KR20220100121A - Prefabricated retaining wall block and retaining wall construction method - Google Patents

Abstract

The present invention relates to a block for constructing a retaining wall having a coupling protrusion and a coupling groove at the side surface. A first block unit (100) for constructing a retaining wall has a first protrusion (1) and a second protrusion (2) formed at one side portion as an interlocking structure. A coupling groove (3) formed therebetween the first protrusions (1, 2) thereby and the first protrusion (1) are inclinedly formed. At the other side portion, in order to be vertically gear-coupled to the coupling groove of the first and second protrusions and the coupling groove at one side portion of the adjacent first block unit for constructing a retaining wall, a first protrusion (11) and a second protrusion (12) which are in a point symmetrical shape and coupling grooves (13) formed therebetween are formed to be constructed, such that the block units may be vertically assembled to be fixed in gear-coupling with each other. Therefore, a retaining wall may be solidly constructed without an additional fixing means or connecting means. The retaining wall can be constructed in a simple method, thereby improving work efficiency. The curved surface portion of the retaining wall can be freely constructed. A conventional reinforcing means such as a geogrid may be conveniently fixed between the upper and lower block units by the gear-coupling without an additional fixing means. Furthermore, as the block units with different heights from each other are assembled and constructed, supporting force with respect to the lateral displacement of the retaining wall may be increased.

Description

Prefabricated retaining wall block and retaining wall construction method

When the retaining wall is built with the prefabricated retaining wall block as described above, the geogrid normally used in order to increase the resistance to earth pressure is installed on the rear side of the retaining wall for construction. 22), the retaining wall block and a plurality of horizontal bars and vertical bars are connected to form an oval fastening hole and laminated retaining wall blocks are used.

An assembly for a reinforcing earth retaining wall having a geogrid installed between them to generate frictional force with soil, pull-out resistance, and shear stress is disclosed. By placing the fixing bar in the groove formed on the upper surface of the block and masonry other blocks on it, the geogrid is fixed, and there is a problem that the construction period of the retaining wall is prolonged. There was a problem that it didn't exist.

In addition, in the conventional retaining wall block, the support rigidity could be reinforced by the reinforcing core installed through the blocks in the vertical direction. In the end there was a problem of collapse

It is to improve the problem of the conventional retaining wall block, to provide a retaining wall block having an improved shape so that adjacent blocks are masonry in an interlocking manner to increase the bonding to each other.

It is an object of the present invention to provide a retaining wall block having improved assembling properties so that it can be masonry in various shapes to provide the rigidity required for the retaining wall according to the construction environment of the retaining wall. Another object of the present invention is to provide the retaining wall block. It is to provide a retaining wall construction method that can be used to build a retaining wall more firmly and has improved construction efficiency.

In order to achieve the above object, the block for building a retaining wall according to the present invention is a block for building a retaining wall having a protrusion for engaging and a groove for engaging on a side surface, wherein the first block unit for constructing a retaining wall is formed as an engaging structure on one side. The first protrusion and the second protrusion are inclined with respect to the front surface, and a coupling groove is formed therebetween by the first and second protrusions, and the other side is perpendicular to the first and second protrusions and the coupling groove of the one side. The first and second projections having a point symmetrical shape and coupling grooves formed therebetween are formed so as to be engaged with each other to construct the retaining wall. In the first block unit, the shapes of the first protrusion, the inclined surface, the groove, and the engaging groove of one side are repeatedly formed at a position rotated at a predetermined angle, and the inclined surface and the groove, the engaging groove and the second protrusion corresponding to the inclined surface following the second protrusion are repeatedly formed. is formed on the back side, and a protrusion is formed on the second protrusion on the rear end of the inclined surface from the other side, and a protrusion is formed in the transverse direction on the upper surface of the first block unit, while a concave portion is formed on the bottom surface corresponding thereto to vertically The protrusion and the concave portion of the adjacent first block unit are combined and constructed, and the geogrid for reinforcing the retaining wall installed between the upper and lower first block units is fixed by engagement of the concave portion of the bottom surface of the adjacent block unit of the protrusion. Preferably, the upper surface of the first block unit may have longitudinal grooves spaced apart from each other and horizontal grooves formed therebetween to fix the wire grid for reinforcing the retaining wall.

