overlapping with the first embodiment will be omitted.

In the second embodiment, unlike the first embodiment, an example in which the protrusions 310 are arranged in two rows in the longitudinal direction is illustrated, and the arrangement of the protrusions 310 may be variously made according to a selection.

In this case, the precast block 100 may be provided with a predetermined block communication hole (not shown), which penetrates in the horizontal direction, and a transverse tension member 510 may be disposed across the block communication hole.

The transverse tension member 510 is preferably made of any one selected from PS strands, PS steels, PS steel rods or continuous fiber reinforcement, provided that members of various shapes and materials are selected if prestress can be provided by tensile force. Can be.

The transverse tension member 510 functions to improve the rigidity of the retaining wall by connecting the adjacent precast blocks 100 to each other to improve the fastening force between them.

The transverse tension member 510 may be disposed as an optional number on the bottom portion 300 and / or the wall portion 200, preferably at both ends of the bottom portion 300 and / or the wall portion 200. On the side, a fixing groove 211, which is a predetermined space for fixing in a state where the transverse tension member 510 provides a tensile force, may be formed. The fixing groove 211 is a space in which a predetermined fixing member fixes both ends or a portion of the transverse tension member 510 to the bottom portion 300 and / or the wall portion 200 as will be described later with reference to FIG. 8. Will be prepared.

As described above, the transverse tension member 510 may be selectively disposed on the bottom portion 300 and the wall portion 200, and an extension portion 320 that is a connection portion between the bottom portion 300 and the wall portion 200. It is also preferably disposed in the space of the inside, where a portion of the extension 320, the binding groove 301, which is a predetermined opening through which a portion of the transverse tension member 510 can be exposed may be formed. Of course.

On the other hand, predetermined concave and convex (凹凸) may be provided on the side for accurate assembly and close contact in the assembling construction process between the adjacent precast block 100, this will be described later.

7 is an enlarged cross-sectional view of a side of a precast block according to a second embodiment of the present invention.

As described above, protruding protrusions 301 are formed at one side of one precast block 100 in order to improve the accuracy and adhesion of the precast blocks 100 from each other, and at the other side of the groove shape. Grooves 302 may be formed.

The protrusion 301 and the groove 302 may be selectively formed at a portion of the side of the bottom portion 300, the wall portion 200, or the upper plate portion 400, or may be disposed in a shape that extends along the side. Of course.

In addition, the shape of the protrusion 301 and the groove 302 is shown in the drawing is an example of an approximately arc shape, but is not necessarily limited thereto.

In the assembling process of adjoining the precast block 100 from each other according to this structure, the protrusions 301 formed on one side of one precast block 100 of the adjacent precast block 100 The assembly can be made accurately by inserting the groove 302 formed on the other side.

The protrusions 301 and the grooves 302 are provided with the advantages of accurate assembly, as well as the prevention of undesired inflow and outflow of the flowable material at the connection portion. In order to improve the function of the sealing, the protrusions ( The sealing member 341 may be additionally disposed at a portion in close contact between the 301 and the groove 302.

The sealing member 341 may be selectively used a material having a predetermined ductility or a material that can be cured in the construction process.

In addition, the cover member 342 may be further provided to cover one surface of the connection portion of the precast block 100 in order to further improve the function of sealing or waterproofing at the connection portions of the precast blocks 100.

The cover member 342 is preferably made of a predetermined plate or sheet shape, and is made of a material having a waterproof function.

The cover member 342 may be mainly disposed on the front or rear of the wall portion 200, but is not necessarily limited thereto, and may also be disposed at the connection portion of the bottom portion 300 or the upper plate portion 400.

Figure 8 is a front sectional view showing a fixing portion of the tension member in the precast block of the present invention.

As described above, the transverse tension member 510 may be disposed across the precast block 100, and may be, for example, PS wires at both ends of the wall portion 200 and / or the bottom portion 300. The transverse tension member 510 may be fixed while providing a tensile force.

Therefore, the fixing groove 211 is provided with a predetermined fixing space therein, and is configured to secure a portion of the transverse tension member 510 and to support the tensile force. A fixing member 520 coupled to the outer circumferential side of the tension member as a member capable of supporting the tensile force may be provided to be fixed to the inner wall of the fixing groove 211.

In addition, a plate-shaped plate portion 521 may be further provided between the inner wall of the fixing groove 211 and the fixing member 520 so as to more securely fix the fixing member 520. .

