JPH0762334B2 - Revetment block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revetment block, and more specifically, it is made of a concrete molded body or the like and is laid for the purpose of wave breaking, rooting, slope protection, etc. in revetment construction on various beaches and rivers. It is related to the revetment block.

[0002]

2. Description of the Related Art Conventionally, a revetment block made of a concrete molded body has been used in revetment works having various purposes as described above. Construction using such a revetment block is easy to transport and handle and is efficient. It is widely used because it can be manufactured and constructed.

If the revetment blocks are simply laid side by side on the construction site, there is a possibility that the revetment blocks may move or change their posture after the construction due to the force of waves and the pressure of the flow of the river. In addition, if the posture of the revetment blocks and the intervals between the revetment blocks are varied in the laid condition, a sufficient revetment effect cannot be exerted. Therefore, it has been considered to lay the revetment blocks in an accurate posture and at intervals and to connect the revetment blocks to each other in order to prevent movement after construction.

Specifically, a separately prepared bridge block is fitted and locked to the revetment blocks arranged adjacent to each other,
Method for connecting and fixing seawall blocks to each other (Japanese Patent Laid-Open No. 60-5
9231 gazette), a method of connecting the concavo-convex fitting portions provided on the side end surface of the seawall block in the horizontal direction to connect the seawall blocks to each other in the front-rear direction (JP-A-2-73460, JP-A-2-20703). Gazette) etc. have been proposed.

[0005]

However, the above-described conventional connecting structure for the seawall blocks has problems that the construction is troublesome and that the seawall blocks are not sufficiently fixed and connected to each other. As mentioned above, the method of connecting and fixing the seawall blocks with another bridge block, etc.
The connection and fixing of the revetment blocks will be fairly reliable, but in addition to the revetment blocks, it will take time and effort to prepare and prepare connecting members such as bridge blocks, and the construction work will be troublesome and the construction period will take a long time. There is a drawback that the construction cost is high. In addition, the method of connecting the seawall blocks in the horizontal direction with the uneven fitting part of the end surface is not so troublesome in construction,
Since the revetment blocks can move horizontally even when connected, there is a possibility that the revetment blocks will be separated after the construction due to the gaps between them.

Therefore, an object of the present invention is to solve the above-mentioned problems in the conventional revetment blocks, securely and firmly connect the revetment blocks to each other, and prevent the revetment blocks from moving after the construction. It is to provide a revetment block that can be easily and efficiently constructed.

[0007]

A revetment block according to the present invention for solving the above-mentioned problems is a revetment block capable of engaging and coupling with each other at both ends, and the engaging coupling means at both ends has one end of the revetment block. Along the upper surface and the lower surface at the other end
Along each of the thickness of less than half of the thickness of the revetment block
And extending portion extending outward in the tip side of each of the extending portion
Overhang to the left and right from and a locking portion which projects toward the opposite side of the revetment block.

The material of the revetment block is, like the ordinary revetment block, a concrete molded body, a concrete molded body in which a reinforcing material such as a reinforcing bar is embedded, a synthetic resin or a reinforced resin, a steel plate. Assembled products or a combination of these materials are used. The revetment block is in the form of a thick plate such as a rectangle, and has engaging connecting means which can be connected to each other at opposite ends thereof, and the engaging connecting means has a symmetrical structure in which the upper and lower sides are opposite to each other. I have it. Specifically, first, of the opposing end portions of the seawall block, one end is provided with an extending portion that extends outward along the upper surface of the seawall block, and the other end is
It has an extending portion extending outward along the lower surface of the seawall block. The thickness of the extension is half the thickness of the entire seawall block.
Set to less than a minute. Thickness not exceeding half of the thickness
It is preferable to set about half of the above. Each extension portion is provided with a locking portion that extends laterally from the side of the tip of the extension portion and projects toward the opposite surface side of the revetment block. That is, in the extending portion extending along the upper surface of one end,
Includes a locking portion respectively protrude toward the lower surface side to its tip horizontally, the extending portion extending along the lower surface of the other end, the
Locking portions are provided on the left and right ends , respectively , which project toward the upper surface side. At both ends of such a seawall block,
As described above, the arrangement structure of the extending portion and the locking portion is a symmetrical structure in which the top and bottom are opposite to each other. However, it is not necessary for the extending portion and the locking portion to have a strict symmetrical shape up to the detailed shape, and if the mutual engaging and connecting action described later can be achieved, the uneven shape and the size of the detail will be somewhat different. It doesn't matter.

