JPH0336572Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is constructed in front of the foundation work (foundation work) to prevent riverbank scouring and protect the work and the foundation work. This article relates to blocks used for foot protection and drainage works.

[Conventional technology]

The conditions that such a foot protection work must meet are that it can withstand the force of bedrock, be adaptable to changes in the riverbed, be easy to construct, be highly durable, and have appropriate flexibility and It is necessary to have surface roughness to moderate the flow velocity, and good interlocking between the structures is also important.

On the other hand, dams built in riverbeds to control river flow reduce the flow velocity of rivers, stabilize embankments and riverbanks, prevent riverbed scouring,
The purpose is to preserve the shape of the riverbed.

In the above-mentioned foot protection work and water diversion work,
Irregular concrete blocks (hollow triangular blocks, tetrapods, triple blocks, hollow care, etc.) have recently been used frequently.

[Problem that the invention attempts to solve]

It is possible to manufacture blocks of the same quality in large quantities using steel formwork, but it is difficult to assemble the formwork, pour concrete, harden it, remove the formwork, and hold it horizontally. It has the disadvantage that the construction period is longer because it takes a considerable number of days to transport and manufacture the blocks.

Furthermore, a block constructed by connecting rectangular cubes made of concrete with bolts has been proposed, but since the blocks are bolt holes, there is a drawback that the strength of the structure is insufficient.

There are two ways of stacking blocks: layered stacking and random stacking, and depending on the type of block, the stacking method, porosity,
The degree of engagement and roughness differ, and in the case of random stacking, some blocks may be unsuitable, so special care must be taken in selecting them.

All of these are secondary products made of concrete, and it is hard to say that the structures they have built are in harmony with the surrounding natural environment.

The object of the present invention is to provide a block for foot hardening and drainage work that can solve the above problems.

[Means for solving problems]

This idea was devised with a focus on landscape design based on the preservation of the natural landscape of rivers, especially in response to the recent needs of the people for affluence. block for
Three long frame units with rectangular cross sections each forming a space for inserting stones, etc. are formed from highly rigid steel bars, and the side surfaces of each frame unit intersect with each other, and the A unit connecting plate is welded to the side surface, and adjacent frame units are integrally connected via the unit connecting plate.

〔Example〕

Hereinafter, the present invention will be specifically explained based on embodiments shown in the accompanying drawings.

In FIGS. 1 and 2, 1, 2, and 3 are each constructed by combining high-rigidity steel bars 4, and have long rectangular cross-sections that form spaces A, B, and C filled with stones, etc. It is a body unit.

Furthermore, as shown in FIGS. 1 and 2, the frame units 1, 2, and 3 are crossed in a perpendicular state, and a connecting plate 5 is attached to each crossing side by welding. ing.

FIG. 3 shows the detailed structure of the connection plate 5.

As shown in the figure, the back surface of the connecting plate 5 is attached to a steel bar 4 on one side of the frame units 1, 2 by welding. Further, the connecting plate 5 has four through holes formed in corresponding positions, and by inserting bolts 6 into these through holes and screwing nuts 7 onto the bolts 6, the connecting plates 5 facing each other can be connected. , 5 are combined.

With this configuration, by tightening the nut 7, the frame units 1 and 2 can be firmly connected to each other.

Further, in FIGS. 4 and 5, reference numeral 8 denotes an opening/closing door attached to one end of each frame unit 1, 2, and 3 via a rotary joint 9 so as to be openable and closable.
can rotate 270 degrees around the rotational joint 9. As a result, after opening the opening/closing door 8, the stones, etc. 10 can be put into the filling spaces A, B, and C in the manner described later, and then the openings of the frame units 1, 2, and 3 are covered. As shown in Fig. 6, the steel bar 4 on the free end side of the opening/closing door 8 is connected to the frame unit 1,
U-shaped bolts 11,
Stones, etc. 10 can be held within the frame units 1, 2, and 3 by fixing them with a clamping device 14 consisting of nuts 12 and fixing plates 13, thereby constructing a block for foot protection and diversion works in the form shown in Fig. 7. can do.

[Effect of idea]

With the configuration described above, the present invention can achieve the following effects.

The frame unit is made of a steel bar with sufficient rigidity, so even if the unit is suspended by a crane or the like through the steel bar, the steel bar will not bend, making it easy to move and transport the frame unit. can do.

The frame unit can have a large surface roughness.

Since the structure of the frame unit itself is made of stone or the like, the permeability coefficient within the structure is large, and even when the flow velocity is high, a small structure is required.

In the case of the frame unit, foot protection work, and dam work, the natural ecosystem can be secured by providing a habitat and spawning ground for small animals that live in rivers.

Since natural stone can be used as the main material,
The structural form does not differ from the surrounding environment,
It is possible to create a harmonious structural group in terms of river environment formation.

The main material is not limited to natural stone, but it is possible to form concrete blocks at the work site without using formwork, etc., and use this concrete block in places where it is difficult to secure the required quantity of natural stones. In this case, it is possible to use a mixture of natural stone and concrete blocks, or to put only concrete blocks into the frame unit, and the main material can be freely selected depending on the existing stone situation at the construction site. Construction becomes easy and manufacturing costs can be reduced.

In the case of irregularly shaped concrete blocks, it is necessary to prepare steel formwork for approximately 10% of the number of blocks manufactured to increase production efficiency. for example
When manufacturing 1000 irregularly shaped concrete blocks, it is necessary to prepare 100 steel formworks.
Therefore, it is necessary to maintain and store the molds in stock at all times, which requires a large amount of capital investment.

In contrast, in the present invention, since the frame unit can be produced in a factory, it can be produced in a short period of time and at low cost through an integrated process, and the production equipment can also be inexpensive, resulting in great economic effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a rectangular frame unit used in a foot protection/drainage block made of steel bars according to the present invention; Fig. 2 is a front view taken from the line shown in Fig. 1;
3 is a sectional view taken along the line of FIG. 2, FIG. 4 is a detailed view of the opening, FIG. 5 is a sectional view taken along the line of FIG. 4, FIG. 6 is a sectional view showing the clamping device, and 7.
The figure is a perspective view of a block for foot hardening and diversion work with stones etc. loaded. 1, 2, 3: Frame unit, 4: Steel bar, 5: Connection plate, 6: Bolt, 7, 12: Nut,
8: Opening/closing door, 9: Rotating joint, 10: Stone, etc., 1
1: U-shaped bolt, 13: Fixing plate, 14: Clamp device, A, B, C: Space filled with stone, etc.

Claims (1)

[Scope of utility model registration request] Three long frame units with rectangular cross sections each forming a space for inserting stones, etc. are formed from highly rigid steel bars, and the side surfaces of each frame unit intersect with each other, and the A block for foot hardening and drainage work, characterized in that a unit connecting plate is welded to the side surface and adjacent frame units are integrally connected via the unit connecting plate.