JP2010121304A - Guardrail protector - Google Patents

Abstract

Provided is a guardrail that can prevent a secondary disaster caused by vehicle bounce, reduce the material cost, and facilitate attachment to a column.
In a guardrail protector attached to a plurality of support posts 2 provided between a sidewalk and a roadway, an attachment member 3 attached to each support post 2 and a plurality of support posts via the attachment member 3 And a mesh member 4 that is attached across the ring. The mesh member 4 includes a plurality of rings 41 and a connecting member 44 that couples the rings 41. And, by configuring the guardrail 1 with the mesh body 4 in this way, rebounding at the time of a vehicle collision is prevented to prevent a secondary disaster, and even if the mesh body 4 is damaged, the damaged portion Only the ring 41 and the connecting member 44 can be exchanged.
[Selection] Figure 1

Description

  The present invention relates to a guardrail protector that can be manufactured at a low cost and can be easily attached to a support column. More specifically, the present invention relates to a method of absorbing an impact caused by a vehicle collision. The present invention relates to a guardrail protector that can be used.

  In general, a guardrail is configured by providing a plurality of pillars embedded in a road and a corrugated steel plate called a beam attached across the pillars. In addition, by forming the beam of the guardrail with a steel plate in this way, intrusion into the sidewalk side of the vehicle, or intrusion into the opposite lane side when provided in the central separation zone, and water by the traveling vehicle are prevented. It is designed to cut off splashes and noise.

  By the way, when the beam is constituted by the steel plate in this way, it is possible to prevent the vehicle from entering the sidewalk side or the opposite lane at the time of the collision of the vehicle, but the steel plate rebounds because the steel plate is hard, There is a possibility that a secondary disaster will occur, such as a vehicle that is bounced back and collides with another vehicle.

  On the other hand, in recent years, several guardrails have been proposed which have shock absorption properties in the event of a vehicle collision.

  For example, in Patent Document 1 below, as shown in FIG. 8, an elastic body 84 that protrudes from a bulging portion 83 on both sides in the width direction is fixed to a recess 82 in the center in the width direction of the beam 81. A guardrail 8 has been proposed. By configuring the guard rail 8 in this way, even when the vehicle collides with the guard rail 8, the vehicle is brought into contact with the elastic body 84 on the surface of the beam 81, and the impact force is absorbed to absorb the vehicle and the beam 81. I try to reduce the damage.

Further, in Patent Document 2 below, as shown in FIG. 9, a substantially Ω-shaped intermediate disposed between a plurality of columns 91 embedded in a road and a beam 92 spanned between these columns 91. There has been proposed a guardrail 9 that includes a spacer 93 and that is configured such that the intermediate spacer 93 is attached to the support column 91 and the beam 92 by a fastening bracket 94. And according to such a guardrail 9, even if it is a case where a vehicle collides with the guardrail 9, the intermediate spacing tool 93 provided between the column 91 and the beam 92 is plastically deformed, so that The collision energy is absorbed and dispersed.
JP 2001-98518 A JP 2004-156426 A

  However, although the guardrails described in these Patent Documents 1 and 2 can prevent secondary disasters due to rebounding, both have a structure in which a steel beam is bridged between struts. For this reason, the beam becomes heavy and it is very difficult to perform the installation work with a small number of people. In recent years, the price of metals has soared due to an increase in demand in emerging industrial countries. In such a situation, there has been a problem that it is very expensive to use a steel beam.

  Therefore, in order to solve the above problems, the present invention can prevent a secondary disaster caused by vehicle rebound, reduce the material cost, and facilitate the mounting work to the support column. The purpose is to provide a guardrail.

  That is, in order to solve the above problems, the guardrail of the present invention is a guardrail protector that is attached to a plurality of struts provided between a sidewalk and a roadway or in a central separation zone of the roadway. An attachment member to be attached and a mesh body attached across a plurality of support columns via the attachment member are provided, and the mesh body is configured by a plurality of rings and a connecting member that couples the rings. is there.

  In this way, it is not necessary to use a large amount of metal as in the case of a conventional steel beam, the cost for the material can be suppressed, and the mounting work to the support can be performed even by a small number of people by reducing the weight. It becomes like this. In addition, the impact of the vehicle can be absorbed by the mesh body, and secondary disasters associated with rebounding can be prevented. Noise absorption and greening can be achieved.

  Moreover, as a ring in such an invention, a metal member whose surface is coated with a flexible synthetic resin is used.

