JP2002302913A - Noise barrier for road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noise barrier for a road sufficiently effective in sound insulation and suitable for recycle of a member and installation work. SOLUTION: In this noise barrier for a road constructed of sound insulation panels 10, 10, etc., arranged in line on the road side, each of the noise insulation panels 10 is provided with a reinforcement structural body 15 consisting of a road side grid member 23, in which multiple reinforcements 22, 22, etc., are arranged in grid form, an outside grid member 24, and a multiple web reinforcements 25, 25, etc., each bent into a triangle for connecting and fixing the road side grid member 23 and the outside grid member 24 together along the reinforcement 22. In a void part 26 of the reinforcement structural body 15, a porous V-shaped metal plate 16 molded of a metal powder and grain material or a fiber material and formed into a V-shape in the cross section is arranged, and the outside surface of the outside grid member is covered with a porous flat metal plate 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road sound insulating wall mainly installed on a side of an elevated road or the like.

[0002]

2. Description of the Related Art Generally, on a highway or the like, as a countermeasure against noise pollution generated by a car traveling on a road,
For example, as shown in FIG.
2 has been installed to minimize the noise generated on the road and to avoid affecting nearby houses.

Conventionally, as shown in FIG. 12, such a sound-insulating wall 2 has a sound-insulating panel 5 in which a surface of a panel body 3 made of glass wool is covered with a punching metal 4, etc. 6 and so on.

[0004]

However, in the above-mentioned conventional techniques, glass wool is liable to deteriorate, and
Degraded glass wool is treated as industrial waste, and cannot be reused if mixed with other products such as products of other companies, which is not preferable in consideration of environmental problems.

[0005] Further, the sound insulation panel using glass wool has a problem that the total weight is large and the efficiency of installation work and transportation work is low.

SUMMARY OF THE INVENTION In view of the state of the prior art, it is an object of the present invention to provide a sound insulation wall for a road, which has a sufficient sound insulation effect and in which members can be reused and installation work is suitably performed.

[0007]

SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
In a road sound insulating wall in which sound insulating panels are arranged side by side on a road, the sound insulating panel includes a road side grid member and an outside grid member in which a large number of reinforcing bars are arranged in a grid, and the road side grid member and the outside. A reinforcing member comprising a plurality of web bars bent in a triangular wave shape so as to be connected and fixed between the grid member and the reinforcing bars along the reinforcing bars, and a longitudinal direction of the web bars is provided by the web bars of the reinforcing bar structure. A porous V having a substantially V-shaped cross section, formed of a metal powder or fiber material in a triangular prism-shaped space formed in a direction perpendicular to
A metal plate is provided, and the outer surface of the outer lattice member is covered with a flat porous flat metal plate.

[0008] A porous auxiliary metal plate having a substantially V-shaped cross section, which is supported by opposing ends of adjacent porous V-shaped metal plates and closes an opening formed between the ends. It is preferable to provide the sound insulation panel, and it is preferable to cover the road-side surface of the reinforcing steel structure with a sound insulation auxiliary plate having a plurality of openings having eaves.

The sound insulation wall for a road according to the present invention may be provided with a number of pillars at regular intervals on the side of the road, and a sound insulation panel provided between the pillars. The lower end of the sound insulating panel may be fixed so that the sound insulating panel is continuously installed along the traveling direction of the road, and the upper edges of the adjacent sound insulating panels may be connected by a shade member. May be provided with a lower receiving member fixed to the road foundation, and the sound insulating panels may be erected side by side on the lower receiving member, and the upper edges of the adjacent sound insulating panels may be connected by a shade member.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a road sound insulating wall according to the present invention will be described with reference to FIGS. The same parts as those in the above-described embodiment will be described with the same reference numerals.

In the figure, 1 is a road such as a highway, 10
Is a sound insulation wall installed on the side of the road.

The sound insulating wall 10 is provided with uprights 11, 11... Standing at regular intervals along the side of the road 1.
Sound insulation panels 12,1 on the earth retaining plate between 1,1
Are formed by connecting two in the vertical direction, and a gutter-shaped cap member 13 that is opened downward is provided at the upper edge thereof.

The column 11 is formed of a steel material and has a substantially H-shaped cross section. The lower end of the column 11 is embedded in a concrete base column 14, and the base column 14 is buried on the side of the road to form the column 11. It is designed to be erected on the side of the road.

