KR20030049997A - Anchor for supporting retaining wall block - Google Patents

Abstract

PURPOSE: An anchor for supporting a retaining wall block is provided to connect tensile bars easily and simply by connectors, to execute the construction work of a retaining wall easily by assembling, to reduce the construction expenses for a retaining wall and to promote convenience on treatment. CONSTITUTION: The anchor(300) for supporting a retaining wall block(100) comprises: a pair of front tensile bars connected to the retaining wall block(100), arranged evenly on the right and left sides to support the retaining wall block(100) and provided with a primary ring; a pair of intermediate tensile bars arranged on the backside of each front tensile bar(310) and provided with a secondary ring and a third ring; and at least one connector(350) interposed in the rings to connect the front tensile bars(310) and the intermediate tensile bar(310) mutually in the trapezoid shape.

Description

Retaining Wall Block Anchor {ANCHOR FOR SUPPORTING RETAINING WALL BLOCK}

The present invention relates to an anchor for a retaining wall block, and in particular, is made to support the retaining wall block using a tension bar such as reinforcing bars, steel bars, or FRP rods, and does not require a separate resistor, and is simply required to have various lengths. The present invention relates to a retaining wall block support anchor capable of assembling as well as being easy to handle to construct a retaining wall, and to improve a supporting performance of the retaining wall constructed by the retaining wall blocks.

Retaining wall is a structure to prevent the collapse by supporting the soil of the back by being installed on various slopes or the slope of the cut-off site formed by civil works, and is constructed in consideration of the topographical factors and factors applied to the retaining wall after the retaining wall construction.

Retaining wall is the so-called reinforced concrete retaining wall which is formed by cutting the earth and sand of the construction area and forming formwork with reinforcing bars and panels, casting concrete to form the formwork, and then filling the reinforcement soil such as soil and crushed stone on the back. Retaining wall blocks can be largely divided into retaining walls that are prefabricated and built.

Reinforced concrete retaining wall is mainly supported by the structure itself so that it is not collapsed by earth pressure. Specifically, it is designed to prevent the retaining wall from conducting by horizontal earth pressure by designing the resistance moment at the bottom of the retaining wall larger than the conduction moment caused by horizontal earth pressure. do. That is, the bottom part of the reinforced concrete retaining wall is enlarged. Therefore, in the case of the reinforced concrete retaining wall, there is no big problem in the stability of the supporting structure.

However, in the case of the retaining wall constructed by the retaining wall blocks, since the binding force between the retaining wall blocks is weak, there is no choice but to collapse the earth pressure, so the construction supporting the retaining wall blocks must be performed together in the retaining wall construction process.

Generally known retaining wall block support structures include geogrid anchor structures and resistor anchor structures.

The geogrid anchor structure is fixed by the end of the mesh grid, which has a constant mesh by reinforcing fibers and / or steel wires, to be fastened to a coupling pin for assembling upper and lower retaining wall blocks, or to the rear of the retaining wall block. The retaining wall is supported by the frictional resistance of the mesh grid with respect to the reinforcement soil by hanging the groove formed in the upper end of the wall and burying the rear end of the mesh grid in the reinforcement soil filled in the rear wall of the retaining wall. As a representative example of such a geogrid anchor structure, those disclosed in Korean Patent Laid-Open Publication No. 1998-2478 may be mentioned. Also, Korean Patent Laid-Open Publication No. 1998-82110 hangs an adapter grill on a groove formed at an upper end of a rear wall of the retaining wall block, and the adapter grill An example of supporting the retaining wall block is disclosed by coupling a mesh grid to a rear end of the.

Resistor anchor structure is bent in the shape of the leading end of the tension bar, such as rebar, steel bar or FRP bar, etc., and fixed by hanging the bent groove in the insertion groove formed perpendicular to the front wall or the rear wall of the retaining wall block. Or the tip of the tension bar through the rear wall of the retaining wall block, and the tip of the tension bar is joined with an anchor head which can be hooked to the rear wall, and then the rear end of the tension bar is fixed to the concrete resistor. It is a method of supporting the retaining wall by passive resistance of the concrete resistor to reinforcement soil by embedding or fixing in the same way as fixing the tip of the tension bar. In this resistor anchor structure, when the protruding beads are formed on the outer circumferential surface by the tension bar, the frictional resistance of the protruding beads to the reinforcement soil is also partially responsible for the retaining wall.

