JP2011231579A - Reinforcement structure for hollow column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement structure for hollow column that can reinforce firmly while securing the visibility.SOLUTION: The bottom of a hollow column 1 is reinforced by winding an adhesive impregnated aramid sheet 5 on a periphery 1a at the bottom of the hollow column 1, and a layer of an adhesive 7 created by infiltration through the aramid sheet 5 is formed on the aramid sheet 5. The hollow column 1 is reinforced and the visibility of the hollow column 1 is enhanced by applying a reflecting coating 9 on the adhesive 7 and attaching a lot of glass beads 3 to the reflecting coating 9.

Description

  The present invention relates to a hollow column reinforcing structure that reinforces a hollow column made of, for example, a steel pipe column such as a traffic sign pole, the lower end of which is buried in the ground and is erected on the ground.

  For example, a hollow column made of a steel pipe column or the like such as a traffic sign pole is usually erected on the ground with a predetermined length of the base end portion buried in the ground. Such a hollow column is a hollow cylindrical body, that is, a hollow cylindrical body.

  This hollow column has a fixed length part of the base end embedded in the ground and is securely fixed, but the lower part exposed from the ground, more specifically, the underground part embedded in the ground and the ground The lower part close to the border with the above-ground part tends to be easily damaged compared to other parts.

  In addition, traffic sign poles, which are hollow pillars, are generally installed near the road or on the boundary between the road for vehicles and the road for pedestrians so that the driver of the vehicle can easily see. In some cases, the visibility may not be sufficiently secured.

  In order to improve visibility, a method of winding a retroreflective tape around a pole or forming a reflective coating layer made of a resin containing spherical glass particles and highly reflective spherical particles on the outer peripheral surface of the pole has been conventionally proposed. (See Patent Document 1).

Japanese Patent No. 3925814

  Although the method described in Patent Document 1 described above can obtain a certain degree of visibility, the target pole is made of a flexible thermoplastic polyurethane elastomer, and can be bent even if a vehicle or the like collides. It can be restored to its original shape just by doing this, and damage due to collision is not considered.

  Therefore, for example, in a hollow column made of a steel pipe or the like, it is desired to reinforce such that the lower part has a certain degree of strength while ensuring visibility.

  The present invention has been made in view of the above, and an object of the present invention is to provide a hollow column reinforcing structure that can be reinforced firmly while ensuring visibility.

  In order to achieve the above object, a hollow column reinforcing structure according to claim 1 is a hollow column reinforcing structure for reinforcing a hollow column standing on the ground with a lower end buried in the ground, The gist of the present invention is to have an aramid sheet wound around the outer periphery of the lower part exposed from the ground, and glass beads attached on the wound aramid sheet and retroreflecting light from the outside.

  In the reinforcing structure of the hollow column according to claim 1, an aramid sheet is wound around the outer periphery of the lower portion of the hollow column, and glass beads are attached on the wound aramid sheet to retroreflect light from the outside. The lower part of the hollow column is reinforced with an aramid sheet, and the visibility to the hollow column can be improved by retroreflection of light by the glass beads. When the hollow column is applied to a traffic sign pole, it is reinforced with an aramid sheet. The durability of the traffic sign pole can be improved by the synergistic effect of improving the visibility by the glass beads, and the traffic safety can be remarkably improved.

  The hollow column reinforcing structure according to claim 2 is a hollow column reinforcing structure that reinforces a hollow column that is erected on the ground with a lower end portion buried in the ground, and is a lower column exposed from the ground of the hollow column. The gist of the invention is to have an aramid sheet wound around an outer periphery, an adhesive impregnated in the aramid sheet, and a glass bead attached on the aramid sheet impregnated with the adhesive and retroreflecting light from the outside. And

  In the reinforcing structure of the hollow column according to claim 2, an aramid sheet impregnated with an adhesive is wound around the outer periphery of the lower portion of the hollow column, glass beads are attached on the aramid sheet, and light from the outside is retroreflected. Therefore, the lower part of the hollow column is reinforced with an aramid sheet, and the visibility to the hollow column can be improved by retroreflection of light by glass beads, and when the hollow column is applied to a traffic sign pole, the reinforcement with the aramid sheet The durability of the traffic sign pole can be improved by the synergistic effect of improving the visibility with the glass beads and the traffic safety can be remarkably improved.

  The hollow column reinforcing structure according to claim 3 is a hollow column reinforcing structure that reinforces a hollow column that is erected on the ground with a lower end portion buried in the ground, and is a lower column exposed from the ground of the hollow column. An aramid sheet wound around the outer periphery, an adhesive impregnated in the aramid sheet, a reflective paint applied on the aramid sheet impregnated with the adhesive, and attached on the reflective paint, The gist is to have glass beads that retroreflect light.

