JPH0643026U - Block for revetment - Google Patents

Abstract

(57) [Summary] [Purpose] For a revetment block that is mainly used for gently sloping dikes, it has good wave-dissipating properties and at the same time can be used safely without destroying the surrounding landscape. It is to provide a means by which the possible stair tilt can be configured. [Structure] Both the plates 1 and 2 are stacked with the wave-dissipating plate 1 on top and the floor plate 2 on the bottom, and the gap 3 provided between the plates 1 and 2 is large on the enlarged side 1b of the wave-dissipating plate 1. The plates 1 and 2 are tilted so that they are small on the base 1a side of the wave-eliminating plate 1, and these plates 1 and 2 are connected and integrated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a revetment block with high wave-dissipating efficiency.

[0002]

[Prior art]

 Conventionally, there are various types of revetment blocks that are laid on sloping banks such as coasts and rivers, typified by tetrapods and various wave-dissipating blocks. In order to attenuate the energy, it is required to have a function to reduce wave launch, overtopping, and reflection, and it is desired to prevent wave erosion more effectively by improving the wave-dissipating function.

[0003]

[Problems to be solved by the device]

 By the way, conventional revetment blocks are often laid for the purpose of wave breaking on steeply sloped bank where large waves hit, and they are suitable for being installed on a gently sloped bank and have a wave-dissipating function. It can be said that there are few excellent ones. In addition, since the conventional revetment block has a shape that pursues wave-dissipating properties, the appearance in the installed state is often complicated and the landscape of the beach or riverbed is often destroyed. However, since the gentle sloped dike is also a place where people and the sea and people and rivers come into contact with each other, it does not damage the landscape and is constructed so that it can be used safely and comfortably on the coast or in the river. Is desired.

The object of the present invention is to provide good wave-dissipating properties for revetment blocks mainly used for gently sloping dikes, and at the same time, to use them safely without disturbing the surrounding landscape. It is to provide a means by which a tilt can be constructed.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the revetment block of the present invention has a substantially fan-shaped wave-dissipating plate and a floor plate of arbitrary shape, which are vertically stacked, and the gap formed between the both plates is the expansion side of the wave-dissipating plate. The two plates are tilted so that they are large and small on the base side of the wave-dissipating plate, and these plates are connected and integrated on the base side of the wave-dissipating plate.

[0006]

[Action]

 According to the above means, the substantially fan-shaped wave-dissipating plate and the floor plate are integrated through the connecting part of the fan base, and the fan-shaped base expands from the fan base toward the fan arc side along the fan arc side between both plates. A gap is formed. If the above-mentioned revetment blocks are laid in a horizontal row on the slope of the sloping bank, and the next block rows are sequentially arranged one row above the block row, a substantially fan-shaped wave-dissipating wave is formed on the surface of the slope where the blocks are laid. Plates are arranged in a scale and appear, and the stairs are formed by vertically stacking the rows of block rows along the inclined surface. In addition, the block rows that overlap stepwise along the inclined surface are fitted in the gaps of the upper block rows with the fan bases of the lower block rows with a gap between them. The mutual gaps form a wave-dissipating cavity whose upper surface is covered by the fan arc of the wave-dissipating plate, and these wave-dissipating cavities connect vertically and horizontally.

Therefore, when a wave rushes to the sloped surface on which the above-mentioned block is laid, in the process in which the wave rises up the stairs formed by the row of blocks, the upper and lower wave-eliminating plates are separated from each other. It is remarkably intruded into the gap formed between them and absorbed, and then flows back through the gap that connects vertically and horizontally as a wave-eliminating cavity.

[0008]

[Effect of device]

 Since the revetment block of the present invention is constructed as described above, in the sloping levee in which the block of the present invention is laid, the inrushing waves are formed between the wave-eliminating plates of the upper and lower block rows that are laid in a stepwise manner. It can be absorbed in the gaps one after another, and can be swiftly flowed back by passing through the gap that communicates with the wave-eliminating cavity. According to this, the launch of waves, overtopping, and reflectance can be efficiently reduced, and erosion can be effectively prevented by good wave-dissipating properties. In addition, since water absorbed in the gap between the wave-eliminating plates of the upper and lower block rows quickly returns after passing through the gap that communicates as the wave-eliminating cavity, there is no suction due to waves. Furthermore, when the block of the present application is laid on a gently sloping surface, it forms a gentle staircase surface composed of fan-shaped wave-dissipating plates, so that the gently sloping surface at the water's edge does not impair the landscape of the coast or river. Can be used safely and comfortably as a place for recreation.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In the concrete block a for revetment shown in FIGS. 1 to 5, a substantially fan-shaped wave-dissipating plate 1 and a substantially quadrangular floor plate 2 are superposed with an appropriate gap 3 therebetween, and the plates 1 and 2 are wave-disintegrated. The plate 1 is integrally connected by a connecting part 4 provided on the base side of the plate 1. The wave-dissipating plate 1 superposed on the upper surface side of the floor plate 2 is a thick-walled plate formed into a substantially fan-shaped plane as shown in FIG. 1, and an arc-shaped non-slip 1c is continuously formed on the surface thereof. Several recesses are formed. On the other hand, the floor plate 2 is a thick plate formed in a substantially quadrangular shape as shown in FIG. 5, and the wave-dissipating plate 1 has a corner 2a aligned with the corner on the base end 1a side. Overlaid on the underside of plate 1. The corners 2a of the above-mentioned floor plate 2 and the corners 2b opposite to the corners 2b are formed with contact surfaces 2a 'and 2b' notches which contact each other when the blocks a are laid side by side, and the corners 2b are fan-shaped. The base plate 2 is slightly projected from the enlarged side 1b. In addition, the corners 2c. Projections 2c and 2d are formed on 2d, and abutting surfaces 2c 'and 2d' are also formed on the end surfaces thereof.

