Retaining wall guard fence post support

Abstract

The present invention aims to provide a support for a retaining wall protective fence post that makes it easy to adjust the height at which the post is suspended above the concrete pouring surface during construction of a retaining wall in which the lower part of the protective fence post is buried. [Solution] This problem was solved by a retaining wall protective fence post support device, which comprises a first locking member (1) that is embedded in the retaining wall (W) with its longitudinal direction along the vertical direction, a second locking member (2) having a second locking portion that engages with the first locking portion (11) of the first locking member (1) at a predetermined position along the longitudinal direction of the first locking member (1), and a support portion (3) arranged on the side side of the second locking member (2) and supporting the lower part of a retaining wall protective fence post (P).

Description

[Technical field]

[0001] The present invention relates to a support device for a protective fence post that is erected on the top surface of a retaining wall and is used to adjust the height of the protective fence post that is exposed from the top surface of the retaining wall. [Background technology]

[0002] Conventionally, rockfall protection fences have been known that are erected on the top surface of a retaining wall to hold back soil, rocks, etc., that may roll down due to loosening of the ground in a mountain and cause damage to roads, houses, buildings, etc. The lower parts of the posts used in such protection fences are embedded in the retaining wall, and their upper parts are exposed from the top surface of the retaining wall.

[0003] For example, Patent Document 1 discloses that multiple pillars for protecting against landslides and rockfalls are inserted at their lower parts into foundation sheath pipes embedded in the base concrete, and are installed so as to stand upright at regular intervals in the width direction on the upper surface of the front part of the base concrete.

[0004] Furthermore, Patent Document 2 discloses an existing protective fence having a concrete retaining wall, a number of posts erected on the retaining wall, and a protective net hung horizontally between the posts. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2021-11696 A [Patent Document 1] Utility Model Registration No. 3235734 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the posts for the protective fence described in Patent Documents 1 and 2, it is preferable to have multiple posts of the same height to improve appearance and to prevent the falling of soil, sand, rocks, and the like. When constructing a retaining wall at an on-site site, the concrete is poured in predetermined stages, for example every 1 m, and in order to bury the lower parts of the posts for the protective fence, it is necessary to fix the posts in a state where they are suspended at a predetermined height above the concrete pouring surface below, but there was an issue that it was difficult to adjust the height of the posts.

[0007] Therefore, an object of the present invention is to provide a support device for a retaining wall protective fence post that makes it easy to adjust the height at which the post is suspended above the concrete pouring surface during construction of a retaining wall in which the lower part of the protective fence post is buried. [Means for solving the problem]

[0008] [1] That is, the retaining-wall protective fence post support device disclosed in the present application comprises a first locking member (1) that is embedded in a retaining wall (W) with its longitudinal direction along the vertical direction, a second locking member (2) having a second locking portion (21) that engages with the first locking portion (11) of the first locking member (1) at a predetermined position along the longitudinal direction of the first locking member (1), and a support portion (3) that is disposed on the side of the second locking member (2), supports a lower portion of a retaining-wall protective fence post (P), and is open upward in the longitudinal direction of the first locking member (2), and has at least one shape selected from the group consisting of a U-shape and a V-shape; The first locking portion is provided on an outer peripheral side surface of the first locking member. The second locking portion is provided on an inner peripheral side surface of the second locking member. It is a female screw, The retaining wall protective fence post support is characterized in that the spacing between the openings is gradually wider toward the open end of the support portion (3).

[0011] [ 2 The retaining wall guardrail support (P) is an H-shaped steel. [1] This is a post support for the retaining wall protective fence described above. Effect of the Invention

[0013] According to the retaining wall protective fence post support device of the present invention, when installing a retaining wall in which the lower part of the protective fence post is buried, it is easy to adjust the height at which the post is suspended above the concrete pouring surface during construction of the retaining wall. [Brief description of the drawings]

[0014] [Figure 1] 1 is a perspective view showing a retaining wall protective fence post support device according to a first embodiment of the present invention; [Diagram 2] This is a side cross-sectional view of a retaining wall during construction, in which a retaining wall protective fence post support device for the first embodiment of the present invention is installed. [Diagram 3] This is a side cross-sectional view of a retaining wall being constructed in which a retaining-wall protective fence post support device relating to the first embodiment of the present invention has been installed and H-shaped steel has been arranged. [Figure 4] FIG. 1 is a plan view of a retaining wall under construction in which a retaining wall protective fence post support device for the first embodiment of the present invention has been installed and H-shaped steel has been arranged. [Diagram 5] FIG. 2 is a side view of a retaining wall after construction in which the retaining-wall protective fence post support device relating to the first embodiment of the present invention has been installed and H-shaped steel has been arranged. [Figure 6] Fig. 1(a) is a perspective view showing a retaining-wall protective fence post support device according to a first embodiment of the present invention, and (b) is a perspective view of a second fastening member constituting the retaining-wall protective fence post support device according to the first embodiment of the present invention. [Figure 7] Fig. 1(a) is a perspective view showing a retaining-wall protective fence post support device according to a second embodiment of the present invention, and (b) is a perspective view of a second locking member and a holder constituting the retaining-wall protective fence post support device according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The following is a detailed description of the retaining wall guard fence post support according to the embodiment of the present invention, based on the drawings. Note that the embodiment described below is a preferred example for carrying out the present invention, and therefore various technical limitations are imposed, but the present invention is not limited to this embodiment unless otherwise specified in the following description to limit the invention. The vertical direction or up-down direction in the description refers to the up-down direction in Figures 1 to 3, 6, and 7.