  4. The hollow column reinforcing structure according to claim 3, wherein an aramid sheet impregnated with an adhesive is wound around the outer periphery of the lower portion of the hollow column, a reflective paint is applied on the aramid sheet, and glass beads are applied on the reflective paint. The hollow column is reinforced with an aramid sheet to retroreflect light from the outside, and the visibility of the hollow column can be improved by retroreflecting the light with glass beads. When applied to a pole, the durability of the traffic sign pole can be improved by the synergistic effect of the reinforcement by the aramid sheet and the improvement of the visibility by the glass beads, and the traffic safety can be remarkably improved.

  According to a fourth aspect of the present invention, there is provided a hollow column reinforcing structure including sand that is attached between the glass beads and fills the space between the glass beads.

  In the reinforcing structure of the hollow column according to claim 4, since sand is adhered between the glass beads and the space between the glass beads is filled with sand, for example, an aramid sheet provided at a lower portion of the hollow column, It is possible to improve the weather resistance of each member such as adhesion and reflection paint, and to prevent these members from being deteriorated by sunlight, rain, wind, snow or the like.

  According to the present invention, the aramid sheet is wound around the outer periphery of the lower part of the hollow column, the glass beads are attached on the wound aramid sheet, and light from the outside is retroreflected. In addition to being reinforced with aramid sheet, the visibility to the hollow column can be improved by retroreflection of light by the glass beads. When the hollow column is applied to a traffic sign pole, the reinforcement by the aramid sheet and the visibility by the glass beads are improved. Due to the synergistic effect of improvement, the durability of the traffic sign pole can be improved and the safety of traffic can be remarkably improved.

  In addition, according to the present invention, sand is attached between the glass beads and the space between the glass beads is filled with sand, so that, for example, an aramid sheet, an adhesive, a reflective paint, etc. The weather resistance of each member can be improved, and it can be prevented that these members are deteriorated by sunlight, rain, wind, snow or the like.

It is a figure which shows hollow columns, such as a pole for traffic signs, with which the reinforcement structure of the hollow column concerning one Embodiment of this invention was applied to the lower part. It is a fragmentary sectional view which shows the partial cross-section of the reinforcement structure of the hollow pillar shown in FIG. It is a figure for demonstrating the retroreflection of the light by the glass bead currently used for the reinforcement structure of the hollow pillar shown in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

  FIG. 1 is a view showing a hollow column such as a traffic sign pole in which a hollow column reinforcing structure according to an embodiment of the present invention is applied to the lower part. The hollow column 1 shown in the figure has a lower end embedded in the ground and standing on the ground, but the lower surface exposed from the ground has a recursion for improving the visibility of the hollow column 1. Many glass beads 3 that perform reflection are attached. The length of the hollow column 1 to which the glass beads 3 are attached, that is, the length from the ground is, for example, about 18 cm.

  More specifically, as can be seen from a part of the cross-sectional structure of the hollow column 1 shown in FIG. 2, the hollow column 1 has an aramid sheet 5 impregnated with an adhesive on the lower outer peripheral portion 1a so as to reinforce the lower portion. The adhesive 7 that has penetrated the aramid sheet 5 and formed on the aramid sheet 5 is formed in layers, and a reflective paint 9 is applied on the adhesive 7. Many glass beads 3 are attached on the top.

  The adhesive 7 was not formed as a layer of the adhesive 7 by being applied on the aramid sheet 5, but the adhesive 7 impregnated in the aramid sheet 5 oozes out on the aramid sheet 5. Is. That is, the aramid sheet 5 is impregnated with the adhesive 7 in advance, and the aramid sheet 5 is hollowed by winding the aramid sheet 5 pre-impregnated with the adhesive 7 around the outer periphery of the hollow column 1. The adhesive 7 is firmly fixed to the outer periphery of the pillar 1 and the adhesive 7 impregnated in the aramid sheet 5 oozes out on the aramid sheet 5 as shown in FIG. 2, and the adhesive 7 is formed in a layered manner. .

  As described above, instead of winding the aramid sheet 5 impregnated with the adhesive 7 around the outer periphery of the hollow column 1, first, the adhesive 7 is directly applied to the outer periphery of the hollow column 1, and then the adhesive 7 The aramid sheet 5 may be wound on the outer periphery of the hollow column 1. In this case, the aramid sheet 5 is securely fixed to the outer periphery of the hollow column 1, and the adhesive 7 directly applied to the outer periphery of the hollow column 1 is covered therewith. The aramid sheet 5 wound around is penetrated and comes out on the aramid sheet 5 and is formed on the aramid sheet 5 like a layer of the adhesive 7 as shown in FIG.

