JP3499468B2 - Road noise barrier - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulation wall for a road installed on a highway or the like.

[0002]

2. Description of the Related Art On a highway or the like, a large amount of noise is generated as a vehicle travels at high speed, and the environment around the road is damaged. As a countermeasure against this, a sound insulation wall has been implemented by using a sound insulation panel in the shoulder area of the road. As such a sound insulating panel, there are a so-called sound absorbing type in which a sound absorbing material is covered with a zinc iron plate and an aluminum plate, and a light transmitting type using a transparent synthetic resin plate having a sound insulating property.

Since the sound insulation wall using the translucent type panel can see the scenery on the side of the road through the panel, it has an advantage of giving a feeling of openness and not giving a driver a feeling of oppression. It tends to be used widely. The lateral connection of such translucent sound insulation walls is generally shown in FIG.
As shown in (a), a translucent panel p is provided on the back surface of the flange of the pillar a made of H-shaped steel, which is erected at intervals corresponding to the width of the panel.
Position both sides of p and fix the L-shaped plate b to the web of the support a and fix it with bolts or nuts, or, as shown in FIG. 6 (b), overlap the lateral ends of the translucent panels p and p. , A vertical plate c is arranged on the road side, and a pillar d made of □ shaped steel cross section is arranged on the opposite road side. The pillar d and the vertical plate c are bolted through the panel overlapping part and the nut behind the pillar. A structure of tightening and fixing was adopted.

However, in these structures, the width is 2
Since the pillars a are erected on each panel of about 000 mm, there are many materials and materials, labor is required for construction, and the construction cost is high, and the flange surface of H-section steel with a width of 100 mm or more at intervals of 2000 mm or The vertical plate surface faces the road side, and these are opaque vertical bands that are visible to the driver and passengers of the vehicle traveling on the road side. Was diminished and the landscape was damaged. The latter also has a problem that since the ends of the translucent panels are overlapped with each other, a step is generated and the appearance is deteriorated.

[0005]

SUMMARY OF THE INVENTION The present invention was devised to solve the above-mentioned problems, and its purpose is to make the structure and construction simple and to make full use of the translucency. The present invention is to provide a sound insulation wall for roads which can maintain a good landscape and can reduce the construction cost by reducing the number of columns.

[0006]

In order to achieve the above object, the present invention is a sound-insulating wall formed by laterally connecting translucent sound-insulating panels along a side portion of a road. The panel has bent portions that extend toward the opposite road side at the end portions in the width direction, the bent portions are overlapped with each other, and a frame member having a groove-shaped cross section is externally fitted, and the frame member and the bent portion are in the thickness direction. It is characterized by being joined with a fastener. More preferably, the lower end region of the translucent panel is supported and fixed by a base portion having a base plate, a front side plate, and a pair of back side plates. In this case, the lower end of the translucent panel is located on the base plate, the front side plate is positioned so as to extend over the left and right translucent panels, and the back side plates are located on both sides of the base end of the bent portion. It is preferable that the side plate is fastened by a fastening metal fitting that penetrates the translucent panel.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show a first embodiment of a road sound insulation wall according to the present invention. 1, 1 is a translucent panel, which is generally 1500 to 3500 mm in height and 150 in width
It is made of a transparent synthetic resin plate of 0 to 4000 mm. Examples of the synthetic resin include polycarbonate and acrylic, but the latter is more preferable in terms of mechanical strength, durability, sound insulation, recyclability, and the like. The translucent panel may be colored in any color, and the reinforcing cords 9 made of nylon or the like are embedded in the interior at required intervals in order to suppress scattering of fragments when a strong impact is applied. . As shown in FIGS. 2 (a) and 2 (b), a bent portion 10 is formed at an edge portion in the width direction of the translucent panel 1, 1 in a direction perpendicular to the plate thickness.
A plurality of through holes 10 are formed in the bent portion 10.
0s are provided at required intervals. In addition, at least one through hole 101 for fixing by a base body described later is formed near the lower end of the main portion near the base end of the bent portion 10. Adjacent translucent panels 1 and 1 are shown in FIG.
As shown in (a), the bent portions 10, 10 are arranged so as to face the back, that is, the opposite road side, and the surface portions of the bent portions 10, 10 are in contact with each other or through a thin Teflon sheet or a rubber sheet. There is.

Reference numeral 2 denotes a frame member having a substantially U-shaped cross section, and the groove width is substantially equal to the total thickness of the two bent portions 10 and 10. The frame member 2 is appropriately selected from a metal such as a plated steel plate, a stainless steel plate, or an aluminum plate that is pressed, or an extruded material. In this example, in order to improve the through-hole property, the frame member 2 having a relatively short height is used, and the pair of side wall portions have a through-hole that matches the through-hole 100 of the translucent panel 1. A hole 20 is provided.

