JPH0738395Y2 - Prefabricated concrete retaining wall - Google Patents

Description

[Detailed description of the device] (Name of device) This device is used for the construction of a residential land around a residential land with a step, a boundary between a road and a residential land with a step, etc. The present invention relates to the improvement of a retaining wall having an L-shaped cross section, which is used as a prefabricated concrete retaining member, and is intended to provide a prefabricated concrete retaining wall having a novel structure, which is particularly characterized in its appearance.

(Prior art) For the purpose of simplifying the construction work, construction of a site such as residential land development where there is a step on the ground and there is a step on the ground does not rely on a concrete retaining wall that was cast in the past. Almost all prefabricated concrete retaining walls with an L-shaped cross section have been connected to facilitate construction.

However, so far, the main point is only the simplification of the construction, and the fact is that no consideration is given to the appearance,
Although it has certainly become advantageous in terms of construction, in terms of finishing, the concrete surface was exposed as it was, and it was extremely dull in terms of aesthetics. Therefore, when it is necessary to consider aesthetics to some extent, paint the concrete surface,
Although it will be necessary to finish the surface with extra costs such as placing tiles separately, if these additional works are added, the aim aimed at simplifying the construction will not make sense, so after all it will be finished. It is often the case that the concrete surface is left without any construction.

Such a situation is a phenomenon of one-handed drop, while the recent town development is being carried out with an emphasis on the cityscape.
It is by no means desirable, and in order to improve these situations, the present invention succeeds in developing and putting into practical use a prefabricated concrete decorative retaining wall having a novel structure as described in detail below.

(Structure of the Invention) As can be clearly understood from the typical embodiment shown in the drawings, the prefabricated concrete decorative retaining wall of the present invention basically has the following structure.

That is, the decorative convex portion 3, the joint concave portion 4, and the joint 5 are formed symmetrically on both surfaces of the rising portion 2 of the retaining wall main body 1 so as to have an uneven appearance imitating block stacking or the like, and the rising portion 2 is formed. The through hole 6 is formed at the center in the width direction of the base plate and corresponding to the joint recess 4, while both sides of the horizontal leg portion 7 including both ends of the rising portion 2 in plan view are slightly narrowed toward the tip of the leg portion 7. It is a prefabricated concrete decorative retaining wall formed into a curved shape.

The rising portion 2 and the horizontal leg portion 7 of the retaining wall body 1 and the length of the retaining wall body 1 are formed to have appropriate dimensions according to the respective applications, and the retaining wall body 1 is horizontally continuous to form a retaining wall. When the retaining wall draws a curved line on the arrangement during the formation, the retaining wall main body 1 is provided as shown in the plan view of FIG. However, it must be formed in such a shape that both sides of the horizontal leg portion 7 including both ends of the rising portion 2 in the planar shape are slightly narrowed toward the tip of the leg portion 7, for example, a shape that is narrowed by about a = 5 °. I have to.

As can be seen from the perspective view of FIG. 1, the side view of FIG. 3, and the rear view of FIG. 4, the decorative protrusions 3 are formed on both the front surface side and the back surface side of the rising portion 2, and for example, Otani masonry, iron flat stone masonry, brick masonry, etc. are made to resemble the appearance of a wall formed by stacking blocks, and to be formed according to an appropriate design other than block masonry, If necessary, surface treatment such as chipping and painting can be applied. It should be noted that, in order to make this surface treatment advantageous, it is possible to freely use concrete as a mixture of makeup aggregate and a coloring agent in advance, if necessary.

The joint concave portion 4 is formed to three-dimensionally raise the decorative convex portion 3 and normally remains as the concrete surface, but this may also be appropriately subjected to a surface treatment such as a cosmetic finish if necessary. it can.

The joint 5 is formed in order to absorb and treat cracks that may occur on the surface of the rising portion 2 of the retaining wall body 1, and is formed in the joint recess 4 in the shape of a narrow groove.

The through hole 6 is necessary to pass a hanging metal fitting or a rope when the retaining wall body 1 is moved, and is shown in the plan view of FIG. 2 and the rear view of FIG. 4 in order to maintain the balance when hoisted. As described above, the rising portion 2 that is the center in the width direction of the retaining wall body 1 is formed in the joint concave portion 4 so as not to cause a disadvantage in appearance in terms of makeup finish. To do.

An example of the through hole 6 having a specific configuration will be described below in detail with reference to the drawings.

(Embodiment 1) As shown in a partially disassembled state in an enlarged sectional view of an essential part of FIG. 5, both ends 6a, 6a of a through hole 6 formed in the rising portion 2 are shown in a sectional shape. This is a prefabricated concrete decorative retaining wall that is formed with a taper that expands to the outside.