The first protrusion, the second protrusion formed on the inclined surface, the groove and the end of the inclined surface in the same shape and arrangement as the shape and arrangement of the groove, the first protrusion, the coupling groove, and the second protrusion of the inclined surface formed on one side of the first block unit, and the formed A second block unit in which the shape and arrangement of the coupling grooves are further repeatedly formed backward, and the same structure as the shape of one side is formed on the other side in point symmetry to be coupled with the first block unit, and the first block unit It may further include a third block unit having the same interlocking structure on both sides of the structure formed on both sides and having a reduced transverse length and engaged with the first and second block units. The retaining wall construction method according to the present invention includes a first The other first block unit engages the inclined first and second protrusions and the engaging grooves and grooves on one side of the block unit with the inclined engaging grooves, the first protrusions, the second protrusions and the grooves of the other side of the adjacent first block unit. and assembling and constructing the block units in at least one row by inserting the block units from top to bottom. At least one second block unit is vertically arranged on at least one side of the first block unit, and the engaging structure of both sides thereof is described above. It can be constructed by combining with the first block unit. In addition, a geogrid is arranged to extend behind the retaining wall between the upper and lower first block units to be built, and a transverse protrusion formed on the upper surface of the lower first block unit and the upper side It can be installed by fixing the geogrid to interlock between the grooves formed on the bottom surface of the first block unit of the By combining the block unit and the second block unit, it can be assembled in a box shape.

In addition, in order to construct the curved portion of the retaining wall, a plurality of third block units may be continuously assembled by displacing the coupling angle of the first and second protrusions and the coupling groove on the side of the first block unit by a preset angle. When constructing a retaining wall, block units having different heights are assembled adjacent to each other at least laterally so that the upper block unit and the lower block unit prevent slipping in the horizontal and lateral directions with respect to each other to have a lateral bearing capacity. Corresponding projections, engaging grooves, and first projections and grooves may be formed.

According to the present invention, the first, second, and third block units are formed in an interlocking structure, and the block units are vertically assembled and fixed by interlocking with each other. Since the retaining wall can be built, there is an effect that the working efficiency is improved. In addition, there is an effect that the curved portion of the retaining wall can be freely constructed by combining the block units according to the present invention. In addition, it is possible to simply fix the reinforcing means, such as a conventional geogrid, by interlocking between the upper and lower block units without a separate fixing means. By assembling block units of different heights and building them, it is possible to increase the bearing capacity for lateral displacement in the retaining wall.

1 is a perspective view of a first block unit for the construction of a retaining wall according to the present invention.
Figure 2 is a bottom perspective view of the first block unit of Figure 1;
Fig. 3 is a plan view of the first block unit of Fig. 1;
Figure 4 is a plan view of the second block unit for the construction of a retaining wall according to the present invention.
Figure 5 is a plan view of the third block unit for the construction of a retaining wall according to the present invention.
6 is a plan view showing an example of a retaining wall construction in which the first block units of FIG. 1 are engaged with each other in the lateral direction;
7 is a plan view showing a construction example of a retaining wall in which the first block unit of FIG. 1 and the second block unit of FIG. 2 are combined.
8 is a schematic cross-sectional view showing that the geogrid installed during the construction of the retaining wall of FIG. 6 is interlocked and fixed between the upper and lower block units.
9 is a plan view showing a retaining wall construction example showing that a box-type support is built on the retaining wall using the first and second block units;
10 is a plan view showing the construction of a curved retaining wall portion with a third block unit.
11 is a plan view illustrating the construction of a retaining wall having a different curved surface as a modification of FIG. 10 .
12 shows a retaining wall construction example in which lateral bearing capacity is increased by assembling blocks for retaining walls of different heights.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing embodiments of the present invention. 1 to 3, the first block unit 100 for constructing a retaining wall according to the present invention has an engaging structure on one side, and an engaging structure is formed on both sides with respect to the front surface constituting the front surface of the retaining wall, and one side has the front surface in an inclined direction with respect to

