JPH07279129A - Method for preventing fall of road side wall material, device therefor, and jig therefor - Google Patents

Abstract

PURPOSE:To surely hold a road side wall member without breaking of a rope tool even to a high impact load and realize an improvement in housing property of an excessive length part into a tie-in part and its drawing property at collision occurrence, thereby attaining the enhancement in reliability and holding of beautiful appearance by the extermination of a secondary accident resulted from the fall of the road side wall member. CONSTITUTION:In a method for preventing the fall of a road side wall member 4 for engagingly locking the road side wall member 4 such as sound insulating panel to a strut 3 by a rope tool 5 such as a wire rope, thereby preventing the fall of the road side wall member 4, the rope tool 5 has an excessive length part 5A having a length of about 4m sufficient to absorb the impact energy added to the road side wall member 4 at vehicle collision and resist the impact energy at the free fall of the road side wall member 4 to support the road side wall member 4 in the suspended state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road, especially a side wall material such as a soundproof wall provided on both sides of an elevated road, when the side wall material is damaged due to a car accident or the like. A road sidewall material fall prevention method for preventing a fall to a private house or the like to cause a secondary disaster, a road sidewall material fall prevention device suitably used for implementing the method, and a method for directly implementing the method The storage jig used.

[0002]

2. Description of the Related Art As shown in FIG. 7, the conventional road side wall material fall prevention is performed in the following manner. That is, the support columns 3 made of H steel are erected at a predetermined interval and the adjacent support columns 3 are
When assembling a road side wall by stacking two or more side wall members 4 which are normally realized by a soundproof panel having a height of 500 mm and are stacked, first, a cut provided at a lower portion of the H steel column 3 is used. Rigging 5 realized by wire rope in the notch 20
After passing through, drop the soundproof panel 4 in order, at that time,
A top end plate in which the wire ropes 5 are stacked while passing through the holes provided in the side portions of the soundproof panel 4, and finally, the sleeves 10 fixed to both ends of the wire ropes 5 are fixed to the tops of the H steel columns 3. It has been established at 8. In this case, the wire rope 5 used has a margin length of about 500 mm, and if the wire rope 5 is, for example, stacked in three stages (total height of the soundproof panel 4 = 1500 mm), a wire rope having a total length of about 3500 mm is used.

[0003]

According to such a conventional method, when an automobile collides with the soundproof panel 4 and is damaged, the soundproof panel 4 pops out in the Y direction in FIG. It will be out of 3. At this time,
Considering the size of each car that is generally popular, if the margin length is about 500 mm, the protrusion margin amount of 500/2 = 250 mm can be secured, and the soundproof panel 4 does not drop and is suspended in the air. It has been empirically proved that it is retained in the air conditioner, and it was said that the purpose of fall prevention was achieved for the time being.

Recently, however, the size of the vehicle has increased, and collisions with heavy vehicles including special vehicles for construction work have occurred. In the conventional method, the collision load is often directly applied to the wire rope 5. Then, the wire rope 5 often breaks with the above margin, and as a result, there is a problem that the soundproof panel 4 falls and frequently causes an accident that causes a secondary disaster. In such a conventional method, since the wire rope 5 is bent in a U shape and set at the joint between the H steel column 3 and the soundproof panel 4, it is necessary to make the margin longer than that of the joint. It may be exposed to the outside and hang down, which is not aesthetically pleasing, or the excess length part may not be pulled out smoothly and may be caught in the middle.On the other hand, make the wire rope strong enough to withstand the collision load. In such a case, there is a problem that the diameter becomes large and it becomes difficult to perform the setting process to the mating portion.

The present invention has been made to solve the above problems, and an object of the present invention is to suspend road side wall materials without breaking the rigging even under a high collision load. By holding it securely, and by improving the storability of the extra length part in the mating part and the withdrawal property in the event of a collision, it is possible to improve reliability and maintain aesthetics by eradicating secondary disasters. (EN) Provided is a road side wall material falling prevention method and device, and a jig exclusively used for the device.

[0006]

The present invention has the following constitution in order to achieve the above object. That is, the present invention relates to a method for preventing a road side wall material from dropping by locking a road side wall material such as a soundproof panel to a pillar for the side wall material by a rigging such as a wire rope. In addition, it has a sufficient length to absorb the impact energy applied to the road side wall material at the time of a vehicle collision, and to withstand the impact energy when the road side wall material falls freely to support the road side wall material in suspension. This is a method for preventing falling of falling material on a side wall of a road.

