Concrete block for pillar and construction method of concrete block for pillar

Abstract

To provide a concrete block for a post that can be quickly and easily installed by utilizing the posts of a wire rope type protective fence, and a method for constructing the concrete block for a post.SOLUTION: A concrete block for pillars 100 of the present invention comprises a concrete block body 10 having a pillar insertion hole 11 into which a pillar is inserted, and a connecting groove 12 consisting of a vertical groove formed vertically on both side surfaces 10a in the longitudinal direction and an upper hook-shaped groove portion and a lower hook-shaped groove portion formed in an approximately J-shape at the upper end and lower end and closer to the center in the longitudinal direction than the vertical groove portion, and a connector 50 inserted into the connecting groove 12 and having a main plate portion and an upper hook-shaped portion and a lower hook-shaped portion formed in a J-shaped hook shape formed above and below the main plate portion.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a concrete block for a support column and a construction method of the concrete block for a support column.

Background Art

[0002] As a relatively simple protective fence for a face - type central separation strip, a wire - rope type protective fence 200 as shown in FIG. 7 may be installed (Patent Document 1). When changing such a simple protective fence to a stronger concrete protective fence, conventionally, after removing all of the wire - rope type protective fence 200, concrete blocks were installed.

[0003] However, there was a problem that it took time and cost to remove the wire - rope type protective fence 200. In particular, although the wire rope 210 could be easily removed, it took time and labor to remove the support column 220. Therefore, there has been a desire for a concrete block that can be installed using the support column 220 of the wire - rope type protective fence.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0005] The present invention has been made in view of such problems, and an object of the present invention is to provide a concrete block for a support column and a construction method of the concrete block for a support column that can quickly and easily install a wire - rope type into a concrete protective fence by making use of the advantages of the support column without removing the support column of the wire - rope type protective fence.

Means for Solving the Problems

[0006] To achieve the above object, the present invention takes the following means.

[0007] The concrete block for a column according to the present invention comprises a concrete block body having an insertion hole for a column into which the column is inserted, vertical groove portions formed perpendicular to both side surfaces in the longitudinal direction, and a connecting groove comprising an upward hook-shaped groove portion and a downward hook-shaped groove portion formed in a substantially J shape provided at the upper end portion and the lower end portion and formed closer to the center in the longitudinal direction than the vertical groove portions; a connector inserted into the connecting groove, having a main plate portion, and an upward hook-shaped portion and a downward hook-shaped portion formed in a J shape formed above and below the main plate portion; and is characterized by comprising the above.

[0008] According to the concrete block for a column of the present invention, since the insertion hole for a column is provided, the column of the wire rope type protective fence can be installed from above so that the column is inserted into the insertion hole for a column of the concrete block body without removing the column, and the concrete block body is fixed by the already fixed column. In this way, since the concrete block body is positioned and fixed by the fixed column, a lightweight and thin-width concrete block body can be used as compared with the case of installing with a single concrete block. Further, the concrete block for a column according to the present invention has a connector for connecting adjacent concrete block bodies, and a connecting groove into which the connector can be inserted and fixed is formed in the concrete block body. Therefore, by attaching a connector between the connecting groove of the installed concrete block body and the connecting groove adjacent thereto, the relative positions of the mutual concrete block bodies are fixed. In this way, the concrete block for a column according to the present invention is positioned and fixed by the column with respect to the road surface, and the concrete bodies can be installed with their positions determined by each other by the connector.

[0009] Further, in the concrete block for a column according to the present invention, the insertion hole for the column may be formed in a frustum shape whose diameter gradually increases downward. By adopting such a configuration, when installing the column from above so as to insert the column into the insertion hole for the column of the concrete block body, it is possible to install while correcting the position of the concrete block body.