The first protrusion 1 and the second protrusion 2 are formed, and the coupling groove 3 is formed between the first and second protrusions 1 and 2 . The shape of the coupling groove 3 is the same as the cross-sectional shape of the first protrusion 1, so that the first protrusion of the adjacent block unit is vertically inserted and assembled. The first protrusion 1 leads to the inclined surface 5 toward the front, and a groove 6 is formed in which the second protrusion 2 of the block unit adjacent to the inclined surface 5 engages.

In addition, on the other side of the first block unit 100, a corresponding engaging structure that can be combined with the engaging structure of the one side described above is formed. That is, the first protrusion 1 and the second protrusion 2, the first protrusion 11 and the second protrusion 12 and the engaging groove 13 therebetween are formed in point symmetric shape with the engaging groove 3 do. With this structure, in the coupling groove 3 of one side of the first block unit 100, the first protrusion 1 of the other side of the first block unit 100 ′ disposed adjacently in FIG. 6 is vertically fitted. On the other hand, the first protrusions 1 on one side of the block unit 100 are vertically fitted into the coupling grooves 13 of the other side of the adjacent first block unit 100' and are engaged by engaging with each other. The second protrusion 12 of the other side of the first block unit 100' is engaged with the groove 6 formed in the inclined surface 5 of the first block unit 100 on one side. The second protrusion 12 of the other side is formed at the end of the inclined surface 15 inclined from the front, and the inclined surface 5 of one side of the first block unit 100 is rearward from the first protrusion 11 . ) and the groove 6, the inclined surface 17 and the groove 18 are formed at a point symmetrical position with the same structure. The inclined surface 5 of the one side and the inclined surface 17 of the other side are made parallel to each other.

