JPH04366215A - Concrete block connecting body and marine structure using its connecting body - Google Patents

Abstract

PURPOSE:To improve workability by connecting almost rectangular parallelepiped concrete blocks to each other to be arranged in parallel at intervals in the width direction and in the shapes of connecting rods on skews, and by connecting them rotatably to each other in the length direction. CONSTITUTION:With each shaft hole 6 to be thrust on each center of each spacer projected-section 5 of each one shorter block 1, each shaft hole 11 to be thrust on each center of each spacer projected-section 10 of each two longer blocks 2 is permitted to coincide. Then, the shaft holes 6, 11 are penetrated with connecting rods, and the blocks 1, 2 are connected to each other to be arranged in parallel in the shapes of the rods on skews, and a first block set Aa is formed. Besides with the shaft holes 6 of the two shorter blocks 1, the shaft holes 11 of the one longer blocks 2 are respectively permitted to coincide, and the shaft holes 6, 11 are penetrated with the rods, and a second block set Ab is formed. Besides, into a space between the oneend sections of the longer blocks 2 of the block set Aa, the other end section of the longer block 2 of the block set Ab is inserted, and the coincided shaft hole 11 is penetrated with the rod and they are connected to each other, and a concrete block connecting-body A1 is formed.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a concrete block connected body constructed by connecting a plurality of concrete blocks for wave dissipation, fish and shellfish cultivation, root hardening, etc., and a marine structure using the same. Regarding.

0002

BACKGROUND OF THE INVENTION Conventionally, such a concrete connecting body is described in Japanese Patent Publication No. 63-26203. This concrete block connection body consists of multiple plate-shaped concrete blocks (hereinafter referred to as plate blocks).
A separate spacer is interposed between them to maintain a constant distance between them, and a plurality of iron rods are used to tighten and connect them in parallel in a skewered manner so that they do not move relative to each other.

0003

[Problems to be Solved by the Invention] However, with this system, many angular ridgelines are formed and there are gaps between the board blocks, so although it is effective as a reef for cultivating abalone etc., The stability against waves and the wave-dissipating effect were not sufficient.

[0004] In other words, since the plate blocks are tightly connected to each other, the overall structure is the same as a single concrete block with a plurality of equally spaced gaps, and the wave force received by a single plate block is This spread to other board blocks as well, and since the board blocks were not in a mutually supportive relationship with each other against the wave force, the entire board could be blown away when it was hit by a large wave force.

Furthermore, since a plurality of plate blocks are connected together with separate spacers in a skewered manner, when assembling it, iron rods must be skewered through the plurality of plate blocks and a large number of spacers one after another. Not only that, but the task of assembling a set of connected concrete blocks was extremely difficult. In addition, in order to install concrete blocks over a wide area, it is necessary to assemble them one by one and then lay out a large number of connected concrete blocks one by one, resulting in very poor workability and parts management. Furthermore, it did not have good adaptability to changes in the installation surface. Therefore, this conventional concrete block connection was not suitable for a wide range of wave-dampening purposes.

The present invention is intended for wide range wave dissipation, etc., and it is easy to assemble each concrete block connected body, and the blocks are mutually supported and stabilized against wave force. The purpose of the present invention is to improve the workability of installing a concrete block connected body and the adaptability to changes in the installation surface.

[0007]

[Means for Solving the Problems] A concrete block connected body according to the present invention connects substantially rectangular concrete blocks in parallel in a skewered manner with connecting rods at predetermined intervals in the width direction. They are rotatably connected to each other in the length direction by connecting rods to form a chain structure.

[0008] When connecting the concrete blocks in the length direction, a chain structure can be easily obtained by making the concrete blocks partially staggered and skewering them with connecting rods. In that case, it is best to use concrete blocks of different lengths and stagger their ends to create a skewered connecting rod.

[0009] By laying a plurality of connected concrete blocks with the above structure on the seabed or on a rubble embankment built on the seabed, it can be used as a marine structure for stable wave dissipation over a wide range or for aquaculture, etc. It can be done.