However, there are the following problems in the anchor structure as described above.

In the case of geogrid anchor structure, since the area of the mesh grid is large, and the volume and weight are large, it is difficult to handle, resulting in an increase in logistics costs and a lot of retaining wall construction time. In addition, if the reinforcement soil is not flattened on the back wall of the retaining wall while constructing the retaining wall, the mesh grid will cry and it will be difficult to connect the front end of the mesh grid to the retaining wall block, which is difficult due to the large weight of the mesh grid. More weighted. In addition, the bearing capacity for retaining wall blocks should be different depending on the ground, reinforcement soil, or landfill depth. However, in case of mesh grid, the mesh is almost constant so that it cannot cope with the active change of bearing capacity and partially extend the length of the mesh grid. It's hard to do In addition, as the mesh grid becomes expensive, this geogrid anchor structure is undesirable in terms of cost.

On the other hand, in the case of the resistor anchor structure, there is an advantage that it can be easily installed at a low cost and simple compared to the geogrid anchor structure, but a resistor block is required separately, and if the length of the tension bar is extended, a special structure is made of a special structure separately It is not desirable in terms of having to connect tension bars to each other by a coupler.

The present invention has been made in consideration of the above-described conventional problems, and is made to support the retaining wall block using a tension bar such as reinforcing bars, steel bars, or FRP rods, while taking advantage of the geogrid anchor structure and the resistor anchor structure, such as a resistor block. An object of the present invention is to provide a retaining wall block anchor that does not require a separate resistor.

Another object of the present invention can be easily assembled to a variety of lengths as needed, and the handling is easy to build the retaining wall easily, retaining wall block support that can improve the support performance of the retaining wall built by the retaining wall blocks To provide an anchor.

1A is a perspective view illustrating a state in which a retaining wall block is supported by an anchor according to Embodiment 1 of the present invention.

1B is an enlarged cross-sectional view of the main part of FIG. 1.

1C is a perspective view illustrating a state in which a retaining wall block of another example is supported by an anchor according to Embodiment 1 of the present invention.

1D is a perspective view illustrating a state in which a retaining wall block of another example is supported by an anchor according to Embodiment 1 of the present invention.

1E is a perspective view showing a state in which a retaining wall block of another example is supported by an anchor according to Embodiment 1 of the present invention.

FIG. 1F is a perspective view illustrating a state in which the retaining wall of FIG. 1E is supported by another method. FIG.

2A is a plan view illustrating a state in which retaining wall blocks constructed by an anchor according to Embodiment 1 of the present invention are supported.

2B is a cross-sectional view illustrating a state in which the retaining wall blocks constructed by the anchor according to the first embodiment of the present invention are supported.

Figure 3a is a side view showing an example of the connection structure of the front tension rod and the relay tension rod constituting the anchor according to the first embodiment of the present invention.

3B is a side view illustrating another example of a connection structure between the front tension rod and the relay tension rod constituting the anchor according to the first embodiment of the present invention.

Figure 4a is a schematic front view showing an example of the connecting member constituting the anchor according to the first embodiment of the present invention.

4B is a plan view illustrating a state in which tension bars are connected by using the connection member of FIG. 4A.

4C is a cross-sectional view of the same.

4D is a cross-sectional view illustrating a state in which tension bars are connected by using a connecting member as opposed to FIG. 4C.

5 is a plan view showing a state in which the retaining wall block is supported by the anchor according to the second embodiment of the present invention.

6A is a partial side view showing an anchor according to Embodiment 2 of the present invention.

6B is a partial side view showing another example of the anchor according to Embodiment 2 of the present invention.

7 is a plan view showing a state in which the retaining wall block is supported by the anchor according to the third embodiment of the present invention.

8A is a partial side view showing an anchor according to Embodiment 3 of the present invention.

8B is a cross-sectional view showing an anchor according to Embodiment 3 of the present invention.

9A is a partial side view showing an anchor according to Embodiment 4 of the present invention.

9B is a partial side view showing another example of the anchor according to Embodiment 4 of the present invention.