The first protrusion 1 and the second protrusion 2 are formed to be inclined at a predetermined angle with respect to each other, and arranged at 90 degrees in the embodiment shown in the drawings, and the inclined surfaces 5 and 15 are located on the front surface of the block unit. formed at an angle to the The inclined surface 5 on which the first protrusion 1 is formed at the end is formed parallel to the inclined surface 17 on which the first protrusion 11 of the other side is formed. Accordingly, since the protrusions and coupling grooves of the first block units 100 and 100' adjacent to each other are vertically fitted and coupled to each other, the block units coupled to each other cannot move relative to each other in the lateral or front-back direction, not in the vertical direction. The meshing engagement is not released in the horizontal direction. Accordingly, the retaining wall can be firmly built by engaging the block units together without using a separate connecting means as in the prior art. The first protrusion (1) and the inclined surface (5) of the first block unit (100) , the shape of the groove 6 and the coupling groove 3 is repeatedly formed at a position rotated by 90° backward, and on the rear side, the inclined surface 5' corresponding to the inclined surface 5 followed by the second projection 2 ), a groove 6', a coupling groove 3', and a second protrusion 2' are formed, and this arrangement is the same on the other side on the opposite side to the second end of the rear side of the inclined surface 17. A projection 12' corresponding to the projection, a coupling groove 13', and a first projection 11' and a groove 18' are formed, and the second projection 2' is connected in a plane. . Accordingly, since the first block unit and other block units to be described later may be engaged and coupled to the rear side of the first block unit 100, a retaining wall may be constructed by combining the first block units in two or more rows if necessary. . On the upper surface of the first block unit 100, protrusions 20 protruding upward at both ends in the transverse direction are formed, and on the bottom surface of the position corresponding to the protrusions, grooves 22 as much as the depth of the protrusions 20. ) is formed, and the upper surface also has longitudinal grooves 21 spaced apart from each other, and a horizontal groove 23 is formed between the ends of the two grooves 21 to be described later. It can be reinforced by hanging a wire grid from the rear of the retaining wall constructed in the spaced apart longitudinal grooves 21 and the central horizontal grooves 23 as described above. Accordingly, when the first block unit 100 is vertically stacked, the protrusions 20 of the upper surface are recessed portions as shown in the bottom view of FIG. 22. FIG. 4 shows a second block unit 200 that can be used by being coupled to the side or rear side of the first block unit 100. As shown in FIG. The second block unit 200 has a structure formed by repeating a structure shaped on both sides of the first block unit 100 backward. That is, the groove 5 and the first protrusion 1, the coupling groove 3, the second protrusion 2, the inclined surface 5' of the inclined surface 5 formed on one side of the first block unit 100, that is, on the left side. ), the same shape and arrangement of the grooves 6' and the first protrusions 1' and the coupling grooves 3' are repeated on the right side of the second block unit 200 equally and at regular intervals. to have an interlocking structure formed by That is, on one side of the second block unit 200, that is, on the right side, the inclined surface 205 and the groove 206 formed therein, the first projection 201 formed at the end of the inclined surface 206, and the first projection are adjacent to each other. The formed engaging groove 203 and the second protrusion 202 are spaced apart from each other by a predetermined distance, and the shapes and arrangements of the inclined surface, the groove, the first protrusion, the engaging groove and the second protrusion are repeatedly formed. On the other side of the block unit 200, that is, on the left side, the left side of the first block unit 100 has an inclined surface 15, a second projection 12, a coupling groove 13, a first projection 11, and an inclined surface 17. , has an engaging structure in which the same arrangement shape as the groove 18 and the second protrusion 12 ′ is repeated rearwardly at regular intervals. Accordingly, the groove 206, the first protrusion 206, the coupling groove 203 and the second protrusion 202 on the right side of the second block unit 200 are respectively shown in FIG. 1 of the first block unit 100. The second protrusion 12 on the left side, the coupling groove 13, the first protrusion 11, and the groove 18 of the inclined surface 17 are respectively fitted vertically downwardly and engaged by engaging. The second block unit 200 is assembled by engaging the structure on the right side of the other first block unit 100 on the left side. At least one through hole 35 may be formed in the first and second block units. In addition, the first and second block units 100 and 200 are coupled to the second block units on the rear side thereof, or Korea Registered Patent No. 10-1501930 registered by the present applicant (registered on March 06, 2015) A retaining wall is constructed by combining the retaining wall blocks disclosed in

can do. In addition, as shown in FIG. 5, the present invention may further include a third block unit 300 having the same engagement structure on both sides as the first block unit 100 and having a relatively reduced transverse length. have. The third block unit 300 has one side thereof, that is, the configuration of the groove 306, the first projection 301, the coupling groove 303, and the second projection 302 of the inclined surface 305 on the right side in the drawing. The first and second projections, coupling grooves and grooves of the left part of the first and second block units can be vertically engaged and engaged in a point-symmetric shape, while the shape on the left is the right part of the first and second block units It has a shape that can be meshed with the first and second block units and can be assembled with the first and second block units. The first to third block units can be built with different heights, for example, by stacking block units of the same height with each other. When the upper block unit is masonry with the first block units (100, 500) formed with different heights as shown in FIG. Then, horizontal slip can be prevented by adjacent block units. Hereinafter, a construction method for constructing a retaining wall using the first to third block units will be described. First, as shown in FIG. 6 , the first, The coupling groove 13, the first projection 11, the second projection ( 12) and grooves (18)

