JPH08311889A - Flexibly connecting type retaining wall block - Google Patents

Abstract

PURPOSE: To easily construct a curved retaining wall, and to easily enable the length adjustment in the right and left direction with regard to the box type block suitable even for the construction of a greening retaining wall, without causing a clearance between the right and left blocks due to earth pressure when a convexly curved surface is constructed. CONSTITUTION: A block is provided with a cylindrical parts 3a, 3b on both the right and left sides thereof, and the respective cylindrical parts are provided with a ring-shaped projection 2 projected upward or downward from the end of the cylinder thereof, or a ring-shaped groove 5 to be fitted to the ring-shaped projection. The block is constituted by two kinds of blocks: a first block provided with the ring-shaped projections 2 on both sides thereof, and a second block provided with the ring-shaped grooves 5 on both sides thereof. The block is constituted by only one kind of block 1 provided with a ring-shaped projection 2 on the one cylinder 3a and a ring-shaped groove 5 on the other side cylinder 3b. The respective steps of the retaining wall is constructed by turnably connecting the ring-shaped projection 2 with the ring-shaped groove 5 of the blocks being mutually adjacent right and left, and the wall is constructed by placing the upper block so as to be receded from the lower block.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block for constructing a retaining wall by stacking it, and a curved retaining wall can be easily constructed, and a box suitable for constructing a green retaining wall. It relates to a shaped block.

[0002]

2. Description of the Related Art As a block for constructing a retaining wall having a desired height by stacking, a block, a box block, a double girder block, etc. are known. The Machimo block constructs a retaining wall that is integrated in the height and width directions by pouring concrete into the voids of the stacked blocks and solidifying. On the other hand, in the box-shaped block, the upper one is retracted from the lower one and piled up, and the vacant space of the block is filled with rubble stones, etc. to construct a non-integrated retaining wall. Inside the box-shaped block, by providing steps and fitting pairs on the upper and lower surfaces of the block, the front and rear position of the upper block with respect to the lower block is specified, and the inclination of the retaining wall is accurately specified. However, the blocks in the left-right direction are not normally fitted to each other. In addition, although the cross girder block does not integrate the blocks with each other, the blocks are stacked in a state in which they are fitted to each other to form a retaining wall integrally connected in the vertical and horizontal directions.

When the retaining wall is a straight flat surface, there is no problem in construction regardless of the structure of the retaining wall. However, when the retaining wall has a curved surface, especially a convex curved surface, the construction of the retaining wall becomes very troublesome. In the intelligent block or box-shaped block, the width (size in the left-right direction) of the backup part of each block is made smaller than the width of the front plate of the block so that a convex curved surface can be formed without interfering with the backup part. There is. On the other hand, it is impossible to construct curved retaining walls with double girder blocks.

[0004] The retaining wall constructed of box-shaped blocks is considered to have insufficient strength and easily collapse because the blocks are not integrated with each other. However, when a large shock or vibration is applied due to an earthquake, etc. Since shock and vibration energy are absorbed by the mutual displacement of the blocks, the resistance to collapse is far greater than that of an integrated retaining wall. However, since the blocks are stacked in such a way that they can be displaced, when a high earth pressure is continuously applied locally, there is a problem that the blocks in that part will shift and the appearance will deteriorate. .

[0005]

The above problems are likely to occur especially when a retaining wall having a convex curved surface is constructed with a box-shaped block. The displacement between blocks in a retaining wall constructed with box-shaped blocks is suppressed to a slight displacement by the cavities filled in the vacant space of the block and the back surface of the block meshing with each other. If it occurs, it is not noticeable, and if it is a concave curved surface, the forward displacement of the block is prevented by the arch action. However, with a convex curved retaining wall, even if there is no problem in terms of strength, there is a gap between the left and right blocks due to the forward movement of the block. However, there is a problem that the appearance is damaged.

The present invention has been made to solve this problem, and in a box-shaped block for constructing a retaining wall that is not integrated, it is easy to construct a curved retaining wall and it is convex. An object of the present invention is to obtain a block having a structure capable of preventing a gap from being generated between the right and left blocks due to the displacement of the blocks due to earth pressure when the curved surface is constructed.

[0007]

Block 1 of the present invention,
Each of the cylindrical portions 1a, 1b includes cylindrical portions 3, 3a, 3b on both sides in the left-right direction, and each cylindrical portion has a ring-shaped projection 2 protruding upward or downward from its cylinder end or a ring-shaped projection fitted with the ring-shaped projection. The groove 5 is provided. In this case, the first block 1a is provided with the ring-shaped projections 2 having the above structure on the cylindrical portions 3 on both sides, and the second block 1b is provided with the ring-shaped groove 5 having the above structure on the cylindrical portions 3 on both sides. It is also possible to adopt a structure having only one type of block 1 having the ring-shaped projection 2 on one of the cylindrical portions 3a on both sides and the ring-shaped groove 5 on the other 3b. .

