JP3856701B2

JP3856701B2 - Mounting structure of sound insulation board on road noise barrier

Info

Publication number: JP3856701B2
Application number: JP2002012060A
Authority: JP
Inventors: 正貴戸澤; 一彦香川; 拓也小山; 英史吉田; 良樹若林; 直弘佐多
Original assignee: Nippon Sheet Glass Environment Amenity Co Ltd; Sumikei Nikkei Engineering Co Ltd
Current assignee: Nippon Sheet Glass Environment Amenity Co Ltd; Nippon Engineering Co Ltd
Priority date: 2002-01-21
Filing date: 2002-01-21
Publication date: 2006-12-13
Anticipated expiration: 2022-01-21
Also published as: JP2003213627A

Description

【０００１】
【発明の属する技術分野】
この発明は、道路に沿って構築される道路用防音壁において、道路上を走行する車両の運転手などの視界範囲に透明な遮音板を取り付ける構造の技術分野に属する。
【０００２】
【従来の技術】
従来、道路用防音壁に透明な遮音板を採用することは種々公知であり、広く実施されている。例えば、
（１）特開平６−３３４２５号公報には、透明な合成樹脂板等による遮音板の四周に予め周枠材を取り付け、支柱の道路側面に取付用ボルトを立てて準備し、前記周枠材に予め設けてある取り付け用孔（ボルト孔）を前記支柱のボルトへはめ合わせ、ナット締めにより取り付けた防音壁が開示されている。
（２）特開平５−１８７００４号公報には、透明なアクリルガラス等による遮音プレートの縦辺を支柱の道路側面で隣り合うもの同士を重ね合わせ、道路側から支柱へねじ込んだボルトで共通に固定した道路用防音壁が開示されている。
（３）特開平１０−２３７８２９号公報には、透明な合成樹脂板、ガラス板等による遮音板の四周に予め通孔を設け、支柱及び隣接する支柱の上下を繋ぐ胴縁それぞれの道路側面に鍔状の頭を有するピンを立てて準備し、遮音板の通孔を前記支柱及び胴縁のピンへはめ合わせ、遮音板の通孔から突き出たピンの頭部へ、道路側から支持部材を取り付けて固定した防音壁が開示されている。
【０００３】
【発明が解決しようとする課題】
最近、図１に例示したように、道路１上を走行する車両の運転手の視界範囲である下部（下半部）に透明な遮音板２を取り付けて視界を広げ、その上部（上半部）に防音パネル３を取り付けて遮音と吸音効果を高めること、そして、防音壁を全体として道路側へ覆い被さるように湾曲させ、道路に発生した騒音を閉じこめて防音効果を高める構成の防音壁が要請されつつある。
【０００４】
上記（１）〜（３）に紹介した従来技術はいずれも、透明な遮音壁を採用し、それを車道側から支柱へ取り付ける構造を開示している。
【０００５】
しかし、透明な合成樹脂板、ガラス板等による遮音板を支柱へ取り付ける手段として、上述した従来技術（１）又は（３）のように遮音板の四周に枠材又は支持材を取付けると、例えば図１に例示したように支柱４の車道側の面が湾曲している場合には、枠材又は支持材もまた支柱４と同じ曲率で予め湾曲させる成形加工が不可欠であるから、大変な負担を強いられるし、現場合わせの作業も面倒である。
【０００６】
また、上記した従来技術（２）のように、隣り合う２枚の遮音プレートの水平方向の端部を支柱の道路側の面において重ね合わせ、道路側から支柱へねじ込んだボルトで共通に固定する構造は合理的であるが、例えば供用中に自動車事故等で防音壁に破損等が発生し交換修理を行うためにボルトを緩めて外すと、交換が必要な遮音プレートのみならず、健全で交換が無用な遮音プレートまでも外れてしまい、バラバラ状態となって取り扱いが面倒であり、作業性が悪い。
【０００７】
よって、本発明の目的は、透明な遮音板の取り付け、取り外し作業を道路側から簡便に行え、交換が必要な遮音板はそれのみを、即ち、他の遮音板の取付状態に影響を及ぼすことなく取り外して交換修理を軽便に迅速に行える構成とした、道路用防音壁における遮音板の取付構造を提供することである。
【０００８】
本発明の次の目的は、支柱がＨ形鋼、溝形鋼で有る場合はもとより、角管などであっても、また、その支柱が湾曲していても遮音板の取り付けを適切に行える道路用防音壁における遮音板の取付構造を提供することである。
【０００９】
【課題を解決するための手段】
上述の課題を解決するための手段として、請求項１に記載した発明に係る道路用防音壁における遮音板の取付構造は、
道路用防音壁における遮音板を支柱へ取り付ける構造において、
遮音板は、その水平方向の端部が、支柱の車道側の面へ、隣接する遮音板の端部同士が重ならない配置で当てがわれ、車道側から取付金具により支柱へ取り付けた押さえ部材により固定されていること、
前記押さえ部材は、支柱の車道側の面において隣接する２枚の遮音板の前記端部を別々に固定する一対から成り、一対をなす押さえ部材は、一方の遮音板の端部のみを固定するように配置され、各押さえ部材の支柱の中心側に位置する部位が上下方向に交互の配置で取付金具により支柱に固定されていることを特徴とする。