  In this way, when the vehicle collides, the impact force can be absorbed also by this flexible resin, and a secondary disaster accompanying the vehicle bounce can be prevented. Covering the ring with a flexible resin not only makes it easy to see the ring in a color that is easy to see at night, but it also rusts even when the ring is exposed to wind and rain. And discoloration can be prevented.

  Furthermore, when attaching a mesh body to support | pillars, a wire is attached ranging between support | pillars, and a mesh body is pulled with this wire to the direction between support | pillars and an up-down direction.

  In this way, it is possible to give tension to the mesh body, prevent bending due to wind or the like, and prevent damage due to contact with the traveling vehicle.

  Moreover, when providing a mesh body, the bending prevention member for preventing the mesh body from bending to the roadway side is provided.

  As one form of such an invention, there is a method of attaching a hook to the mesh body to give tension, or a wire is stretched from the sidewalk side of each column toward the center portion of the mesh body, and the mesh body is pulled by this wire. Use a method to prevent swelling on the roadway side. In this way, even when a strong wind blows, the bulge toward the roadway can be reliably prevented, and contact with the traveling vehicle can be prevented.

  According to the present invention, in a guardrail protector attached to a plurality of support posts provided between a sidewalk and a driveway or in a central separation zone of the driveway, an attachment member attached to each of the support posts, and the attachment member And a mesh body that is mounted across a plurality of support columns, and the mesh body is composed of a plurality of rings and a connecting member that couples the rings, so that a large amount of metal can be formed like a conventional steel beam. There is no need to use it, and the cost of materials can be reduced. In addition, since the weight can be reduced, a small number of people can perform the work of attaching to the column, and the net body can absorb the impact of the vehicle, so that it is possible to prevent a secondary disaster caused by rebounding. Furthermore, it is possible to prevent water splashing by the traveling vehicle, to absorb noise, and to make green spaces by making the mesh body wrinkled.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the structure of the guardrail 1 in this embodiment, and shows a front view seen from the sidewalk side. FIG. 2 shows a front view of the guard rail 1 in the same form as viewed from the roadway side, and FIG. 3 shows a cross-sectional view taken along the line AA of the column 2 of the guard rail 1. 4 and 5 show the structure of the mesh body 4 attached to the support 2.

  The guardrail 1 according to this embodiment is provided by removing the steel beam of the existing guardrail provided on the road and attaching it to the pillars 2. The attachment member 3 attached to each pillar 2, and these attachment members 3 And a mesh body 4 that is mounted across the plurality of support columns 2 via the support. Characteristically, the mesh body 4 is composed of a plurality of rings 41 and a connecting member 44 that couples the rings 41. Is provided. With this configuration, the impact at the time of a vehicle collision is absorbed, and the weight of the guard rail 1 is reduced, so that material costs and work costs can be reduced. Hereinafter, the structure of the guardrail 1 in this Embodiment is demonstrated in detail.

  The support 2 in the guardrail 1 is preferably one having its lower end embedded in the ground. As the other support columns 2, for example, a concrete block attached below can be used so that it can be installed at an arbitrary place. However, when the mesh body 4 is attached to such a support column 2, 4 may be unable to withstand the tension of 4, and the support column 2 may fall. However, in this case, it is preferable that the struts 2 and the concrete blocks on both ends are strongly fixed to the ground so that the net body 4 can withstand the tension.

  Generally, a mounting hole 21 for attaching a beam is provided on the side surface of such a support column 2, and the beam is attached to the mounting hole 21 through a bolt. The attachment hole 21 is usually provided across the side surface on the roadway side and the side surface on the sidewalk of the support column 2, and the mesh body 4 is attached using the attachment hole 21.

  The mesh body 4 constituting the guardrail protection body is attached between the pillars 2 via the attachment members 3 attached to the pillars 2. The attachment member 3 is configured by using an inverted L-shaped bracket 31 attached to the support column 2 and a wire 32 attached over the bracket 31 of the adjacent support column 2. Among these, the bracket 31 is fixed with a bolt through the mounting hole 21 already provided in the support column 2. In addition, a hooking hole 33 for attaching the wire 32 is provided on the lower surface of the portion provided so as to form a horizontal surface of the bracket 31, and the wire 32 is inserted into the hooking hole 33 so as to adjoin the supporting column. The wire 32 is bridged between the two. As the wire 32, for example, a wire made of a bundle of a plurality of wires such as iron so as to be able to withstand the load at the time of vehicle collision is used. In this embodiment, an inverted L-shaped bracket 31 is used as the bracket 31. However, the bracket 31 is not necessarily limited to such a shape, and a linear one that is attached across each support column 2 is used. May be. Further, the height of the bracket may be configured higher than that of the support 2.