The projecting length of the locking portion is preferably set to be approximately the same as the thickness of the extending portion that engages and connects the locking portion. If the tip surface of the locking portion is set to be flush with the surface of the extending portion of the opposing end portion, when the revetment blocks are engaged and connected, the tip surface of the locking portion and the extending portion Since the surface constitutes a continuous plane, the laying surface of the entire revetment block can be a flat plane. Also, if the length of the locking portion is set so as to project from the surface of the revetment block, it is possible to exert a wave-dissipating action or a locking action on the ground at the projecting portion. Furthermore, at both ends of the revetment block, if the engaging connection means consisting of the extension portion and the locking portion is arranged with a step in the up-down direction, when constructing the revetment block on an inclined surface or stair surface, It is convenient because the steps or slopes are naturally attached just by horizontally connecting and connecting the seawall blocks.

The extending portions and the locking portions at both ends as described above may be integrally formed with the extending portions being connected to each other as they are, but they are integrally formed with a central portion having a fixed length interposed therebetween. It is preferable to keep it. The shape and structure of the central part can be freely configured, for example, a rectangular parallelepiped with a height from the upper surface to the lower surface of the revetment block, along the extending portion extending along the upper surface of one end and the lower surface of the other end. Examples thereof include an inclined plate shape or a staircase plate shape in which extending extending portions are obliquely connected. The width of the central portion is preferably the same as or slightly narrower than the width of the extending portion. If the structure of the entire revetment block including this central part has a symmetrical structure in which the upper and lower sides are opposite to each other on both sides of the center, whether the front or back surface of the revetment block is up,
The structure is exactly the same, which is convenient for laying and handling revetment blocks. It is possible to provide a through hole for pile driving to fix the revetment block to the ground in the central part of the revetment block, or to provide a structure such as metal fittings for fixing various members to the revetment block. . For these detailed structures, structures similar to those of ordinary revetment blocks can be freely combined and adopted.

The revetment blocks are connected and fixed to each other by using the engaging and connecting means composed of the extending portions and the locking portions at both ends thereof. That is, the end portion having the locking portion protruding from the upper surface toward the lower surface side and the end portion having the locking portion protruding from the lower surface toward the upper surface side are connected to each other in a hooked state. It will be fixed. In this state, the revetment blocks cannot move in any of the front, rear, left, and right directions. In this way, by successively connecting a plurality of revetment blocks, it is possible to form a revetment block row in which a plurality of revetment blocks are integrally connected. By arranging a large number of such revetment block rows in the lateral direction, the revetment blocks can be laid on the entire predetermined construction surface.

The inner surface distance between the engaging portions at both ends of the revetment block, that is, the total length of the extending portions at both ends and the central portion, is four times the width of the engaging portions measured in the length direction. If it is set to be the same as or wider than the length of the ridge, when laying a plurality of revetment block rows side by side, the concave part formed on the side surface of the narrow central part and the locking part protruding to the left and right It is possible to fit and connect the convex portions formed by the above, and it is possible to exert the effect of preventing the bank protection bank rows from being displaced or moved.

The revetment block according to the present invention is a so-called revetment work, which is used for various types of civil engineering works such as revetments, hoisting grounds, breakwaters, etc. for the purpose of wave breaking, rooting, slope protection, etc. on the coast of the sea or river It can be used for the purpose of laying a block-shaped structure on. Further, the detailed shape, size, material, etc. of the revetment block can be freely changed according to the purpose of the construction and the state of the construction site.

[0014]

[Function] The seawall blocks are connected and fixed to each other by extending the one of the seawall blocks along the upper surface with the end portion where the locking portion projects from the upper surface toward the lower surface and the other seawall. Of the block, the extending portion is arranged along the lower surface, and the end portion where the locking portion projects from the lower surface toward the upper surface side is combined so that the extending portions overlap each other in the vertical direction. At this time, the locking part of one revetment block
Enter the inside of the locking part of the other revetment block,
Be arranged on the side of the extension. That is, the locking portions are fitted to each other with the extending portions on the opposite side hooked in a hook shape. As a result, the revetment blocks are engaged and connected in a state in which movement is restricted in any of front, rear, left and right directions.

In the actual connecting work, the end portion of the retaining portion side projecting upward of the revetment block previously laid is engaged with the retaining portion projecting downward of the revetment block to be laid next. The engagement connection by the locking portion and the extending portion as described above can be performed only by mounting the end portion on the side of the portion. Therefore, the construction work itself can be carried out by suspending the revetment block with a crane or the like and laying it down to a predetermined position in order without performing any special work for engaging and coupling.