[0010] Furthermore, in the concrete block for a column according to the present invention, The inner surface of the upper hook-shaped groove portion of the connecting groove is formed as an inclined surface inclined with respect to the vertical so that the lower side is wider, and the inner surface of the lower hook-shaped groove portion is formed as an inclined surface inclined with respect to the vertical so that the upper side is wider. The inner surface of the upper hook-shaped portion of the connector is formed as an inclined surface having the same angle as the inner surface of the upper hook-shaped groove portion, and the inner surface of the lower hook-shaped portion of the connector is formed as an inclined surface having the same angle as the inner surface of the lower hook-shaped groove portion. By forming the surfaces where the connecting groove and the connector come into contact as inclined surfaces with the same angle, when installing adjacent concrete block bodies, it is possible to move and install the concrete block body so as to be attracted to the adjacent concrete block body on which the concrete block body is installed.

[0011] Furthermore, in the concrete block for a column according to the present invention, Both side surfaces in the longitudinal direction of the concrete block body may be characterized in that the connecting grooves are formed to protrude most. By adopting such a configuration, it is possible to install the concrete block bodies at an angle in the horizontal direction.

[0012] The present invention also provides a method for laying the concrete block for a column according to any one of claims 1 to 4. The method for laying the concrete block for a column according to the present invention comprises the following steps. (1) A wire removal step of removing the wire of the wire rope type protective fence (2) Concrete Block Body Installation Step: Lower the concrete block body gradually while inserting it into the insertion hole for the support column of the concrete block body from above the support column to install the concrete block body. (3) Connector Attachment Step: Attach the connector to the connector groove by inserting the upper key-shaped part into the upper hook-shaped groove part. (4) Adjacent Concrete Block Body Installation Step: Insert a separately prepared concrete block body into the insertion hole for the support column of the concrete block body from above the adjacent support column, and at the same time, gradually lower it while fitting the connector into the connector groove to install the adjacent concrete block body.

[0013] Furthermore, in the method of laying the concrete block for the support column according to the present invention, (4) After the adjacent concrete block body installation step, (5) Mortar Pouring Step: Pour mortar into the insertion hole for the support column to fix the concrete, the block body, and the support column.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the embodiments and drawings described below are examples of some of the embodiments of the present invention and are not used for the purpose of limiting them to these configurations. Also, in each figure, corresponding components are given the same or similar reference numerals. In the specification and claims, the "length direction", "width direction", and "height direction" refer to the directions shown in FIG. 1.

[0016] A perspective view of the concrete block 100 for a support column according to this embodiment is shown in FIG. 1. The concrete block 100 for a support column according to the present invention is a concrete block for attaching to a support column of a wire rope type protective fence to form a concrete protective fence, and includes a concrete block main body 10 and a connector 50 for connecting the concrete block main bodies 10 to each other.

[0017] The concrete block main body 10 is basically formed in the shape of a concrete wall surface in order to ensure the weight for functioning as a protective fence. In this embodiment, a so-called precast type concrete is used to make a Florida type protective fence with a thick bottom surface side and a thin upper side, but the form of the concrete block main body 10 is not particularly limited, and for example, it may be a single slope type, a straight wall type, or other irregular shapes. The concrete block main body 10 mainly includes an insertion hole 11 for a support column into which the support column is inserted and a groove 12 for a connector formed on both side surfaces 10a.

[0018] The insertion hole 11 for a support column penetrates vertically in the height direction of the concrete block main body 10 and has a diameter larger than the diameter of the support column 220 to be inserted. Preferably, the insertion hole 11 for a support column is made in a frustum of a cone shape such that the diameter of the lower side is larger. By making it in a frustum of a cone shape, the hole diameter of the lower surface becomes larger, making it easier to insert the support column 220 during installation. When the concrete block main body 10 is lowered, the hole diameter gradually becomes narrower, so that the concrete block main body 10 can be lowered while being corrected to a predetermined position.

[0019] The groove 12 for the connector is a groove into which a connector 50 used when connecting adjacent concrete blocks 100 for columns is inserted. The groove 12 for the connector has a vertical groove portion 12a that communicates vertically in the height direction with a predetermined width at the center in the width direction of both side surfaces 10a in the length direction, and an upper hook-shaped groove portion 12b and a lower hook-shaped groove portion 12c that are formed in a substantially J shape hooked from the vertical groove portion 12a toward the center at the upper end and the lower end.

