Concrete block for post and method for constructing concrete block for post

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 pillar and a method for constructing the concrete block for a pillar. [Background technology]

[0002] A wire rope guardrail 200 as shown in Fig. 7 may be installed as a relatively simple guardrail for opposing median strips (Patent Document 1). When changing such a simple guardrail to a stronger concrete guardrail, conventionally, the wire rope guardrail 200 is entirely removed and then concrete blocks are installed.

[0003] However, there was a problem in that it was costly and time-consuming to remove the wire rope type protective fence 200. In particular, while the wire rope 210 could be easily removed, it took time and effort to remove the support posts 220. Therefore, there was a demand for a concrete block that could be installed using the support posts 220 of the wire rope type protective fence 200. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-186535 A DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of these problems, and its object is to provide a concrete block for posts and a construction method for the concrete block for posts that can quickly and easily install a wire rope type protective fence to a concrete protective fence, taking advantage of the benefits of the posts without removing the posts of the wire rope type protective fence. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention employs the following means.

[0007] The concrete block for support according to the present invention is a concrete block body including a post insertion hole into which a post is inserted, and a connecting groove including a vertical groove formed vertically on both side surfaces in the length direction, and an upper hook-shaped groove portion and a lower hook-shaped groove portion formed in a generally J-shape at the upper end and lower end, the upper hook-shaped groove portion and the lower hook-shaped groove portion being formed closer to the center in the length direction than the vertical groove portion; A connector that is inserted into the connecting groove and includes a main plate portion, and an upper hook portion and a lower hook portion that are formed in a J-shaped hook shape above and below the main plate portion; The present invention is characterized in that it is provided with:

[0008] According to the concrete block for support of the present invention, since the support insertion hole is provided, the support of the wire rope type guard fence is not removed, and the concrete block body is fixed by the already fixed support by inserting the support into the support insertion hole of the concrete block body from above. In this way, the concrete block body is positioned and fixed by the fixed support, so that a concrete block body that is lighter and thinner in width can be used compared to the case where the concrete block is installed alone. In addition, the concrete block for support of the present invention has a connector that connects adjacent concrete block bodies, and the concrete block body is formed with a connecting groove into which the connector can be inserted and fixed, so that the relative positions of the concrete block bodies are fixed by attaching the connector between the connecting groove of the installed concrete block body and the connecting groove adjacent to it. In this way, the concrete block for support of the present invention is positioned and fixed to the road surface by the support, and the concrete bodies can be positioned and installed by the connector.

[0009] In the concrete block for support pillars according to the present invention, the support pillar insertion hole may be formed in a truncated cone shape with a diameter gradually increasing downward. By adopting such a configuration, when installing the concrete block from above so that the support pillar is inserted into the support pillar insertion hole in the concrete block body, the position of the concrete block body can be corrected while installing the concrete block.

[0010] Furthermore, in the concrete block for pillars 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 connector inner surface of the upper hook-shaped part of the connector may be made into an inclined surface having the same angle as the inner surface of the upper hook-shaped groove part, and the connector inner surface of the lower hook-shaped part of the connector may be made into an inclined surface having the same angle as the inner surface of the lower hook-shaped groove part. By making the surfaces where the connector contacts the connecting groove and the connector into inclined surfaces having the same angle, when an adjacent concrete block body is installed, the concrete block body can be moved so as to be drawn to the installed adjacent concrete block body.

[0011] Furthermore, in the concrete block for pillars according to the present invention, The concrete block may be constructed such that the connecting grooves are formed at the most protruding positions on both longitudinal side surfaces of the concrete block. By adopting such a configuration, the concrete block bodies can be installed at an angle to each other in the horizontal direction.

[0012] The present invention also provides a method for laying the concrete block for a pillar according to any one of claims 1 to 4. The method for laying the concrete block for a pillar according to the present invention comprises the following steps. (1) Wire removal process for removing the wires of wire rope guardrails (2) A concrete body installation process in which the concrete block body is inserted into the support insertion hole of the concrete block body from above the support and gradually lowered to install the concrete block body. (3) A connector installation step of installing the connector in the connector groove by inserting the upper key-shaped portion into the upper hook-shaped groove portion. (4) An adjacent concrete body installation process in which a separately prepared concrete body is inserted into the support insertion hole of the concrete block body from above the adjacent support, and at the same time, the connector is gradually lowered while fitting it into the connector groove.