According to the present invention, a road side wall material such as a soundproof panel, which is installed by bridging between pillars erected on the side of a road, is locked to the pillar by a rope such as a wire rope. A device that prevents the material from falling,
The impact energy applied to the road side wall material at the time of vehicle collision is absorbed, and the surplus length part that can withstand the impact energy when the road side wall material falls freely and supports the road side wall material in suspension is provided in the middle part. The rigging includes the rigging provided, a top end plate fixed to the top of the column, and a suspending member fixed to the side surface of the road side wall material. It is wound and stored in a substantially elliptical shape that can be spread in a storage jig, and is stored in a space formed at the joint between the pillar and the road side wall material, while being connected to this extra length portion. One of the extension portions is directly fixed to the top end plate, and the other is fixed to the top end plate after being inserted into the ring portion of the suspension member, and the road side wall material fall prevention device. Is.

Further, the present invention is characterized in that the extra length portion of the rigging is stored in a space portion provided on one side portion of the road side wall material stacked between the columns. It is a side wall material fall prevention device. The present invention is also a storage jig for storing the extra length portion of a rigging that is aligned and wound in multiple layers in a substantially elliptical shape that can be spread, and has a groove into which the rigging that is aligned and wound can be inserted. A pair of case members of the same shape made of the lip groove type material having, and a connecting member made of a flat band member such as a band steel, and supporting the case members in a coaxial relationship at a predetermined interval,
This connecting member is a storage jig characterized in that hook portions that can be elastically inserted and held so as not to pull out the bottom portion of the case member facing the lip portion are provided at both ends.

[0009]

According to the present invention, the rigging is passed through the ring portion of the suspension member fixed to the side surface portion of the road side wall material, and the extra length portion is provided at the connecting portion between the prop and the road side wall material. The road side wall material that is to be dropped in the vertical direction due to damage due to a vehicle collision is stored in the formed space portion and both ends are fixed to the top end plate that is fixed to the top of the pillar. It can be suspended and supported to prevent its fall. In this case, since the extra length of a predetermined length is provided, a large collision energy due to a vehicle collision does not directly load on the rigging, and therefore a small dynamic load is added to the weight of the road side wall material. A rigging having a strength capable of withstanding the applied load energy is sufficient, and a thin rigging similar to the conventional one is sufficient. In addition, the extra length in this case is appropriately about 4 m,
According to the Road Law, the length of the overhang outside the road is 2 m.
There is a sufficient basis when considering the following points, and when the road side wall material is pushed out by the overhanging object and jumps out by 2 m, the length that the rigging can extend without resistance without resisting this This is the reason why about 4 m is selected.

According to the present invention, the extra length portion of the rigging is preliminarily stored in a substantially elliptical shape that can be wound in multiple layers in a line and can be spread in the storage jig to connect the pillar and the road side wall material. It is stored in the space formed in the section. In this way, the extra length portion is housed in a substantially elliptical shape so as not to be bent at an acute angle by aligned winding, so that the respective strip ends at both ends of the coil portion are in a state of being flush with each other. In the event of a collision accident, when stretched in both directions by being pulled by the road side wall material, the rigging is pulled out smoothly and smoothly without being entangled or bent, and the high collision energy associated with a vehicle collision is directly applied to the rigging. It is possible to carry only a comparatively small collision energy due to the vertical drop.

Further, according to the present invention, by storing the extra length portion in the storage jig, the shape is not lost during transportation to the road construction site, and the shaping process such as coiling at the work site can be performed. It is not necessary at all and simplifies on-site work as well as stabilizes the shape of the extra length. Further, a space portion whose extra length portion is formed at the joint between the support pillar and the road side wall material, particularly a space portion provided on one side of the road side wall material stacked between the support pillars is used. Since it is stored as a storage device, it fits well, and since it is not exposed to the outside from the road wall, it does not impair the external appearance.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of the exterior of a road side wall according to an embodiment of the present invention. This road side wall is a concrete balustrade 2 which is integrally provided on the side of the road surface 1,
On this concrete railing 2 a predetermined interval, for example 2000
Formed on the side wall of a structure similar to the conventional one by the pillars 3 made of H steel vertically erected vertically at mm intervals, and the road side wall material 4 realized by the soundproof panel bridged between the pillars 3. To be done. The soundproof panel 4 has an appropriate length such that the width of the soundproof panel 4 can be dropped between the grooves of the columns 3 adjacent to each other, and has a height of about 500 mm and a thickness of about 90 mm. Are mounted between the columns 3 in a three-tier stack, for example. The soundproof panel 4 is provided with a space portion 6 for accommodating an extra length portion 5A of the rigging 5, which will be described later, in the first soundproof panel at least at the bottom of the three steps. This space portion 6 is recessed on one side of the soundproof panel 4 over the entire height and has a depth of about 60 mm.
A void of x90x60 mm is formed. On the side surface of the soundproof panel 4, a suspension member 7 realized by, for example, an eyebolt is firmly fixed to a panel side plate made of metal by welding, nut tightening, or the like. The space portion 6
Can be provided on at least one of the assembling parts as long as the pillar 3 and the soundproof panel 4 are assembled together.

