JP2723789B2 - Concrete block and its laying method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block such as a retaining wall block, a waterway block, and a box culvert, and a method of laying the concrete block.

[0002]

2. Description of the Related Art In order to lay a precast concrete block such as an L-shaped retaining wall block or a U-shaped block, it is necessary to level the ground to be laid, temporarily place the concrete block, and adjust the gradient and level. field stones and, the real No.
Using various blocks of wedges such as seen in JP 2-109884 as a kettle was was formed a suitable installation surface, keep in lifting concrete blocks, the ready-mixed concrete to that adjusted installation surface Da設Then, put the concrete block again and if it is normal, if it is not good,
A laborious construction method is used in which the concrete block is suspended again, lifted a little, fixed below, and finished installation. As the individual concrete blocks become larger, as is the case recently, such methods are particularly inefficient and dangerous.

[0003] In order to solve the difficulty in level adjustment,
Examples in which an adjustment bolt is provided on the bottom slab of a concrete block so that the height can be adjusted can be seen in Japanese Patent Publication No. Sho 62-48018, Japanese Utility Model No. 2-45347, Japanese Utility Model No. 4-23939, and the like. Although these have facilitated the level adjustment during construction, the adhesion between the bottom slab and the base after solidification of the concrete is not enough, and there are problems in terms of strength and durability, such as the formation of voids between the bottom slab and the base. There is. In the case of a concrete pouring hole for pouring concrete between the bottom slab and the foundation after the concrete block is installed (for example, Japanese Utility Model No. 4-23939), a mortar such as mortar with low ballistic content and low viscosity is easy to fill. It is only possible to pour the material, and it is almost impossible to cast fresh concrete containing a large amount of gravel. In particular, it is difficult to spread the fresh concrete to every corner of the space where the space between the bottom slab of the concrete block and the foundation is only about 2 to 3 cm apart, and the gap cannot be eliminated.

[0004]

SUMMARY OF THE INVENTION The present invention, of course, allows easy level adjustment, but also provides a structure in which ready-concrete concrete can be filled between the bottom slab and the foundation when the concrete block is installed, and a method of laying the concrete. Was considered. Furthermore,
The purpose is to provide sufficient adhesive strength and durability after construction. Also concrete blocks
The safety at the time of installation was also examined.

[0005]

Concrete blocks of the present invention SUMMARY OF THE INVENTION may, retaining wall blocks, waterways blocks, provided concrete設穴3 that open mouth to the bottom plate 1 of the block, such as box culverts, the concrete設穴3 Is bottom version reinforcement 4
In the blocks where the anchor bars 6 from the exposed or foundation can be inserted and integrated with the cast concrete ,
The concrete casting hole 3 is located almost from the middle of the bottom plate 1 in the thickness direction.
The slope part 5a which goes to the outer edge as it goes to the upper surface 1a
And goes from the middle in the thickness direction of the bottom plate 1 to the bottom surface 1b.
It is noted that a slope 5b is
Sign.

[0006] The concrete casting hole 3 is a hole largely opened to the vicinity of the four edges of the bottom slab, or a plurality of slit-like holes, rectangular holes, etc., from the vicinity of one edge to the vicinity of the other edge of the bottom slab. .

Further, a bottom slab 1 of the concrete block is provided.
Increase the adhesive strength on the bottom and do not immerse in the foundation concrete
Protects your hands from being stuffed when accidentally dropped during construction
The rebar 14 protruding in a U-shape which is provided in a dispersed plurality of locations.

In the laying method of the present invention, one of the above concrete blocks is used, and this block is provided on the bottom surface of a base concrete slab 10 or the like which has been installed in advance on the bottom surface.
A level is set with just bolts and installed, and ready-mixed concrete is poured from the concrete placing hole 3 between the bottom slab 1 and the ground and into the concrete placing hole 3 together with the bottom plate reinforcing bars 4 or the anchor bars 6 protruding from the foundation. It is characterized by being fixed to form a bottom plate and being integrated with a foundation.