[0013] Furthermore, in the method for laying a concrete block for a support according to the present invention, (4) After the adjacent concrete body installation process, (5) the concrete body fixing process is carried out by pouring mortar into the post insertion holes to fix the Conley, block body, and posts. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing a concrete block for pillar 100 according to an embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line AA of the concrete block for pillar 100 according to the embodiment. [Diagram 3] FIG. 3 is an enlarged view of a connector groove and a connector of the concrete block for pillar 100 according to the embodiment. [Figure 4] FIG. 4 is a plan view showing another embodiment of the concrete block body 10 according to the embodiment. [Diagram 5] FIG. 5 is an explanatory diagram for explaining a construction method of the concrete block for pillar 100 according to the embodiment. [Figure 6] FIG. 7 is a perspective view of a wire rope type safety fence 200. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the embodiment and drawings described below are intended to exemplify a part of the embodiment of the present invention, and are not intended to be used for the purpose of limiting the present invention to these configurations. Also, the same or similar reference symbols are used for corresponding components in each drawing. Note that 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 a concrete block for a post 100 according to this embodiment is shown in Fig. 1. The concrete block for a post 100 according to the present invention is a concrete block for attaching to a post of a wire rope-type guardrail to constitute a concrete guardrail, and includes a concrete block body 10 and a connector 50 for connecting the concrete block bodies 10 together.

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

[0018] The post insertion hole 11 penetrates the concrete block body 10 from top to bottom in the height direction, and has a diameter larger than the diameter of the post 220 to be inserted. Preferably, the post insertion hole 11 is made in a truncated cone shape with a larger diameter on the lower side, by making the hole diameter on the lower surface larger, it is possible to easily insert the post 220 during installation, and since the hole diameter gradually narrows as the concrete block body 10 is lowered, the concrete block body 10 can be lowered while being adjusted to a predetermined position.

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

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

[0021] In addition, the inner surface 12d of the upper hook-shaped groove portion 12b of the connector groove 12 may be formed as an inclined surface with respect to the vertical so that the upper side is wider, as shown in Fig. 3, and the inner surface 12e of the lower hook-shaped groove portion 12c of the connector groove 12 may be formed as an inclined surface with respect to the vertical so that the lower side is wider. In correspondence with this inclined surface, the connector inner surface 52a of the upper hook-shaped portion 52 of the connector 50 may be formed as an inclined surface with respect to the vertical so that the lower side is wider, and the connector inner surface 53a of the lower hook-shaped portion 53 of the connector 50 may be formed as an inclined surface with respect to the vertical so that the upper side is wider. In this case, it is preferable that the angle of the inclined surface of the inner surface 12d and the inclined surface of the connector inner surface 52a with respect to the vertical be the same angle, and the angle of the inclined surface of the inner surface 12e and the inclined surface of the connector inner surface 53a with respect to the vertical be the same angle. By forming the concrete block bodies 10 in this manner, when an adjacent concrete block body 10 is placed next to another concrete block body 10, the concrete block bodies 10 can be placed close to each other when the concrete block bodies 10 are lowered slightly apart. Also, the concrete block bodies 10 can be placed at an angle in the height direction on an undulating road.

[0022] In addition, both side surfaces 10a in the longitudinal direction of the concrete block body 10 may be formed in a mountain-folded shape so that the connector grooves 12 protrude most proximally, as shown in Fig. 4. By forming them in this way, the concrete block bodies 10 can be installed at an angle to each other in the horizontal direction.