Since both ends 6a, 6a of the through hole 6 are formed with a taper, it is difficult for the lifting metal fitting to damage the both ends 6a, 6a of the through hole 6 when the retaining wall body 1 is lifted and moved. In addition to the above, the compatibility with the concrete plug 8 used in the second embodiment is advantageous.

(Embodiment 2) This embodiment is a further improvement of the embodiment of Embodiment 1 described above, in which both ends 6a, 6a of the through hole 6 formed in the rising portion 2 are tapered so as to spread outward in a sectional shape. On the other hand, as shown in the perspective view of FIG. 6, the concrete plug 8 is formed into a truncated cone shape matching the tapered through hole 6, and the surface of the through hole 6 is originally formed. This is a prefabricated concrete decorative retaining wall in which a part of the joint 5 that would otherwise have been formed is formed as the joint 8a.

In this embodiment, the pores 9 for draining water are formed in the center of the concrete plug 8, but the pores 9 are not always necessary and may be omitted in some cases. is there.

The surface of the concrete plug 8, and in the case where the joint 8a is formed as shown in the figure, the surface including the joint 8a is naturally formed to have the same finish as that of the joint recess 4 and the joint 5 of the retaining wall body 1. There must be.

(Advantageous Effects) Since the prefabricated concrete decorative retaining wall of the present invention having the above-described configuration is configured such that the decorative convex portions 3 are formed on both surfaces of the rising portion 2 of the retaining wall body 1 in advance, If it is adopted as it is at the boundary of a residential land development site with a step or on a new road, and if it is connected and constructed continuously, it will be possible to exert the design effect without finishing it as it is, and it will be extremely efficient In addition to the above, the two sides of the horizontal leg portion 7 including both ends of the rising portion 2 in a plan view are formed in a shape that is slightly narrowed in the distal direction of the leg portion 7, and thus the retaining wall that must be formed into a curved surface It can be used as it is, and it can be used as a versatile retaining wall material.

In addition, since the through holes 6 required for the grounding work are regulated and formed at the predetermined positions of the joint concave portion 4, there is no inconvenience in the finished appearance, and the design effect is very excellent. Become.

Particularly, as shown in the first embodiment, both ends 6a, 6 of the through hole 6 are
In the case where a is formed with a taper, damage during work is prevented, so that the finish is very beautiful and it is possible to further improve the design effect.

Further, in the one shown in the second embodiment in which the concrete plug 8 is fitted in the through hole 6, the through hole 6 can be made virtually inconspicuous in appearance, so that the design effect is further enhanced. It is possible to increase the product value.

As mentioned above, the prefabricated concrete decorative retaining wall of the present invention is very excellent in that it can realize aesthetic formation as it is when used in places with strong publicity, unlike prefabricated members of this type up to now. It has excellent characteristics and has an excellent structure that does not interfere with appearance formation even if a through hole, which is a necessary structure for a retaining wall member, is introduced, and a separate makeup finishing work is required. In addition to the advantage of not doing it, it is extremely excellent in terms of construction efficiency because it has the same workability as before. Therefore, even if a small amount of cost is required for forming the decorative convex surface in the manufacturing process, the cost can be sufficiently reduced in terms of workability, and the economical retaining wall member can be obtained as a whole.

[Brief description of drawings]

The drawings are based on an embodiment representative of the present invention. FIG. 1 is an overall perspective view thereof, and FIG. 2 is a plan view thereof.
FIG. 3 is the same side view, FIG. 4 is the same rear view, and FIG.
FIG. 6 is an enlarged perspective view showing only the concrete plug. 1 ... Retaining wall main body, 2 ... Same rising part, 3 ... Same decorative convex part, 4 ...
Same joint recess, 5 ... Same joint, 6 ... Same through hole, 7 ... Horizontal leg,
8 ... Concrete plug, 9 ... Same pore.

Claims (3)

[Scope of utility model registration request] 1. A decorative convex portion, a joint concave portion, and a joint are formed symmetrically on both sides of a rising portion of a retaining wall main body having an L-shaped cross section so as to reveal an irregular appearance similar to a block stacking or the like, and the rising portion is also formed. A through hole is formed at the center in the width direction and corresponding to the joint recess, and both sides of the horizontal leg including the both ends of the rising portion in the plan view are slightly narrowed toward the tip of the leg. A prefabricated concrete decorative retaining wall formed on. 2. The precast concrete decorative retaining wall according to claim 1, wherein both ends of the through hole formed in the rising portion are formed in a tapered shape that spreads outward in cross section. 3. The through hole formed at the rising portion has both ends formed in a tapered shape with a cross-sectional shape expanding outward,
A concrete plug is fitted into the through hole, and the concrete plug is formed into a truncated cone shape matching the tapered through hole, and the surface is formed without the through hole. The ready-made concrete retaining wall according to claim 1 or 2, wherein a part of the joint that will be formed is formed as the joint of the plug.