The former structure has the individual blocks 1a, 1b.
The shape is simplified, and the structure of the mold for molding the block is also simplified. In the case of the latter structure, the main portion 7 is provided in the middle portion of the block, the cylindrical portions 3a and 3b on both sides are halved of the height of the main portion, and one cylindrical portion 3a is formed in the main portion 7.
In the lower half, the other cylindrical portion 3b is provided so as to be connected to the upper half of the main portion 7.

The retaining wall constructed by the above blocks is a ring-shaped projection 2 and a ring-shaped groove 5 of blocks that are adjacent to each other on the left and right.
And are connected to each other about the axis of the cylindrical portion 3 so as to be rotatable relative to each other to construct each stage, and the upper block is retracted from the lower block and simply placed on the lower block. Built by stacking.

[0010]

The block according to claim 1 is the first block 1.
a (or the second block 1b) are arranged side by side, and the second block 1b (or the first block 1a) is placed in a staggered positional relationship with each other, so that the ring-shaped protrusion 2 and the ring-shaped groove 5 are mutually arranged. Each stage is constructed by mounting in a state of being fitted to. The blocks connecting to the staggered rows are
An angle can be freely given around the axis of the cylindrical portion 3, and a convex curved surface and a concave curved surface can be formed by gradually shifting the angle little by little. The ring-shaped protrusion 2 is used for the force of separating the adjacent blocks from each other.
Since the resistance is caused by the fitting of the groove 5 and the groove 5, the gap between the blocks due to earth pressure does not cause a gap between the blocks adjacent to each other on the left and right.

In the block according to claim 2, the cylindrical portion 3b (or 3a) extending from the upper half portion of the main portion 7 is extended from the lower half portion of the main portion of the block on which the cylindrical portion 3b (or 3a) is placed first. Alternatively, the steps of the retaining wall are constructed by sequentially placing the ring-shaped projections 2 and the grooves 5 on the 3b) while fitting them together. The upper stage is constructed by connecting the cylindrical portions 3a, 3b of the blocks which are similarly connected to the left and right at a position retracted from the lower block. The action when constructing a curved surface and the action with respect to the shift of the block are the same as those of the first aspect.

The blocks 1a and 1b of the former claim 1 are
The main part 7 of each block is the block of claim 2.
The structure of each block can be simplified, and thus the structure of the molding die can be simplified. On the other hand, in the latter block 1 of claim 2, it is possible to mold a block having a large lateral width, and the number of blocks used when constructing a retaining wall of the same area can be reduced,
Therefore, it is possible to reduce the number of steps for constructing the retaining wall.

The blocks of the present invention are the blocks 1, 1
In the case where the cylindrical hole 4 having a large diameter is formed on both sides of a and 1b and the main portion 7 is provided, a similar cylindrical hole can be provided in the main portion 7, so that this hole is used as a greening pot. Can be used. Since the block of the present invention constructs the retaining wall in a state where the back side of the block is filled with crushed stone, the watering of the greening pot formed as described above is also good, and the plant planted in the greening pot causes root rot. There is no fear.

The retaining wall constructed from the blocks of the present invention is
The front of each step has a wavy curved surface, and it is also free to construct a winding retaining wall, so it is suitable for constructing a retaining wall that protects the cliff surface of the park, especially a retaining wall with a height of 5 m or less Suitable for building walls.

[0015]

1 to 4 are views showing a first embodiment of the present invention, in which a first block 1a having a cylindrical portion having ring-shaped projections on both sides and a cylindrical portion having ring-shaped grooves at both ends are shown. And a second block 1b provided with. The first block 1a and the second block 1b each have a shape in which two rings are connected in a plan view.
The block 1a is provided with a ring-shaped protrusion 2 extending upward from the inner peripheral side of the upper cylinder end of the cylindrical portion 3 in a plan view. The ring-shaped protrusions 2 are provided in the same shape on the cylindrical portions 3 on both sides of the first block.

On the inner peripheral side of the lower cylindrical end of the cylindrical portion 3 on both sides of the second block 1b, the cylindrical hole 4 has a notched edge and is fitted on the outer periphery of the projection 2 of the first block. A mating ring-shaped groove 5 is formed. This ring-shaped groove 5 is also formed in the same shape in the cylindrical portions 3 on both sides of the second block 1b. The center-to-center distance between the cylindrical portions 3 on both sides is the same in both the first block and the second block, and the wall thickness 6 at the central portion of the block is more than twice the wall thickness around the cylindrical portion 3. It's made slightly thicker. Ring-shaped protrusion 2 and ring-shaped groove 5
And have a dimensional relationship in which they are fitted with a slight play in the radial direction.

As shown in FIG. 5, the first block 1a and the second block 1b formed in such a shape are placed on the first block 1a in which the ring-shaped protrusions 2 are arranged side by side. The two blocks 1b are arranged in a staggered manner so that the first blocks adjacent to each other by the fitting of the ring-shaped projection 2 and the groove 5 are connected to each other via the second block 1b. Each step of the wall is built. As shown in FIG. 6, the first block 1a and the second block 1b can be freely angled around the central axis of the cylindrical hole 4 at their connecting portions, so that the retaining wall surface has a large curvature. However, it is possible to deal with it easily.