[0020] The connector 50 is a member for inserting into the groove 12 for the connector to connect adjacent concrete block bodies 10, and is made in a plate shape of metal. As shown in FIG. 2, the connector 50 includes a main plate portion 51, and upper hook-shaped portions 52 and lower hook-shaped portions 53 formed above and below the main plate portion 51. The main plate portion 51 has a thickness that can be inserted into the vertical groove portion 12a of the concrete block body 10, has a width that is more than twice the depth d of the groove of the vertical groove portion 12a, and has the same length as the height of the concrete block body 10. The upper hook-shaped portion 52 is formed in a J-shaped hook so as to have the same form as the upper hook-shaped groove portion 12b of the concrete block body 10. The lower hook-shaped portion 53 is provided on the lower side of the main plate portion 51 and on the opposite side of the upper hook-shaped portion 52 with respect to the main plate portion 51. The lower hook-shaped portion 53 is formed in a J-shaped hook so as to have the same form as the lower hook-shaped groove portion 12c of the concrete block body 10. Note that the groove 12 for the connector is preferably formed as a groove having a width that is more than twice the thickness of the connector 50. By making it wider than the thickness of the connector 50, the concrete block bodies 10 can be installed at an angle in the horizontal direction.

[0021] Further, as shown in FIG. 3, the inner surface 12d of the upper hook-shaped groove portion 12b of the connecting tool groove 12 may be formed as an inclined surface with respect to the vertical so that the upper side becomes wider. The inner surface 12e of the lower hook-shaped groove portion 12c of the connecting tool groove 12 may be formed as an inclined surface with respect to the vertical so that the lower side becomes wider. Corresponding to this inclined surface, the inner surface 52a of the connecting tool of the upper hook-shaped portion 52 of the connecting tool 50 may be formed as an inclined surface with respect to the vertical so that the lower side becomes wider. The inner surface 53a of the connecting tool of the lower hook-shaped portion 53 of the connecting tool 50 may be formed as an inclined surface with respect to the vertical so that the upper side becomes wider. At this time, the angle with respect to the vertical of the inclined surfaces of the inner surface 12d and the inner surface 52a of the connecting tool may be formed to be the same angle, and the angle with respect to the vertical of the inclined surfaces of the inner surface 12e and the inner surface 53a of the connecting tool may be formed to be the same angle. By forming in this way, when installing the concrete block body 10 adjacent to the concrete block body 10, it can be installed while bringing the concrete block body 10 closer when lowered in a slightly separated state. Also, the concrete block bodies 10 can be installed with an angle in the height direction on a road with undulations.

[0022] Further, as shown in FIG. 4, both side surfaces 10a in the length direction of the concrete block body 10 may be formed in a mountain-fold shape so that the connecting tool groove 12 protrudes the most. By forming in this way, the concrete block bodies 10 can be installed with an angle in the horizontal direction.

[0023] The concrete block 100 for a support column manufactured as described above is used as follows. The wire rope type protective fence 200 at the site where installation is planned is first made to have only the support column 220 by removing the wire as shown in Fig. 5. Then, the concrete block body 10 is gradually lowered while being inserted into the support column insertion hole 11 of the concrete block body 10 from above the support column 220. Since the support column insertion hole 11 is manufactured so that the diameter becomes narrower as it goes upward, the concrete block body 10 is laid while the position of the concrete block body 10 is corrected as it is lowered. After installing the first concrete block body 10, the coupler 50 is attached to the coupler groove 12 by inserting the upper hook portion 52 into the upper hook groove portion 12b. Then, another prepared concrete block body 10 is inserted into the support column insertion hole 11 of the concrete block body 10 from above the adjacent support column 220, and at the same time, the coupler 50 is gradually lowered while being fitted into the coupler groove 12. At this time, if the inner surface 12e of the lower hook groove portion 12c of the coupler groove 12 and the inner surface 53a of the coupler of the coupler 50 are formed as inclined surfaces, the adjacent concrete block bodies 10 are corrected and arranged to be close to each other as they are lowered. If necessary, as shown in Fig. 2, mortar 60 may be poured into the support column insertion hole to fix the concrete, the block body, and the support column. By repeating the above operations, the concrete blocks 100 for support columns are continuously arranged, and a protective fence can be laid in the median strip.