Reference numeral 3 denotes a base body, which includes a base plate 3a installed by anchor bolts on the road shoulder of the sound insulation wall installation area, and a front surface plate 3b having a reinforcing vertical plate 30 and having a required height (for example, 100 to 300 mm). The required height (eg 100
˜300 mm) and a pair of back side plates 3c, 3c. The back side plates 3c, 3c are abutted on the left and right translucent panels 1, 1 in the vicinity of the proximal ends of the bent portions,
The lower end portion including the lower end of the reinforcing vertical plate 31 is fixed to the base plate 3a by welding or the like. The through holes 101 of the translucent panel 1 are formed in the back side plates 3c, 3c.
The through holes 302 are formed at the positions corresponding to. The front surface side plate 3b includes the left and right translucent panels 1, 1
Has a width dimension capable of abutting the required width of the end of the base plate 3a, and in this embodiment, it is configured as a member independent of the base plate 3a. Further, through holes 301, 301 corresponding to the through holes 101 of the translucent panel 1 are formed in the left and right portions of the front surface side plate 3b.

The lower ends of the translucent panels 1 and 1 are placed on the base plate 3a, and the vicinity of the base end of the bent portion facing the road side is brought into contact with the rear side plates 3c and 3c, respectively, and positioned. In this state, the front surface side plate 3b is attached so as to straddle the ends of the translucent panels 1, 1, and the tightening bolts 4 are inserted through the through holes 301, 101 in the aligned state, so that the rear surface side plates 3c, 3c Through hole 302,
The lower portions of the translucent panels 1 and 1 are clamped and fixed in the plate thickness direction by screwing nuts 4 ′ and 4 ′ onto bolt ends protruding from 302.

The frame members 2, 2 and 2 are fitted onto the overlapping bent portions 10 and 10 of the translucent panels 1 and 1, and the bolt 5 is inserted into the communicating through holes 20 and 100. By being inserted and screwed into the nut 5 ', the translucent panel 1,
1 are integrally connected. Reference numeral 6 is a support plate for the lower end edges of the translucent panels 1, 1, which is in the shape of an angle and whose lower side is fixed to the base portion by anchor bolts.

Reference numeral 7 designates a support which is erected on the road shoulder for each of a plurality of translucent panels 1 and 1, for example, 3 to 10, and is made of H-shaped steel in this example. The widthwise ends of the translucent panels 1 and 1 corresponding to the support 7 are straight with no bent portions, and like the conventional translucent panel, the back surface of the support 7 (in this example Is located on the rear surface of the flange), and is fixed by a fixing member 70 so as not to move back and forth.

FIG. 4 shows a second embodiment of the present invention. In this example, the frame member 2 has a height (length) corresponding to substantially the entire height of the translucent panels 1 and 1, and A plurality of through holes 20 are provided at intervals corresponding to 100 of the panel 1.

The above are some embodiments of the present invention, and the present invention is not limited to these embodiments and various modes can be adopted. For example, the lowermost frame member 2 of the first embodiment or the lower portion of the frame member of the second embodiment may be fixed to the base plate 3a by welding or the like in some cases. The back side plates 3c, 3c may be independent of the base plate 3a, and the front side plate 3b may be fixed to the base plate 3a together with the reinforcing vertical plate 30 by welding or the like.
In some cases, the frame member 2 may have an E-shaped cross section as shown in FIG. In this case, a through hole is also provided in the intermediate rib (partition) 2a. In the case of this example, a gap corresponding to the thickness of the rib is formed between the bent portions 10, 10. The gap may be appropriately filled with elastic sheets.

[0015]

In the present invention, the bent portion 10 is preferably formed when the panel is manufactured. This can be obtained by heating the end of the translucent panel 1 and processing it with a press or the like. If you want to get a fitting in the field,
The left and right translucent panels 1, 1 are placed on the base plate 3a so that the bent portions 10, 10 are in surface contact with each other, and the back side is brought into contact with the back side plates 3c, 3c, and the front side plate 3b is attached. It is brought into contact with the front surface of the translucent panel 1, 1. Then, the through holes 300, 10 in which the front surface side plate 3b, the translucent panel 1 and the rear surface side plate 3c are aligned with each other.
Insert the tightening bolt 4 into the 0, 301 and insert the nut 4 '.
Screw together. The left and right translucent panels 1 and 1 increase the effective supporting surface by the bent portions 10 formed integrally at the edge portions, and are firmly supported and fixed by being sandwiched by the base portion body 3 from the front and rear. Translucent panel in case of collision
The fall of 1 is prevented. Therefore, it is possible to significantly reduce the number of columns, and thereby to simplify the construction and reduce the cost. Then, after this or before supporting and fixing to the base body 3, the translucent panels 1, 1
The frame member 2 is externally fitted to the bent portions 10 and 10, and the bolt 5 is inserted through the through holes 100, 20 and 20 at the aligned position, and the nut 5 ′ is screwed and tightened to tighten the left and right translucent panels 1. , 1 can be surely connected so as not to shift to the front, rear, left and right.

