JP3118346U - Seawall block - Google Patents

Abstract

To provide a revetment block capable of constructing a curved revetment and capable of vegetation and environmental conservation.
A concrete block is formed in a box shape from four side walls 1, 2, 3, 4 and a bottom wall 5, and the short side wall 3, 4 is connected to another revetment block A. Pin holes 11 and 12 for inserting the body portion of the engaging pin P1 to be formed are formed vertically, and the bottom wall 5 has a head portion of the engaging pin P1 inserted in another revetment block A Is formed so as to be movably accommodated. The loose fitting recess 13 is formed so that the width W1 at the center portion is narrow and the width W2 becomes wider toward both ends as viewed from the bottom. The concrete block is made of porous concrete.
[Selection] Figure 1

Description

  The present invention relates to a revetment block. More specifically, the present invention relates to a concrete block for revetment used for reclaimed vegetation and environmental conservation revetment.

As conventional concrete blocks, there are the following prior arts 1 and 2 (see Patent Documents 1 and 2).
Prior art 1 is a porous block having functions such as a water passing function, a root of a plant, or a sucking-out prevention of earth and sand. A porous material is integrated on the back side of the precast concrete block to provide a function to prevent water, roots and earth and sand from being sucked out. The porous material is porous concrete. A retaining wall is constructed by using this back porous block, and the back porous material is provided with water supply means on the inner surface side or the outer surface side of the block.

  Prior art 2 is a concrete block that is resistant to corrosion and wear, can be used not only for crushed stones and crushed stones, but also for crushed stones and soils, is suitable for greening, and has a water purification effect. It is a concrete block used for slope protection and scour prevention. The concrete block is formed with a substantially cylindrical portion and has a bottom. The substantially cylindrical portion is used by being filled with various filling materials such as chestnut, crushed stone, crushed stone, soil, or molten slag. Connecting bars are provided on the side walls of the blocks, and the blocks connect the connecting bars with a connecting tool.

However, when building the retaining wall with the blocks of the conventional examples 1 and 2, the pin is inserted into the hole formed in the wall surface of each block, and the adjacent block is joined, but there is no margin between the pin and the hole. There is a problem that a curved revetment cannot be constructed.
Further, the block of Conventional Example 2 has the following problems because it is cylindrical and has no bottom.
In the case of the steep retaining wall 100 shown in FIG. 13 (A), the soil is not settled down by rainwater, or there is no water penetration from the natural mountain into the block 101, and hydration of the vegetation is only rainwater. The soil nutrients are not replenished.
In addition, in the case of the gently sloping retaining wall 100 shown in FIG. 5B, the drainage hole 102 alone cannot drain completely, causing root rot, vegetation is replenished only with rainwater, and soil nutrients are not replenished. .

JP-A-11-81350 JP2002-30635

  In view of the above circumstances, the present invention aims to provide a revetment block that can build a curved revetment, has no outflow of soil, can be replenished with nutrients from natural ground, and is suitable for vegetation and environmental conservation. And

The revetment block of the first device is a concrete block configured in a box shape from four side walls and a bottom wall, and a body portion of an engagement pin for coupling with another concrete block is inserted into the side wall. The pin hole is formed in a vertical direction, and the bottom wall is formed with a loose fitting recess for movably receiving the head of the engaging pin inserted in another concrete block. And
The revetment block according to the second invention is characterized in that the loose fitting recess is formed so that the width of the central portion is narrow as viewed from the bottom, and becomes wider toward both ends.
The revetment block according to the third invention is characterized in that the concrete block is made of porous concrete.

