JPH07229155A - Concrete block and construction method of concrete block - Google Patents

Abstract

PURPOSE:To inject concrete with a right posture and surely fix a block body to a foundation part by supporting a supporting point protruding part vertically provided on a bottom plate center-of-gravity part on a support plate, and regulating the clearance of a downward expanded void. CONSTITUTION:Mutually adjacent block bodies 1 are constructed so that a downward expanded void formed between the side edges is slightly narrowed, and the block bodies 1 are bent by the narrowed portion and repeatedly juxtaposed one after another. Four posture holding bolts 10 are screwed to nuts 9 buried in the corner parts in this state, and the lower end is brought into contact onto a foundation part 3 to ensure a right posture. Concrete is packed to the clearance 12 between the foundation part 3 and the lower surface 7' of a bottom plate 7 through the downward expanded void part to fix the block body l onto the foundation part 3. The concrete also flows into a recessed groove 8 on the lower surface 7' of the bottom plate 7 communicating with the void part so that the block body 1 can not be slid the foundation part 3.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method of constructing a concrete block such as a retaining wall block, a drainage gutter block, a fence ditch block, a box culvert and a concrete block, which are used when making a retaining wall, a drainage gutter, a drainage tunnel and the like. It is related to.

[0002]

2. Description of the Related Art Conventionally, for example, when constructing a retaining wall block, the retaining wall block is lowered onto a foundation portion which is a foundation portion by a truck crane or the like, and the front and rear are aligned with a predetermined drawing line position so that they are adjacent to each other. The right and left side edges of the retaining wall plates are correctly abutted on top of each other, but since the foundation is not always flat, the front side of the upper retaining wall plate in which the right and left side edges of each retaining wall plate are correctly abutted It has been extremely difficult to arrange the light beams so that they are flush with each other or are bent at a predetermined angle.

Therefore, the retaining wall block is lifted by a truck crane or the like every time construction is performed, an intervening material is interposed between the foundation and the base plate, and the side edges are correctly butted against each other and the front surface of the retaining wall plate is flush. However, there was a drawback that it became a very troublesome work and the work efficiency was reduced.

[0004]

In order to solve such a drawback, the inventor has developed Japanese Patent Application Laid-Open No. 2-85222, which is a prior application, and swings a block body by a fulcrum protrusion without using a crane or the like. The block body can be easily set at a predetermined position by moving it or sliding it, and the correct posture can be maintained by adjusting the elevation of the posture holding bolt, and concrete is packed in the gap between the bottom plate and the foundation part to make the foundation. Proposal to fix the block body on the part, and then the actual test construction results showed that the concrete pouring was done by providing a triangular diverging space for pouring concrete between the butt bottom plates of the adjacent block bodies. It was confirmed that the block body can be easily curved, and that a strong groove can be installed and fixed by providing a groove on the bottom surface of the bottom plate.
The present invention has been completed.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

[0006] One or several fulcrum projections 2 are provided downwardly on the lower surface 7'of the bottom plate 7 of the block body 1 at or near the center of gravity, and a nut 9 embedded in a corner of the bottom plate 7 is used to hold an attitude holding bolt. 10 is screwed and the lower end of the posture holding bolt 10 is projected from the lower surface 7'of the bottom plate 7 so as to be vertically adjustable. The rear width of the bottom plate 7 is slightly narrower than the front width of the adjacent concrete blocks. A divergent void 6 that doubles as a concrete injection part and a control part that slightly bends the front side construction line between the bottom plates 7 and 7.
And a groove 8 which forms a groove and communicates with the divergent void 6
The present invention relates to a concrete block characterized in that the bottom surface 7 ′ of the bottom plate 7 is recessed.

Further, the present invention relates to the concrete block according to claim 1, wherein a peep hole 11 for confirming the injection degree of the concrete milk or the cement milk 16 is provided in the vicinity of the central portion of the bottom plate 7.

The concrete block according to claim 1, characterized in that a concrete pouring notch (14) is provided at a side edge (7 ") of the bottom plate (7) of the left and right block bodies (1) forming the divergent voids (6). It is related.