[0023] The concrete block 100 for a support prepared as described above is used as follows. As shown in FIG. 5, the wire is first removed from the wire rope type guard fence 200 at the site to be installed, leaving only the support 220. Then, the concrete block body 10 is gradually lowered while being inserted into the support insertion hole 11 of the concrete block body 10 from above the support 220. The support insertion hole 11 is made so that the diameter becomes narrower as it goes upward, so the concrete block body 10 is laid while correcting its position as it is lowered. Then, after the first concrete block body 10 is installed, the connector 50 is attached to the connector groove 12 so that the upper hook-shaped part 52 is inserted into the upper hook-shaped groove part 12b. Then, another concrete block body 10 prepared next is inserted into the support insertion hole 11 of the concrete block body 10 from above the adjacent support 220, and at the same time, the connector 50 is gradually lowered while being fitted into the connector groove 12. At this time, if the inner surface 12e of the lower hook-shaped groove portion 12c of the groove for connector 12 and the inner surface 53a of the connector of the connector 50 are formed on an inclined surface, the adjacent concrete block bodies 10 are corrected and arranged so as to approach each other as they are lowered. If necessary, as shown in Figure 2, mortar 60 may be poured into the post insertion hole to fix the Conley, the block body, and the post. By repeating the above steps, the concrete blocks for posts 100 are arranged continuously, and a protective fence can be laid in the median strip.

[0024] The pillar concrete block 100 thus installed has a fixed pillar inside, so that a lighter and thinner concrete block body 10 can be used compared to when the concrete block is installed alone.

[0025] The present invention is not limited to the above-described embodiment, and can be embodied in various forms within the technical scope of the present invention.

[0026] As shown in the above-described embodiment, the present invention can be industrially used as a protective fence for a median strip. [Explanation of symbols]

[0027] 10...Concrete block body, 10a...Both side surfaces, 11...Support insertion hole, 12...Connector groove, 12a...Vertical groove, 12b...Upper hook-shaped groove, 12c...Lower hook-shaped groove. 12d...Inner surface, 12e...Inner surface, 200...Protective fence, 220...Support, 50...Connector, 51...Main plate, 52...Upper hook-shaped portion, 52a...Inner surface, 53...Lower hook-shaped portion, 53a...Inner surface. 100...Concrete block for support

Claims

1. a concrete block body including a post insertion hole into which a post is inserted, and a connecting groove including a vertical groove formed vertically on both side surfaces in the length direction, and an upper hook-shaped groove portion and a lower hook-shaped groove portion formed in a generally J-shape at the upper end and lower end, the upper hook-shaped groove portion and the lower hook-shaped groove portion being formed closer to the center in the length direction than the vertical groove portion; A connector that is inserted into the connecting groove and includes a main plate portion, and an upper hook portion and a lower hook portion that are formed in a J-shaped hook shape above and below the main plate portion; A concrete block for a pillar, comprising:

2. 2. The concrete block for pillars according to claim 1, wherein the pillar insertion hole is formed in a truncated cone shape whose diameter gradually increases downward.

3. 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 concrete block for supports according to claim 1, characterized in that the inner surface of the upper hook-shaped portion of the connector is made into 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 made into an inclined surface having the same angle as the inner surface of the lower hook-shaped groove portion.

4. 2. The concrete block for support according to claim 1, wherein the connecting grooves are formed so as to protrude most on both side surfaces in the longitudinal direction of the concrete block body.

5. A method for laying a concrete block for a support according to any one of claims 1 to 4, (1) Wire removal process to remove wires from wire rope guardrails (2) A concrete block body installation process in which the concrete block body is inserted into the support insertion hole of the concrete block body from above the support and gradually lowered to install the concrete block body. (3) A connector mounting step of mounting the connector in the connector groove by inserting the upper key-shaped portion into the upper hook-shaped groove portion. (4) An adjacent concrete block body installation process in which a separately prepared concrete block body is inserted into the support insertion hole of the concrete block body from above the adjacent support, and at the same time, the connector is gradually lowered while fitting it into the connector groove.

6. 6. The method for laying concrete blocks for supports according to claim 5, further comprising the steps of: (4) After the adjacent concrete body installation process, (5) pour mortar into the post insertion holes to fix the Conley, block body, and post to the concrete body.

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