JPH047225Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a block for foot protection of breakwaters, sea walls, caissons, embankments, etc.

Conventional technology Generally, when constructing breakwaters, seawalls, caissons, embankments, etc., the foundations of these structures are taken over from the tidal water flow.
Foundation blocks are used to solidify the foundation. Conventionally, blocks such as those shown in FIGS. 10 and 11 have been used as this foot hardening block. Both figures show plan views of, for example, four blocks laid down, and the block 1 in FIG. are placed in surface contact with each other to ensure mutual cooperation. Further, the block 3 in FIG. 11 has protrusions 4 projecting in four directions in a substantially cross shape, and these protrusions 4 can intertwine between the protrusions 4 of adjacent other blocks to achieve mutual cooperation. I'm trying to make it possible. These foot protection blocks are laid on top of the foundation stones that form the foundation of embankments, etc., to prevent them from being washed away by tidal currents, etc., and serve to hold down the foundation stones and dissipate waves.

Problems to be solved by the invention However, according to the above-mentioned conventional foot-hardening blocks, the blocks 1 are laid simply by colliding with each other to achieve mutual cooperation. The outer edges, especially the corners, have few contact surfaces and have poor coordination with other blocks, so flow due to tidal water currents is likely to occur in these areas.
There is a drawback that the root hardening block as a whole tends to collapse. Further, in the block 3, each protrusion 4 enters and engages between the protrusions 4 of adjacent other blocks, creating an intricate shape. Similarly, the outermost ends of the foot protection blocks and especially those at the corners are more likely to disengage. Furthermore, when laying blocks as shown in FIGS. 10 and 11, the rows tend to collapse as a group along the row direction X--X or the column direction Y--Y, respectively. In this way, in either Block 1 or 3, if the mutual cooperation between the blocks breaks down even in one place, the foot protection block will partially collapse and flow due to the energy of the tide or waves, and the foot protection block will not function as a foot protection block. There is a problem that the effect is no longer achieved. Floating and collapsing of the foot protection blocks causes enormous losses in the construction of revetments or embankments, which require a huge amount of construction cost.Therefore, it is a serious problem that needs to be solved immediately. As is well known.

Means for Solving the Problems The present invention aims to solve the above problems, and includes a base made of a rectangular parallelepiped with hook-shaped protrusions formed at both ends, and a left and right side of the base in a direction perpendicular to the base. A pair of cube-shaped overhangs that are formed to protrude from each side with a predetermined interval, a pyramid-shaped leg that is formed to protrude below the overhang, and one of the left and right sides of the overhang. a hook-shaped protrusion formed at the distal end of the block, each of the protrusions being arranged point-symmetrically at the center of the base and capable of engaging the protrusions of other blocks connected thereto; The present invention provides a foot protection block characterized in that the base part can engage the legs of other blocks that protrude upwardly from the projections and the overhanging parts and accumulate.

Effects According to the above structure of the present invention, the planar shape is basically a skewer shape, and by interweaving a plurality of blocks with both ends of the base fitting between the protruding parts of the other blocks, The protrusions mesh with each other to form strong connections in the row and column directions in which the blocks are aligned, so that the blocks do not collapse as a single unit or as a group in rows or columns.
Maintaining the integrity of the root hardening block as a whole,
It does not interfere with its function.

Furthermore, when a plurality of blocks are accumulated, the vertical connectivity can be improved by sandwiching the legs of the upper block between the bases of the lower block.

Embodiments The present invention will be described below based on illustrated embodiments.

FIG. 1 is an overall perspective view of a foot protection block according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a bottom view thereof, and FIG. 4 is a sectional view taken along line A-A in FIG.