[0009]

In the concrete block of the present invention, the concrete pouring hole 3 opened to the vicinity of the edge 2 of the bottom slab allows not only the mortar, but also the filling of the fresh concrete to every corner, and the reinforcement 4 or from the foundation. The concrete in the concrete casting hole 3 is solidified and integrated together with the anchor bars 6. As a result, the solidified concrete functions as a bottom slab, and the foundation and the reinforcing bars 4 or the anchor bars 6 from the foundation and the concrete block are firmly fixed.

At the time of manufacture, the molding die is removed from the slope 5a on the upper surface 1a.
After solidification of concrete, the slope 5a of this upper surface 1a
The presence increases the integration strength with the base. That is,
When the slope part 5a is formed in the concrete casting hole 3,
Increased fixing strength of block by integrating concrete
After the cast concrete has solidified, it forms the same surface as the bottom slab.
Despite the fact that the top is wide,
Pulling up is impossible. Also cast concrete
Filling into the hole 3 becomes easy. The concrete filling rod vibrator 11 and the like are obliquely inserted by the sloped portion 5b toward the outer edge as it goes to the bottom surface 1b of the concrete casting hole 3, so that ready-mixed concrete enters between the bottom slab of the concrete block and the groundwork. It is completely cast into every corner .

Bottom plate 1 of concrete block
The reinforcement of concrete increases the strength of the concrete
And stuffed hands etc. when it fell accidentally during construction
To protect against According to the construction method of the present invention , fine adjustment can be performed simply by turning the precast concrete block on the underground such as the pre-installed foundation concrete slab 10.
The blocks are laid out by simple construction by simply leveling the concrete with the adjusting bolts and placing the ready-mixed concrete from the concrete casting hole 3 between the bottom slab 1 and the foundation concrete slab 10 and into the concrete casting hole 3. It is fixed to the substrate together with 4 or anchor streaks 6.

[0012]

FIG. 1 is a perspective view of a first embodiment of the present invention, in which the present invention is applied to an L-shaped retaining wall block. FIG.
Is a partially omitted longitudinal sectional view of a main part. The side plate 7 of the L-shaped retaining wall block has a normal structure that stands substantially perpendicular to the bottom plate 1. The bottom slab 1 is characteristic, and has a concrete casting hole 3 which is largely open to the vicinity of the edge 2 of the bottom slab. In addition, reinforcing bars 4 are present in the concrete casting hole 3 vertically and horizontally. The arrangement of the bars is such that the rod vibrator 11 for filling concrete can enter.

The details of the concrete casting hole 3 can be seen in FIG. 2, but the reinforcing bar 4 is located substantially at the center of the bottom plate 1 in the thickness direction, and the upper part is the upper surface 1a and the lower part is the lower surface 1b.
, The slope portions 5a and 5b approaching the outer edge. Since the inclined portion 5b is provided below, the rod vibrator 11 for filling concrete can be inserted not only vertically but also obliquely, so that work is easy and complete filling can be performed.
In addition, since there are the inclined portions 5a and 5b, it is easy to manufacture the mold and to remove the mold during molding.

FIGS. 3 and 4 are perspective views of the second and third embodiments of the present invention. In these examples, a plurality of rectangular concrete casting holes 3 are provided in the bottom slab 1. The former is an example of a U-shaped block, and the latter is an example of an L-shaped retaining wall block. In each case, the concrete casting holes 3 are a plurality of holes extending from the vicinity of one edge of the bottom slab 1 to the vicinity of the other edge. These concrete pouring holes 3 have inclined portions 5a and 5b which are directed to the outer edge as the upper portion 1a extends from substantially the middle in the thickness direction of the bottom plate 1 and the lower portion approaches the bottom surface 1b. I have.
A plurality of anchor streaks 6 from the foundation have entered the concrete casting hole 3. Anchor bar 6 is shown in FIG.
In the example of FIG. 4, the shape is a U-shape, and in the example of FIG. All the projecting bars are integrated by solidification of the concrete cast in the concrete casting hole 3.

FIG. 5 is a sectional view showing a fourth embodiment of the present invention, which is an example of a box culvert. Also in this example, a concrete casting hole 3 opened to the vicinity of the edge 2 of the bottom slab is provided in the bottom slab 1 of the box culvert. The bottom slab 1 has a sloped portion 5b which is directed toward the outer edge as the lower portion of the bottom plate 1 goes from the middle to the bottom surface 1b.