Assembled in one line or more lines in such a way that the other first block units 100' are inserted from the top to the bottom so as to be bitten. At this time, according to the construction environment, the other first block unit, the second block unit, or the third block unit may be assembled behind the first block units 100 and 100 ′ in the above-described interlocking manner. As another embodiment in FIG. 7 , the retaining wall can be constructed more firmly by vertically arranging the second block unit 200 on both sides of the first block unit 100 and combining the engaging structures of both sides thereof. 6 and 7, a geogrid 400 or a wire grid 410 fixed to the rear side of the retaining wall is provided between the upper and lower first block units 100 to be constructed as shown in FIG. By installing them together, it is possible to increase the bearing capacity for the earth pressure of the constructed retaining wall. At this time, when the geogrid 400 is installed past the transverse protrusion 20 formed on the upper surface of the first block unit 100 on the lower side, and another first block unit 100 is assembled thereon, the concave portion of the bottom surface As the protrusion 20 is inserted into the (22), the geogrid 400 is engaged between the protrusion 20 and the concave portion 22, and is fixed separately by the weight of the first block units that are continuously built upward. The geogrid can be stably fixed without any means, and the friction between the geogrid and the soil allows the retaining wall to support the earth pressure, thereby increasing the earth pressure bearing capacity of the retaining wall.

In addition, instead of the geogrid, the wire grid 410 is fixed to the rear side of the retaining wall by hanging through the spaced apart longitudinal grooves 21 and the central groove 23 formed on the upper surface of the first block unit 100 to fix the retaining wall. can be reinforced. At this time, the upper surfaces of the concave portions 21 and 23 are closed by the flat bottom portion of the other first block unit masonry on the upper surface, so that the wire grid 410 is not separated. In FIG. 9, when installing a long retaining wall or when a geogrid or a wire grid cannot be installed, only the first block unit 100 or the first block unit and the second block unit 200 are combined to form a box. A construction example in which the earth pressure bearing capacity of the retaining wall is increased is shown. In FIG. 10, by continuously assembling a plurality of third block units 300 to the side of the first block unit 100, the curved portion of the retaining wall can be easily constructed, and in the illustrated embodiment, nine third block units ( 300) can be used to construct retaining walls bent at 90°. The number of the third block units 300 may be changed according to the inclination angle of the first protrusion and the coupling groove formed adjacent thereto. The first and second block units 100 and 200 have the The block for finishing or the block for corner finishing disclosed in Korean Patent Registration No. 10-1501930 may be used in combination. 11 shows an example in which the retaining wall is constructed as an S-shaped curved surface by changing the coupling angle between the projections and the coupling grooves of the third block units 300 . In this way, since the block units of the present invention can freely construct the curved surface of the retaining wall, the construction work can be efficiently performed. 12 shows that the heights of the block units according to the present invention are different, for example, the first block unit 100 and the block units 500 having twice the height thereof are mixed and built to support each other in the horizontal direction. Therefore, slip does not occur, and the same effect as the conventional staggered masonry method can be exhibited. The side end of the retaining wall can be finished with the third block unit 300. The block units according to the present invention are vertically fitted by the engaging structure of the inclined protrusion and the engaging groove to combine the block units in the front-rear direction when the retaining wall is built. In addition to having a large bearing capacity against the earth pressure of The combination of block units in the vertical direction allows a certain amount of up-and-down flow without damage to the block unit. collapse can be prevented.

1, 11: first projection 2, 2', 12: second projection
3, 3', 13: coupling groove 5, 5', 17: inclined surface
6, 6', 18, 18': groove 20, 21: groove
22, 23: protrusion 100: first block unit
200: second block unit 201; 1st protrusion
202: second projection 203: coupling groove
300: third block unit

Claims (6)