As shown in FIG. 4, the sound insulation panel 12 includes a reinforcing steel structure 15 and a porous V-shaped metal plate 1 having a substantially V-shaped cross section.
., A flat porous flat metal plate 17, and porous auxiliary metal plates 18, 18. The road-side surface of the sound insulation panel 12 is provided on the sound insulation auxiliary plates 19 and 1.
The outer surface is covered with decorative plates 21, 21... So as to form an air layer 20 behind the porous metal plate at some distance from the surface.

Each of the reinforcing bar structures 15 includes a plurality of reinforcing bars 2.
Road-side grid members 23 in which 2, 22,...
Are provided with an outer lattice member 24 and a large number of web bars 25 bent in a triangular wave shape so as to connect and fix the road-side lattice member 23 and the outer lattice member 24 along the reinforcing bar 22. These rebars 22 and 25 are respectively joined by welding or the like, and formed into a flat rectangular parallelepiped shape having a truss structure inside.

Inside the reinforcing bar structure 15, triangular prism-shaped spaces 26, 26,... Extending in a direction perpendicular to the longitudinal direction of the web bar are defined by web bars 25, 25,.
In this space 26, a porous V-shaped metal plate 16 having a substantially V-shaped cross section is provided.
Is installed. Further, the outer surface of the reinforcing bar structure 15 is covered with a flat porous flat metal plate 17.

Also, adjacent porous V-shaped metal plates 16, 1
6 are supported by mutually opposing ends 16a, 16a, and are provided with porous auxiliary metal plates 18, having a substantially V-shaped cross section so as to close an opening 27 formed between the ends.

The porous V-shaped metal plate 16 and the porous flat metal plate 1
7 and the porous auxiliary metal plate 18 are formed by sintering aluminum or aluminum alloy powder and granular material to a porosity of about 4
It is formed to be 5% porous. The method of manufacturing this metal plate is, for example, to mix aluminum powder with an aluminum-copper alloy in an amount of about 1 to 10% by weight, and to mix it at 590 to 660 ° C.
To form a porous body. Also, instead of aluminum-copper alloy, aluminum-silicon alloy or copper,
Silicon powder can also be used.

The principle of sound absorption of these porous metal plates is shown in FIG.
As shown in Fig. 7, the incident sound hits the resonator composed of the porous metal plate and the air layer behind it, and the air in the hole near the resonance frequency (peak of the sound absorption coefficient) is explained by the resonance type sound absorption mechanism. Vibrates violently, and the energy of sound is consumed as frictional heat with the surroundings. In addition, when a sound wave passes through the porous metal plate even at a frequency other than the vicinity of the resonance frequency, the incident sound is also attenuated by friction with the walls in the holes of the porous metal plate.

As shown in FIG. 6, the sound insulation auxiliary plate 19 is formed in a flat plate shape from an aluminum steel material, and is provided with a large number of openings 28 having an eave portion 28a by press working.

With such a configuration, the noise generated on the road 1 is absorbed by the sound insulating panel 12 on the sound insulating wall or reflected on the road side, so that the noise can be suitably blocked.

Next, another embodiment of the road noise barrier according to the present invention will be described with reference to FIGS. The same parts as those in the above-described embodiment will be described with the same reference numerals.

As shown in FIG. 7, the sound insulating wall 30 is provided on the side of a railing section 31 provided on the side of the road along the traveling direction, and the lower end of the sound insulating panels 32, 32. Fixed so that it is installed continuously along
The upper edges of the adjacent sound insulation panels 32 are connected by a cap member 33.

The sound insulation panel 32 includes a road-side grid member 23 and an outer grid member 24 in which a large number of reinforcing bars 22, 22,... A reinforcing bar structure 15 comprising a large number of web bars 25 bent in a triangular wave shape so as to be connected and fixed to the lattice member 24 along the reinforcing bar 22;
Triangular prism-shaped spaces 26, 2 defined in the reinforcing bar structure 15
6 are provided with porous V-shaped metal plates 16, 16... Having a substantially V-shaped cross section, which are formed of metal powder or fiber material.
Porous flat metal plate 1 having a flat outer surface on reinforcing bar structure 15
Covered with 7.

Also, adjacent porous V-shaped metal plates 16, 1
6 are supported by mutually opposed ends 16a, 16a, and are provided with porous auxiliary metal plates 18, having a substantially V-shaped cross section so as to close an opening 27 formed between the ends 16a, 16a. ing.

As in the above-described embodiment, the sound insulating panel 3
2 is covered with sound-insulating auxiliary plates 19, 19,..., And the outer surface is covered with decorative plates 21, 21,.

