JPS6114315A - Revetment block and constructing method thereof - Google Patents

Abstract

PURPOSE:To shorten a term of works, by fitting the coupling projections of a plurality of main blocks on coupling projection grooves and by coupling them with rotary coupling shafts. CONSTITUTION:A surface-erosion-proof mat 14 is spread on a slope face 15 and on the mat coupling projections 2 and coupling projection grooves 3 of a plurality of main blocks 1 are mutually combined, and rotary coupling shafts 9 are fitted on shaft bearing slots 7, 8 to form a train of blocks, and after that, the blocks are fitted on the slope face 15. After that, a plurality of longitudinal block rows are laid, and each block is provided in the circumference in close contact with four blocks, and groove couplers 4 are fitted on fitting grooves 4 for coupling which are provided for the block corners.

Description

Detailed Description of the Invention The present invention is suitable for river slope protection and river bed root consolidation. Conventional slope protection works for revetments or river embankments are done by leveling and compacting the slopes, which should not be done without heavy scouring. In some places, mats for surface erosion are laid on the slope as necessary, concrete blocks for bank protection are laid one by one, and each column of blocks lined up in the direction of the slope is connected with iron wire. In addition, each row of blocks carried in the direction of the river flow is connected by connecting rods during construction.

However, this method is very time-consuming to line up one heavy block, and requires skilled workers to connect the vertical and horizontal rows of laid blocks, which takes a long time.In addition, the vertical rows are long. Because they are connected using iron wire, there was a problem with flexibility to accommodate the shape of the slope.Therefore, recently, woven fabric has been used to streamline the installation.

Small concrete blocks formed on a ground erosion prevention mat such as a synthetic resin sheet are mechanically bonded adjacently using a binder such as cement or synthetic resin. By installing the above-mentioned mantra, it has become possible to simultaneously solve the problem of rationalization of construction and flexibility against slopes.

In this case, if the work of attaching the concrete blocks to the mantle is done at the factory, the distance to transport the mat with the blocks glued will be long, and the length of the construction slope will vary depending on the site and will not be uniform. Inventory management at the factory increases expenses, and even when gluing is performed near the site, there are difficulties in double transportation from the bonding processing factory to the site and quality control, and in either case, there are many problems. A solution was desired.

In order to correct this drawback, the present invention provides a connecting protrusion at one end of the block body so that the blocks can be easily connected on site, and the other end matches the protrusion on the body of another block to which the blocks are to be connected. By providing connecting protrusions and connecting them in rows in the vertical direction, a flexible revetment can be constructed using heavy machinery such as a crane without the need to glue blocks onto a mat. For horizontal connection, after vertical connection or installation on a slope, connect the four adjacent blocks using the fitting grooves provided at the corners, and then connect the connecting member with a water barrier projection on the top. There is one that can be fitted and connected to attach to the slope VC-@.

This made it possible to perform flexible bank protection work by ensuring vertical and horizontal connections.

Next, the shape of the block will be explained using the illustrated example.
＾・I will clarify.

Reference numeral 1 denotes a block main body, which in this embodiment has a substantially rectangular planar shape, and has chamfered portions 5 at the outer corners in the longitudinal direction on the square portion of the block main body 1, and a triangular protrusion 6 formed inside the upper part for connection. A fitting groove 4 is provided at one end of the pair of sides a, a vertical connecting projection 2 is provided at one end of the pair of sides a, and a connecting projection groove 3 is provided at the other end into which a connecting projection of another block to be connected to this is fitted. Bearing holes 7 and 8 are provided at the center of the connecting protrusion 2 and the groove 3, respectively, so that they penetrate through each other in a joined state. Said connecting protrusion 2. The upper and lower side surfaces 7/ and s/ of the connecting protrusion groove 4 are respectively set at an angle of about 45 degrees with respect to the side wall 1 of the block body, so that the block body connected around the rotation support @9 1 is connected to each other so that it can be freely bent up to an angle of 45 degrees.The fitting groove for connection is not necessarily provided at each corner, but is provided at two diagonal locations. You can also connect adjacent blocks vertically and horizontally.