0010

[Operation] The concrete block connected body according to the present invention has the following features:
A set of almost rectangular concrete blocks connected in parallel at a predetermined interval (hereinafter referred to as a block set)
, and a plurality of sets thereof are connected in the longitudinal direction so as to be rotatable with each other. Therefore, if the blocks are installed so that the chaining direction (length direction) is parallel to the direction in which waves travel, waves can be repeatedly dissipated by a plurality of chained block sets.

[0011] Since the block sets are rotatably linked to each other, the wave force received by one block set does not directly spread to other block sets, and the block sets do not react to the wave force. They mutually help each other and control the disturbances of other block groups. In other words, since the concrete block connected body has a flexible structure that can be bent freely, the probability that the whole unit will fall over or be blown away by wave force is very low, and the stability as a whole is extremely high.

0012

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The concrete block connected body according to the present invention includes a concrete block 1 as shown in FIGS. 1 and 2 (hereinafter referred to as a short block) 1, and a longer concrete block as shown in FIG. 3 (hereinafter referred to as a long block). 2 are mainly used, and their shapes will be explained first.

[0013] The short block 1 has a substantially rectangular shape that is long from front to back, and has large trapezoidal convex portions 3 at both the front and rear ends of the horizontal upper and lower surfaces.
are integrally provided, and a large recess 4 is formed between the protrusions 3 at both ends of the upper and lower surfaces. In addition, front and rear spacer convex portions 5 in the shape of a truncated cone are integrally protruded from one vertical side surface, and two front and rear shaft holes 6 penetrating in the width direction (left and right) at the centers of these front and rear spacer convex portions 5; A horizontal hole 7 that is larger than this and penetrates in the width direction is provided between the front and rear spacer convex portions 5. The tip surface of the spacer convex portion 5 is spherical.

[0014] The long block 2 is 2 times the length of the short block 1.
It is almost a rectangular shape with a length slightly shorter than double (for example, 1.8 times), and its width is the same as short block 1, and the convex part of short block 1 is formed at both the front and rear ends and the middle part of the horizontal upper and lower surfaces. A convex portion 8 similar to that of the portion 3 is provided integrally, and a large concave portion 9 is formed between them. In addition, three spacer protrusions 10, which are the same as the spacer protrusions 5 of the short block 1, are integrally provided at the front, rear, and middle portions of one vertical side surface, and these three spacer protrusions 1
Three shaft holes 11 are provided at the center of the spacer 0, and two lateral holes 12 are provided between each of the three spacer convex portions 10.

Regarding the dimensional relationship between the short block 1 and the long block 2, as shown in FIG. The portion 2b from the intermediate convex portion 8 to the convex portion 8 at the other end is shorter than the portion 2a. However, the three spacer protrusions 10
The distance L is the same, and this distance is also the same as the distance between the two spacer convex portions 5 of the short block 1.

The concrete block connected body A1 according to the first embodiment of the present invention shown in FIGS. 5 to 7 is a first embodiment in which two long blocks 2 are connected in parallel on both sides of one short block 1. 1 block set Aa and 1 long block 2
It has a structure in which two short blocks 2 are connected in parallel on both the left and right sides of the second block set Ab in front and back (lengthwise direction), and three rows are formed in the width direction. ing.

That is, the first block set Aa is 1
Two long blocks 2 in two shaft holes 6 of short blocks 1
The two shaft holes 11 are made to coincide with each other, and the connecting rod 13 is passed through the matched shaft holes as shown in FIG. 8, and a nut 14 is attached to the end of the connecting rod 13 as shown in FIG.
etc. are fixed to create one short block 1 and two long blocks 2.
These are connected in parallel in a skewered manner. These three blocks are maintained at a constant distance by spacer protrusions 5 and 10, and are always maintained in a parallel fixed state by two connecting rods 13. Grooves are provided at both ends of the shaft holes 6 and 11 to accommodate the nuts 14 and the like so that they do not protrude from the block surface.

Further, the second block set Ab includes two shaft holes 6 of one long block 2 in two shaft holes 6 of two short blocks 1.
The shaft holes 11 of the books are aligned with each other, and the connecting rods 13 are similarly passed through the matching shaft holes to connect the two short blocks 1.
and one long block 2 are connected in parallel in a skewered manner. These three blocks have spacer protrusions 5 and 10.
The two connecting rods 13 keep the two connecting rods 13 at a constant distance from each other, and the two connecting rods 13 keep the two connecting rods 13 in a parallel fixed state.