The above-mentioned wave-dissipating plate 1 and the floor plate 2 are vertically stacked with a required space therebetween, and the space between the two is provided by the connecting portion 4 provided in the half-side of the wave-dissipating plate 1 base 1a. They are connected together. As shown in FIGS. 1, 2 and 4, the connecting portion 4 is formed in a fan shape having a base portion 1a, which is one corner of the wave breaking plate 1, as a base point. Connected and integrated by way of. Therefore, by connecting and integrating the wave-eliminating plate 1 and the floor plate 2 through the connecting portion 4 as described above, the gap 3 is formed between the plates 1 and 2 along the side of the wave-eliminating plate 1 on the enlarged side 1b. Further, the wave breaking plate 1 and the floor plate 2 are mutually inclined in such a manner that the gap 3 is large on the enlarged side 1b of the wave breaking plate 1 and small on the base portion 1a side of the wave breaking plate. The spacing is maintained.

As shown in FIGS. 6 to 8, the revetment block a configured as described above is laid on the sloping surface b of a relatively gently sloping bank provided on a shore, a river, or the like. As shown in FIG. 8, the block a is laid in a horizontal row with respect to the inclined surface b while abutting the contact surfaces 2c ′ and 2d ′ on both left and right sides of the floorboard 2, and the blocks are arranged in parallel with the inclined bank. The column a1 is formed. The block a is entirely laid on the inclined surface b of the inclined bank while arranging similar block rows a2 and a3 on the upper side of the block row a1. The block rows a1, a2, and a3 described above are arranged in a state of being shifted by 1/2 pitch in the parallel direction with the upper and lower block rows of each row, whereby the convex portions of the laying plate 2 arranged in one horizontal row are arranged. It is laid in such a manner that it fits into the recesses in the upper and lower block rows. Dedicated blocks a'and a "are laid on the uppermost stage and the lowermost stage of the inclined surface b.

By laying the block a as described above, the substantially fan-shaped wave-dissipating plates 1 appear in a scale-like arrangement on the surface of the slope b on which the block a is laid, and the block row a 1, The steps a2, a3, ... Stack vertically along the inclined surface b to form a staircase (FIGS. 6 and 7). Therefore, the lower block row a 2 is in the gap 3 of the upper block row a 3 along the inclined surface b, and the base 1 a of the block row a 1 is in the gap 3 of the block row a 2 with a gap c therebetween. Mate sequentially. The gaps 3 between the adjacent blocks a communicate with each other in a zigzag pattern in the left-right direction as a wave-dissipating cavity d whose upper surface is covered by the enlarged side 1b of the wave-dissipating plate 1. A mesh-like wave-dissipating cavity d is formed under the wave-dissipating plate 1 of each block a by connecting d at each bent portion of the zigzag.

Therefore, when a wave rushes to the inclined surface b on which the block a is laid, in the process in which the wave rises up the stairs formed by the block rows a1, a2, a3 ,. , A2, a3, ... In addition, the water that has entered the wave-eliminating cavity d from the gap c quickly flows down along the slope while passing through the cavity d.

As described above, in the sloping levee in which the block a is laid, the wave that rushes into the gap c formed between the wave-eliminating plates 1 of the upper and lower block rows a1, a2, a3, ... After absorbing one after another, it can pass through the wave-eliminating cavity d and quickly flow back, so that wave launching, overtopping, and reflectance are efficiently reduced, and good erosion is achieved by good wave-dissipating property. Can be prevented. Furthermore, when the block a is laid on a gently sloping surface, the fan-shaped wave-dissipating plates 1 gather to form a gentle step surface, so that the gently sloping surface at the water's edge can be maintained without damaging the landscape of the coast or river. It can be used safely and comfortably as a place for recreation.

Further, in the revetment block a configured as described above, the block itself has a low center of gravity, so that it is excellent in stability when laid on the slope b and has a large covering area. Moreover, the number of units used per unit area can be reduced, and there is also an advantage that construction can be performed easily.

[Brief description of drawings]

FIG. 1 is a plan view showing a revetment block embodying the present invention.

FIG. 2 is a bottom view of the block.

FIG. 3 is a front view of the block.

FIG. 4 is a rear view of the block.

FIG. 5 is a side view of the block.

FIG. 6 is a partially cutaway plan view showing an inclined levee on which a revetment block of the present invention has been laid.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a plan view showing a laying pattern of blocks.

[Explanation of symbols]

 a ... Block for revetment 2 ... Floorboard b ... Sloping surface 3 ... Gap 1 ... Wave-dissipating plate 4 ... Connection part 1a ... Base part 1b ... Enlarged part

Claims (1)

[Scope of utility model registration request] 1. A substantially fan-shaped wave-dissipating plate and a floor plate having an arbitrary shape are vertically stacked, and a gap formed between the plates is large on the expansion side of the wave-dissipating plate and small on the base side of the wave-dissipating plate. Blocks for seawalls in which both plates are inclined so that they are connected together and these plates are connected together at the base side of the wave-eliminating plate.