  The mesh body 4 attached between the wires 32 of the attachment member 3 is constructed endlessly, and even if a part of the mesh body 4 is damaged, only the damaged part is replaced. Use what you can. Such a net 4 is shown in FIGS. The plurality of rings 41 constituting the mesh body 4 are formed by coating the surface of a metal member such as steel with a flexible synthetic resin such as rubber, and thus covering the surface of the metal member with rubber or the like. By doing so, the impact at the time of the collision of the vehicle is absorbed, and the damage to the vehicle at the time of the collision is eased. Further, by coloring this rubber white, it is possible to make the boundary portion with the roadway clear even during night driving and to prevent metal rust and the like by covering with rubber.

  The ring 41 configured as described above will be described in detail. As shown in FIG. 4, the ring 41 has four ears 42 equally spaced by 90 degrees in the outer circumferential direction. The adjacent ring 41 is connected using the provided two holes 43 and the connecting member 44 so as to constitute the mesh body 4.

  When the ring 41 is connected by such a hole 43, for example, as shown in FIG. 4, a U-shaped member 45 is attached to a pair of holes 43 in each ear 42, and a wire is connected via the U-shaped member 45. The connecting member 44 is fixed to the ring 41. By doing in this way, compared with the case where it attaches directly to the hole 43 through the linear connection member 44, the mesh body 4 does not wobble, and furthermore, the connection member 44 is provided only on one side surface side. Therefore, only the covering rubber can be positioned on the opposite side surface. In this way, since only the covering rubber of the ring 41 can be positioned only on one side surface side, it is possible to prevent the vehicle from being damaged by setting it on the roadway side. Of course, in this case, the U-shaped member 45 may slightly protrude to the roadway side, but the hole 43 of the ring 41 is recessed, and the U-shaped member 45 fits into the recessed portion so that the U-shaped member 45 protrudes. Can also be prevented.

  Further, as another method for connecting the plurality of rings 41, the hole 43 of one ring 41 and the hole 43 of another ring 41 adjacent thereto are overlapped and wound with a wire. You can also

  The mesh body 4 configured as described above is attached between the support columns 2 via the mounting member 3. When the mesh body 4 is attached to the support column 2, the mesh body 4 bulges toward the roadway due to the deflection of the mesh body 4. There is a possibility. For this reason, while pulling up and down with the wire 32 of the attachment member 3, the net | network body 4 is pulled also in the left-right direction so that bending may be eliminated. As a method of pulling the mesh body 4 in the vertical direction, for example, the vertical dimension of the mesh body 4 is slightly smaller than the interval between the upper and lower mounting members 3, and the mesh body 4 is applied by the tension of the wires 32 of the upper and lower mounting members 3. To pull. Moreover, as a method of pulling the mesh body 4 in the left-right direction, a deflection preventing member 5 as shown in FIG. 6 is used. As the bending preventing member 5, a member provided with a hook 51 hooked on the ring 41 of the mesh body 4 and an adjusting mechanism 52 for adjusting a gap between these hooks 51 is used. Then, the distance between the hooks 51 is shortened by tightening the screw that is the adjusting mechanism 52, and the mesh body 4 is pulled in the left-right direction to give tension. Such a deflection preventing member 5 is attached at an arbitrary position in the mesh body 4 and prevents the deflection by hooking the hook 51 to the hollow portion of the ring 41.

  Hereinafter, the attachment method of the mesh body 4 in the guardrail 1 comprised in this way is demonstrated.

  First, when using the guard rail protector configured by the mesh body 4, the steel beam on the existing guard rail is removed, and the mounting member 3 is mounted in the mounting hole 21 of the column 2. At this time, the attachment member 3 may be attached to the upper end portion of the support column 2 on the roadway side and to the lower end portion of the support column 2 at one place, or to prevent the net 4 from bending at the intermediate portion. Also, it is provided at the upper and lower intermediate positions of the column 2. And after attaching the attachment member 3 in this way, the endless net-like body 4 is prepared, the wire 32 is passed through the ring 41 at the upper end portion and the lower end portion thereof, and the wire 32 is inserted into the hanging hole 33 of the attachment member 3. Install and fix. This fixing method may be performed by welding or the like, or may be fixed by a fastener such as a bolt.