A bearing plate 5 having a sliding surface is provided on the upper surface of the base portion 3, and a fulcrum protrusion 2 is provided on the bearing plate 5 and projects downward near the center of gravity of the bottom plate 7 of the block body 1. The bottom plate 7 of the block bodies 1 and 1 connected to the left and right is held by bringing the lower ends into contact with each other and holding the block body 1 in the correct posture by adjusting the installation with the posture holding bolts 10 suspended from the ends of the block body 1.・ The block body 1 is laid straight and curved by adjusting the degree of narrowness of the divergent space 6 provided between the blocks 7.
Moreover, concrete milk or cement milk 16 is filled into the gap 12 between the bottom plate 7 and the base portion 3 from the divergent space 6, and it is confirmed that the filling is completed from the peep hole 11 formed in the bottom plate 7. The present invention relates to a concrete construction method characterized in that the block body 1 is fixed to the foundation portion 3.

[0010]

The operation of the retaining wall block will be described. The front and rear positions of the block body 1 are predetermined so that the left and right end portions 4'of the retaining wall plate 4 can be correctly abutted on the foundation portion 3 by a truck crane or the like. Suspend according to the position.

At this time, when the block body 1 is slightly displaced from the predetermined position, the block body 1 is slightly raised above the base portion 3 with the fulcrum protrusion 2 provided on the lower surface 7'of the bottom plate 7 as a fulcrum. And, since it is placed on the support plate 5 whose surface is formed as a sliding surface, the lower surface 7'of the bottom plate 7 is shaken or slid more than when it is placed exactly on the base part 3. Is easily done.

Therefore, it is easy to always correct the correct position and correct state.

For example, if the divergent vacant spaces 6 formed between the side edges of the adjacent block bodies 1 are slightly narrowed, the block bodies 1 are bent slightly by the amount of the divergent vacant spaces 6 narrowed. When this is repeated from side to side, the block bodies 1 can be arranged side by side in a curved shape.

In this state, when the four posture holding bolts 10 screwed into the nuts 9 embedded in the corners, for example, the four corners are screwed in and the lower end is brought into contact with the base portion 3, the correct posture is maintained. Then, the block body 1 is fixed onto the base portion 3 by filling the gap 12 between the base portion 3 and the lower surface 7 ′ of the bottom plate 7 with concrete from the divergent void portion 6.

At this time, concrete also flows into the concave groove 8 on the lower surface 7'of the bottom plate 7 which communicates with the divergent space 6, and when it hardens, the block body 1 is firmly fixed to the base portion 3 so that it cannot move. Fix it.

Further, since it can be confirmed that the concrete milk or cement milk 16 injected through the peep hole 11 formed near the central portion of the bottom plate 7 is filled, it can be sufficiently injected without forming a cavity.

If the concrete pouring notch 14 provided on the side edge portion of the divergent space 6 is used, the pouring work is facilitated.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The drawings show a preferred embodiment of the present invention.
One or several fulcrum protrusions 2 are projected downward at or near the center of gravity of the lower surface 7'of the bottom plate 7 of the block body 1, and the posture holding bolt 10 is screwed onto the nut 9 embedded in the corner of the bottom plate 7. The bottom of the bottom plate 7 is mounted on the bottom plate 7'of the bottom plate 7 so that the lower end of the bottom plate 7 can be adjusted up and down, and the rear width of the bottom plate 7 is slightly narrower than the front width of the bottom plate 7.
Forming a splayed void 6 that doubles as a concrete injection part and an adjustment part that slightly bends the front side construction line between 7 and a recessed groove 8 communicating with this splayed void 6 on the lower surface 7 ′ of the bottom plate 7. The present invention relates to a concrete block characterized by being recessed.

Further, the present invention relates to the concrete block according to claim 1, characterized in that a peep hole 11 for confirming the injection degree of the concrete milk or the cement milk 16 is provided near the central portion of the bottom plate 7.

The concrete block according to claim 1, characterized in that a concrete injection notch (14) is provided on the side edge (7 ") of the bottom plate (7) of the left and right block bodies (1) forming the divergent voids (6). It is related.

A bearing plate 5 having a sliding surface is provided on the upper surface of the base portion 3, and a fulcrum protrusion 2 is provided on the bearing plate 5 and projects downward near the center of gravity of the bottom plate 7 of the block body 1. The bottom plate 7 of the block bodies 1 and 1 connected to the left and right is held by bringing the lower ends into contact with each other and holding the block body 1 in the correct posture by adjusting the installation with the posture holding bolts 10 suspended from the ends of the block body 1.・ The block body 1 is laid straight and curved by adjusting the degree of narrowness of the divergent space 6 provided between the blocks 7.
Moreover, concrete milk or cement milk 16 is filled into the gap 12 between the bottom plate 7 and the base portion 3 from the divergent space 6, and it is confirmed that the filling is completed from the peep hole 11 formed in the bottom plate 7. The present invention relates to a concrete construction method characterized in that the block body 1 is fixed to the foundation portion 3.

