JPH0141784Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a concrete block retaining wall useful as a retaining wall such as an earth retaining wall or a bank retaining wall.

[Conventional technology] For retaining walls or bank retaining walls, cast-in-place concrete retaining walls, masonry retaining walls made of natural stones such as cobblestones, masonry stones, and rough stones, or small concrete masonry blocks are used. Block retaining walls and other structures have been constructed.

[Problems that the invention aims to solve] When constructing the above-mentioned retaining walls, etc., all on-site tatami work is done by hand, but recently, the number of on-site workers is rapidly aging. However, there is a problem in that work efficiency tends to decrease.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a concrete block retaining wall that is easy to construct and the completed retaining wall is highly effective as a retaining wall. It was designed for the purpose of Recesses are made in one place on each side and two in the vicinity of the center, and rectangular plate-shaped restraining members with the rear ends formed as enlarged parts are protruded from the back of the mirror part at one-quarter points from both sides in the transverse direction. At the same time, a plurality of flat □-shaped locking grooves are provided from the back surface of the enlarged portion of the backing material, parallel to the upper edge of the mirror section, and at the same position on the left and right, and hooks for locking nets, etc., to the back surface of the backing material. While providing an appropriate number of
Concrete blocks each having a protrusion on top of the backing material and a recess on the bottom surface that fits into the protrusion are laid on the foundation, and horizontal reinforcing bars are secured from the back side of the backing material of each block. While being locked in the groove, the lower end of the vertical reinforcing bar is buried in the foundation, and the vertical reinforcing bar is placed on the back side of the horizontal reinforcing bar, and then the hanging reinforcing bar is locked in the key-shaped locking part, and the vertical reinforcing bar is secured by the hanging reinforcing bar. A net made of iron wire or the like is fixed to the hook on the back of the backing material, and the back side is filled with backing stone, and backing concrete is placed on the back side of the mirror surface and in the cavity surrounded by the backing material and the net. It is characterized by being filled.

[Function] That is, the present invention forms a concrete block into a large geta-like shape, and while stacking the concrete blocks, horizontal reinforcing bars, vertical reinforcing bars, and hanging reinforcing bars are placed as appropriate, and reinforcement with reinforcing bars is performed. By applying backfill concrete, it is an excellent retaining wall that is easy to construct and has high strength.

[Example] Next, an example of a concrete block used for carrying out the present invention will be explained with reference to the drawings.

A is an example of the concrete block of this invention.
The mirror part 1 has a rectangular plate shape, and has a small circular hole 3a on the back side of its upper edge 2, which is connected to the circular hole 3a, into which the tip of the hanging reinforcing bar C, which is bifurcated and has a bent tip, is fitted and locked. Groove 3b with a semicircular cross section and the same depth as the thickness of the hanging reinforcing bar C arm
A key-shaped locking part 3 consisting of a mirror part 1 is recessed in one place near each end and two in the center part.
A rectangular plate-shaped restraining member 4, 4 whose rear end is formed into an enlarged back portion 4a is provided protruding from a quarter position from both transverse ends of the back portion 4a, and a plurality of flat □-shaped braces are provided from the back surface of the back portion 4a. A locking groove 5 having a stepped groove 5a passing through the backing member 4 laterally is bored parallel to the upper edge 2 and at the same position on the left and right backing members 4, 4.
A plurality of locking hooks 6 are planted in two rows on the back side of a, while a protrusion 7 is provided near the joint with the mirror part 1 at the upper end of the left and right retaining members 4, 4. Material 4,4
The lower end is provided with a recess 8 that fits into the protrusion 7, and the whole has a clog-like shape, and its size is, for example, 800 mm in length,
It has a rectangular shape with a width of 1250 mm and a thickness of 120 mm, and the depth of the backing material 4 is 230 mm.

Note that B is the block A cut in half lengthwise, and in this block B, the retaining member 4 is located at the center of the back of the mirror portion 1, and the key-shaped locking portions 3 are located at the same distance from both ends of the upper edge 2. It is located in a remote location.

Therefore, the distance between the two key-shaped locking parts 3, 3 provided at the center of the upper edge 2 of block A should be twice the distance from the ends of the locking parts 3, 3 provided at both ends. shall be.

Next, an example of constructing a retaining wall of the present invention using the above blocks will be explained.

During on-site construction, the first stage is placed in order as A11, A12, A13, etc., with the mirror part 1 of block A facing up, on top of the foundation 21 previously formed with concrete, in accordance with the required legal slope. Then, the horizontal reinforcing bars 22 are fitted into the locking grooves 5 from the back side of the backing material 4 and locked in the step grooves 5a, the lower ends of the vertical reinforcing bars 23 are buried in the foundation 21, and the vertical reinforcing bars 23 are inserted into the back side of the horizontal reinforcing bars 22. After that, a hanging reinforcing bar C is locked to the key-shaped locking part 3 of the upper edge 2 of the block A1i, and the vertical reinforcing bar 23 is supported by the hanging reinforcing bar C.