In the drawing, an example is shown in which the fixing grooves 211 formed at both ends of the wall parts 200 adjacent to each other are disposed in such a state that the transverse tension members 510 are exposed in the interior space while facing each other. However, the present invention is not limited to the example illustrated in the drawings, and the fixing structure may be formed at a portion providing the tension force of the bottom portion 300 or the upper portion 400.

FIG. 9 is a perspective view illustrating a state in which precast blocks are connected to each other to form a precast retaining wall as described above in the second embodiment of the present invention.

The process of constructing the precast retaining wall by combining the above-described precast block 100 will be described in more detail with reference to FIG. 9.

The bottom part 300 and the wall part 200 of the precast block 100 may be assembled to be in close contact with the adjacent precast block 100 from the side, and in this process, the precast block 100 described above. As described above, the reliability of the assembly and the certainty of the sealing can be provided in such a manner that the protrusion 301 on one side of the side is inserted into the groove 302 on the other side of the adjacent precast block 100.

In the process in which the precast block 100 is arranged, the upper plate portion 400 is disposed on the upper portion of the bottom portion 300, and the protrusions 310 are disposed to be exposed to the pouring portion 410. The same pouring member may be injected into the pouring portion 410 to provide a bonding force between them.

In this process, a predetermined tension member is provided to provide a fastening force between adjacent precast block 100, the upper tension member 311 is inserted into the upper plate communication hole 312 penetrating the upper plate portion 400 to both sides and In addition, the transverse tension member 510 may be inserted into the block communication hole (not shown) formed in the wall portion 200 and / or the bottom portion 300.

These tension members may be fixed to the precast block 100 by a fixing member 520, such as a predetermined PC fixing cone, and is provided with a tensile force to one side in a state where it is inserted into a predetermined hole, so that a predetermined tension may be obtained. It is fixed in the made state can further improve the fastening force between the precast block 100.

The tension of the tension members may be made by the tensioning device 600 at one side, the tension device 600 may be made of a hydraulic tensioning device, but is not necessarily limited thereto.

10 is a perspective view of a precast block according to a third embodiment of the present invention.

The third embodiment of the present invention proposes a concept in which the precast block 100 is coupled in such a manner that the wall portion 200 and the bottom portion 300 are fastened to each other at the time of construction on site.

Descriptions overlapping with the above-described embodiments regarding the coupling between the upper plate portion 400, the bottom portion 300, and each other during the pouring will be omitted.

In the third embodiment of the present invention, the wall portion 200 is composed of two or more walls coupled to each other in the height direction, and thus the precast units are the upper plate portion 400, the bottom portion 300, and the plurality of walls. Formed to be able to be fastened to each other at the construction site.

10 illustrates an example in which the wall part 200 is coupled to the first wall 201 and the second wall 202 in the height direction, but the shape, number, and fastening method of each wall must be the same. It is not limited. Also, a plurality of walls may be arranged laterally and fastened to each other.

FIG. 11 is an exploded perspective view of a precast block according to the third embodiment of FIG. 10, which will be described in more detail with reference to FIG. 10.

As described above, the bottom surface part 300 may include an upright part 330 extending upward from one end side and coupling the wall part 200, and the wall part 200 at an upper end side of the upright part 330. ) Is coupled but the longitudinal tension member 500 may be inserted in such a manner as to penetrate the walls to provide a fastening force between the wall portion 200 and the upright portion 330.

Specifically, the wall portion 200 may include the first wall 201 and the second wall 202 or additional walls, the coupling is formed in the height direction between each other and the wall disposed at the bottom is the lower portion Coupling with the upper end of the upright portion 330 at the side can be made.

As described above, the longitudinal tension member 500 may be disposed in such a manner that the longitudinal tension member 500 penetrates for coupling between the members provided in the vertical direction. It may be made in the shape of a steel wire, but is not necessarily limited thereto. With regard to the material and shape of the longitudinal tension member 500 and the structure of the fixing, examples of the transverse tension member 510 and the upper tension member 311 may be applied or mutatis mutandis.

In addition, a predetermined hole penetrating the first wall 201, the second wall 202, and the upright part 330 may be formed, and a longitudinal tension member 500 may be penetrated through the holes. Certain protrusions (not shown) may be formed at the upper end and / or the lower end of the member, such that the fastening may be performed in a manner of being inserted into a groove formed at a portion opposite thereto. The protrusion fastening part may be an example of the protrusion 301 and the groove part 302 of the side of the precast block 100 in the above-described second embodiment.