10 is a side view showing an example of an anchor according to Embodiment 5 of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: retaining wall block, 310, 410, 510: front tension bar,

316, 416, 516: the first ring portion, 332, 632: the second ring portion,

334, 634: 3rd ring, 330, 630, 730: relay jangbong,

350, 650, 750, 760: connection member, 352, 552, 572: horizontal portion,

354, 554, 574: vertical bend, 450, 550, 660, 770: upper reinforcement,

470, 570, 670, 780: lower reinforcement

In order to achieve the above object, the retaining wall block support anchor according to the present invention is connected to the retaining wall block to support the retaining wall block, each end of which is arranged side by side on the left and right and each rear end is formed with each of the first ring portion formed by bending A pair of anterior tension rods; A second ring portion formed by bending a tip corresponding to the first ring portion and a third ring portion formed by bending a rear end corresponding to the second ring portion, each of which is disposed at a rear side of each of the front tension rods; A pair of relay jangjangbong; At least one connecting the front tension rods and the relay tension rods to each other in a ladder form is inserted into the loop portions where the ends of the front tension rods and the relay tension rods corresponding to each other overlap each other. Characterized in that comprises a connecting member.

The connecting member may be formed in a straight shape as well as in a straight shape.

When the connecting member is formed in a straight shape, the ring portions corresponding to each other overlap each other so that the tension rods are connected by inserting each end of the straight connecting member to the left and right to the overlapping ring portions.

When the connecting member is formed in a depression shape, the ring portions corresponding to each other overlap each other so that the tension rods are connected by inserting each vertical bending portion of the depression connection member into the overlapping ring portions.

In addition, the retaining wall block support anchor according to the present invention comprises: a pair of front tension rods connected to each end of the retaining wall block and arranged side by side to support the retaining wall block; At least one straight upper reinforcement, each end of which is welded to an upper portion of the pair of front tension rods to connect the pair of front tension rods; And at least one straight lower reinforcing member welded to each end of the pair of front tension rods. In the anchor of this example, at least one relay tension rod is further connected to each of the front tension rods by a connecting member, and the relay tension rods disposed side by side on the left and right sides are welded at each end of their upper and lower portions. It is preferable that they are connected to each other by at least one upper / lower reinforcement.

In addition, the retaining wall block support anchor according to the present invention comprises: a pair of front tension rods connected to each end of the retaining wall block and arranged side by side to support the retaining wall block; It comprises at least one dish-shaped upper reinforcing material is welded at each end to the upper portion of the pair of front tension rods to connect the pair of front tension rods. In the case of the anchor, it may further have at least one straight lower stiffener, each end is welded to the lower portion of the pair of front tension rods. In addition, in the case of this anchor, it may further have at least one relay tension rod connected to the rear of each of the front tension rods by the connecting member, respectively, the relay tension rods arranged side by side on the left and right sides thereof Each end is preferably connected to each other by at least one dip-shaped upper stiffener to be welded.

The features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments based on the accompanying drawings. Prior to this, the terminology or words used in the specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of terms in order to best explain his invention. It must be interpreted to mean meanings and concepts.

<Example 1>

A retaining wall block supporting anchor according to Embodiment 1 of the present invention will be described with reference to FIGS. 1A to 4D.

1A shows an example of a retaining wall block supported by an anchor according to the present embodiment. The retaining wall block 100 supported by the anchor 300 of the present embodiment preferably has a hollow 110 penetrating up and down. At least two anchor holes 132 are formed in the rear wall surface 130 of the retaining wall block 100. The anchor groove 134 is formed on the rear wall surface 130 of the retaining wall block 100. Is formed. In FIG. 1A, a retaining wall block 100 having two anchor holes 134 corresponding to two anchor holes 132 is illustrated, and FIG. 1C has a size of an area including two anchor holes 132. An retaining wall block 100 in which one anchor groove 134a is formed is illustrated. In addition, FIG. 1D illustrates an retaining wall block 100 having an anchor end 134b formed on the entire upper end of the rear wall surface 130 to the same depth as the anchor groove 134a.

1E and 1F, the retaining wall has a plurality of anchor slits 134b (here three) formed on the rear wall 130 from the top to the bottom instead of the anchor hole 132 and the anchor groove 134. Block 100 is illustrated.