These two block sets Aa,
For Ab mutual, insert the other end of the latter one long block 2 between one end of the former two long blocks 2, and insert the connecting rod into the matching shaft hole 11 as shown in FIG. 1
5 are similarly passed through, and these three long blocks 3 are connected with being staggered in the length direction, and there are constant gaps between the six blocks 1 and 2 on the left and right and front and rear. It is formed.

Therefore, the blocks do not displace each other between the three blocks of the first block set Aa and the three blocks of the second block set Ab, but the blocks between the first block set Aa and the second block set Ab do not displace each other. Between the block set Ab of
As shown in FIGS. 6 and 7, the pairs are vertically rotatable (flexible) with respect to the connecting rod 15 as a fulcrum. In this case, since the tip surfaces of the spacer projections 5, 10 are spherical, the pair can be rotated smoothly, and damage to the spacer projections 5, 10 themselves can be prevented.

Next, the concrete block assembly A2 of the second embodiment shown in FIG. 11 consists of two block sets Ab having the same structure as the second block set Ab shown in FIG. 2 block sets Ac of No. 3, a total of 4 sets are chained back and forth in the order of Ab, Ac, Ac, Ab, and the second block set Ab and the third block set are
The third block set Ac is connected to each other by a long block 2, and the third block set Ac is connected to each other by one short block 1.

That is, the third block set Ac is different from the second block set Ab.
The end of the long block 2 is sandwiched between two short blocks 1, and a connecting rod 15 is passed through the matching shaft holes 6 of these three blocks to connect them.
It is rotatable with respect to the second block set Ab about the fulcrum. Furthermore, the two third block sets Ac share one short block 1, with both ends thereof sandwiched between two short blocks 1, and connecting rods 15 are inserted into the matching shaft holes 6, respectively. are connected to each other through the two connecting rods 15, and are freely rotatable relative to each other at two fulcrums formed by the two connecting rods 15. In each of the third block sets Ac, the two short blocks 1 on both sides are held parallel and fixed to each other by two connecting rods 15. This concrete block connected body A2 also has a configuration of three rows in the width direction.

The concrete block assembly A3 of the third embodiment shown in FIGS. 12 and 13 uses a short block 1 and a half block 16 as shown in FIG. This half block 16 is a mere rectangular body with a length approximately half that of the short block 1 (slightly shorter than the short portion 2b of the long block 2). A spacer protrusion 17, which is the same as the spacer protrusion 5 of the short block 1 and the spacer protrusion 10 of the long block 2, is integrally provided on one side of the half block 16 at an eccentric position, and a shaft hole 18 is similarly provided through the spacer protrusion 17. It is provided.

[0024] The concrete block connected body A3 includes a block set Ad which is a combination of four short blocks 1 and two half blocks 16, and a block set Ad which is also a combination of four short blocks 1 and two half blocks 16. It has a structure in which block sets Ae and Ae, which are symmetrically combined, are rotatably linked by a connecting rod 15, and are arranged in four rows in the width direction. The gap in the longitudinal direction between the short block 1 and the half block 16 is narrowed so that the half block 16 cannot freely rotate on its own. In this concrete block connected body A3, the block set Ad and the block set Ae are mutually rotatable on the axis a-a, and the two short blocks 1 and the two half blocks 16 of the block set Ad are freely rotatable together on the axis b-b,
Further, the two short blocks 1 and the two half blocks 16 of the block set Ae are rotatable together on the axis c-c.

In the case of this concrete block connected body A3, first, the half block 16 rotates slightly about the connecting rod 13, and then the two short blocks 1 and the two half blocks 16 move along the axis bb or Connecting rod 15 of axis c-c
The block group Ad or Ae is then rotated around the fulcrum.
rotates about the connecting rod 15 along the axis a-a as a fulcrum. Therefore, before the external force is applied to the axis a-a, the connecting rod 1
3 and then passes through the connecting rod 15 of axis bb or axis c-c to the connecting rod 15 of axis aa,
The burden on the connecting rod 15 on the axis aa, which is the main shaft, can be reduced.