[0016] Hereinafter, a retaining-wall protective fence post support according to an embodiment of the present invention will be described with reference to Figs. 1 to 7. Fig. 1 is a perspective view showing a retaining-wall protective fence post support according to a first embodiment of the present invention. Fig. 2 is a side cross-sectional view during construction of a retaining wall in which a retaining-wall protective fence post support according to a first embodiment of the present invention is installed. Fig. 3 is a side cross-sectional view during construction of a retaining wall in which a retaining-wall protective fence post support according to a first embodiment of the present invention is installed and an H-shaped steel is arranged. Fig. 4 is a plan view during construction of a retaining wall in which a retaining-wall protective fence post support according to a first embodiment of the present invention is installed and an H-shaped steel is arranged. Fig. 5 is a side view after construction of a retaining wall in which a retaining-wall protective fence post support according to a first embodiment of the present invention is installed and an H-shaped steel is arranged. Fig. 6(a) is a perspective view showing a retaining-wall protective fence post support according to a second embodiment of the present invention. Fig. 6(b) is a perspective view of a second locking member constituting a retaining-wall protective fence post support according to a second embodiment of the present invention. Fig. 7(a) is a perspective view showing a retaining-wall protective fence post support according to a third embodiment of the present invention. FIG. 7(b) is a perspective view of a second locking member and a holder that constitute a retaining-wall protective fence post support device according to a third embodiment of the present invention. It is.

[0017] [First embodiment] 1 to 5, the retaining-wall protective fence post support device of this embodiment comprises a first locking member 1, a second locking member 2, and a support part 3, which support a post P of a protective fence for a retaining wall W. The retaining-wall protective fence post support device will ultimately be buried in the retaining wall W.

[0018] The first locking member 1 is a member that is embedded in the retaining wall W with its longitudinal direction aligned in the vertical direction. The first locking portion 11 of the first locking member 1 can determine the vertical position of the support portion 3 that supports the lower portion of the guardrail support P of the retaining wall W by engaging with the second locking portion 21 of the second locking member 2. Specifically, the first locking portion 11 of the first locking member 1 is any one selected from a male screw, a female screw, a groove, a hole, and a protrusion, and can determine the vertical position of the support portion 3 that supports the lower portion of the guardrail support P of the retaining wall W by engaging with the second locking portion 21 of the second locking member 2 that is any one selected from a female screw, a male screw, a groove, a hole, and a protrusion. The first locking member 1 is ultimately embedded in the retaining wall W with its longitudinal direction aligned in the vertical direction. The first locking member 1 in this embodiment is a long and thin rod-shaped member with a male screw provided on the outer circumferential side as the first locking portion 11, as shown in FIG. 1 and the like. In this embodiment, the first locking portion 11 of the first locking member 1 is formed as a male screw provided on the outer circumferential side surface, but in other embodiments, it may have various shapes selected from a female screw, a groove, a hole, and a protrusion, as long as it can engage with the second locking portion 21. It is preferable that the first locking member 1 is a rod-shaped member having a male screw provided on the outer circumferential side surface as the first locking portion 11, because this makes it easy to arrange the second locking member 2 at a desired position in the longitudinal direction of the first locking member 1 and is inexpensive.