In the retaining wall construction block having a coupling protrusion and a coupling groove on the side,
The first block unit for building a retaining wall has an engaging structure on one side, in which a first protrusion 1 and a second protrusion 2 are formed inclined with respect to the front surface, and are formed by the first and second protrusions 1 and 2 A coupling groove 3 is formed therebetween, and on the other side, the first and second projections and the coupling groove of the one side are vertically engaged with each other to construct a retaining wall, and the first projection 11 and Retaining wall construction block, characterized in that the second projection (12) and the coupling groove (13) formed therebetween is formed. According to claim 1, wherein the first block unit 100 is the first projection (1) on one side, the inclined surface (5), the shape of the groove (6) and the coupling groove (3) at a position rotated at a predetermined angle Repeatedly, the second protrusion 2, followed by the inclined surface 5' and the groove 6', the coupling groove 3' and the second projection 2' corresponding to the inclined surface 5 are formed on the back side. , a protrusion 12' corresponding to the second protrusion, a coupling groove 13', and a first protrusion 11' and a groove 18' are formed at the rear end of the inclined surface 17 on the other side as well. blocks for building retaining walls. The protrusion and groove of the first block unit according to claim 1, wherein a protrusion 20 is formed on the upper surface of the first block unit in the transverse direction, and a concave portion 22 is formed on the bottom surface corresponding thereto. A geogrid for reinforcing the retaining wall installed between the upper and lower first block units is constructed by being coupled to the adjacent block of the protrusion (20).
A block for building a retaining wall, characterized in that it is fixed by engagement of the recess (22) on the bottom of the unit. According to claim 3, wherein the upper surface of the first block unit is formed with longitudinal grooves 21 spaced apart from each other and horizontal grooves 23 therebetween to fix the wire grid for reinforcing the retaining wall. Block for retaining wall construction, characterized in that. According to claim 1, wherein the shape of the groove (6), the first projection (1), the coupling groove (3) and the second projection (2) of the inclined surface (5) formed on one side of the first block unit (100) The shape and arrangement of the inclined surface 205 and the groove 206, the first protrusion 201, the second protrusion 202, and the formed coupling groove 203 formed at the end of the inclined surface 206 in the same shape and arrangement as It is further formed by repeating this backward,
The second block unit 200 having the same structure as the shape of one side is formed on the other side in point symmetry to be coupled with the first block unit 100, and the engaging structure of both sides of the same as the first block unit 100 is formed on both sides. Retaining wall construction block, characterized in that it further comprises a third block unit (300) formed in the reduced transverse length and engaging with the first and second block units. The first and second protrusions 1 and 2 inclined on one side of the first block unit 100, the coupling grooves 3 and the grooves 6 are adjacent to the other side of the other first block unit 100'. The photo coupling grooves 13, the first projections 11, the second projections 12 and the grooves 18 are widely used in other first waterways and embankment constructions, etc. Examples of such a retaining wall block include domestic In Registered Patent No. 10-0752078 (registered on Aug. 20, 2007), a fixing pin is used to fix the fixing hole formed on both sides of the block and the fixing hole of another block, but the fixing pin has a head portion formed upward and downward. Disclosed is a retaining wall block in which a body portion is formed and the body portion and the head portion of the fixing pin are fitted into the fixing hole of the block and the fixing hole of another block to thereby construct the retaining wall block. This type of masonry block is also disclosed in EP 1648609. In addition, when the retaining wall is built with the prefabricated retaining wall block as described above, a geogrid normally used to increase the resistance to earth pressure is installed on the rear side of the retaining wall. As an example of the construction using the oval fastening hole by connecting a retaining wall block and a plurality of horizontal bars and vertical bars, it is installed between the retaining wall blocks that are stacked and installed between the retaining wall blocks and the soil. An assembly for a reinforcing earth retaining wall having a geogrid that generates friction, pull-out resistance, and shear stress of There is a problem in that the construction period of the retaining wall is prolonged due to the structure in which the geogrid is fixed by arranging it in the groove and masonry other blocks thereon.
In addition, in the conventional retaining wall block, the support rigidity could be reinforced by the reinforcing core installed through the blocks in the vertical direction. In the end, there was a problem of collapse.

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