JPH0431306Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a building block body, and more specifically, it is suitable for building waterfront structures such as jetties and breakwaters having upright walls. This relates to block bodies used in

[Prior art and its problems]

Conventionally, caisson-type structures in which upright walls are formed of caissons have been widely used as a means of constructing waterfront structures such as jetties and breakwaters.

By the way, this type of caisson-shaped structure has excellent wave resistance and has the advantage of being able to adjust construction costs by selecting the filling material, but on the other hand, because it is composed of upright walls, it reflects waves as they are. I did it,
Not only can wave-dissipating performance not be expected, but when aquaculture facilities for aquatic resources are set up in ports, as has been the case recently, there are problems such as deterioration of aquaculture conditions due to insufficient communication with seawater to keep the open sea clean. It had

[Means for solving problems]

Therefore, in this invention, a base main body is formed by connecting symmetrically provided approximately semi-cylindrical waterfront parts via a recessed picture wall, and the base body is formed on this base main body with the same width and the same width as that of the picture wall. A large base having a notch of a predetermined shape formed at a position corresponding to the joining part is provided, an engaging protrusion or an engaging recess is provided at the bottom of the base body, and the engaging protrusion is provided on the large base. By configuring such a waterfront structure by stacking and arranging blocks each having an engaging recess or an engaging protrusion that fits into an engaging recess or an engaging recess, it is possible to improve wave-dissipating performance and promote the flow of seawater. The aim is to make it possible to achieve this goal.

In this case, it is preferable that the same upper edge of the base body of the block body and the peripheral edge of the large base are connected to each other via an inclined part, since this can enhance the attenuation effect in the depth direction of waves.

〔Example〕

Next, preferred embodiments of the construction block body according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, a block body 10 according to the present invention includes a base body 12 made of concrete and a large base 1 connected to the upper part of the base body 12.
It basically consists of 4.

That is, the base main body 12 has substantially semi-cylindrical water edge portions 16a, 16b arranged opposite each other, and these water edge portions 16a, 16b are formed into symmetrical recessed portions 17, 16b.
The wall 18 and the water edge portions 16a, 16b are connected to each other at the bottom.
An engaging convex portion 20 is formed that extends over a portion of.

On the other hand, the large base 14 is connected to the base body 12 via the inclined portion 22, and its maximum width is set to be the same width as the base body 12. Moreover, this large base 14 has cutout parts 28, 28 formed of an arcuate part 24 and a straight edge part 26 symmetrically provided at positions substantially corresponding to the recessed parts 17, 17 of the base main body 12. A fitting recess 30 is provided at a position corresponding to the engagement protrusion 20 on the upper surface thereof and is dimensioned to fit with the engagement protrusion 20 .

When constructing a waterfront structure, for example, a jetty A, using the construction block body according to the present invention constructed as described above, first, the bottom slab blocks B are laid out, and one of the waterfront portions 16a of the block body 10 is laid out. The engaging protrusion 20 of the base body 12 is fitted into the recess formed in the bottom block B so as to face the direction of wave propagation to form a first stage.

Next, the engaging protrusions 20 of the next stage block body 10 are fitted into the fitting recesses 30 of these block bodies 10 to form a second stage. At this time, the second stage block body 10 In the first stage, the two adjacent blocks are stacked so that they straddle each other (see Figure 4), and in the third and subsequent stages, the blocks are stacked in the same way so that they straddle the two adjacent blocks in the lower stage. The structure is constructed by stacking the blocks one after another so that the blocks are stacked one after the other, and then placing the superstructure C on top of the top block (see Figures 4 to 7). It enters the chamber 32 formed by the wall 18 and the wall 18 of the adjacent block body 10 along the semicircular water edge 16a of each block body 10 formed in a staggered manner, and The wave water that has entered inside flows in a swirling manner due to the frictional resistance with the curved surfaces of the picture walls 18, 18, and its energy is effectively attenuated and flows along the water edge portion 16b on the rear side. In addition,
During the swirling flow in the chamber 32, the through hole 34 formed by the notches 28, 28 of the adjacent block body 10
A swirling flow also occurs in the depth direction through the through holes 34 formed by the respective notches 28, 28 of the lower block body at the substantially central bottom of each of the partition walls 18, 18, and these synergistic effects occur. The wave is rapidly attenuated and dissipated by the wave (see Figures 8a and 8b).

〔effect〕

As mentioned above, the block body according to the present invention has approximately semi-cylindrical water edge portions symmetrically provided, so that the block itself can have a wave-dissipating effect on wave water coming from two directions. When a waterfront structure is constructed by combining this with wave performance, it is possible to promote the flow of seawater between the seawater in the port and the seawater in the open sea, and to appropriately purify the inside of the port. Due to the frictional resistance of the wave water as it flows, the energy of the wave water is lost as much as possible and effective wave dissipation can be achieved.

In addition, it can be suitably configured as a berth facility for small vessels with a relatively narrow width.Furthermore, when used to form a breakwater, etc., it reduces the flow velocity at the opening during tides and improves vessel operation. It has various advantages such as being able to ensure safety, and its practical effects are extremely large.

Although the preferred embodiment of the structural block body according to the present invention has been described above, the present invention is not limited to this embodiment. Enlarging the overall width dimension, simply forming the notch in a curved shape,
Alternatively, a fitting concave portion may be formed at the bottom of the base body, and an engaging convex portion that engages with the fitting concave portion may be formed on the top of the large base, and furthermore, a waterfront structure formed using this block body may also be formed using the same method. It goes without saying that various modifications can be made without departing from the spirit of the present invention, such as adjusting the stacking format as necessary.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a preferred embodiment of the construction block body according to the present invention, Fig. 2 is a plan view of the block body shown in Fig. 1, and Fig. 3 is a bottom view of the block body shown in Fig. 1. Figure 4 is a front view of the jetty constructed by laminating the block bodies shown in Figure 1, and Figure 5 is a front view of the jetty constructed by laminating the blocks shown in Figure 1.
6 is a plan view of FIG. 4, FIG. 7 is a perspective view of the main part of FIG. 4, and FIGS. be. 10...Block body, 12...Base body, 14
...Large base, 16...Water edge, 18...Painting wall,
20... Engaging convex portion, 22... Inclined portion, 24... Arc-shaped portion, 26... Straight edge portion, 28... Notch portion, 30...
...Fitting recess, 32...chamber, 34...through hole.

Claims (1)

[Claims for Utility Model Registration] (1) A base body is formed by connecting symmetrically provided approximately semi-cylindrical waterfront parts via a recessed picture wall, and and a large base having a notch of a predetermined shape formed in a position corresponding to the recess of the picture wall, an engaging protrusion or an engaging recess provided at the bottom of the base main body, and further A block body for constructing a waterfront structure, characterized in that an engagement recess or an engagement protrusion that fits into the engagement protrusion or engagement recess is provided on a base. (2) A block body for constructing a waterfront structure according to claim 1, which is a utility model registration claim, which comprises connecting the same upper edge of the base body and the peripheral edge of the large base via an inclined part.