According to the first device, since it is a box-shaped block with a bottom, it is possible to hold and hold soil for vegetation and locally generated soil during construction, and it is easy to maintain vegetation and the environment. Also, even if the blocks are stacked, the engaging pins of the lower block fit into the loose fitting recesses of the upper block, so that they can be restrained so as not to be separated from each other, and the engaging pins move freely in the loose fitting recesses. Adjacent blocks can be arranged to be inclined with respect to each other, and curved revetment blocks can be constructed.
According to the second device, since both ends of the loose fitting recess are wide, the head of the engaging pin of the lower block can be moved in the width direction. For this reason, a curved revetment can be constructed.
According to the third device, water can be drained and drained through the pores of porous concrete, and water and nutrients can be replenished from the natural ground, so that vegetated trees and plants can be grown, which is suitable for environmental protection. .

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a revetment block according to an embodiment of the present invention. FIG. 2 is a plan view of the revetment block. FIG. 3 is a side view of the revetment block.

  As shown in FIGS. 1 to 3, the revetment block A of the present embodiment is a concrete block configured in a box shape from four side walls 1, 2, 3, 4 and a bottom wall 5. In addition, 1 and 2 are the long side, and 3 and 4 are the short side. Since it is a box-like block with a bottom like this, it is possible to hold and hold vegetation soil and locally generated soil during construction, and there is an advantage that vegetation and environmental conservation are easy.

  On the short side walls 3 and 4, pin holes 11 and 12 are formed vertically to insert the body portions of the engagement pins P1 (see FIG. 6) for coupling with other revetment blocks. The two pin holes 11 and 12 are formed in the side walls 3 and 4, respectively, the pin hole 11 is located on the front side from the middle position of the depth dimension of the side walls 3 and 4, and the pin hole 12 is the side wall 3. , 4 is located on the rear side from the middle position of the depth dimension.

As shown in FIG. 2, the bottom wall 5 of the revetment block A is formed with a loose fitting recess 13 that movably accommodates the head of the engagement pin P1 inserted in another revetment block A. . The position where this loose fitting recess 13 is formed is substantially directly below the side wall 1 on the front surface side and is an intermediate position in the width direction.
The loose fitting recess 13 is formed so that the width W1 of the central portion 13a is narrow and the width W2 is widened toward both end portions 13b when viewed from the bottom.
Engagement recesses 14 are also formed upward from the bottom surface at two end portions that are intersections of the side wall 1 on the long side and the side walls 3 and 4 on the short side. The engagement recess 14 is sized to fit the head of one engagement pin P.

  Two pin insertion holes 21 and 22 are formed in the side walls 1 and 2 on the long side at intervals in the horizontal direction. In the pin insertion holes 21 and 22, a coupling pin P2 for coupling with another revetment block A is inserted.

  As shown in FIG. 4, the revetment block A of the present invention may be one in which reinforcing ribs 6 are attached between the side walls 1, 2, 3, 4 and the bottom wall 5. In this case, the rigidity of the entire block is improved.

FIG. 5 shows the partial lid B. The partial lid B is a member that covers a part of the revetment block A, has the same width dimension as the revetment block A, and has a smaller depth dimension than the revetment block A.
The illustrated partial lid B is formed by forming ribs 32 on the upper surface of the flat plate 31, but is not limited to such a shape, and may have a function of covering a part of the revetment block A.
At both ends in the width direction of the partial lid B, pin through holes 33 for attachment to the revetment block A are formed.

  The revetment block A and the partial lid B in this embodiment are made of porous concrete. Porous concrete is concrete having many fine bubbles. With this structure, water can be drained from the natural ground through the pores of the porous concrete, so that vegetated trees and plants can grow, which is suitable for environmental protection.

Next, a stacked bank revetment using the revetment block A of the present embodiment will be described with reference to FIGS.
FIG. 6 is a cross-sectional view of a tiered bank protection using the bank protection block of the present invention. 7A is an explanatory diagram of deep stacking, and FIG. 7B is an explanatory diagram of shallow stacking. 8A is a partially enlarged front view of the revetment of FIG. 5, and FIG. 8B is a partially enlarged plan view thereof. FIG. 9 is a cross-sectional view of a revetment with a partial lid on the revetment block of FIG.

  As shown in FIG. 6, the stacked bank revetment is a revetment formed by sequentially stacking an upper revetment block A on a lower revetment block A. The bottom revetment block A is installed on the foundation concrete C. WL indicates the normal water level of the river.