The first wall 201 may be formed with a wall insertion hole 221 formed in at least one height direction, and correspondingly, the wall insertion hole 221 is formed in the second wall 202 in at least one height direction. It may be formed, and also corresponding to the wall insertion holes 221, the insertion hole 331 in the height direction in the upright portion 330 formed in the bottom portion 300, more specifically the bottom portion 300 This can be formed. However, the upright part 330 may be omitted, and the wall part 200 may be directly coupled to the upper side of the bottom part 300 which is substantially flat.

Therefore, the longitudinal tension member 500 is disposed in such a manner as to penetrate the wall insertion hole 221 and the insertion hole 331 to provide a mutual tightening force.

In addition, the upper and / or lower ends of the upright portion 330 and the walls may include predetermined protrusions and grooves (not shown) for positioning at the correct position at the time of fastening.

In addition, a groove portion 332 corresponding to the shape of the bottom surface of the second wall 202 may be formed at an upper end of the upright portion 330 to fix an accurate position between the upright portion 330 and the wall disposed at the lowermost portion. It may be provided.

The recess 332 has a predetermined groove shape, and a part of the lower end side of the second wall 202 is inserted to guide the outer peripheral surface of the lower end side of the second wall 202 while the bottom surface of the recess 330 is erected. In order to be in close contact with the bottom of the groove 332.

12 is a plan view showing a preferred embodiment of the wall portion described above.

In the case of the precast block according to another embodiment of the present invention described above, the wall part 200 is formed through the coupling of the height direction between the first wall 201 and the second wall 202 or additional walls. Since the coupling of the walls and the coupling of the wall portion 200 and the bottom portion 300 are made in such a manner that the longitudinal tension member 500 is inserted, the thickness of the portion where the wall insertion hole 221 is formed is more than that of other portions. It is preferable to be thick.

Therefore, the wall portion 200 includes a wall portion 210 that supports the load on one surface, and a protrusion 220 that protrudes from the other surface of the wall surface portion 210 and has a wall insertion hole 221 therein. It can be done by.

The wall part 200 according to the above-described preferred embodiment may be formed in a flat surface shape when viewed from one side, and is formed in an uneven shape when viewed from the other side. It should be noted that there is an advantage that the durability of the wall part 200 may be further strengthened by the shape of the longitudinal tension member 500 and the irregularities inserted into the wall part 200 according to this concept.

13 is a perspective view showing a state in which a precast retaining wall is constructed by a precast block according to a fourth embodiment of the present invention.

In the fourth embodiment of the present invention, an example in which the wall part 200 includes the first wall 201, the second wall 202, the third wall 203, and the fourth wall 204 is illustrated. It doesn't happen.

Here, the precast blocks 100 are mutually adjacent and fastened in the transverse direction, and the members of the wall part 200 are coupled to each other and in the longitudinal direction with the bottom part 300. In the fourth embodiment, the transverse tension member 510, the upper tension member 311, and the longitudinal tension member 500 may be provided.

Specifically, the transverse tension member 510 may provide a tension force through the block communication hole formed in the bottom portion 300 and / or the wall portion 200, and the longitudinal tension member 500 may insert a wall. Tension force may be provided through the hole 221 and the insertion hole 331. However, the transverse tension member 510 and the longitudinal tension member 500 are not necessarily limited to the example in which the predetermined tension is made in a state in which a predetermined tension is made, and for example, the steel bar may be inserted and fixedly coupled. have.

In addition, the top plate tensioning member 311 is inserted into the top plate communication hole 312 and can be disposed through the space inside the pouring portion 410 bar, when the interior is made with the protrusions 310 Fastening force of the upper plate portion 400 and the bottom portion 300 and the coupling force between the upper plate portion 400 can be further improved.

The tension members are precast block 100 is disposed, the tension member is fixed to one side of the precast block 100 in a state where a predetermined tension is made by the tensioning device 600 in the state is inserted into the predetermined holes It will further improve the rigidity of the retaining wall.

Referring to the construction method of the expandable retaining wall 1000 using the precast block 100 according to the embodiments of the present invention described above, the bottom surface portion 300 is disposed on the ground or foundation and the bottom portion ( A top plate arrangement step in which the top plate portion 400 is disposed on the top surface of the 300 may be included, and a casting step in which concrete is poured around the pour portion 410 formed on the top plate portion 400.