  Next, after attaching the mesh body 4 in this way, the deflection preventing member 5 is attached to an arbitrary location. As this attachment location, for example, a few places are attached to the intermediate point between the support column 2 and the support column 2 where bending is most likely to occur, and a screw which is an adjustment mechanism 52 between the hooks 51 is tightened to give tension.

  Then, a plant such as a cocoon is vegetated in the vicinity of the guardrail 1 constituted by the mesh body 4 in this way, and the guardrail 1 is covered with a bamboo leaf or the like.

  As described above, according to the above-described embodiment, the guardrail protector is configured by the mesh body 4 in which the ring 41 is connected, so that a large amount of steel beam is not used as in the prior art. The material cost can be suppressed, and the attachment work to the support column 2 can be performed even by a small number of people by reducing the weight. Moreover, since the impact of the vehicle can be absorbed by the mesh body 4, it becomes possible to prevent a secondary disaster caused by rebounding. Therefore, it is possible to prevent water splashing by the traveling vehicle, to absorb noise, and to make green space, and to prevent the net 4 from being bent by the vine.

  Further, since the mesh body 4 is constituted by the ring 41 and the connecting member 44, the ring 41 and the connecting member only at the damaged portion even when partly damaged due to collision or contact of the vehicle. This can be dealt with by simply exchanging 44, and can be easily repaired.

  In addition, this invention can be implemented in various aspects, without being limited to the said embodiment.

  For example, in the above-described embodiment, the mesh body 4 is configured by the plurality of rings 41 and the connecting member 44, but the ring 41 may be configured by using waste tires or the like. As such a waste tire, a tire having a small diameter (for example, a tire of a small motorcycle or a small automobile) may be used, or the tire may be cut into a ring 41 shape. Further, when such a waste tire is used, the waste tire may be passed through a vertically long glass fiber to constitute a net-like body.

  Moreover, in the said embodiment, although the bending prevention member 5 as shown in FIG. 6 is used as the bending prevention member 5, this can also be set as a structure like FIG.

  In FIG. 7, reference numeral 5 b denotes a wire 5 b that forms the deflection preventing member 5, and is stretched obliquely from the bolt on the sidewalk side of the support column 2 to the central portion of the mesh body 4. Such a wire 5b may be a metal wire or a rubber wire which gives tension. When this wire 5b is attached, even if the net 4 is swollen to the roadway side, the center portion is pulled back by the wire 5b, so that the swollenness can be prevented and contact with the vehicle can be prevented. Will be able to.

  Furthermore, in the said embodiment, although it comprised with the some ring 41 and the connection member 44 which connects this as the mesh body 4, it is not restricted to such a structure, A some mesh body 4 component is comprised. Any shape can be used as long as it can be connected by the connecting member 44. In this case, for example, the side surface on the roadway side is preferably made as flat as possible so that contact with the vehicle can be prevented as much as possible.

The external view when the guardrail in 1st embodiment of this invention is seen from the roadway side External view when the guardrail in the first embodiment of the present invention is viewed from the sidewalk side Side view of guardrail in same form The figure which shows the mesh body in the same form The figure which shows the ring of the mesh body in the same form The figure which shows the bending prevention member in the form The figure which shows the state which provided the bending prevention member in other embodiment. The figure which shows the guardrail in the conventional example The figure which shows the guardrail in the conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Guard rail 2 ... Post 21 ... Mounting hole 3 ... Mounting member 31 ... Bracket 32 ... Wire 33 ... Hanging hole 4 ... Net-like body 41 ... Ring 42 ... Ear part 43 ... Hole 44 ... Connecting member 45 ... U-shaped member 5 ... Deflection prevention member 51 ... Hook 52 ... Adjustment mechanism 5b ... Deflection prevention member ( wire)

Claims (4)

In the guard rail protector that is attached between the sidewalk and the roadway, or on multiple pillars provided in the median of the roadway,
An attachment member attached to each of the columns;
A net-like body attached across a plurality of support posts via the attachment member is provided,
A guardrail protector comprising the mesh body composed of a plurality of rings and a connecting member for connecting the rings.   The guard ring protector according to claim 1, wherein the ring is formed by coating a surface of a metal member with a flexible synthetic resin.   The guardrail protector according to claim 1, wherein the attachment member is formed of a wire straddling between the columns, and pulls the mesh body in the direction between the columns along the road and in the vertical direction.   The guardrail protector according to claim 1, further comprising a bend preventing member for preventing the net-like body from being bent.

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