The imaginary retaining wall blocks 100 have at least one key 140 protruding from the upper surface of the imaginary retaining wall block 100, and two recesses formed on the bottom surface thereof so that the keys 140 can be inserted. May have key grooves 142. In addition, as shown in FIGS. 2A and 2B, the front wall surface 120 of the retaining wall blocks 100 has a plurality of vegetation from the top to the bottom so that the porous vegetation blocks 200 for greening the retaining wall can be coupled to the front. Slit 122 is formed. The vegetation slit 122 is provided so that the plant growing here can take root into the hollow 110. For example, the nut 210 having a diameter larger than the width of the vegetation slit 122 is coupled to the rear end of the bolt 210 installed through the center of the vegetation block 200 to connect the bolt 210 to the vegetation slit 122. When inserted into the nut 220 is caught on the front wall surface 120, the vegetation block 200 can be simply coupled to the front of the retaining wall block 100.

The anchor 300 of the present embodiment for supporting the various retaining wall blocks 100 as described above is connected to the retaining wall block 100 so as to support the retaining wall block 100, as shown in FIG. A pair of front tension rods 310 and 310 disposed, at least one pair of relay tension rods 330 and 330 disposed behind each of the front tension rods 310, and the front tension rods 310 And at least one connection member 350 connecting the relay tension rods 330 to each other.

The front end of the front tension rod 310 is connected to the retaining wall block 100 is formed to support the retaining wall block 100. For example, as shown in FIG. 1B, a vertical curved portion 312 bent downward from the horizontal portion 311 and a rear curved portion 313 bent backward from the vertical curved portion 312 have a substantially dichroic annular shape. Is formed.

Therefore, when the front end of the front tension rod 310 is connected to the retaining wall block 100 having the anchor hole 132 and the anchor groove 134, the horizontal portion 311 is anchored of the retaining wall block 100. While being inserted into the groove 134, the vertical bent portion 312 and the rear bent portion 313 are forward while being inserted into the hollow 110 of the retaining wall block 100 so as to correspond to the anchor holes 132 of the retaining wall block 100. When the long rod is pulled backward, the rear bent portion 313 is inserted into the anchor hole 132 from the hollow 110 of the retaining wall block 100, so that the retaining wall block 100 is the front tension rod 310 as shown in FIGS. 1A to 1C. It can be supported by).

In addition, when the tip of the front tension rod 310 is connected to the retaining wall block 100 in which the anchor slit 134b is formed, the tip of the front tension rod 310 is positioned in the hollow 110 of the retaining wall block 100 to the anchor slit 134b. When the front tension rod 310 is pulled back while the front tension rod 310 is inserted, the tip of the front tension rod 310 wraps around the lower end of the rear wall surface 130 of the retaining wall block 100, and thus FIGS. 1E, 2A and FIG. As shown in 2b, the retaining wall block 100 may be supported by the front tension rod 310.

Even when the retaining wall block 100 is constructed in an inverted state as opposed to the above, the front tension rod 310 may be connected in the same manner as described above, and thus a detailed description thereof will be omitted. In addition, in the case of supporting the retaining wall block 100 in which the anchor slits 134b are formed, the tip of the front tension rod 310 passes through the hollow 110 from the lower end of the rear wall 130 as shown in FIG. 1F. 134b may be used.

In addition, the structure of the front end of the front tension rod 310 made to be connected to the retaining wall block 100 described above is merely an example, and is connected to the retaining wall block 100 so as to support the wall block 100. Any one can be employed in the present invention. For example, when the tip of the front tension rod 310 has a straight shape, the tip of the front tension rod 310 is inserted through the anchor hole 132 formed in the rear wall surface 130 of the retaining wall block 100 to retain the retaining wall block. The protruding into the hollow 110 of the (100), the front end of the front tension rod 310 protruding into the hollow 110 of the retaining wall block 100 can be caught on the rear wall surface 130 of the retaining wall block 100 As the illustrated anchor head is coupled, a structure in which the retaining wall block 100 is supported may be adopted.

According to this embodiment, the rear end of the front tension rod 310 is bent roundly for connection with the relay tension rod 330 to be described later is formed as a first ring portion 316 (see Fig. 2b). As shown in FIG. 2B, the first ring portion 316 may be bent downward in the same manner as the bending direction of the rear bend portion 313 formed at the tip of the front tension rod 310, and the rear bend portion 316 may also be formed. Unlike the bending direction of may be bent round to the left or right.