FIG. 14 shows an example in which the concrete block connections A1 and A2 (or A3) are used for an artificial reef (submerged embankment). The rubble embankment R is constructed into a trapezoid shape by piling up many stones, etc., and its almost horizontal top surface Ra is lower than the sea level WL, and from the top surface Ra, the slopes Rb on both the front and back sides are extended to the front and back edges. A low, almost horizontal base surface Rc follows. The top surface Ra of this rubble embankment R,
A large number of connected concrete blocks A1 and A2 are appropriately selected and laid out on the slope Rb and the base surface Rc. The arrangement may be arranged in orderly rows, or may be arranged in a staggered manner front to back or left to right.

[0027] Concrete block connections A1 and A2
has a chain structure as described above, so its first or second
The suspension wire 16 is passed through the three horizontal holes 7 and 12 lined up on the same line of block group Aa and Ab, and the whole is suspended by a crane, etc., and while being lowered, the chained block groups are sequentially knocked down from the lower group. It can be installed efficiently. Furthermore, even if there is a bend between the top surface Ra and the slope Rb of the rubble embankment R, and between the slope Rb and the base surface Rc, the block set will bend accordingly, so that neither of the concrete block connected bodies A1 and A2 Also, it blends well with the installation surface. Moreover, since each block 1, 2 is formed with convex portions 3, 8 and concave portions 4, 9, it can be installed in a stable state even if the installation surface is uneven.

As described above, a large number of connected concrete blocks A1 and A2 are laid out on the rubble embankment R, and the entire area of the top surface Ra, slope Rb, and base surface Rc is covered to form an artificial reef. The gaps between the concrete blocks A1 and A2 may be filled with stones as shown in FIG. 15, or may be left unfilled. It is also possible to connect adjacent concrete block connectors A1 and A2 using the horizontal holes 7 and 12.

[0029] In this way, the concrete block connected body A
In the artificial reef using A1 and A2 on the surface, a continuous gap is formed by the spacer convex parts 5 and 10 between the blocks 1 and 2 arranged on the left and right of each concrete block connection body A1 and A2, and the front and rear blocks are Since a jagged gap is formed between them, while allowing seawater to flow in the gap between the left and right blocks 1 and 2, the jagged gap and convex parts 3 and 8 between the front and rear blocks, and The horizontal holes 7 and 12 scatter and dissipate the waves, and this action also
A large number of connected concrete blocks A1 arranged in front and behind
, A2 will be repeated.

[0030] In addition, with respect to wave force, each block set of concrete block connected bodies A1 and A2 has the above-mentioned gap between the blocks 1 and 2 that constitute it, so that it cannot receive uplift force. In addition to being small, the block sets have a chain structure that allows them to rotate freely, so the lift force received by one block set does not directly affect other block sets. Further, even if one block set is lifted up by the wave force, other block sets connected to it will restrict this, so the stability of the concrete block combinations A1 and A2 against the wave force is extremely high.

The above-mentioned gap formed between the blocks 1 and 2 dissipates waves while allowing seawater to flow therethrough, and thus becomes a suitable place for cultivating seafood and seaweed. When this gap is filled with stones, the stability of the connected concrete blocks A1 and A2 is further increased, and a particularly good habitat can be provided for shellfish such as abalone.

[0032] Concrete block connected bodies A1, A2 (
Alternatively, A3) may be the same or different in Figure 16.
They can also be stacked as shown in the figure. In this case, between the upper and lower concrete block connections,
The convex portions 3 and 8 enter the concave portions 4 and 8 or the gap between the blocks to restrict back and forth movements.

[0033] Also, concrete block connected body A1,
A2 may be laid directly on the seabed for wave dissipation and root consolidation, or as shown in Figure 17, blocks 1 and 2 may be laid vertically, that is, horizontally, and installed in a ring shape. It can be used in a variety of ways, such as by putting stones in it to create a fish reef. Furthermore, the combination of blocks 1, 2, and 16 constituting the concrete block connection body is not limited to the forms shown in Figures 5, 11, and 12, and the combination form, number of blocks to be combined, and combination The overall shape and number of columns can be freely selected. Furthermore, the shapes of the blocks 1, 2, and 16 are not limited to those shown in the embodiments.