A top end plate 8 made of a thick metal plate is integrally fixed to the column 3 by welding, tightening nuts or the like on the top of the column 3. This top plate 8 is a cord 5
Two elongated holes 11 for fixing the sleeve 10 which is crimped to both ends of the are formed. The elongated hole 11 has a conventionally known structure, and has an elongated hole having a width corresponding to the diameter of the rope portion of the cord 5, and a round hole provided in the center of the elongated hole and into which the sleeve 10 is inserted. Have.

A rigging 5 which is realized by a wire rope is provided at the connecting portion where the support column 3 and the soundproof panel 4 are assembled. The wire rope 5 is provided in association with the space portion 6, the eyebolt 7, and the top end plate 8, and these constitute a road side wall material fall prevention device. As the wire rope 5, a steel wire rope having a diameter of 6.3 mm and a length of about 7 m is used, and an extra length portion 5A is provided in the middle portion.
Is formed by coiling, and sleeves 10 having a diameter larger than that of the rope are fixed to both ends of the rope by crimping or welding. In the wire rope 5 thus formed, the extra length portion 5A is accommodated in the space portion 6 in a state where the extra length portion 5A is accommodated in the accommodation jig 9 by the substantially elliptical multilayer alignment winding, and the extra length portion 5 is formed.
After inserting both end portions continuous to A into the ring portion of the eyebolt 7 attached to the soundproof panel 4 of each step, extend through the connecting portion to the top end plate 8, and one of the long holes The sleeve 10 of the terminal portion is fixed by 11 and the other is passed through a notch or hole 20 provided in the lower portion of the support column 3 and then extended to the top plate 8 through the connecting portion, and the other long hole 11 The sleeve 10 of the terminal part is fixed by. In this way, the wire rope 5
It is set in the mating portion so that it cannot be seen from the outside inside the road wall. This set state is as schematically shown in FIG. 2 in which the main part of FIG. 1 is enlarged.

FIG. 3 is a perspective view showing the assembled state of the storage jig 9, and FIG. 4 is a perspective view showing the disassembled state. The storage jig 9 includes a pair of case members 12 having the same shape,
It is formed by one connecting member 13. Case material 12
Is the extra length portion 5 of the wire rope 5 that is wound in multiple layers.
It is made of a plastic lip groove type member having a groove 15 into which A can be inserted, while the connecting member 13 is made of a metal flat band member such as a band steel, and the case members 12 are coaxial with each other at predetermined intervals. It is used as a support material to support This connecting member is provided with hooks 14 at both ends capable of elastically inserting and holding the bottom portion of the case member 12 facing the lip portion, and as shown in FIG. When the bottom portion is press-fitted into the hook portion 14, it cannot be easily pulled out.

Next, various experiments were carried out on the state of storability and withdrawability of the wire rope 5 with respect to the extra length portion 5A, based on the examples according to the present invention and the comparative examples illustrated for performance comparison. The following experimental results were obtained. In FIG. 5, the present embodiment is shown in (d) from the left in a perspective view, a front view, and a plan view.
Four comparative examples are similarly shown in (c) and (e) in a perspective view, a front view and a plan view. The material of each jig was made of synthetic resin, and the thickness was set to t = 6 mm in consideration of the fact that the rib did not bend. Here, the conditions of the experiment are as follows. Extra length 5A of wire rope 5 is 4m long
The coil was formed into an approximately elliptical shape with a length of mm and a major axis of 450 mm, and was wound into an aligned winding in which the coil ends of four layers are aligned in the same plane. Using the wire rope 5 having such an extra length portion 5A, the extra length portion 5A was stored in each storage jig as shown in FIG. 5, and the storability of the rope was confirmed. Regarding the drawability,
Using the experimental apparatus shown in FIG. 6, the drawability of the extra length portion 5A was confirmed.