In addition, as shown in Figure 3a, the tip of the relay tension rod 330 is bent in correspondence with the first ring portion 316 for the connection with the front tension rod 310 is a second ring portion ( 332). In addition, the rear end of the relay tension rod 330 is preferably bent to correspond to the second ring portion 332 in consideration of the connection of the plurality of relay tension rod 330 is formed as a third ring portion 334. The bending direction of the second ring portion 332 and the third ring portion 334 may be made upside down or left and right in opposite directions as shown in FIG. 3B.

According to the present embodiment, the connecting member 350 for connecting the front tension rods 310 and the relay tension rods 330 formed as described above may have a straight shape 350a as shown in FIG. 2A or FIG. 4. It is formed in a depressed shape 350b as shown.

The front tension rod 310, the relay tension rod 330 and the connecting member 350 may be formed of, for example, rebar, steel rods or FRP rods, any one of the longitudinal projection bead on the outer peripheral surface thereof as shown in Figure 1b It is preferred that the 320 and circumferential protruding beads 322 are formed.

The straight connection member 350a is useful for connecting the relay tension rods 330 to the front tension rods 310 having the first ring portion 316 bent downward as shown in FIGS. 3A and 3B. . That is, when the front tension rods 310 and the relay tension rods 330 are disposed on the left or right side of the first ring portion 316 so that the second ring portion 332 overlaps with each other, the first ring portion 316 may be disposed. The hole of the hole and the second ring portion 332 is to pass left and right. Therefore, when each end of the connecting member 350 is inserted into the ring portions 316 and 332 overlapped with each other left and right, as shown in Figure 2a, a pair of front tension rods (310, 310) and a pair of relay Jangbong (330, 330) may be connected to each other in the form of a ladder in front, rear, left and right.

As such, when the front tension rods 310 and the relay tension rods 330 are connected with the straight connection member 350a, the ring parts 316 and 332 are disposed to protrude downward, so that the straight connection member 350a is provided. Is disposed in a direction orthogonal to these in the state protruded to the lower of the front tension rods 310 and the relay tension rods 330. Accordingly, the frictional force of the front tension rods 310 and 310, the relay tension rods 330, and the protruding beads 320 and 322 of the straight connection member 350a against the reinforcement soils filled in the rear surface of the retaining wall, The retaining wall block 100 may be supported by the passive resistance of the ring portions 316 and 332 and the linear connection member 350a. In addition, since the wires / rear ends of the tension rods 310 and 330 are disposed to overlap the left and right sides, the retaining wall block 100 may be supported by the resistance by the front end surfaces of the relay tension rods 330.

In the present embodiment, when the plurality of relay tension rods 330 are connected to each of the front tension rods 310 by the straight connection members 350a, the second ring portion of the foremost relay tension rod 330 ( 332 is connected to the first ring portion 316 of the front tension rod 310 to the left and right overlapping each other, the second ring portion 332 and the first corresponding to each other of the relay tension rods 330 adjacent to each other before and after The three ring portions 334 are connected to each other in a state in which the left and right overlap, the front tension rods 310 and the plurality of relay tension rods 330 may be connected.

As described above, when connecting the plurality of relay tension rods 330 with the straight connection member 350a, the second ring portion 332 and the third ring portion 334 are opposite to each other as shown in FIG. 3B. When employing the lower tension rods 330 formed below, the first ring portion 316 of the front tension rod 310 and the second ring portion 332 of the foremost relay tension rod 330 overlap each other from side to side. When arranged to protrude downward in a state, the third ring portion 334 of the foremost relay tension rod 330 is disposed in a protruding state. When the second ring portion 332 of the rear relay tendon rod 330 overlaps with the left or right side of the third ring portion 334 of the front relay tendon rod 330, the rear relay tendon rod is not shown here. The third ring portion 334 of 330 is disposed to protrude downward. In such a way that each of the ends of the linear connection member 350a is inserted into the overlapping ring portions 316, 332, 332, 334 in a state in which the relay tension rods 330 are arranged so that the ring portions protrude alternately up and down. When connecting a plurality of relay tension rods 330, the linear connection member 350a is alternately arranged in a protruding state above and below the tension rods 310, 330, so that the resistance to the reinforcement soil is doubled while forming a ladder shape. There is an advantage to this.