The cap member 33 is formed in a gutter shape opened downward with a steel material, and has attachment pieces 33a, 33a projecting inward from the lower edge of the side wall of the gutter. And the body edge member 3 which fixed this attachment piece 33a to the sound insulation panel 32
4 is fixed by bolting or the like, so that
Is fixed to the sound insulation panel 32.

At the lower end of the road-side lattice member 23 of the sound insulation panel 32, an attachment member 35 made of H steel material for attaching the sound insulation panel 32 to the railing section 31 is fixed. The sound insulation panel 32 is fixed to the side surface of the railing section 31 by fixing it to the railing section 31 using the above method. In addition, by connecting the upper edges of the two sound insulation panels 32, 32 with the cap members 33 in a state where the joining surfaces of the adjacent sound insulation panels 32, 32 are abutted, a continuous sound insulation wall is formed without any pillar.

Next, a third embodiment of a road sound insulating wall according to the present invention will be described with reference to FIGS. The same parts as those in the above-described embodiment will be described with the same reference numerals.

As shown in FIG. 9, the sound-insulating wall 40 is fixed to a lower receiving member 43 with an anchor member 42 on the upper surface of a base portion 41 formed on the side of the road. The same sound insulation panel 32 as in the above embodiment,
32 are arranged in a line along the traveling direction, and the upper edges of the adjacent sound insulation panels 32 are connected by a cap member 33.

The lower receiving member 43 is made of a steel material and has a substantially H section.
It is formed in the shape of a letter, and is installed with opening upward and downward. With this installation, a gutter-shaped panel receiving portion 44 is formed on the upper portion of the lower receiving member 43, and a mounting piece 45 for fixing the lower receiving member 43 to the base of the road is provided on the lower end side surface.
Are fixed by welding or bolting.

The portion of the sound insulating panel 32 erected on the panel receiving portion 44 is fixed by fixing the portion engaging with the panel receiving portion 44 with concrete or the like, and the mounting portion 45 is fixed to the base portion using the anchor member 42. By fixing, the sound insulation wall 40 is erected.

In the above-described embodiment, the case where the cap member is formed in a gutter shape opening downward has been described. However, other shapes may be used as long as adjacent sound insulation panels are connected.

[0034]

As described above, the sound insulation wall for a road according to the present invention is a sound insulation wall for a road in which sound insulation panels are arranged side by side on the road, wherein the sound insulation panel has a large number of reinforcing bars arranged in a grid pattern. A reinforcing bar structure including a road-side grid member and an outer grid member, and a number of web bars bent in a triangular wave shape so as to connect and fix the road-side grid member and the outer grid member along the reinforcing bar. A substantially V-shaped cross-section formed of a metal powder or fiber material in a triangular prism-shaped space formed by the web reinforcement of the rebar structure in a direction perpendicular to the longitudinal direction of the web reinforcement. By installing a porous V-shaped metal plate of the above, by covering the outer surface of the outer lattice member with a flat porous flat metal plate, a sufficient sound insulation effect can be obtained, and the member can be reused,
Environmentally Friendly. Also, the weight of the sound insulation panel can be reduced, and the efficiency of installation work and the like can be improved.

Further, a porous auxiliary metal plate having a substantially V-shaped cross section, which is supported by the opposing ends of adjacent porous V-shaped metal plates and closes an opening formed between the ends. By providing the sound insulation panel, the sound insulation effect is more suitably exhibited.

It should be noted that a large number of pillars are installed at regular intervals on the side of the road, and a sound insulating panel is provided between the pillars, so that a highly stable sound insulating wall is formed.

Further, the lower end of the sound insulating panel is fixed to the side of the railing section of the road so that the sound insulating panel is continuously installed along the direction of travel of the road, and the upper edge of the adjacent sound insulating panel is formed in a gutter shape. A lower support member fixed to the road foundation by means of a cap member or a fixing device such as an anchor, and a sound insulation panel is arranged on the lower support member so as to be erected and the upper edge of the adjacent sound insulation panel Are connected by a cap member, so that it is not necessary to provide a support, and a beautiful appearance can be obtained.

Further, by covering the road-side surface of the reinforcing steel structure with a sound insulation auxiliary plate having a plurality of openings having eaves, a more favorable sound insulation effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing an embodiment of a road noise barrier according to the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along the line BB in FIG.

FIG. 4 is a partially enlarged cross-sectional view showing the structure of the sound insulating panel in FIG.

