JP2835024B2 - Noise barrier - Google Patents
Noise barrierInfo
- Publication number
- JP2835024B2 JP2835024B2 JP26509295A JP26509295A JP2835024B2 JP 2835024 B2 JP2835024 B2 JP 2835024B2 JP 26509295 A JP26509295 A JP 26509295A JP 26509295 A JP26509295 A JP 26509295A JP 2835024 B2 JP2835024 B2 JP 2835024B2
- Authority
- JP
- Japan
- Prior art keywords
- sound
- wall
- insulating wall
- silencer
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、道路や鉄道線路の
側面に設置される防音壁の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a soundproof wall installed on a side of a road or a railway line.
【0002】[0002]
【従来の技術】道路や鉄道線路の側面に設置される防音
壁は、H型鋼からなる支柱間に遮音パネルを落とし込ん
で遮音壁または吸音性遮音壁(本明細書においては両者
を単に「遮音壁」と記す)を構成したものが普通であ
る。しかしこのような単純な構造の遮音壁では、防音効
果を高めるためには遮音壁の高さを高くしなければなら
ず、周囲の日照を妨げる等の問題を招くおそれがある。2. Description of the Related Art A sound insulating wall installed on the side of a road or a railway line is a sound insulating wall or a sound absorbing sound insulating wall formed by dropping a sound insulating panel between pillars made of H-shaped steel (both are simply referred to as "sound insulating walls" in this specification). ) Is common. However, in such a sound-insulating wall having a simple structure, the height of the sound-insulating wall must be increased in order to enhance the soundproofing effect, which may cause problems such as hindering surrounding sunshine.
【0003】そこで図5に示されるように、遮音壁1の
上端に消音筒2を取り付けた防音壁が開発されている。
この防音壁は、図示のように音源からの音波が消音筒2
の表面を回り込むように回折するため、音源と受音点と
を結ぶ音波の回折距離が長くなり、防音壁の全体の高さ
をあまり高くすることなく防音効果を高めることができ
る利点がある。Therefore, as shown in FIG. 5, a soundproof wall having a sound deadening cylinder 2 attached to the upper end of a soundproof wall 1 has been developed.
As shown in the figure, the soundproof wall is provided with a sound-absorbing cylinder
Is diffracted so as to go around the surface of the sound-receiving wall, so that the diffraction distance of the sound wave connecting the sound source and the sound receiving point is increased, and there is an advantage that the soundproofing effect can be enhanced without making the overall height of the soundproof wall too high.
【0004】ところが、防音効果を高めるためには消音
筒2のサイズをある程度大きくしなければならないた
め、消音筒2の車両通行側の端部が道路や線路側に突出
することとなる。その結果、サイズを大きくすると消音
筒2の端部の位置が防音壁に定められた建築限界を越
え、走行車両と接触するおそれが生じていた。However, since the size of the muffling tube 2 must be increased to some extent in order to enhance the soundproofing effect, the end of the muffling tube 2 on the vehicle traffic side protrudes toward the road or track. As a result, when the size is increased, the position of the end of the silencer 2 exceeds the architectural limit set for the soundproof wall, and there is a risk of contact with the traveling vehicle.
【0005】[0005]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決して、防音壁に定められた建築限界を越
えることなく、消音筒のサイズを大きくすることができ
る防音壁を提供するためになされたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a soundproof wall capable of increasing the size of a sound deadening cylinder without exceeding the architectural limit set for the soundproof wall. It was done to do so.
【0006】[0006]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の防音壁は、遮音壁の上端に消音筒
を取り付けた防音壁であって、この消音筒が、遮音壁へ
の取付け面から車両通行側とは反対側に傾斜した中心軸
を有することを特徴とするものである。なお、消音筒が
円形または楕円形の断面を持つ主体部と、この主体部か
ら斜めに伸びる取付け脚部とからなることが好ましい。A sound-insulating wall according to the present invention for solving the above-mentioned problem is a sound-insulating wall having a sound-absorbing tube attached to an upper end of the sound-insulating wall, and the sound-absorbing tube is attached to the sound insulating wall. It has a central axis inclined from the surface to the side opposite to the vehicle traffic side. In addition, it is preferable that the muffler tube includes a main body having a circular or elliptical cross section, and a mounting leg extending obliquely from the main body.