On the other hand, in the case of the dichroic connecting member 350b as shown in Figure 4, the first ring portion 316 is connected to the tensioning rods 330, the front tension rods 310 are bent to the left or right It is useful to That is, as shown in FIGS. 4B and 4C, in the state where the front tension rod 310 is disposed so that the hole of the first ring portion 316 faces up and down, the upper or lower portion of the first ring portion 316 is disposed on the upper ring portion 316. After arranging the foremost relaying rods 330 so that the second ring portions 332 overlap, the vertical bending portions 354 of the recessed connection members 350b are overlapped with the ring portions 316 and 332 overlapped with each other. When inserted, the tension rods 310 and 330 are connected in a ladder shape. In this case, the horizontal portion 352 of the recessed connection member 350b is disposed in a direction orthogonal to these at the top of the front tension rods 310 and the relay tension rods 330, Both vertical bends 354 and 354 are buried in a vertical anchor structure in the reinforcement soil filled in the rear surface of the retaining wall. Accordingly, the frictional force of the protruding beads 320 and 322 of the front tension rod 310, the relay tension rod 330 and the recessed connection member 350b to the reinforcement soils filled on the rear surface of the retaining wall, and the ring portions 316, 332 and 334 and the passive resistance by the horizontal portion 352 of the dichroic coupling member 350b, and both vertical bends 354 and 354 of the dichroic coupling member 350b embedded in a vertical anchor structure in the reinforcement soil. The retaining wall block 100 is supported by the resistance force. Therefore, when the recessed connection member 350b is adopted, the retaining wall block 100 has a higher performance than the case of employing the above-described straight connection member 350a. In addition, in this case, a plurality of relay tension rods 330 may be further connected to each of the front tension rods 310, and the connection between the relay tension rods 330 further connected in this manner is similar to the above. Since it may be connected by the member 350b, its detailed description is omitted here. In addition, although only the structure in which the vertical curved portions 354 of the recessed connection member 350b are inserted into the reinforcement soil from the top to the bottom is inserted, the vertical connection of the recessed connection member 350b is illustrated in FIG. 4D. Flexures 354 are inserted from the bottom to the loops may also be applied to the structure embedded in the reinforcement soil. In addition, although not shown here, when two or more relay tension rods 330 are connected to the rear of the front tension rod 310, a coupling structure as shown in FIG. 4C and a coupling structure as shown in FIG. 4D are alternately applied. Should be included. In particular, in this case, since both vertical curved portions 354 and 354 of the recessed connection members 350b are alternately buried in the reinforcement soil, there is an advantage that the bearing force for the retaining wall block 100 may be further increased.

<Example 2>

The retaining wall block supporting anchor according to the second embodiment of the present invention will be described with reference to FIGS. 5 to 6B.

The retaining wall block support anchor 400 of the present embodiment is connected to the front end of each retaining wall block 100 so as to support the retaining wall block 100, as shown in FIG. At least one upper stiffener 450, each end of which is welded at an upper end of the pair of front tension rods 410 and 410 to connect the long rods 410 and 410 and the pair of front tension rods 410 and 410 to each other. ) And at least one lower reinforcing material 470 welded at each end to the lower portion of the pair of front tension rods 410 and 410.

In the present embodiment, the upper / lower reinforcement (450, 470) is made of a straight. The straight upper and lower reinforcement materials 450 and 470 can be welded correspondingly up and down with the front tension rods 410 interposed therebetween as shown in FIG. 6A, and the front tension rods as shown in FIG. 6B. The upper and lower portions of the 410 may be welded at predetermined intervals.

That is, according to the anchor 400 according to the present embodiment, a pair of front tension rods 410 and 410 are connected by a ladder shape by the upper reinforcement members 450 and the lower reinforcement members according to the first embodiment. Supporting the retaining wall block 100 in the same structure as the anchor using a straight connection member in the.

<Example 3>

A retaining wall block supporting anchor according to Embodiment 3 of the present invention will be described with reference to FIGS. 7 to 8B.