[0024] Since the concrete block 100 for a support column installed in this way has a support column fixed inside, a lightweight and thin concrete block body 10 can be used as compared with the case of installing a single concrete block.

[0025] Note that the present invention is not limited to the above-described embodiments at all, and can be implemented in various modes as long as it belongs to the technical scope of the present invention.

[0026] As shown in the above-described embodiments, it is industrially applicable as a protective fence for the median strip.

Explanation of reference numerals

[0027] 10… Concrete block body, 10a… Both side surfaces, 11… Insertion hole for column, 12… Groove for connector, 12a… Vertical groove part, 12b… Upper hook-shaped groove part, 12c… Lower hook-shaped groove part. 12d… Inner surface, 12e… Inner surface, 200… Guardrail, 220… Column, 50… Connector, 51… Main board part, 52… Upper hook-shaped part, 52a… Inner surface, 53… Lower hook-shaped part, 53a… Inner surface. 100… Concrete block for column

Claims

1. A concrete block body comprising: an insertion hole for a column into which the column is inserted; vertical groove portions formed perpendicular to both side surfaces in the length direction; and a connecting groove composed of an upward hook-shaped groove portion and a downward hook-shaped groove portion formed in a substantially J shape provided at the upper end portion and the lower end portion and formed closer to the central side in the length direction than the vertical groove portions; A connector inserted into the connecting groove, comprising: a main plate portion; and an upward hook-shaped portion and a downward hook-shaped portion formed in a J shape formed above and below the main plate portion; A concrete block for a column, characterized by comprising the above.

2. The concrete block for a column according to claim 1, wherein the insertion hole for the column is formed in a frustum shape with a gradually increasing diameter downward.

3. The inner surface of the upward hook-shaped groove portion of the connecting groove is formed as an inclined surface inclined with respect to the vertical so that the lower side is wider, and the inner surface of the downward hook-shaped groove portion is formed as an inclined surface inclined with respect to the vertical so that the upper side is wider. The inner surface of the upward hook-shaped portion of the connector is formed as an inclined surface having the same angle as the inner surface of the upward hook-shaped groove portion, and the inner surface of the downward hook-shaped portion of the connector is formed as an inclined surface having the same angle as the inner surface of the downward hook-shaped groove portion. The concrete block for a column according to claim 1, characterized by this.

4. The concrete block for a column according to claim 1, wherein both side surfaces in the length direction of the concrete block body are formed with the connecting groove protruding most.

5. In a method of laying the concrete block for a column according to any one of claims 1 to 4, a method of laying the concrete block for a column, characterized by comprising the following steps. (1) A wire removal step of removing the wire of the wire rope type protective fence. (2) A concrete block body installation step of installing the concrete block body while gradually lowering it while inserting the concrete block body from above the column into the insertion hole for the column of the concrete block body. (3) A connector attachment step of attaching the connector to the connector groove so that the upper key-shaped portion is inserted into the upper hook-shaped groove portion. (4) An adjacent concrete block body installation step of installing an adjacent concrete block body by inserting a separately prepared concrete block body from above the adjacent column into the insertion hole for the column of the concrete block body and gradually lowering it while fitting the connector into the connector groove.

6. A method of laying a concrete block for a column according to claim 5, further comprising the following steps, characterized in that it is a method of laying a concrete block for a column. (5) A concrete body fixing step of pouring mortar into the insertion hole for the column to fix the concrete block body and the column, following the adjacent concrete body installation step.

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