【0007】[0007]
【発明の実施の形態】以下に本発明の好ましい実施の形
態を、図面を参照しつつ更に詳細に説明する。図1〜図
3は本発明の第1の実施の形態を示すもので、図1は本
発明の防音壁を道路あるいは線路側から見た正面図、図
2は側面図、図3は消音筒の拡大側面図である。これら
の図中、1は遮音壁、2はその上端に取り付けられた消
音筒である。遮音壁1は従来と同様、H型鋼からなる支
柱3、3間に遮音パネル4を多段に落とし込んで構成さ
れたものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in more detail with reference to the drawings. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a front view of a soundproof wall of the present invention viewed from a road or a track side, FIG. 2 is a side view, and FIG. FIG. In these figures, reference numeral 1 denotes a sound insulating wall, and 2 denotes a silencer attached to the upper end thereof. The sound insulation wall 1 is configured by dropping a sound insulation panel 4 in multiple stages between pillars 3 made of H-shaped steel, as in the related art.
【0008】消音筒2は吸音性材料を筒状に成形したも
のであり、その材質は特に限定されるものではないが、
この場合にはアルミニウム繊維を板状に圧着成型したア
ルミニウム多孔質吸音材が用いられている。消音筒2は
この他に、表面材として金属製又は合成樹脂製の孔明き
板や網とし、グラスウール、ロックウール等の繊維状吸
音材を単独あるいはフィルム、ガラスのロスで包んだ状
態で内蔵したものでもよい。消音筒2は図3に示すよう
に円形の断面を持つ主体部5と、この主体部5から斜め
に伸びる取付け脚6とを備えたものである。そしてこの
取付け脚6の下端面である取付け面6aを遮音壁1の上端
の取付け座7にボルト止めすることにより、消音筒2の
中心軸Oが、遮音壁1への取付け座7から車両通行側と
は反対側に傾斜した状態となるようにする。なお、8は
消音筒2の内部に設けられた遮音性の仕切り板であり、
9は取付け座7の外部を覆う化粧板である。The sound absorbing cylinder 2 is formed by molding a sound absorbing material into a cylindrical shape, and the material is not particularly limited.
In this case, an aluminum porous sound-absorbing material formed by pressing aluminum fibers into a plate shape is used. The silencer 2
In addition, perforations made of metal or synthetic resin as surface material
Use as a plate or net, and use fibrous suction such as glass wool and rock wool.
Sound material alone or wrapped in film or glass loss
It may be built in. As shown in FIG. 3, the silencer 2 includes a main body 5 having a circular cross section, and mounting legs 6 extending obliquely from the main body 5. Then, the mounting surface 6a, which is the lower end surface of the mounting leg 6, is bolted to the mounting seat 7 at the upper end of the sound insulating wall 1, so that the central axis O of the sound deadening cylinder 2 moves from the mounting seat 7 to the sound insulating wall 1 to the vehicle traffic side. Should be inclined to the opposite side. Reference numeral 8 denotes a sound-insulating partition provided inside the muffler 2.
9 is a decorative plate that covers the outside of the mounting seat 7.
【0009】この結果、消音筒2は遮音壁1の上端から
車両通行側とは反対側に偏位することとなるため、車両
通行側にはほとんどはみ出すことがなくなり、図2に示
すように防音壁に定められた建築限界を越えることがな
い。しかも音波の回折距離は、消音筒2を遮音壁1の真
上に取り付けた場合よりも長くなり、減音効果は高ま
る。As a result, the noise reduction cylinder 2 is displaced from the upper end of the sound insulating wall 1 to the side opposite to the vehicle traffic side, so that it hardly protrudes to the vehicle traffic side, and as shown in FIG. Does not exceed the architectural limits set forth in Moreover, the diffraction distance of the sound wave is longer than when the sound deadening cylinder 2 is mounted directly above the sound insulating wall 1, and the sound reduction effect is enhanced.
【0010】すなわち、全高を一定とすれば消音筒2を
傾斜させた分だけ消音筒2を長くでき、音波の回折距離
も長くなる。このため、本発明者の実験によれば図2、
図3のような断面円形の消音筒2の傾斜角度を0°とし
た場合に比較して、傾斜角度を10°とすると減音効果は
1.0 dB向上し、傾斜角度を30°とすると減音効果は1.5
dB向上し、傾斜角度を45°とすると減音効果は2.0 dB向
上することが確認された。しかしあまりに消音筒2を傾
斜させると水平方向への突出量が大きくなるから、傾斜
角度は10〜45°の範囲とすることが好ましい。That is, if the overall height is kept constant, the silencer 2 can be lengthened by the amount of the inclination of the silencer 2 and the diffraction distance of the sound wave becomes longer. Therefore, according to the experiment of the present inventor, FIG.
As compared with the case where the inclination angle of the silencer cylinder 2 having a circular cross section as shown in FIG.
Improves by 1.0 dB, the sound reduction effect is 1.5 when the inclination angle is 30 °
It was confirmed that the noise reduction effect was improved by 2.0 dB when the tilt angle was set to 45 °. However, if the muffler cylinder 2 is inclined too much, the amount of protrusion in the horizontal direction increases, so the inclination angle is preferably in the range of 10 to 45 °.