The retaining wall block support anchor 500 of the present embodiment is connected to the front end of each retaining wall block 100 so as to support the retaining wall block 100 and a pair of front tension bars 510 and 510 disposed side by side. Down from the horizontal portion 552 and the horizontal portion 552 each end is welded to the upper portion of the pair of front tension rods (510, 510) to connect the pair of front tension rods (510, 510) At least one dish-shaped upper reinforcement 550 having both vertical curved portions 554 and 554 to be bent.

Therefore, since the vertical bends 554 of the recessed upper reinforcement 550 are embedded in the reinforcement soil in an anchor structure, the retaining wall block 100 is supported in the same structure as the anchor employing the recessed connector in the first embodiment. .

In addition, the anchor of the present embodiment, the horizontal portion (572) and the horizontal portion, each end is welded to the lower portion of the pair of front tension rods (510, 510) to connect the pair of front tension rods (510, 510) It may further have at least one dip-shaped lower reinforcement 570 having both vertical bends 574, 574 that bend upward from 572. That is, the dish-shaped lower reinforcing material 570 has a structure in which the dish-shaped upper reinforcing material 550 is inverted.

When the recessed lower reinforcement 570 is employed as described above, the recessed upper and lower reinforcement members 550 and 570 are alternately arranged up and down at predetermined intervals along the front and rear of the front tension rods 510 to upper and lower reinforcement members. Since both vertical bends 554 and 574 of the 550 and 570 are buried in the reinforcement soil up and down, the bearing capacity for the retaining wall block 100 may be further improved.

<Example 4>

A retaining wall block supporting anchor according to a fourth embodiment of the present invention will be described with reference to FIGS. 9A and 9B.

In the retaining wall block supporting anchor 600 of the present embodiment, at least one relay tension rod 630 is connected to each of the front tension rods 410 and 510 in the second or third embodiment. By further connecting, the transverse tension rods 630 corresponding to each other from side to side are made of at least one upper reinforcing material 660 welded to each end thereof. In addition, the anchor 600 of the present embodiment may further have at least one lower reinforcing material 670 welded to each end of the lower portion of the anchor 600 to connect the relay tension rods 630 corresponding to each other.

In this embodiment, looking at the structure connecting the front tension rods (410, 510) and the relay tension rods 630, as shown in Figure 9a the first end of the front tension rods (410, 510) Like the front tension rods of the first ring portion (416, 516) is formed, the second ring portion 632 and the tip and rear end of the relay tension rod 630 of the present embodiment, similar to the relay tension rod of Example 1 The third ring portion 634 is formed.

In this case, as in the second or third embodiment, the upper / lower reinforcing materials 660 and 670 connecting the relay tensile rods 630 to each other are formed of a straight or decane shape, and the front tensile rods 410 corresponding to each other from side to side. The 510 and the relay tension rods 630 may be connected by welding.

Example 5

An retaining wall block supporting anchor according to a fifth embodiment of the present invention will be described with reference to FIG. 10.

In the retaining wall block supporting anchor 700 of the present embodiment, in each of the second and third embodiments, at least one relay tension rod 730 is connected to each of the front tension rods 410 and 510, respectively. Ends 750 and 760 are welded and further connected, and the relay tension rods 730 corresponding to each other from side to side are made of at least one upper reinforcing material 770 welded to each end thereof.

In addition, the anchor 700 of the present embodiment may further have at least one lower reinforcing material 780, each end of which is welded to the lower portion thereof to connect the relay tension rods 730 corresponding to each other from side to side.

In the retaining wall block supporting anchor according to the present invention configured as described above, it is easy and simple to connect the tension rods by the connecting members, and is made of prefabricated, so that the retaining wall construction work can be easily performed, It can be reduced, and can be handled in a disassembled state, thereby facilitating handling and reducing logistics costs.

In addition, since the connecting member itself acts as a resistance to the reinforcement soil to support the retaining wall block, it is possible to support the retaining wall block by taking only the advantages of the geogrid anchor structure and the resistor anchor structure, so that the retaining wall construction work can be easily performed and the retaining wall Block support performance can be improved.

In addition, when employing a recessed connection member, both vertical portions of the connection member may be embedded in the reinforcement soil in an anchor structure, thereby further increasing the retaining wall block supporting performance.