FIG. 5 is a schematic diagram showing the sound absorption principle of the sound insulating panel.

FIG. 6 is a longitudinal sectional view showing the sound insulation auxiliary plate in FIG. 1;

FIG. 7 is a partially cutaway front view showing another example of the road sound insulating wall according to the present invention.

FIG. 8 is a sectional view taken along the line CC in FIG.

FIG. 9 is a partially cutaway front view showing another example of the road sound insulation wall according to the present invention.

FIG. 10 is a sectional view taken along the line DD in FIG.

FIG. 11 is a cross-sectional view showing an installation state of a road sound insulation wall.

FIG. 12 is an exploded perspective view showing an example of a conventional road sound insulating wall.

FIG. 13 is a perspective view showing the structure of the above sound insulation panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road 10 Sound insulation wall 11 Prop 12 Sound insulation panel 13 Shade member 14 Base pillar 15 Reinforcement structure 16 Porous V-shaped metal plate 16a End 17 Porous flat metal plate 18 Porous auxiliary metal plate 19 Sound insulation auxiliary plate 20 Air layer 21 Makeup Plate 22 Reinforcing Bar 23 Roadside Grid Member 24 Outer Grid Member 25 Web Bar 26 Space 27 Opening 30 Sound Insulation Wall 31 High Column 32 Sound Insulation Panel 33 Shade Member 33a Mounting Piece 34 Body Edge Member 35 Mounting Member 40 Sound Insulation Wall 41 Road Foundation 42 Anchor Member 43 Lower receiving member 44 Panel receiving part 45 Mounting part

 ──────────────────────────────────────────────────続 き Continuing from the front page (71) Applicant 598159333 Marubeni Itochu Techno Steel Co., Ltd. 2-3-4, Nihonbashi Muromachi, Chuo-ku, Tokyo (72) Inventor Masahiro Uchida 7-2-8, Ueno, Taito-ku, Tokyo Shares Inside the company deck (72) Inventor Hiroyoshi Kikuchi 1-687 Nadamachi, Narashino-shi, Chiba NDC Corporation (72) Inventor Norio Kasaya 1-1 1-1 Baba Shimomachi, Shinjuku-ku, Tokyo Inside Taisei Engineering Corporation ( 72) Inventor Eiji Fujiwara 2-7-1, Nihonbashi Honcho, Chuo-ku, Tokyo F-term in ITOCHU Techno Metal Co., Ltd. 2D001 AA01 BA02 CA02 CB03 CD03 CD04 5D061 AA16 AA22 AA29 BB02 BB21 BB27 BB37

Claims (6)

[Claims] 1. A road sound insulation wall comprising sound insulation panels arranged side by side on a road side, wherein the sound insulation panel comprises: a road side grid member and an outer grid member each having a large number of reinforcing bars arranged in a grid; A rebar structure consisting of a number of web bars bent in a triangular wave shape so as to connect and fix the side grid member and the outer grid member along the rebar, and the web bar of the rebar structure comprises In a triangular prism-shaped space formed in a direction perpendicular to the longitudinal direction of the web streak, a porous V-shaped metal plate having a substantially V-shaped cross section formed of a metal powder material or a fiber material is provided, and the outer grid is provided. A sound insulation wall for roads, characterized in that the outer surface of the member is covered with a flat porous flat metal plate. 2. A porous auxiliary metal plate having a substantially V-shaped cross section, which is supported at opposite ends of adjacent porous V-shaped metal plates and closes an opening formed between the ends. The sound insulation wall for roads according to claim 1 provided in a sound insulation panel. 3. A system according to claim 1, wherein a plurality of columns are installed at a predetermined interval on the side of the road, and a sound insulation panel is provided between the columns.
Or the road noise barrier according to 2. 4. A lower end of a sound insulation panel is fixed to a side surface of a railing section of a road so that the sound insulation panel is continuously installed along a traveling direction of the road, and an upper edge of the adjacent sound insulation panel is covered with a cap member. The road sound insulation wall according to claim 1 or 2, wherein the road noise insulation wall is connected. 5. A lower receiving member fixed to a road base portion by a fixing device such as an anchor, and sound insulating panels are arranged and erected on the lower receiving member, and an upper edge of the adjacent sound insulating panels is covered with a cap member. The road sound insulation wall according to claim 1 or 2, wherein the road noise insulation wall is connected. 6. The road sound insulating wall according to claim 1, wherein the road side surface of the reinforcing steel structure is covered with a sound insulating auxiliary plate having a plurality of openings having eaves.