The joint structure thus obtained is not a simple butting of the end faces of the translucent panels 1 and 1, but a contact between the bent portions 10 and 10. Further, the frame member 2 is surrounded by the bent portions 10 and 10. Bolt 5 that penetrates the plate thickness of the bent portions 10 and 10.
Since it is tightened with, it can have high strength. Further, in the present invention, the bent portions 10, 10 of the translucent panels 1, 1 are in contact with each other and are joined on the side opposite to the road, and the road side has a panel lower end region lower than the line of sight of the driver or fellow passenger. There is no vertical bracket except. Therefore, it feels as if the sound insulation wall is made of a single piece of translucent material, and there is no separation of the field of view due to the joint members for each panel as in the conventional case, and a continuous continuous field of view is obtained, The scenery can be improved. In the first embodiment, since the frame members 2 and 2 are partial, a better landscape can be obtained.
Although the vertical end surface of the frame member 2 can be seen through, the connection strength of the translucent panels 1 and 1 can be improved.

In the case of the embodiment of FIG. 5, the intermediate rib 2a.
Since the left and right sides are partitioned and the bent portions 20 and 30 do not come into direct contact with each other, there is an advantage that damage to the bent portions 20 and 30 due to a load, an impact, or the like can be prevented.

[0018]

According to the present invention described above, adjacent translucent panels 1 and 1 have bent portions 10 and 10 respectively extending in the width direction end edge portions on the opposite road side.
0 and 10 are overlapped with each other, and the frame member 2 having a groove-shaped cross section is externally fitted, and the frame member 2 and the bent portions 10 and 10 are joined by fastening metal fittings in the thickness direction. Therefore, it is possible to obtain a sound insulating wall with a good landscape that makes full use of the characteristics of through-holes, and it is possible to obtain an excellent effect that it can be installed easily and efficiently. According to claims 2 and 3, the lower end portions of the left and right translucent panels 1, 1 further increase the support surface by the bent portions 10, 10, and are clamped from the front and rear by the base portion 3 and stably supported and fixed. As a result, the number of columns can be significantly reduced, and the excellent effect that the construction can be simplified and the construction cost can be reduced can be obtained.

[Brief description of drawings]

FIG. 1 (a) is a partial front view showing a first embodiment of a road sound insulation wall according to the present invention, and FIG. 1 (b) is a sectional view taken along line XX of FIG. 1 (a).

FIG. 2 is a perspective view showing the main part of the first embodiment from the back side,
(B) is a partial perspective view of the translucent panel.

3A is a cross-sectional view taken along the line YY of FIG. 1A, and FIG. 3B is a cross-sectional view taken along the line ZZ of FIG.

FIG. 4 is a perspective view showing a second embodiment of the present invention.

FIG. 5 is a partial cross-sectional view showing another embodiment of the present invention.

FIG. 6 (a) is a cross-sectional view showing a conventional joint structure of a road noise barrier, and FIG. 6 (b) is a cross-sectional view showing another joint structure of a conventional road noise barrier.

[Explanation of symbols]

1 translucent panel 3 Upper translucent panel 4 frame members 5 Volts 5'nut 200,300,301 through holes

Claims (3)

(57) [Claims] 1. A sound insulation wall formed by laterally connecting translucent sound insulation panels along a side portion of a road, in which adjacent light transmission panels 1 and 1 are provided on opposite edges of a width direction. Has bent portions 10, 10 extending to the side, and these bent portions 10, 10
And the frame member 2 having a groove-shaped cross section is externally fitted,
A sound insulation wall for a road, characterized in that the frame member 2 and the bent portions 10, 10 are joined together by fasteners in the thickness direction. 2. A sound insulation wall comprising translucent sound insulation panels connected in a lateral direction along a side portion of a road, wherein adjacent light transmission panels 1 and 1 are provided on opposite edges of a width direction. Has bent portions 10, 10 extending to the side, and these bent portions 10, 10
And the frame member 2 having a groove-shaped cross section is externally fitted,
The frame member 2 and the bent portions 10 and 10 are joined in the thickness direction by fasteners, and the lower end regions of the translucent panels 1 and 1 are a base plate 3a, a front side plate 3b, and a pair of rear side plates. A road sound insulation wall, which is supported and fixed by a base body 3 having 3c and 3c. 3. The lower end of the translucent panel is located on the base plate 3a, the front surface side plate 3b is positioned so as to extend to the left and right translucent panels, and the back side plates 3c, 3c are positioned on both sides of the base end of the bent portion. The sound insulation wall for road according to claim 2, wherein the front surface side plate 3b and the rear surface side plates 3c, 3c are fastened together by a fastening metal fitting penetrating the translucent panel.