In addition, if the lengths of the front and rear relay bars are different from each other, it is possible to cope with the active change of the bearing capacity. According to this can be arbitrarily arbitrarily adjusted the gap and the vertical arrangement of the connecting member is more effective to cope with the active change in the bearing capacity. That is, the retaining wall block supporting performance can be further increased by changing the spacing of the connecting members.

Claims (10)

A pair of front tension rods each of which is connected to the retaining wall block so as to support the retaining wall block and is disposed side by side on the left and right sides, and has a first ring portion formed by bending the rear end thereof; Each of the front tension rods has a second ring portion formed by bending the front end corresponding to the first ring portion of each front tension rod and a third ring portion formed by bending the rear end corresponding to the second ring portion. At least one pair of relay tension rods each disposed rearward; And, At least one connection member connecting the front tension rods and the relay tension rods to each other in a ladder form by inserting the loop portions overlapping each other in a state where the ring portions corresponding to each other of the front tension rods and the relay tension rods overlap each other. Retaining wall block support anchor, characterized in that comprises a. The method of claim 1, The connecting member has a straight shape, and the corresponding ring portions overlap each other so as to pass through from side to side, and each end of the straight connecting member is inserted into the overlapping ring portions. The method of claim 2, The first ring portion is formed by bending the rear end of the front tensile rod rounded downward, the second ring portion and the third ring portion of the relay tension rod is bent upward and downward in opposite directions, the front tension rod and the relay Retaining wall block support anchors, wherein the ring portions corresponding to each other of the long rods are alternately arranged up and down while going backwards from the front tensile rods in an overlapped state, and each end of the straight connection member is inserted into the overlapping ring portions. The method of claim 1, The connecting member is formed in a depression shape, and the corresponding ring portions overlap each other so as to pass up and down, and each vertical bending portion of the depression connection member is inserted into the overlapping ring portions and is perpendicular to the reinforcement soil filled on the rear surface of the retaining wall. Retaining wall block support anchor, characterized in that the buried in the anchor structure. A pair of front tension rods connected to each end of the retaining wall block so as to support the retaining wall block and arranged side by side on the left and right sides; At least one straight upper reinforcement, each end of which is welded to an upper portion of the pair of front tension rods to connect the pair of front tension rods; And, Retaining wall block support anchor, characterized in that it comprises at least one straight lower reinforcement to each end welded to the lower portion of the pair of front tension rods. The method of claim 5, The front tension rod has a first ring portion formed by bending the rear end thereof, and at least one relay tension rod having a second ring portion and a third ring portion formed in the front and rear ends thereof in order to correspond to the first ring portion, respectively. The relay rods are further arranged to overlap the corresponding ring portions at the rear of the tension rods, and are connected by a connecting member, and the relay tension rods are formed by at least one upper / lower reinforcement, each end of which is welded to the upper and lower portions thereof. Retaining wall block support anchors, characterized in that connected to each other. The method of claim 5, After each of the front tension rods, at least one relay tension rod is connected to each other by welding the ends of the upper / lower connection members, and the relay tension rods corresponding to each other from side to side are welded at least at each end of their upper / lower portions. Retaining wall block support anchor, characterized in that connected by one upper / lower reinforcement. A pair of front tension rods connected to each end of the retaining wall block so as to support the retaining wall block and arranged side by side on the left and right sides; At least one dish-shaped upper stiffener having a horizontal portion welded at each end to the upper portion of the pair of front tension rods and both vertical bends vertically bent from the horizontal portion to connect the pair of front tension rods; Retaining wall block support anchor, characterized in that made. The method of claim 8, And at least one dish-shaped lower reinforcement having a horizontal portion welded at each end and a vertical curved portion vertically bent from the horizontal portion to the lower portion of the pair of front tension rods to connect the pair of front tension rods. Retaining wall block support anchors, characterized in that consisting of. The method according to claim 8 or 9, The front tension rod has a first ring portion formed by bending the rear end thereof, and at least one relay tension rod having a second ring portion and a third ring portion formed in the front and rear ends thereof in order to correspond to the first ring portion, respectively. The relay rods are further arranged to overlap the corresponding ring portions at the rear of the tension rods, and are connected by a connecting member, and the relay tension rods are formed by at least one upper / lower reinforcement, each end of which is welded to the upper and lower portions thereof. Retaining wall block support anchors, characterized in that connected to each other.