As described above, the top plate 400 may be provided with a pour portion 410 in an opening shape for improving the bonding force during pouring, and the protrusions 310 may be exposed to further improve the fastening force therebetween.

In addition, when the precast block 100 of the third and fourth embodiments of the present invention is applied, the first wall 201 and the second wall 202 and the bottom portion 300 which are a plurality of walls after the seating step are applied. It may further include a fastening step to place in the height direction and penetrate the longitudinal tension member 500, the longitudinal tension member 500 is disposed through the wall insertion hole 221 and the insertion hole 331 It may be as described above. More specifically, when the wall portion 200 is coupled to the upper side of the upright portion 330 which is disposed on one side of the bottom portion 300 and extends upward, the fastening force may be improved by the mutual longitudinal tension members 500. have.

In addition, the top plate tensioning member 311 to traverse the arrangement of the protrusions 310 exposed to the pour portion 410 of the top plate 400 to provide a coupling force of the top plate 400 and the bottom portion 300 It may further include a connecting step to be arranged, the description overlapping with the above will be omitted.

Since the expanded precast block of the retaining wall of the present invention described above includes a wall portion, a bottom portion, and a top plate portion, each of the units can be formed in a manner that is prefabricated, transported, and constructed in the field in a precast manner. The workability and mobility are improved.

In particular, when the wall portion is composed of a plurality of walls, there is an advantage that can solve the inconvenience of transportation due to the restriction of the height at the time of transfer to a transport means, such as a truck, and problems caused by loading and overload between the transfer.

In addition, since the bottom part is arranged in such a way as to cover the top plate, construction of fastening and pouring is performed in the field, thereby improving the rigidity of the retaining wall and minimizing the requirement of hardened materials such as concrete that is poured in the field. There is an advantage that can be significantly shortened.

In the foregoing, the present invention has been described in detail based on the embodiments and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the content of the following claims.

100 Precast block 200 Wall part
201 ... the first wall 202 ... the second wall
210 Wall section 211
220 Projection part 221 Wall insertion hole
300 ... base 301 ... dol
302 Grooves 311
310.Stop part 311 ... Top tension member
312 Top plate communication hole
341 Sealing member 342 Cover member
400 ... Top part 410, 411 ... Pour part
420 ... step 430 ... slope
500 ... longitudinal tension member 510 ... transverse tension member
520 Fixing element 521 Plate part
600 ... tensile device 1000 ... precast retaining wall

Claims (16)