[0019] The second locking member 2 is a member having a second locking portion 21 that engages with the first locking portion 11 of the first locking member 1 at a predetermined position along the longitudinal direction of the first locking member W. The second locking portion 21 of the second locking member 2 can determine the vertical position of the support portion 3 that supports the lower portion of the guardrail support P of the retaining wall W by engaging with the first locking portion 11 of the first locking member 1. Specifically, the second locking portion 21 of the second locking member 2 is any one selected from a female screw, a male screw, a groove, a hole, and a protrusion, and can determine the vertical position of the support portion 3 that supports the lower portion of the guardrail support P of the retaining wall W by engaging with any one selected from a male screw, a female screw, a groove, a hole, and a protrusion of the first locking portion 11 of the first locking member 1. The second locking member 2 in this embodiment is a hexagonal nut in which the second locking portion 21 is formed as a female screw provided on the inner peripheral side surface of the second locking member 2, as shown in FIG. 1 and the like. In this embodiment, the second locking portion 21 of the second locking member 2 is formed as a female screw provided on the inner peripheral side surface of the second locking member 2, but in other embodiments, it may be any shape selected from a male screw, a groove, a hole, and a protrusion, as long as it can engage with the first locking portion 11. Since the second locking member 2 is easy to arrange at a desired position in the longitudinal length of the first locking member 1 and is inexpensive, it is preferable that the second locking member 2 is a nut having a female screw provided on the inner peripheral side surface as the second locking portion 21. In addition, in this embodiment, the first locking portion 11 and the second locking portion 21 are directly engaged with each other, but in other embodiments, they may be indirectly engaged with each other via another member.

[0020] The support part 3 is a member disposed on the side of the second locking member 2 and supports the lower part of the retaining wall protective fence support P. The support part 3 adjusts the height at which the support P is suspended from the concrete pouring surface during construction of the retaining wall W by disposing the second locking member 2 at a desired position in the longitudinal direction of the first locking member 1, so that the lower part of the support P can be supported at a desired height. The support part 3 in this embodiment is a U-shaped member that is directly fixed to the side of the second locking member 2 and opens upward in the longitudinal direction of the first locking member 1, as shown in FIG. 1 and other figures. As shown in FIGS. 3 and 4, the support part 3 supports the lower part of the support P such as an H-shaped steel. In addition, the support part 3 is formed so that the open end side of the U-shape gradually becomes wider than the middle part in order to easily guide the lower part of the support P. In this embodiment, the support part 3 is formed in a U-shape opening upward in the longitudinal direction of the first locking member 1, but in other embodiments, as long as it can support the lower part of the support pillar P such as an H-shaped steel, it can have any shape selected from at least a V-shaped or other concave shape opening upward in the longitudinal direction of the first locking member 1, an L-shape, a plate shape, a ring shape, a column shape, and a cylindrical shape. Furthermore, in this embodiment, the support part 3 is directly disposed on the side surface of the second locking member 2, but in other embodiments, it may be indirectly disposed on the second locking member 2 via another member as long as it is disposed on the side surface of the second locking member 2. In this embodiment, the pillar P is an H-shaped steel, but in other embodiments, it may be an I-shaped steel or a member having a shape such as a columnar, rectangular columnar, cylindrical, or square tube.

[0021] The first locking member 1, the second locking member 2, and the support part 3 are each preferably made of a highly rigid material, more preferably metal, and most preferably steel or iron, to support a pillar P such as an H-shaped steel beam and maintain the pillar P at a predetermined height.

[0022] A method of using the retaining-wall protective fence post support device of the present invention will be described below as shown in Figs.

[0023] As shown in FIG. 2, in constructing a retaining wall W at a site, a space for pouring concrete is first formed in a frame body F, and the first-stage concrete is poured inside the space, and the lower part of the first locking member 1 is embedded in the concrete pouring surface so that the longitudinal direction of the first locking member 1 is aligned vertically. Then, when the first-stage concrete hardens, the height at which the support P is exposed from the top surface of the retaining wall W that is finally formed is calculated, and the height at which the support P is suspended from the concrete pouring surface during the construction of the retaining wall W is adjusted while the first locking part 1 and the second locking part 2 are screwed together. After that, as shown in FIG. 3 and FIG. 4, the middle part at the lower part of the H-shaped steel support P is supported by the support part 3. Although not shown, it is of course preferable to support at least the middle or upper part of the support P with another member so that the support P does not fall when the support part 3 supports the support P.

[0024] Then, as shown in Fig. 5, from the state shown in Fig. 3 and Fig. 4, a space is formed in which concrete is further poured using the frame F, and a second stage of concrete is poured inside at least until the retaining-wall protective fence post support device of the present invention is embedded. After the retaining wall W is constructed in this manner, the post P is erected against the retaining wall W so as to be exposed at a predetermined height from the top surface of the retaining wall W. Note that, for ease of understanding, the first locking member 1 is embedded in the pouring surface of the first stage of concrete in Figs. 2 to 5, but it goes without saying that the first locking member 1 may be embedded in the pouring surface of the concrete in the second stage, third stage or later, depending on the height of the retaining wall W.

[0025] In this way, the retaining wall protective fence post support device of the present invention makes it easier to adjust the height at which the post P floats above the concrete pouring surface during construction of a retaining wall W when installing a retaining wall W in which the lower part of the protective fence post P is buried.