Further, since a large angle can be provided between the adjacent blocks while maintaining the connection state between the adjacent blocks in this way, by bending the blocks inward in a V-shape as shown in FIG. It is possible to absorb the deviation of the step length.

FIGS. 8 and 9 show a second embodiment of the present invention, which is an embodiment of the invention according to claim 2 in which a main portion 7 is provided in the middle. The block of the second embodiment has a shape in which three links are connected in a plan view, and the height of the cylindrical portions 3a and 3b on both sides of the block is the central cylindrical main portion 7.
It is half the height of. One of the cylindrical portions 3a extends from the lower half of the main portion 7, and the other 3b extends from the upper half of the main portion 7. A ring-shaped projection 2 similar to that of the first block of the first embodiment is formed on the inner peripheral side upper surface of the upper cylindrical end of the cylindrical portion 3a extending from the lower half, and the cylindrical portion 3 extending from the upper half.
A ring-shaped groove 5 similar to that of the second block of the first embodiment is formed on the inner peripheral side of the lower tube end of b. In the block of the second embodiment, as shown in FIG. 10, the upper half side cylindrical portion 3b of the adjacent block is superposed on the lower half side cylindrical portion 3a of the block previously placed, By connecting the ring-shaped projection 2 and the groove 5 while fitting them, each step of the retaining wall is constructed. The fact that adjacent blocks in each step can freely form an angle around the centers of the cylindrical portions 3a and 3b and the force in the direction that separates the adjacent blocks from each other is due to the ring-shaped projection 2 and the ring-shaped groove 5. Blocking by fitting is similar to that of the first embodiment.

Block 1 of the first and second embodiments
The a, 1b, and 1 are formed in a state where the axes of the cylindrical portions 3, 3a, and 3b are horizontal. A part 13 having a flat outer peripheral surface is provided on a part of the outer circumference of the ring forming the cylindrical parts 3, 3a, 3b and the main part 7 of the block of the illustrated embodiment. It is shown that it becomes a leveling surface (concrete input surface to the formwork).

As shown in FIG. 11, the blocks of Examples 1 and 2 are piled up in multiple stages by filling the rear surface of the blocks of each stage with rubble stones 14 and retracting the upper stage from the lower stage. Thereby, a retaining wall having a desired height is constructed. Then, planting soil is put in the cylindrical holes on both sides of each block and the cylindrical holes of the main part, and plants are planted to form a green retaining wall.

[0022]

According to the block of the present invention, a box-shaped block having a large resistance to shock and vibration is used, and when a retaining wall having a convex curved surface is constructed, a gap is generated between the blocks due to earth pressure. You can build a retaining wall without. Further, the block of the present invention is easy to form a greening pot for cultivating a plant due to its structure, and is also excellent as a block for constructing a greening retaining wall.

[Brief description of drawings]

FIG. 1 is a plan view of a first block according to a first embodiment.

FIG. 2 is a side view of the first block of the first embodiment.

FIG. 3 is a plan view of a second block according to the first embodiment.

FIG. 4 is a side view of the second block of the first embodiment.

FIG. 5 is a side view showing a connected state of the first block and the second block of the first embodiment.

FIG. 6 is a plan view when connecting at an angle.

FIG. 7 is a plan view when adjusting the step length.

FIG. 8 is a plan view showing a second embodiment.

FIG. 9 is a side view showing a second embodiment.

FIG. 10 is a perspective view showing a connected state of blocks of the second embodiment.

FIG. 11 is a cross-sectional view showing an example of a retaining wall constructed by the block of the present invention.

[Explanation of symbols]

 1 block 1a 1st block 1b 2nd block 2 Ring-shaped projection 3 Cylindrical part 3a One side of cylindrical part 3b Other side of cylindrical part 4 Cylindrical hole 5 Ring-shaped groove 7 Main part

Claims (2)

[Claims] 1. A two-type block (1a, 1b) having a cylindrical portion (3) on both sides in the left-right direction, wherein the cylindrical portion of the first block (1a) is a ring-shaped projection 2 protruding from the end thereof. Equipped with
The cylindrical portion of the second block (1b) is provided with a ring-shaped groove (5) that fits with the ring-shaped projection at its cylinder end, and the ring-shaped groove (5) and ring-shaped groove (5 ) And are connected so as to be rotatable relative to each other around the axis of the cylindrical portion (3) to construct each step of the retaining wall, and the flexible connecting type retaining wall block. 2. Cylindrical parts (3a, 3a) are provided on both sides of the main part (7) in the left-right direction.
b), and the cylindrical parts (3a) and (3b) are respectively the main part (7).
It has a height of one half of that of the main part (7a) and one cylindrical part (3a) is connected to the lower half of the main part (7), and the other cylindrical part (3b) is the upper half of the main part (7). One cylindrical part (3a) is provided with a ring-shaped protrusion (2) protruding from the cylinder end, and the other cylindrical part (3b) is fitted with the ring-shaped groove (5). ), The ring-shaped protrusions (2) and
(5) A flexible connection type retaining wall block, characterized in that each stage of the retaining wall is constructed by mutually connecting (5) and (4) so as to be rotatable relative to each other around the axis of the cylindrical portion (3a, 3b).