In the figure, reference numeral 10 indicates a rectangular parallelepiped base, and reference numeral 11 indicates a projecting portion extending parallel to both sides of the base 10, and there are a total of four projecting portions. Gap 12 between overhangs 11
is equal to or slightly larger than the width of the base portion 10, and the width W and length L between the projecting portions 11 are approximately equal. A hook-shaped protrusion 13 is integrally formed at both ends of the base 10 at a point symmetrical position, and a similar protrusion 14 is formed at one end at a point symmetrical position on the opposing side surface of the overhanging part 11. They are each integrally formed. The protrusions 13 and 14 are provided to protrude in the same direction of rotation. 15 is the base 10
This is a projecting body that is integrally formed to protrude over the length range between the projecting portions 11 at the top. Reference numeral 16 denotes a leg portion integrally formed below the projecting portion 11, and is approximately in the shape of an inverted trapezoid. The width W1 of the gap 17 between the legs 16 is equal to or slightly larger than the width W2 of the protrusion 15, and prevents the legs 16 from moving when the blocks are stacked upward. Therefore, to discuss the mutual linkage of the foot protection blocks, that is, how to assemble them, as shown in FIG. The protrusions 13 and 14 are arranged so as to mesh with each other. That is, if one block M is fixed in the horizontal position, the second block N adjacent to it in the same row direction X-X line is fixed in the vertical position, and the third block N adjacent in the column direction Y-Y line is fixed in the vertical position. Fix P in vertical position. Four blocks O, which are diagonally adjacent to block M, are fixed horizontally. In this way, adjacent blocks are not fixed in the same form in either the row direction X-X or the column direction Y-Y, but are fixed in the same form only in the adjacent diagonal direction. Therefore, each protrusion 13 of each block M, N, O, P meshes with each protrusion 14, and engages with other blocks in both the row direction X-X line and the column direction Y-Y line. In addition, since the block O corresponding to the corner of the entire foot protection block engages with the blocks N and P, there is no fear that the blocks will collapse independently and sequentially flow out from the corner. In addition, in order to combine each block M, N, O, P, hang each block with a crane and attach the protrusions 13, 1.
Do this while descending in the vertical direction so that 4 can engage. FIGS. 6 and 7 show examples in which blocks according to the present invention are accumulated upward in a two-dimensional and three-dimensional manner. In this case, the legs of the blocks to be accumulated are placed so as to sandwich the protrusions of the lower blocks, and are perpendicular to the lower blocks.

Figure 8 shows the caisson 18 fixed on the foundation 19,
In addition, a layer 20 of the foot hardening blocks is placed on the foundation 19.
The foundation 19 is covered with foot protection blocks to prevent it from being washed away or collapsed by the tide. When such a foundation 19 is laid with the foot protection blocks, since the legs 16 are approximately trapezoidal, there is a large gap at the boundary between the flat foundation 21 and the sloped foundation 22, as shown in FIG. Can be linked without occurring.

Effects of the invention According to the invention described above, blocks each having a base portion having a hook-shaped protrusion and an overhanging portion are linked in the adjacent row direction and column direction by interlocking connections. Therefore, there is no risk of the blocks collapsing as a group along the rows or columns, and even if the blocks are located at corners, they will not collapse individually due to the interlocking connections in the rows and columns. In addition, since the legs are protruded from each of the overhangs, a space is formed between the legs, which can be used as a wave-dissipating block or a fish reef. By doing so, even if the floor to be laid is a composite floor consisting of a horizontal surface and an inclined surface, the connecting portions can be installed one after the other without being greatly separated, and the floor can be laid in a way that adapts to the undulations and curves of the floor to be laid. When the blocks according to the present invention are stacked, a protrusion is provided on the upper surface of the base that is sandwiched between the legs to prevent the legs from slipping, so that the blocks can be engaged not only in the planar direction but also in the vertical direction. It is strong and can fully function as a root protection block or a wave dissipating block.

Moreover, since all the hook-shaped protrusions are arranged point-symmetrically at the center of the base, the interlocking configuration of the blocks can be simplified, and the efficiency of the laying work can therefore be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective overall view of the foot protection block according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a bottom view thereof, Fig. 4 is a sectional view taken along line A-A in Fig. 2, and Fig. 5 is a A plan view of the part to be laid, Figures 6 and 7 are elevation views of the part to be laid, Figure 8 is a cross-sectional view showing an example of embankment construction, and Figure 9 is a cross-sectional view of the part to be laid.
The figure is a side view of the installation part, and FIGS. 10 and 11 are plan views of the installation part of the conventional example. 10...base, 11...projection, 13, 14...
... protrusion, 15... protrusion, 16... leg.

Claims (1)

[Scope of utility model registration request] a base made of a rectangular parallelepiped with hook-shaped protrusions formed at both ends; a pair of overhangs made of cubes protruding at a predetermined distance from each other on both sides of the base in a direction perpendicular to the base; It consists of a pyramid-shaped leg projecting downwardly from the overhang, and a hook-shaped protrusion formed at one end of each of the right and left sides of the overhang. They are all arranged symmetrically at the center and can engage the protrusions of other blocks that are connected to each other, and the base protrudes upwardly from the protrusions and overhangs to accumulate the legs of the other blocks. A root hardening block characterized in that it can be engaged with.