JPS60258329A - Top block - Google Patents

Abstract

PURPOSE:To provide top blocks having their respective stay bases which may be vertically lined up, by a method wherein a stay, formed in a pantagon in cross section, is projectedly formed closer to the one oblique side of the back of a block body having a front formed in a pentagon. CONSTITUTION:A stay 2, having a shape in cross section about similar to the reduced shape of the front of a block body 1, is projectedly formed closer to the oblique side of the back of a top block body 1 having a front formed in a pentagon, and an oblique part 2' of the stay 2 is expanded downward to form a stay base 3. When the top blocks A are aligned at the uppermost stage of a retaining wall, the stay bases 3 of the top blocks A and the stay bases of the ordinary blocks at a lower stage adjacent to the uppermost stage are vertically lined up to form a self-support stable structure, resulting in the possibility to increase strength of the top part.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (a) Industrial Field of Application and Problems to be Solved by the Invention The present invention provides a method for constructing a concrete retaining wall using a large number of concrete stacked blocks. Regarding the top block to be installed.

b. Prior art] When constructing a retaining wall by so-called volume stacking of concrete blocks, so-called four-way stacking, in which the four corners of each concrete block are butted together, is considered to be defective stacking (cited reference: Civil Engineering (Left column, page 1607, Published by Gihodo, Vol. 1, Vol. 1, left column)) However, there is no such thing as a self-supporting and stable structure in which concrete blocks are piled up with their butt ends connected vertically.

Structure of the Invention (a) Means for Solving the Problem The front face of the block body is made into a pentagon that is a combination of an oblong rectangle and an isosceles triangle, and grooves are provided on the upper surface of each oblique side, and grooves are provided on the back side of the block body near the oblique side. The crown concrete according to the present invention has a protruding retainer whose cross section is substantially similar to that of the front face of the block main body, and further bulges the slopes of the retainer in parallel directions to form retainer ends. 4-) A self-supporting and stable structure can be achieved by arranging the blocks in a row at the top of the retaining wall and supporting the butt end of the top concrete block with the butt end provided on the concrete blocks stacked at the lower tier. The purpose is to construct a valley retaining wall that avoids this.

b. Effects and Examples The effects and Examples of the present invention will be explained based on FIGS. 1 to 13.

Fig. 1 to Fig. 8 show an embodiment of the top concrete block A according to the present invention, and the front of the block body (1) is shown as follows.
A pentagon is formed by combining a horizontally long rectangle and an isosceles triangle, and a concave groove is provided on the upper surface of the oblique side of the pentagon.
Retainer (2) that is almost similar in shape to 1) by reducing its front shape.
, and further bulges out the slope portions of the retaining t21 in parallel directions to form the retaining ends (3). Figure 7 shows another top concrete block A.
' is shown, and the vertical side of the block body +11 is the first
Fig. 9 shows an example of the standard type crown cock A", in which the vertical sides of the block body +1) are formed low and the retaining wall height is adjusted low. Fig. 9 shows a crown concrete block according to the present invention. This is a front view showing the block A placed in a row at the top of the retaining wall.The block main body is a horizontally long rectangle with protrusions and grooves on the side end faces, and a triangular retaining end (with corners missing on the back surface). 4) The desired number of tiers of concrete blocks B with protrusions are stacked, and the large-end concrete blocks are placed in a row on the top tier. The protrusions provided on the side end faces of block B and the concave grooves of the top concrete block A are fitted together, and the butt ends (3) of the top concrete block A are fitted to the butt ends (4) of the concrete stacking block B. A retaining wall is constructed by stacking the masonry vertically to form a self-supporting stable structure. Figures 11 and 11 are cross-sectional views showing the state in which the retaining wall has been constructed. is fitted with the concave and convex ridges of the conocrete stacking block B, and the buttock (3)
) and (4) are stacked one above the other to form a self-supporting and stable structure. As shown in Figures 9 and 10, at the bottom of the retaining wall, a concrete pile block B is attached to the butt end (5) of the root concrete block C, which has the shape of the block body + 1) reversed by 180 degrees. Ukejiri (
4) were stacked vertically and the side end surfaces of the block bodies were fitted with concave and convex parts, and the block bodies (1) of the top concrete blocks A'' were tilted at (A) degrees on both sides of the retaining wall. A side concrete block D of the form is interposed between the root concrete block C and the concrete stacking block B, or between the concrete stacking block B and the top concrete block A, and is also installed at the corner of the retaining wall. When a corner concrete block E is laid down, and a root concrete block C- and a side concrete block D are laid down, or a side concrete block D is
When the top concrete block Ai is laid, a gap is created at the lower corner' or the upper corner of the retaining wall, so correction concrete blocks F, F/ are laid to fill the gap. At this time, the butt ends of the concrete blocks are connected vertically to form a self-supporting and stable structure.

Effects of the invention It has an independent and stable structure in which the butt end (4) of the concrete stacking block B and the butt end (3) of the top concrete block are connected vertically, and the ridges and grooves of the concrete stacking block B (Since the retaining wall (1γ) is a concave and convex fit, it is possible to build a solid retaining wall.The retaining wall (3) is still similar in shape to the retaining retainer (2) by enlarging its cross section, so the monthly fill material is the retaining wall (2). )
It wraps around the periphery of the retaining wall and is filled vertically and continuously behind the retaining wall to firmly reinforce almost the entire rear surface of the retaining wall. Also, the retainer (which is thinner than the block body TL)
2) It is convenient for transportation and installation when it is gripped, and there is no risk of pinching or injuring fingers; it can be stacked compactly and neatly, and it is safe and does not collapse during transportation or storage, and it also saves stock space. is not needed extra.

As described above, the present invention is a useful invention that has a robust structure, is easy to manufacture, has good workability, and is inexpensive.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a rear view of the same, Fig. 3 is a right side view of the same, Fig. 4 is a plan view of the same, and Fig. 5 is an A-A in Fig. 4. 6 is a sectional view taken along line B-B in FIG. 3, FIGS. 7 and 8 are front views showing other embodiments, and FIG. 9 is a sectional view taken along line B-C in FIG. FIG. 13 is a sectional view showing a state in which two crown concrete blocks according to the present invention are stacked. (+)...Block body (edge...concave groove (2)...back (3)...back end Patent applicant Grass, bamboo, cedar [phase]

Claims (1)

[Claims] The front face of the block body is a pentagon that is a combination of an oblong rectangle and an isosceles triangle, and −゛ ° The cross section near the hypotenuse of the back face of the block body is approximately similar to the shape of the front face of the block body. A top block that has a protruding retainer that forms a shape, and further bulges out the sloped portions of the retainer in parallel directions to form a retainer butt.