[0026] [ First reference form] 6(a) and 6(b), the retaining-wall protective fence post support device of this embodiment, like the first embodiment, comprises a first locking member 1, a second locking member 2, and a support part 3. The actions and effects of the first locking member 1, the second locking member 2, and the support part 3 are as described in the first embodiment, except for the differences from the first embodiment described below.

[0027] In this embodiment, as shown in Fig. 6(a)(b), the first locking member 1, the second locking member 2, and the support portion 3 are different in shape and structure from those of the first embodiment. Specifically, the first locking member 1 is a plate-like member having a first locking portion 11 as a female screw provided on the inner peripheral side of a plurality of through holes drilled at a predetermined interval along the longitudinal direction. The second locking member 2 is a plate-like member having a second locking portion 21 as a female screw provided on the inner peripheral side of two through holes in the vertical direction along the longitudinal direction of the first locking member 1. The first locking portion 11 and the second locking portion 21 are indirectly engaged with each other by screwing the first locking portion 11 and the second locking portion 21 into a bolt B having a male screw. The support portion 3 is a plate-like member extending at a right angle to the second locking member 2. The support portion 3 supports the lower part of the support P with the plate-like member. 2 to 5 in the first embodiment, when installing a retaining wall W in which the lower part of a guardrail support post P is buried, the retaining wall W's retaining wall post support device including the first locking member 1, second locking member 2, and support part 3 in this embodiment can easily adjust the height at which the post P is suspended above the concrete pouring surface during construction of the retaining wall W. In yet another embodiment, the first locking part 11 and the second locking part 21 are both through holes without screws, and a bolt of a separate member can be inserted into the hole and screwed in with a nut of a separate member, thereby indirectly engaging the holes.

[0028] [ Second reference form] 7(a) and (b), the retaining-wall protective fence post support device of this embodiment, like the first embodiment, comprises a first locking member 1, a second locking member 2, and a support part 3. The actions and effects of the first locking member 1, the second locking member 2, and the support part 3 are as described in the first embodiment, except for the differences from the first embodiment described below.

[0029] In this embodiment, as shown in Fig. 7(a)(b), the first locking member 1, the second locking member 2, and the support portion 3 are different in shape and structure from those of the first embodiment. Specifically, the first locking member 1 is a cylindrical member having a plurality of through holes drilled at a predetermined interval along the longitudinal direction as the first locking portions 11. The first locking portions 11 are drilled in pairs so as to face each other in the lateral direction. The second locking member 2 is a cylindrical member having two semicircular truncated cones, each of which has a protrusion protruding inward as the second locking portion 21. The first locking member 1 and the second locking member 2 are directly engaged with each other by fitting the second locking portions 21, which are protrusions, into the first locking portions 11, which are through holes. The support portion 3 is a protrusion extending from the side of the cylindrical holder H, which is a truncated cone that is held in contact with the outer circumferential side surface of the second locking member 2. The support portion 3 supports the lower portion of the support P with the protrusion. The support portion 3 in this embodiment is not provided directly on the side surface of the second locking member 2, but is disposed on the side surface of the second locking member 2, as in the first embodiment. Furthermore, the first locking portion 11 in this embodiment is a through hole, but in other embodiments, it may be a hole that does not penetrate as long as it engages with the second locking portion 21. The retaining wall protective fence post support device including the first locking member 1, the second locking member 2, and the support portion 3 in this embodiment can easily adjust the height at which the post P for the protective fence is suspended above the concrete pouring surface during construction of the retaining wall W when a retaining wall W in which the lower part of the post P for the protective fence is buried is installed, in the same manner as described with reference to Figures 2 to 5 in the first embodiment. [Explanation of symbols]

[0030] 1...First locking member 11. No. one Locking Part 2...Second locking member 21...Second locking part 3...Support part W···Retaining wall P... Prop F...Frame body B Bolt H···Holder

Claims

1. A first engaging member embedded in the retaining wall with its longitudinal direction aligned vertically; a second locking member having a second locking portion that engages with the first locking portion of the first locking member at a predetermined position along the longitudinal direction of the first locking member; A support part having at least one shape selected from a U-shape and a V-shape, the support part being disposed on the side surface of the second retaining member, supporting the lower part of the retaining wall protective fence support, and opening upward in the longitudinal direction of the first retaining member, Preparation, The first locking portion is a male screw provided on an outer peripheral side surface of the first locking member, The second locking portion is a female screw provided on an inner peripheral side surface of the second locking member, A retaining wall protective fence post support device, characterized in that the spacing between the openings on the open end side of the support part is formed so as to gradually widen toward the open end.

2. A retaining wall protective fence post support device as described in claim 1, characterized in that the retaining wall protective fence post is an H-shaped steel.

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