[0034]

Effects of the Invention In the concrete block connected body according to the present invention, a plurality of substantially rectangular blocks are connected in parallel in a skewered manner at predetermined intervals to form a block set, and the plurality of block sets are rotated relative to each other. They can be freely connected to form a chain structure, and have the following effects:

(1) Since there is a gap between the blocks in each block set, there is little lift force, and since the block sets have a chain structure that allows them to rotate freely, one block set The lift force received by the block will not directly affect other block groups. Even if one block set floats due to wave force, other block sets in a chain state will restrict this, in other words, multiple block sets will mutually help each other to resist the wave force. It has extremely high stability against wave forces.

(2) The entire structure can be suspended by a crane or the like, and while being lowered, the blocks in the chain can be laid down sequentially from the lowest level to the next level. (3) It has a flexible structure as a whole, and if the installation surface is bent, it will bend accordingly, so it conforms very well to the installation surface. (4) Since gaps are formed between the blocks, it can be used as a suitable place for cultivating fish, shellfish, and seaweed. (5) Manufacturing is easy because the weight and size of each block can be reduced.

(6) When connecting the concrete blocks in the length direction, a chain structure can be easily obtained by making the concrete blocks partially offset and skewering them with connecting rods. In that case, it is better to use concrete blocks of different lengths.

(7) Assembly is facilitated by integrally providing a spacer protrusion on the side surface of each concrete block and maintaining a predetermined distance between the blocks with the spacer protrusion.

(8) By laying a plurality of connected concrete blocks with the above-mentioned features on the seabed or on a rubble embankment built on the seabed, stable wave dissipation over a wide range or marine cultivation for aquaculture, etc. can be achieved. It can be a structure.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one short block constituting a concrete block assembly according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view of one long block constituting the concrete block assembly according to the present invention.

FIG. 4 is a side view showing the dimensional relationship among the short block, long block, and half block.

FIG. 5 is a plan view of a first example of a concrete block connection according to the present invention.

FIG. 6 is a side view of the same as the above in a bent state.

FIG. 7 is a sectional view of the same.

8 is a sectional view taken along the line XX in FIG. 5. FIG.

9 is a sectional view taken along the line Y-Y in FIG. 5. FIG.

FIG. 10 is an enlarged view of a portion of FIG. 8;

FIG. 11 is a plan view of a second example of a concrete block connection according to the present invention.

FIG. 12 is a plan view of a third example of a concrete block connection according to the present invention.

FIG. 13 is a side view of the same.

FIG. 14 is a side view of an example in which the concrete block connected bodies of the first example and the second example are used for an artificial reef.

FIG. 15 is a plan view of the same.

FIG. 16 is a side view of a usage example in which the first example concrete block connector is stacked on the second example concrete block connector.

FIG. 17 is a plan view of an example of use in which the concrete block connected body is erected horizontally.

[Explanation of symbols]

A1 Concrete block connection body A2
Concrete block connector A3 Concrete block connector 1 Short block 2 Long block 3 Convex portion 4 Concave portion 5 Spacer convex portion 6 Shaft hole 7 Lateral hole 8 Convex portion 9 Concave portion 10 Spacer convex portion 11 Shaft hole 12 Lateral hole 13 Connecting rod 15 Connection Rod 16 Half block 17 Spacer convex portion 18 Shaft hole R Rubble embankment

Claims (6)

[Claims] Claim 1: Approximately rectangular concrete blocks are connected in parallel in a skewered manner with connecting rods at predetermined intervals in the width direction, and are rotatably connected to each other in the length direction by the connecting rods. A concrete block connected body characterized by having a chain structure. 2. The concrete block connected body according to claim 1, wherein when connecting the concrete blocks in the length direction, the concrete blocks are partially staggered and skewered by connecting rods. 3. The concrete block connection body according to claim 2, wherein concrete blocks of different lengths are used and their ends are staggered to form a skewered connecting rod. 4. A spacer projection is integrally provided on the side surface of each concrete block, and the spacer projection maintains a predetermined distance from each other in the width direction. Concrete block connection. 5. A marine structure comprising a plurality of connected concrete blocks according to any one of claims 1 to 4 laid on the seabed. 6. A marine structure comprising a plurality of the concrete block connected bodies according to claim 1 laid on a rubble embankment built on the seabed.