  1. A bottom part supported against the ground or foundation;
    A wall portion formed in the vertical direction from the bottom portion; And
    And an upper plate portion disposed to cover the upper side of the bottom portion and having a pour portion having a vertically penetrated shape in which pour is formed therein.
    The bottom portion, the wall portion and the upper plate portion is formed by a precast method,
    The upper plate is formed in a manner extending in the longitudinal direction more than the bottom portion, it is made of a height corresponding to the height of the bottom portion and characterized in that it has a stepped portion extending downward so that the end side of the bottom portion is in close contact with the inner surface Expandable precast block on retaining wall.
  2. The method of claim 1,
    The bottom part is an extension precast block of the retaining wall, characterized in that it has a protrusion protruding upward to be accommodated in the space inside the pouring portion to strengthen the coupling of the top plate and the bottom portion when the filling material is injected.
  3. 3. The method of claim 2,
    The protrusions are arranged in the transverse direction,
    And an upper plate tensioning member disposed to cross the array of the upper plate and the protrusion.
  4. The method of claim 3,
    The protruding portion of the retaining wall is characterized in that the protrusion is arranged in two rows in the longitudinal direction.
  5. delete
  6. The method of claim 1,
    The wall portion, the expansion type precast block of the retaining wall, characterized in that the plurality of walls are fastened to each other formed in the height direction.
  7. The method according to claim 6,
    And a longitudinal tension member disposed to penetrate the plurality of walls and the bottom portion in a longitudinal direction.
  8. The method of claim 7, wherein
    The bottom surface portion is formed in a shape corresponding to the bottom surface of the wall portion, the expansion precast block of the retaining wall, characterized in that it comprises a groove portion into which a portion of the lower end side of the wall portion is inserted.
  9. The method of claim 1,
    And a transverse tension member disposed to penetrate the wall portion or the bottom surface in a transverse direction.
    The transverse tension member is an expanded precast block of a retaining wall, characterized in that to provide a tension force arranged in a state passing through the adjacent precast blocks.
  10. The method of claim 1,
    The wall portion is provided with a protrusion protruding from one side and the expansion precast block of the retaining wall, characterized in that it has a groove corresponding to the protrusion on the other side.
  11. The method of claim 10,
    And a sealing member interposed between the protrusion of one precast block and the groove of the adjacent precast block.
  12. 12. The method of claim 11,
    An extension precast block of a retaining wall, further comprising a cover member disposed to cover a front surface or a rear surface of a connection portion of an adjacent precast block.
  13. A method of constructing a retaining wall using the precast block according to any one of claims 1 to 4 and 6 to 12,
    A seating step in which the bottom portion is disposed on the ground or base;
    An upper plate disposing step in which an upper plate is disposed on an upper surface of the bottom portion; And
    A method of constructing a retaining wall using an expandable precast block, comprising: a pouring step in which concrete is poured around a pouring part formed on the upper plate.
  14. The method of claim 13,
    After the seating step,
    And a fastening step of arranging the plurality of walls and the bottom portion in the height direction and penetrating the longitudinal tension members.
  15. The method of claim 13,
    After the top layout step,
    And a connecting step of arranging the top plate tensioning member so as to traverse the arrangement of the protrusions exposed to the pouring portion of the top plate portion.
  16. The method of claim 13,
    A plurality of precast blocks are in close contact with each other, the transverse tension member is disposed through the plurality of precast blocks; Construction method of the retaining wall using an extended precast block, characterized in that it further comprises.
KR1020130000740A 2013-01-03 2013-01-03 Precast block of retaining wall and construction method using thereof KR101315290B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101405088B1 (en) 2013-11-20 2014-06-11 삼호코넨(주) Assembled Precast Concrete Retaining Wall, and Constructing Method thereof
KR101545936B1 (en) * 2015-04-14 2015-08-20 김성 Precast wall structure construction
KR101696854B1 (en) 2016-01-01 2017-02-01 (주)나우기술 Various assembling construction methods of E shaped precast concrete block retainning wall
KR20170014570A (en) * 2015-07-30 2017-02-08 원광대학교산학협력단 Building Construction Method Using PC Wall With Foundation Structure
KR20170100886A (en) * 2016-02-26 2017-09-05 주식회사 케이씨산업 Retaining wall block using pc and cast-in-place concrete, and construction method of retainging wall structure using the same

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JPH0988099A (en) * 1995-09-26 1997-03-31 Landes Kk Mounting structure of precast concrete product
KR200192035Y1 (en) * 2000-03-07 2000-08-16 주식회사우대기술단 Retaining wall using precast concrete block and precast concrete block thereof
KR200286645Y1 (en) * 2002-04-17 2002-08-21 주식회사 엠디건설 a joint structure of building using anchor and plate
KR101138915B1 (en) * 2011-09-30 2012-05-14 아리텍이엔씨 주식회사 Retaining wall

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0988099A (en) * 1995-09-26 1997-03-31 Landes Kk Mounting structure of precast concrete product
KR200192035Y1 (en) * 2000-03-07 2000-08-16 주식회사우대기술단 Retaining wall using precast concrete block and precast concrete block thereof
KR200286645Y1 (en) * 2002-04-17 2002-08-21 주식회사 엠디건설 a joint structure of building using anchor and plate
KR101138915B1 (en) * 2011-09-30 2012-05-14 아리텍이엔씨 주식회사 Retaining wall

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101405088B1 (en) 2013-11-20 2014-06-11 삼호코넨(주) Assembled Precast Concrete Retaining Wall, and Constructing Method thereof
KR101545936B1 (en) * 2015-04-14 2015-08-20 김성 Precast wall structure construction
KR20170014570A (en) * 2015-07-30 2017-02-08 원광대학교산학협력단 Building Construction Method Using PC Wall With Foundation Structure
KR101709858B1 (en) * 2015-07-30 2017-02-23 원광대학교산학협력단 Building Construction Method Using PC Wall With Foundation Structure
KR101696854B1 (en) 2016-01-01 2017-02-01 (주)나우기술 Various assembling construction methods of E shaped precast concrete block retainning wall
KR20170100886A (en) * 2016-02-26 2017-09-05 주식회사 케이씨산업 Retaining wall block using pc and cast-in-place concrete, and construction method of retainging wall structure using the same
KR101897506B1 (en) * 2016-02-26 2018-09-12 주식회사 케이씨산업 Retaining wall block using pc and cast-in-place concrete, and construction method of retainging wall structure using the same

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