  As shown in FIG. 7A, when the pin hole 11 in front of the lower block and the loose fitting recess 13 are connected by the engaging pin P1, the steep slope is stacked, and the inclination angle of the revetment increases. . Further, as shown in FIG. (B), when the pin hole 12 on the back side of the lower block and the loose fitting recess 13 are coupled with the engaging pin P1, the slope is gradually inclined and the inclination angle of the revetment is reduced. .

  As shown in FIG. 8A, when stacked, the heads of the engagement pins P1 inserted in the pin holes 11 or 12 of the side walls 3 and 4 in the revetment block A on the lower side are It fits in the loose fitting recess 13 in the revetment block A on the upper side. For this reason, it can restrain so that it may not fall apart. In addition, as described above, since both ends of the loose fitting recess 13 are wide, the head of the engaging pin 11 of the lower block A can be moved in the width direction. For this reason, as shown in FIG. 8B, a revetment having a curved shape in plan view can be constructed.

  FIG. 9 shows a case where a partial lid B is attached to a revetment block A that is stacked. As shown in the figure, for the revetment block A below the water level WL, if the gap with the revetment block A on the upper stage side is covered with a partial lid B, the inside of the block can be sealed, and the sediment that has entered the inside is discharged. Can be prevented.

  Next, flat pile revetment by the revetment block A will be described. FIG. 10 is a cross-sectional view of a flat pile revetment using the revetment block of the present invention. FIG. 11 is a partially enlarged plan view of the revetment in FIG.

  In the case of a flat pile revetment, adjacent revetment blocks A can be coupled with a coupling pin P2 inserted into the pin insertion holes 21, 22. For this reason, it can restrain so that it may not fall apart. This flat pile revetment is suitable for revetments with a gentle slope.

The revetment block of the present invention has the following advantages both in the case of stacking shown in FIG. 12A and in the case of flat stacking shown in FIG.
1) Due to the presence of the bottom wall 5, there is no outflow of land.
2) Since it is made of porous concrete, water and nutrients can be replenished from the natural mountain through the pores of the side walls 1 to 4 and the bottom wall 5, and the living environment of living organisms can be made comfortable. This facilitates vegetation and environmental conservation.

It is a perspective view of a revetment block concerning one embodiment of the present invention. It is a top view of the bank protection block. (A) is a front view of the revetment block, and (B) is a side view. It is a perspective view of a revetment block concerning other embodiments of the present invention. (A) is a perspective view of a partial lid used in the revetment block of the present invention, (B) is a plan view of the partial lid, and (C) is a side view of the partial lid. It is sectional drawing of the stacked pile revetment using the revetment block of this invention. FIG. 4A is an explanatory diagram of steep grade stacking, and FIG. (A) is a partially enlarged front view of the revetment in FIG. 5, and (B) is a partially enlarged plan view. FIG. 6 is a cross-sectional view of a revetment with a partial lid on the revetment block of FIG. 5. It is sectional drawing of the flat pile revetment using the revetment block of this invention. FIG. 10 is a partially enlarged plan view of the revetment in FIG. 9. It is explanatory drawing of the advantage of the revetment block of this invention. It is explanatory drawing of the fault of the conventional revetment block.

Explanation of symbols

1, 2, 3, 4 Side wall
5 Bottom wall 11, 12 Pin hole
13 Free fitting recess

Claims (3)

A concrete block configured in a box shape from four side walls and a bottom wall,
A pin hole for inserting a body portion of an engagement pin for coupling with another concrete block is formed vertically on the side wall,
A revetment block is provided in the bottom wall, in which a loose fitting recess is formed to accommodate the head of an engagement pin inserted in another concrete block so as to be freely movable. The revetment block is characterized in that the loose-fitting recess is formed so that the width of the central portion is narrow and the width increases toward both ends when viewed from the bottom. The revetment block, wherein the concrete block is made of porous concrete.