The fulcrum projection 2 may be formed by using concrete mortar which can ensure hardness, or the fulcrum projection 2 may be formed by projecting a metal body for better sliding. The drawing shows a case where a sliding plate 15 is attached to the lower end of the fulcrum projection 2, and an embodiment in which the sliding plate 15 and the support plate 5 allow better sliding movement is shown.

The foundation portion 3 is formed by solidifying the foundation stone portion 3'with concrete and placing a waste concrete layer 3 "thereon. Even if the waste concrete layer 3" has irregularities, mortar milk or cement milk is used. If 16 is injected from the divergent space 6, the above-mentioned unevenness will not be a problem.

When concrete milk or cement milk 16 is injected from the divergent space 6, the gap between the bottom plate 7 and the foundation part 3 is placed because the shielding plates 17 are put in front and behind.
Can be charged to 12. At this time, in the embodiment shown in the figure, a plurality of concave groove 8 is provided on the vertical and horizontal sides so that the cement milk 16 and the like can flow into the gap 12 better, and after hardening, the hardened ridge 13 is formed in the ridge 13. 13 serves to prevent the block body 1 from sliding.

When the peephole 11 is made large, it becomes possible to inject concrete milk or cement milk 16 through the peephole 11.

If the notch 14 for concrete injection is formed in a semicircular shape, the injection work can be performed easily.

Further, if a bearing plate 5 having a sliding surface such as a metal plate is placed as a liner plate on the lower end of the posture holding bolt 10 and the lower end of the fulcrum projection 2, the adjustment of the shearing motion becomes good. In the drawings, reference numeral 18 is a reinforcing wall, and 19 is a connecting portion between adjacent block bodies 1.

[0028]

As described above, according to the present invention, since the fulcrum protrusions hung on the center of gravity of the bottom plate are supported on the supporting plate having the sliding surface, the swinging and the shearing motion are facilitated and the divergent shape is obtained. By adjusting the gap of the void, it is also possible to bend the front side into a curved shape, and by maintaining the correct posture with the posture holding bolt, concrete injection is performed through the divergent void and it becomes easier to inject. It is a concrete block and a concrete block construction method that are excellent in practicability, such that the concrete groove can be injected well and, after hardening, can be firmly installed on the foundation without slipping.

[Brief description of drawings]

FIG. 1 is a side view of a block body.

FIG. 2 is a plan view of a block body.

FIG. 3 is a bottom view of the block body.

[Explanation of symbols]

 1 block body 2 fulcrum protrusion 3 foundation 5 support plate 6 end widened void 7 bottom plate 7'bottom surface 7 "side edge 8 concave groove 9 nut 10 posture holding bolt 11 peep hole 12 gap 14 concrete injection notch 16 Cement milk

Claims (4)

[Claims] Claims: 1. One or several fulcrum protrusions are projected downward at or near the center of gravity of the lower surface of the bottom plate of the block body, and an attitude holding bolt is screwed to a nut embedded in a corner of the bottom plate. The lower end of the posture holding bolt is projected from the lower surface of the bottom plate so that it can be adjusted up and down, and the rear width is made slightly narrower than the front width of the bottom plate so that the concrete injection part and the front construction line are between the bottom plates of adjacent concrete blocks. A concrete block characterized in that a divergent void is formed also as an adjusting part for slightly refracting, and a groove groove communicating with the divergent void is provided on the lower surface of the bottom plate. 2. The concrete block according to claim 1, wherein a peep hole for confirming the injection degree of concrete milk or cement milk is provided near the central portion of the bottom plate. 3. The concrete block according to claim 1, wherein cutouts for concrete injection are provided on the side edges of the bottom plates of the left and right block bodies forming the divergent voids. 4. A support plate whose surface is formed as a sliding surface is provided on the upper surface of the base part, and the lower end of a fulcrum projection projecting downwardly near the center of gravity of the bottom plate of the block is brought into contact with the support plate,
Adjusting the installation with the posture holding bolts that hang vertically from the end of the block body, hold the block body in the correct posture, and adjust the degree of narrowness of the divergent voids provided between the bottom plates of the block bodies that are connected to the left and right. Then, the block body is laid straight and curved, and concrete milk or cement milk is packed into the gap between the bottom plate and the foundation part from the divergent space, and filled from the peep hole formed in the bottom plate. A concrete construction method characterized in that after confirming that it has been fixed, the block body is fixed to the foundation part.