  As another method for fixing the aramid sheet 5 with the adhesive 7, first, the aramid sheet 5 is directly wound around the outer periphery of the hollow column 1, and the adhesive 7 is placed on the wound aramid sheet 5. In this case, the adhesive 7 applied on the aramid sheet 5 penetrates the aramid sheet 5 inward and reaches the outer periphery of the hollow column 1, that is, the aramid sheet 5 and the hollow column 1. Between which the aramid sheet 5 is fixed to the outer periphery of the hollow column 1. In addition, it cannot be overemphasized that the adhesive agent 7 apply | coated on the aramid sheet 5 is formed as a layer of the adhesive agent 7 as it is as shown in FIG.

  The glass beads 3 adhering to the reflective paint 9 are not densely adhered to the entire surface of the reflective paint 9, but are adhering with an appropriate variation interval. Since there is a suitable gap between the beads 3, sand 11 is attached to the gap between the glass beads 3 as shown in FIG. The weather resistance of the sheet 5, the adhesive 7, the reflective paint 9, etc. is improved. This weather resistance can prevent each member, such as the aramid sheet 5, the adhesive 7, and the reflective paint 9, from being deteriorated by sunlight, rain, wind, snow or the like.

  Since the aramid sheet 5 is wound around the lower part of the hollow column 1 having the reinforcing structure configured as described above, the strength of the lower part can be remarkably improved. Therefore, when the hollow pillar 1 reinforced with the aramid sheet 5 is applied to a traffic sign pole, the traffic sign pole is simple even if a vehicle hits the lower part of the traffic sign pole. Will not be damaged.

  Further, as described above, by attaching a large number of glass beads 3 that perform retroreflection on the reflective paint 9 applied to the outer surface of the lower part of the hollow column 1, an external light incident on the glass beads 3 is attached. As shown in FIG. 3, the light is retroreflected at the bottom of the glass beads 3 in the same direction as the incident direction. Therefore, when the hollow pillar 1 with the glass beads 3 attached to the lower outer surface is applied to the traffic sign pole in this way, the vehicle headlight hits the lower part of the traffic sign pole at night, etc. When the light enters the glass beads 3, the retroreflected light from the glass beads 3 travels toward the vehicle driver and is surely seen by the driver, so that the driver can know the presence of the traffic sign pole. In addition to preventing the vehicle from hitting the traffic sign pole, safe driving can be performed based on the traffic sign.

  That is, in the hollow column 1 to which the hollow column reinforcement structure of the present embodiment is applied, the hollow column 1 is improved by the synergistic effect of the reinforcement by the aramid sheet 5 and the improvement of the visibility using the retroreflection of light by the glass beads 3. When the hollow column 1 is applied to a traffic sign pole, the safety of traffic can be remarkably improved.

  In the above embodiment, the glass beads 3 are attached on the reflective paint 9 to perform retroreflection, but the present invention is not limited to this. For example, the glass beads 3 are reflected on half of the glass beads 3 themselves. A paint may be applied and the glass beads 3 may be randomly attached on the aramid sheet 5. Applying the reflective paint to half of each glass bead 3 itself means applying the reflective paint only to the half of the spherical body of the glass bead 3, that is, the hemispherical part, which fixes a large number of glass beads 3 on a plane. Thus, the reflective paint can be applied only to half of the spherical body of the glass beads 3 by spraying the reflective paint by spraying only from above the many glass beads 3 arranged side by side. Further, when the glass beads 3 are randomly attached on the aramid sheet 5, half of the spherical body to which the reflective paint of the glass beads 3 is not applied, that is, the spherical body to which light is incident without being applied with the reflective paint. Half of them can be in various directions, for example, about half of them can face outward, and light from the outside can be retroreflected to achieve the above-described function.

1 hollow column
3 Glass beads 5 Aramid sheet 7 Adhesive 11 Sand

Claims (4)

A hollow column reinforcing structure that reinforces a hollow column standing on the ground with its lower end buried in the ground,
An aramid sheet wound around the outer periphery of the lower part exposed from the ground of the hollow column;
A hollow pillar reinforcing structure comprising: glass beads attached on the wound aramid sheet and retroreflecting light from the outside. A hollow column reinforcing structure that reinforces a hollow column standing on the ground with its lower end buried in the ground,
An aramid sheet wound around the outer periphery of the lower part exposed from the ground of the hollow column;
An adhesive impregnated in the aramid sheet;
A hollow column reinforcing structure comprising: glass beads which are attached on an aramid sheet impregnated with an adhesive and retroreflect light from the outside. A hollow column reinforcing structure that reinforces a hollow column standing on the ground with its lower end buried in the ground,
An aramid sheet wound around the outer periphery of the lower part exposed from the ground of the hollow column;
An adhesive impregnated in the aramid sheet;
A reflective paint applied on the aramid sheet impregnated with the adhesive;
A hollow pillar reinforcing structure comprising: glass beads attached on the reflective paint and retroreflecting light from the outside.   The hollow column reinforcing structure according to any one of claims 1 to 3, further comprising sand that is attached between the glass beads and fills the space between the glass beads.

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