【0011】図4は本発明の第2の実施形態を示すもの
で、消音筒2の形状が横長楕円形の断面を持つ主体部5
と、この主体部5から斜めに伸びる取付け脚部6とから
なるものとされている。この消音筒2の形状は、全高を
あまり高くすることなく音波の回折距離をより長くでき
る利点がある。FIG. 4 shows a second embodiment of the present invention, in which a muffler 2 has a main body 5 having a horizontally elliptical cross section.
And a mounting leg 6 extending obliquely from the main body 5. The shape of the silencer 2 has the advantage that the diffraction distance of the sound wave can be made longer without increasing the overall height too much.
【0012】[0012]
【発明の効果】以上に説明したように、本発明の防音壁
は遮音壁への取付け面から車両通行側とは反対側に傾斜
した中心軸を有する消音筒を遮音壁の上端に取り付けた
ものであるので、消音筒のサイズを大きくしても消音筒
が防音壁に定められた建築限界を越えることがなくな
る。しかも消音筒を傾斜させたことによって全高を一定
としたままで減音効果を高めることもできる。よって本
発明は建築限界を守りながら従来よりも優れた防音効果
を得ることができる利点がある。As described above, the soundproofing wall of the present invention has a sound deadening cylinder having a central axis inclined to the side opposite to the vehicle traffic side from the mounting surface to the soundproofing wall, mounted on the upper end of the soundproofing wall. Therefore, even if the size of the silencer is increased, the silencer does not exceed the architectural limit set for the soundproof wall. Moreover, the noise reduction effect can be enhanced while keeping the overall height constant by inclining the silencer cylinder. Therefore, the present invention has an advantage that a soundproofing effect superior to the conventional one can be obtained while keeping the architectural limit.
【図1】本発明の第1の実施形態の防音壁の正面図であ
る。FIG. 1 is a front view of a soundproof wall according to a first embodiment of the present invention.
【図2】図1の側面図である。FIG. 2 is a side view of FIG.
【図3】消音筒の拡大側面図である。FIG. 3 is an enlarged side view of the muffler.
【図4】本発明の第2の実施形態における消音筒の拡大
側面図である。FIG. 4 is an enlarged side view of a sound deadening cylinder according to a second embodiment of the present invention.
【図5】従来例の側面図である。FIG. 5 is a side view of a conventional example.
1 遮音壁、2 消音筒、3 H型鋼からなる支柱、4
遮音パネル、5 主体部、6 取付け脚、6a 取付け
面、7 取付け座、8 仕切り板、9 化粧板 O 中心軸1 sound insulation wall, 2 silencer, 3 H-shaped steel column, 4
Sound insulation panel, 5 main body, 6 mounting legs, 6a mounting surface, 7 mounting seat, 8 partition plate, 9 decorative plate O central axis
Claims (2)
壁であって、この消音筒が、遮音壁への取付け面から車
両通行側とは反対側に傾斜した中心軸を有することを特
徴とする防音壁。1. A sound insulating wall having a sound deadening tube attached to an upper end of a sound insulating wall, wherein the sound deadening tube has a central axis inclined from a mounting surface to the sound insulating wall to a side opposite to a vehicle traffic side. Soundproof wall.
主体部と、この主体部から斜めに伸びる取付け脚部とか
らなるものである請求項1に記載の防音壁。2. The soundproof wall according to claim 1, wherein the silencing cylinder comprises a main body having a circular or elliptical cross section, and a mounting leg extending obliquely from the main body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26509295A JP2835024B2 (en) | 1995-10-13 | 1995-10-13 | Noise barrier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26509295A JP2835024B2 (en) | 1995-10-13 | 1995-10-13 | Noise barrier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09111723A JPH09111723A (en) | 1997-04-28 |
JP2835024B2 true JP2835024B2 (en) | 1998-12-14 |
Family
ID=17412496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP26509295A Expired - Fee Related JP2835024B2 (en) | 1995-10-13 | 1995-10-13 | Noise barrier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2835024B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100588430B1 (en) * | 2004-09-02 | 2006-06-09 | (주) 대상건설 | Reduce noise device for soundproofing walls |
JP2013053447A (en) * | 2011-09-02 | 2013-03-21 | Shutoko Maintenance East Tokyo | Sound absorbing component |
JP6823419B2 (en) * | 2016-10-04 | 2021-02-03 | 東日本旅客鉄道株式会社 | Girder structure |
-
1995
- 1995-10-13 JP JP26509295A patent/JP2835024B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH09111723A (en) | 1997-04-28 |
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