In this way, if the revetment blocks are laid in such a manner that the end portions having the engaging portions and the extending portions are engaged and connected in sequence, the revetment block row in which a plurality of revetment blocks are integrally connected is constructed. Will be constructed. By arranging a plurality of such revetment block rows, it becomes possible to lay the revetment blocks on a construction surface of an arbitrary size. By using the concavo-convex structure formed on the sides of the revetment block rows by the difference in the widths of the locking part and the central part, the concavo-convex structure can be connected by fitting them together, The gaps formed on the sides of the rows can be filled with each other, and the revetment block rows can be reliably positioned and connected and fixed, so that the construction state of the revetment blocks becomes more stable. However, even with only one bank of revetment blocks, in which a large number of revetment blocks are engaged and connected at both ends, since it has sufficient weight and a large ground contact area, it is possible to prevent displacement or movement after construction. In addition, if a certain gap between the revetment block rows improves the wave-dissipating effect, the concavo-convex structure formed on the side of the revetment block rows may not be fitted.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 2 to 5 show the overall structure of the revetment block 10. Revetment block 10
Consists of a concrete molded body similar to a normal revetment block, and the overall outer shape is a roughly rectangular thick plate.
The revetment block 10 is provided with extending portions 22 and 32 and engaging portions 24 and 34, which are engaging and connecting means, at both ends of a central portion 40 having a rectangular parallelepiped shape.

The extending portions 22 and 32 have the same width as the central portion 40, have a thickness of about half of the central portion 40, and extend horizontally from the central portion 40 toward the outside. Extension part 22 on one side
Is disposed on the upper surface side of the central portion 40, and the extension portion 3 on the other side is
2 is arranged on the lower surface side of the central portion 40. Locking part 2
Reference numerals 4 and 34 are provided so as to project to the left and right ends of the extending portions 22 and 32, and have a prismatic shape projecting in a direction orthogonal to the extending portions 22 and 32, that is, in the thickness direction of the seawall block 10. Locking portion 24 connected to the extending portion 22 on the upper surface side
Is protruding toward the lower surface side, and the locking portion 34 connected to the extending portion 32 on the lower surface side is protruding toward the upper surface side.
As clearly shown in FIG. 3, the distance between the locking portions 24, 24 and the distance between the locking portions 34, 34 are determined by the extension 2
2 or slightly wider than the width of the extension 32. As clearly shown in FIG. 4, each locking portion 24, 34
Has a surface flush with the surfaces of the extending portions 32 and 22 on the opposite side. As shown in FIG. 3, the lengths of the extending portions 22 and 32 of the portion existing between the central portion 40 and the locking portions 24 and 34 are the width W of the locking portions 24 and 34 measured in the same direction. It is set to be almost the same or a little longer. In addition, the distance L between the engaging portions 24 and 34 on both sides is determined by
It is set to be slightly wider than four times the width W of 34.

The revetment block 10 having the above structure is
With respect to the center of the central portion 40, the extending portions 22 and 32 and the engaging portions 24 and 34 at both ends have a symmetrical structure in which the upper and lower sides are opposite to each other. Therefore, it is not necessary to consider the front and back when laying the seawall block 10. FIG. 1 shows a state in which seawall blocks 10 having the above structure are connected.
The revetment blocks 10 and 10 engage and connect the extending portions 22 and 32 and the locking portions 24 and 34 provided at both ends thereof with each other. That is, first, after laying one revetment block 10 at a predetermined position, when laying the next revetment block 10, the revetment block 10 is lifted and the locking portions 24 and 24 projecting downward at one end thereof are From the upper side of the revetment block 10 laid earlier, to the end portion on the side of the locking portions 34, 34 protruding upward, beyond the locking portions 34, 34, the locking portions 34, 34 and the central portion 40. It is lowered so that it fits into the portion of the extending portion 32 between. Then, the locking portion 2
The extension portion 32 is sandwiched between the portions 4 and 24, and the extension portion 22
Is sandwiched between the locking portions 34, 34, and the locking portions 24, 24 and the locking portions 34, 34 are in contact with each other on their inner surfaces. That is, the locking portions 24, 24 and the locking portion 34,
34 is hooked like a hook.

In this state, the revetment blocks 10 and 10 are connected and fixed in a state in which movement is restricted in any of front, rear, left and right directions. Further, since the upper surface of the extending portion 22 and the tip surfaces of the locking portions 34, 34 are on the same plane, the upper surface of the revetment block 10 is configured to be flat, and the lower surface of the extending portion 32 and the locking portions 24, 24. Since the tip surface is also the same surface, the lower surface of the seawall block 10 is also flat. Therefore, when a plurality of revetment blocks 10 ... Are connected and fixed, the upper and lower surfaces of the revetment block row A form a flat continuous plane. Then, on the side of the revetment block row A, a convex portion formed by the protruding portions of the engaging portions 24 and 34 engaged with each other,
This means that a concave-convex structure in which concave portions formed by the central portion 40 having a width narrower than this is alternately arranged is provided.