Next, block A is made of iron wire or synthetic resin.
After locking the net 24 with the same width as the short side length of the continuous backing material 4 to the hook 6 on the back side of the backing material 4, the back side of the netting 24 is filled with backing stone 25, and then the back side of the mirror part 1 and the backing material 4,
4 and the hollow portion 26 surrounded by the net 24 is filled with ready-mixed concrete 27 to complete the first stage construction.

Thus, in the second stage, the block A21 is arranged so as to equally straddle the blocks A11 and A12, so that the concave portions 8, 8 at the lower ends of the retaining members 4, 4 of the block A21 are placed in the corresponding blocks. A11 and A
It is fitted and placed on the protrusions of No. 12 retaining members 4, 4. After the blocks A22, A23... are sequentially placed on the first stage block A in this way, the horizontal reinforcing bars 22 are inserted through the locking grooves 5, bypassing the vertical reinforcing bars 23, and are locked in the step grooves 5a. Similarly to the above, the suspension reinforcing bars C are engaged with the key-shaped locking portions 3 of the upper edge 2 of the block A2i to support the vertical reinforcing bars 23. After that, the net 24 is locked to the hook 6 in the same manner as in the first stage, the back-filling chestnut stone 25 is filled, and the cavity 26 is filled with ready-mixed concrete 27.

Thereafter, by building the third and fourth stages in the same manner, a large-sized concrete block retaining wall reinforced with steel bars is formed.

In addition, since the block B has the above-mentioned laminated block retaining wall, the block B is
Since a recess corresponding to that amount is formed, this is for processing the recess.

[Effects] The concrete block retaining wall of the present invention is as described above, and the concrete block for constructing the retaining wall has hanging reinforcing bars with bifurcated ends bent at the upper edge of the rectangular mirror section. There are two key-shaped locking parts, one near each end and two near the center.
Recessed in place, 1/4 from both sides of the mirror part in the lateral direction
A rectangular plate-shaped restraining member whose rear end is formed as an enlarged part is provided protrudingly on the back surface of each point, and a plurality of flat □-shaped locking grooves are formed from the back surface of the enlarged part of the restraining material on the upper edge of the mirror part. A suitable number of hooks are provided on the back surface of the restraining material to lock nets, etc., and a protrusion is provided on the upper surface of the restraining material, and a recessed portion is provided on the lower surface of the restraining material to fit into the protrusion. Since the horizontal reinforcing bars can be installed horizontally by being locked in the locking grooves, and the vertical reinforcing bars can be supported by the hanging reinforcing bars, it is possible to provide reinforcement according to the design conditions. It is possible to lay the floor without any vertical deviation, and since the net can be secured to the back side, it is possible to fill the area with back-filling chestnut stone, and the adhesion between the back-filling concrete and the chestnut stone is good, resulting in retaining walls. Increases the frictional resistance on the back,
It is a stable and strong large concrete block retaining wall that is easy and economical to construct and is extremely useful as an earth retaining wall or a bank retaining wall.

[Brief explanation of the drawing]

Figure 1 is a perspective view from the front of an example of a concrete block constituting the retaining wall of the present invention, Figure 2 is a perspective view of the same from the rear, Figure 3 is a side view, and Figure 4 is a perspective view of the retaining wall of the present invention. A perspective view of the auxiliary blocks used during construction, Figure 5 is a perspective view of hanging reinforcing bars, Figure 6 is a perspective view of the retaining wall of the present invention being constructed, and Figure 7 is a side view of the retaining wall. It is. A...Block, 1... Mirror part, 2... Upper edge, 3... Key-shaped locking part, 4... Retaining member, 5... Locking groove, 6... Hook, 7
... protrusion, 8 ... recess, 21 ... foundation, 22 ... horizontal reinforcing bar,
23... Vertical reinforcing bar, 24... Net, 25... Back-filling chestnut stone, 26
...Cavity part, 27...Concrete backing.

Claims (1)

[Scope of utility model registration request] On the upper edge of the rectangular mirror part, key-shaped locking parts are recessed in two places near each end and two near the center to lock the hanging reinforcing bars that are bifurcated and bent at the tip. A rectangular plate-shaped restraining member whose rear end is formed as an enlarged portion is provided on the back surface of the mirror portion at a quarter point from both sides of the mirror portion in the lateral direction, and a plurality of rectangular restraining members are provided on the back surface of the enlarged portion of the restraining material. A flat □-shaped locking groove is provided parallel to the upper edge of the mirror part and at the same position on the left and right sides, and an appropriate number of hooks for locking a net etc. are provided on the back of the backing member, while a protruding groove is provided on the upper surface of the backing member. Blocks each having a concave portion on the lower surface that fits into the protrusion are stacked on the foundation, and horizontal reinforcing bars are locked in the locking grooves from the back side of the backing member of each block, while vertical reinforcing bars are The lower end is buried in the foundation, and the vertical reinforcing bars are placed on the back side of the horizontal reinforcing bars.Then, the hanging reinforcing bars are locked to the key-shaped locking parts, and the vertical reinforcing bars are supported by the hanging reinforcing bars. It is characterized in that a net made of iron wire or the like is fixed to a hook, the rear side is filled with back-filling chestnut stone, and the hollow part surrounded by the back surface of the mirror surface, the restraining material, and the net is filled with back-filling concrete. Concrete block retaining wall.