An example of the method of laying a precast concrete block as shown in the above embodiment will be described with reference to FIG. 2. First, a foundation is prepared, and a foundation concrete slab 10 is placed thereon. Such a foundation concrete slab 10
The concrete block of the present invention is leveled and installed on the ground below. Leveling the have the most good is adjusting bolt 12 provided on the bottom surface of the bottom plate 1 as shown in FIG. U-shaped reinforcing bars 13 and 14 respectively provided on the bottom plate 1 of the concrete blocks of the present invention the foundation concrete panel 10 protrudes in the vertical direction, and to enhance the bonding strength of the concrete,
It serves to protect hands and other objects from being squeezed when accidentally dropped during construction. When the level adjustment is completed, the bottom slab 1 and the foundation slab 10
Fresh concrete is poured into the space and into the concrete placing hole 3 and fixed together with the reinforcing bars 4 or the anchor bars 6.

[0017]

According to the present invention, the installation of various concrete blocks is simplified and labor-saving, and even though the ready-mixed concrete is filled after the concrete block is installed, the ready-mixed concrete is placed between the concrete block and the foundation. It became possible to fill up variously, and the effect of improving adhesive strength and durability was obtained. Also, work is done safely
It became a thing.

[Brief description of the drawings]

FIG. 1 is a perspective view of an L-shaped retaining wall concrete block according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the concrete block.

FIG. 3 is a perspective view of a U-shaped concrete block according to a second embodiment of the present invention.

FIG. 4 is a perspective view of an L-shaped retaining wall concrete block according to a third embodiment of the present invention.

FIG. 5 is a sectional view of a box culvert according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom slab 2 Edge of bottom slab 3 Concrete pouring hole 4 Arrangement of reinforcement 5a Inclined section 5b Inclined section 6 Anchor reinforcement 7 Side slab 10 Basic concrete slab 11 Concrete filling bar vibrator 12 Adjustment bolt 13 U-shaped rebar 14 U-shaped Rebar

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ritsuko Masuda 209, Suehirocho, Yonago City, Tottori Prefecture (72) Inventor Norio Uemura 376-5, Mizobe-cho, Matsuyama-shi, Ehime Prefecture Osaka Mansion 304 (72) Inventor Yabuki Ryuji 630-1, Kaida, Ochiai-machi, Maniwa-gun, Okayama Prefecture Inside Landes Corporation (72) Inventor Noriyuki Mika 630-1, Kaida, Odaiai-machi, Maniwa-gun, Okayama Prefecture Landes Corporation (56) References JP-A-3-8927 (JP, A) JP-A-4-118423 (JP, A)

Claims (3)

(57) [Claims] 1. A concrete casting hole 3 opened in a bottom slab 1 of a concrete block such as a retaining wall block, a waterway block, a box culvert or the like. In the block in which the anchor bar 6 can be inserted and integrated with the concrete to be cast, the concrete casting hole 3 forms a sloped portion 5a heading from the middle in the thickness direction of the bottom slab 1 to the upper edge 1a toward the outer edge portion. And a concrete block provided with a sloped portion 5b which is directed toward the outer edge portion from substantially the middle in the thickness direction of the bottom plate 1 toward the bottom surface 16. 2. The concrete block is in contact with the bottom surface of the bottom plate 1 of the concrete block.
Construction without increasing immersion in foundation concrete
The concrete block according to claim 1, wherein a plurality of U-shaped projecting reinforcing bars (14 ) are provided at a plurality of locations to protect hands or the like from being packed when the product falls accidentally . 3. Using one of the concrete blocks according to claim 1 or 2, leveling the block with an adjusting bolt provided on a bottom surface of a pre-installed base concrete slab, such as a base concrete plate, and setting the block. and embedded anchors 6 which projects between the bottom plate 1 and the concrete foundation plate 10 from claim 1 concrete設穴3 according and concrete設穴3 of fresh concrete from the bottom plate reinforcement 4 or foundation to Da設A method of laying a concrete block that forms the bottom slab and integrates with the foundation.