Next, we will explain the construction procedure of this construction method using blocks formed in this shape.0 First, a ground erosion prevention mat 1 is placed on the slope 15 that has been pounded and hardened.
4, and the connecting protrusions 2 of the plurality of block bodies 1 are placed on top of the connecting protrusions 2.
．． and connecting protrusion grooves 3 are mutually combined, and the rotary connecting shaft 9 is fitted into the bearing holes 7 and 8, and a plurality of blocks connected sequentially in the slope direction are assembled, and then the construction slope 15 is assembled using a crane or the like.
7. Next, lay multiple rows of blocks in the vertical direction, and then attach the four neighboring blocks to each other and connect the connecting fitting grooves 4 provided at the corners. A connecting groove 13 which also serves as a water control projection and is intended to fit and connect vertical and horizontal blocks inside is fitted into the upper surface.

In this way, the blocks connected in the direction of the slope by the rotary connecting shaft 9 are connected horizontally in the direction of the river flow by sequentially connecting them in the parallel direction using the drain connecting members 12 as shown in Fig. 6, so that the vertical and horizontal directions are uniform. In addition, the water barrier connecting material 12 is in a biting state as the triangular surface 6 of the fitting groove 4 and the connecting recess 13 fit together. Since they are firmly connected and a space is formed on the back side of the fitting groove 4, (b) the blocks can have flexibility along the slope via the rotational connecting shaft 9. It can also be used for construction on curved surfaces.

Also, as shown in Fig. 5, it is easy to make suitable excursions through fitting grooves having a shape that has flexibility so that the blocks can respond to changes in the slope by aligning the back slopes s5 of the fitting grooves 4. It is.

As explained above with reference to the illustrated embodiment, as shown in Fig. 2, a hollow part 11 is provided in the center of the block body that communicates with the upper and lower parts, and after laying, filler concrete, chestnut stone, and other materials are planted in the hollow part to surround the block. The selection may be made according to the environment.

It is not necessary to fit the drain connection material in each square, and the connection points may be determined depending on the water flow of the river or the legal slope.
Various types of water control revetments can be constructed by making creative efforts, such as using molded blocks with pre-installed grooves at the connection points.

Other connections in parallel direction (combined with connection in the direction of the slope).Before construction, a certain number of blocks are connected vertically and horizontally to form a single net-like sheet, both ends of which are lifted up with a crane and laid on the slope as it is. It is also easily possible to do so.

Particularly when there is a lot of water flowing in the river bed, it is necessary to change the water flow in the river before proceeding with construction, but the wood construction method is particularly effective in deep water construction where there is a lot of water in the river bed, and it greatly improves construction efficiency compared to conventional methods. I can raise it, so I'll put it down.

In this way, with this construction method, vertical connections in the direction of the slope are performed by inserting rotating connection shafts into the connection protrusions, and horizontal connections in the direction of water flow are simply connected on site using convex connection members that have a water flow damping effect. It is possible to construct revetment work with flexibility to accommodate slopes in a short time.

Therefore, there is no need to perform time-consuming joint preparations using connecting metal fittings or mortar for product connecting parts as in the past. Because of this, the installed Shitablock is always in close contact with the ground, making it possible to build a strong embankment.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the block of the present invention, Fig. 2 is a block of another embodiment, Fig. 3 is a perspective view of the water control connecting member, Fig. 4 is a 01lI side view of the fitting part, Fig. 5 6 is a side view showing other fitting parts, and FIGS. 6 and 7 are a plan view and a side view showing the construction status. b...Space, 1...Block body, 4
... Fitting groove, 5' ... Rotating inclined part, 1
2. Old: Drain connecting material, 16: Foundation concrete. Patent applicant: Chiyoda Giken Kogyo Co., Ltd.

Claims (4)

[Claims] (1) A connecting protrusion is formed on one side of the block body, a connecting protrusion groove that matches the protrusion is provided on the opposite side, and the connecting protrusion is fitted into the protrusion groove and connected by a rotating connecting shaft,
Connecting fitting grooves are integrally formed on the corners of the block body, and connecting members are inserted into the fitting grooves in order to vertically and horizontally connect four adjacent blocks with the fitting grooves in close contact with each other. A method of constructing blocks for seawalls that is characterized by being fitted and bonded to the blocks. (2) The construction method for a bank protection block according to claim 1, characterized in that the connecting member is fitted into the fitting groove after being connected by a rotary connecting shaft. (3) A connecting protrusion is provided on one side of the block body integrally with the main body, and a connecting protrusion groove that matches the protrusion is provided on the opposite side so that they can be connected to each other so that they can be bent. A concrete block for a seawall, characterized by being provided with a fitting groove into which a connecting member connected to the concrete block is fitted. (4) A concrete block for a seawall, characterized in that the block for a seawall according to claim 3 is provided with fitting grooves in diagonal directions.