FIG. 6 shows a state in which a plurality of banks A of revetment blocks are connected. Multi-row revetment block row A,
The side walls are arranged side by side, and the convex portions of the locking portions 24 and 34 of the one revetment block row A are arranged on the other revetment block row A
If it is fitted in the recess formed by the central portion 40, it is possible to lay the revetment block rows A and A in line with each other without any gap. In this state, the revetment block rows A, A are reliably restricted from moving at least in the longitudinal direction of the rows. In this way, if a large number of revetment block rows A ... Are connected and laid, it is possible to fill the construction surface of any size with the revetment blocks 10. The laying surface of the seawall block 10 constructed in this way is
As described above, since the upper surface of the extending portion 22 and the tip end surface of the locking portion 34 are connected on the same surface, the entire construction surface can be configured as a flat continuous flat surface.

Next, FIGS. 7 and 8 show a revetment block 10 having a central portion 40 having a structure different from that of the above embodiment. In this embodiment, the thickness of the central portion 40 is set to be approximately the same as the thickness of the extending portions 22 and 32 on both sides, and the inclination connecting the extending portion 22 on the upper surface side to the extending portion 32 on the lower surface side is set. It has a plate shape. With such a structure, the amount of concrete material can be reduced as compared with the above-described embodiment. Further, since the upper surface of the inclined central portion 40 is arranged at regular intervals on the construction surface, the entire construction surface cannot be configured as a flat continuous surface. It is possible to exert a wave-dissipating effect due to the uneven shape.

Next, FIGS. 9 and 10 show an embodiment in which the structure of the central portion 40 is further different. In this embodiment, a step-like step is provided near the center of the central portion 40, and the extension portions 22 provided on both sides of the central portion 40 are provided.
The locking portion 24, the extending portion 32, and the locking portion 34 are arranged with a step in the vertical direction. That is, a step H is formed between the tip surface of the locking portion 34 and the surface of the extension portion 22 on the opposite side, and between the tip surface of the locking portion 24 and the surface of the extension portion 32 on the opposite side. Is attached.

The revetment blocks 10, 10 having such a structure
As shown in FIG. 10, when the ridges are engaged and connected, they are laid so that the height changes stepwise in the lengthwise direction with a step H at the central portion 40 of each revetment block 10. Become. Therefore, if the construction surface of the seawall block 10 is an inclined surface or a staircase surface, simply connecting the seawall blocks 10 of this embodiment in the horizontal direction,
It can be laid naturally along slopes and stairs, facilitating construction. In addition, since a step-like step is formed on the upper surface of the construction surface, it is possible to use this as a step for a person to go up and down, or to improve the wave-dissipating effect by the step-like unevenness.

[0025]

As described above, according to the revetment block of the present invention, the revetment blocks can be reliably moved forward, backward, leftward and rightward by the engaging and connecting means by the extending portion and the locking portion. In addition to connecting and fixing, the work of connecting the revetment blocks is a very simple work that only puts the end of the other revetment block on the end of one revetment block, making the construction of the revetment block reliable and efficient. Can be done.

Moreover, since the extending portion and the locking portion provided at the opposite ends of the seawall block have a symmetrical structure in which the top and bottom are inverted, whichever surface of the seawall block is faced up is exactly the same. It is not necessary to consider the front and back of the revetment block when transporting or storing the revetment block, and to consider the surface where the revetment block is hung by a crane during construction work. The revetment block can be handled very easily, and in this respect as well, the construction efficiency of the revetment block can be greatly improved.

If the revetment blocks are securely regulated to move forward and backward and to the left and right and are connected and fixed, the revetment blocks may move or the gaps between the revetment blocks may be separated after the construction, resulting in a revetment effect. And the wave-dissipating effect is not impaired, and it becomes possible to maintain a good revetment structure for a long period of time by resisting wave forces and ground liquefaction.

[Brief description of drawings]

FIG. 1 is a perspective view showing a connected state of a revetment block showing an embodiment of the present invention.

[Fig. 2] Perspective view of the seawall block

FIG. 3 is a plan view of the above.

FIG. 4 is a front view of the above.

FIG. 5 is a right side view of the above.

FIG. 6 is a plan view of a bank of revetment blocks.

FIG. 7 is a perspective view of a revetment block showing another embodiment.

FIG. 8 is a front view of the above.

FIG. 9 is a perspective view of a revetment block showing another embodiment.

FIG. 10 is a front view of the above.

[Explanation of symbols]

 10 revetment block 22, 32 extension part 24, 34 locking part 40 central part A revetment block row

Claims (1)

[Claims] 1. A seawall block capable of engaging and connecting to each other at both ends, wherein the engaging and connecting means at both ends are arranged along the upper surface at one end and along the lower surface at the other end, respectively.
Seawall with a extending portion which extends outwardly at less than half the thickness of the thickness of the revetment block, projecting to the left and right from the tip side of each extending portion, and a locking portion which projects toward the opposite side of the revetment block block.