In this experimental apparatus, a horizontal base 16 on which two soundproof panels 4 are mounted side by side and fixed horizontally, and a weight 1 attached to the wire rope 5 and having a weight of about 20 kg.
7 and a pulley 18 for allowing the weight 17 to freely fall or to be lifted, and the extra length portion 5A has a weight of about 2
The weight of the weight 17 of 0 kg functions to pull it out straight in the horizontal direction. The evaluation results of the experiments conducted under such conditions are as shown in the following "Table 1". Regarding the storability, in consideration of the mountability and storability of the jig, the present embodiment (d) Was the best. On the other hand, regarding the draw-out property, it is important that the coil is wound in an aligned manner, and in a winding method in which the ends of the coil are not flush with each other, the coils may intersect and the extra length portion 5A may not be pulled out. It was There was no damage to the jig after it was pulled out. In the case of the weight 17 of 20 kg, and also in the case of the static load drawn out by the experimenter,
(A), (d), (e) It was possible to withdraw in each case.

As is clear from the evaluation of "Table 1," the present example gives the best results when the mountability to the rope, storability, withdrawability, and morphological stability are comprehensively evaluated. It was proved that it can be easily set on the road site, and that the extra length 5A can be pulled out smoothly when the soundproof panel falls, and the secondary disaster can be prevented surely.

[0019]

[Table 1]

[0020]

As described above, according to the present invention, when a large vehicle, a special vehicle, or the like causes an accident, even if the vehicle collides with the side wall material of the road, the extra length of the rigging is Space that is formed in the joint part that absorbs the impact energy applied to the road side wall material and is long enough to withstand the impact energy when the road side wall material falls freely and support the road side wall material in suspension. Since it is compactly stored in the part, it can be pulled out smoothly for a predetermined length without breaking the wire while absorbing impact energy, and it is possible to reliably prevent the road side wall material from falling and to eradicate secondary disasters and improve reliability and reliability. It's very safe, but it's a huge amount.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outer appearance of a road side wall according to an embodiment of the present invention.

FIG. 2 is a perspective view schematically showing an enlarged main part of FIG.

FIG. 3 is a perspective view showing an assembled state of a storage jig 9 according to an embodiment of the present invention.

4 is a perspective view showing an exploded state of the storage jig 9 shown in FIG.

FIG. 5 is a structural explanatory view of a storage jig according to an embodiment of the present invention used in a performance experiment and respective storage jigs for comparison and comparison.

FIG. 6 is a schematic structural diagram of an experimental device used for a performance experiment.

FIG. 7 is an explanatory view showing an outline of a conventional road side wall material fall prevention structure.

[Explanation of symbols]

1 ... Road surface, 2 ... Concrete balustrade,
3 ... stanchions, 4 ... road side wall material, 5 ... rigging,
5A ... extra length part, 6 ... space part, 7
... Hanging member, 8 ... Top plate, 9 ... Storage jig, 10 ... Sleeve, 11 ... Long hole,
12 ... Case material, 13 ... Connection material,
14 ... Hook, 15 ... Groove,

Claims (4)

[Claims] 1. A method for preventing a road side wall material from dropping by locking a road side wall material such as a soundproof panel to a column for the side wall material by a rigging such as a wire rope. , It absorbs the impact energy applied to the road side wall material at the time of a vehicle collision, and withstands the impact energy when the road side wall material falls freely, and has a sufficient length to support the road side wall material in suspension. A method for preventing falling of falling material on a side wall of a road. 2. A road side wall material is dropped by locking a road side wall material such as a soundproof panel, which is installed by bridging between pillars erected on the side of the road, with the pillar by a cord such as a wire rope. It is a device for preventing the impact energy applied to the road side wall material at the time of a vehicle collision and supporting the road side wall material suspended in the air while enduring the impact energy when the road side wall material falls freely. The rigging includes a rigging having a sufficient extra length portion provided in an intermediate portion, a top end plate fixed to a top portion of a column, and a hanging member fixed to a side surface portion of the road side wall material. The extra length portion is aligned and wound in multiple layers and is stored in a substantially elliptic shape that can be spread in a storage jig, and is also stored in a space portion formed at a connection portion between the support column and a road side wall material. On the other hand, both extension parts connected to this extra length part are A road side wall material fall prevention device characterized in that it is directly fixed to a plate, and the other is fixed to a top plate after being inserted into an annulus of a hanging member. 3. The extra length portion of the rigging is stored in a space portion provided on one side portion of the road side wall material stacked between the support columns. Road side wall material fall prevention device. 4. A storage jig for accommodating the extra length portion of a rigging layered and wound in a multi-layered manner in a substantially elliptical shape, the groove having a groove into which the rigging lined and wound can be inserted. A pair of case members of the same shape made of the lip groove type material having, and a connecting member made of a flat band member such as a band steel and supporting the both case members in a coaxial relationship at a predetermined interval. A storage jig, characterized in that hook portions which can be elastically inserted and held so as not to pull out the bottom portion facing the lip portion are provided at both ends.