【００１０】
請求項２記載の発明は、請求項１に記載した道路用防音壁における遮音板の取付構造において、
押さえ部材は、支柱の車道側の面へ当てがわれて隣り合う２枚の遮音板の一方の端部のみを押さえる小片として構成され、支柱の上下方向に交互に千鳥状の配置でボルト止めされていることを特徴とする。
【００１１】
請求項３記載の発明は、請求項２に記載した道路用防音壁における遮音板の取付構造において、
前記小片としての押さえ部材は、ボルト止め位置を中心として、支柱の車道側の面と平行な面内で回転可能に構成されていることを特徴とする。
【００１２】
請求項４記載の発明は、請求項１に記載した道路用防音壁における遮音板の取付構造において、
押さえ部材は、支柱の車道側の面へ当てがわれて隣り合う２枚の遮音板の一方の端部のみを、その全長にわたり、若しくは全長を複数に分割した長さに連続して押さえる長尺物として構成され、支柱の中心側に位置する部位が上下方向に交互の配置でボルト止めされていることを特徴とする。
【００１３】
請求項５記載の発明は、請求項１に記載した道路用防音壁における遮音板の取付構造において、
押さえ部材は、支柱の車道側の面へ当てがわれて隣り合う２枚の遮音板の一方の端部のみをその全長にわたり、若しくは全長を複数に分割した長さに連続して押さえる長尺物と、他方の端部を押さえる小片との組合せで構成され、それぞれは支柱の中心側に位置する部位が支柱の上下方向に交互の配置でボルト止めされていることを特徴とする。
【００１４】
請求項６記載の発明は、請求項１〜５のいずれか一に記載した道路用防音壁における遮音板の取付構造において、
支柱へボルト止めした押さえ部材を覆い隠す化粧部材が、支柱の車道側の面に取り付けられていることを特徴とする。
【００１５】
請求項７記載の発明は、請求項６に記載した道路用防音壁における遮音板の取付構造において、
化粧部材は、押さえ部材による遮音板の取り付けを省略した複数位置へ、車道側からボルト止めして取り付けられていることを特徴とする。
【００１６】
請求項８記載の発明は、請求項２〜７のいずれか一に記載した道路用防音壁における遮音板の取付構造において、
押さえ部材は、支柱の車道側の面との間に、遮音板の厚さと弾性材の厚さを加算した長さよりも少し短いスペーサーを介してボルト止めされていることを特徴とする。
【００１７】
請求項９記載の発明は、請求項６又は７に記載した道路用防音壁における遮音板の取付構造において、
化粧部材は、支柱の車道側の面との間に、遮音板の厚さと弾性材の厚さを加算した長さよりも少し長いスペーサーを介してボルト止めされていることを特徴とする。
【００１８】
請求項１０記載の発明は、請求項２〜９のいずれか一に記載した道路用防音壁における遮音板の取付構造において、
支柱のボルト孔は、支柱の車道側の面の中央の上下方向に一列状の配置で設けられていることを特徴とする。
【００１９】
請求項１１記載の発明は、請求項１〜１０のいずれか一に記載した道路用防音壁における遮音板の取付構造において、
支柱の水平断面は角形状であることを特徴とする。
【００２０】
請求項１２記載の発明は、請求項１〜１１のいずれか一に記載した道路用防音壁における遮音板の取付構造において、
支柱の水平断面は車道側の面が細幅の角形状であることを特徴とする。
【００２１】
請求項１３記載の発明は、請求項１〜１２のいずれか一に記載した道路用防音壁における遮音板の取付構造において、
支柱は車道側へ湾曲した形状であり、遮音板の水平方向の端部は湾曲した支柱の車道側の面に沿う湾曲状態に取り付けられていることを特徴する。
【００２２】
請求項１４記載の発明は、請求項１〜１３のいずれか一に記載した道路用防音壁における遮音板の取付構造において、
支柱の水平断面は角形状であり、各ボルト止め位置に設けたボルト孔に隣接してナット取付用孔が設けられ、前記ナット取付用孔を通じて挿入可能で管壁を挟み同ナット取付用孔の縁へ取り付け可能なＵ字形状のクリップの片面にナットを固着して成るクリップナットがそのナットを管内面側においてボルト止め位置のボルト孔と中心が一致するように設置され、支柱の車道側の面から前記ナットへねじ込まれたボルトによって押さえ部材又は化粧部材の取り付けが行われていることを特徴する。
【００２３】
【発明の実施形態】
以下に、図面を参照して、請求項１〜１４に記載した発明に係る道路用防音壁における遮音板の取付構造の実施形態を説明する。
【００２４】
図１は、ポリカーボネート等による透明な遮音板２を下半部に取り付け、上半部に防音パネル３を取り付けた道路用防音壁の実施形態を示している。下半部の透明な遮音板２を取り付けた範囲の支柱４は車道側へ大きく湾曲しており、遮音板２は同支柱４の湾曲面に沿って湾曲面状に取り付けられている。一方、上半部の防音パネル３を取り付けた範囲の支柱４はほぼ直線状であり、防音パネル３は平面状に取り付けられている。遮音板２及び防音パネル３はそれぞれ、車道側からの作業として取り付け、取り外し可能に構成されている。図示した支柱４の水平断面は角形状であるが、この限りではなく、既往のＨ形鋼、溝形鋼なども同様に使用可能である。
【００２５】
図２及び図４は、ポリカーボネート等による透明な遮音板２の水平方向両側の端部２ａが、支柱４の車道側の面４ａへ、隣接する２枚の遮音板２、２の端部２ａ、２ａ同士が重ならないように、支柱４の中央部に若干の間隔Ｓをあけた配置で当てがわれていることを示す。そして、２枚の遮音板２、２の端部２ａ、２ａは、車道側から支柱４へ取付金具６で取り付けた押さえ部材５により固定して取り付けられている。
【００２６】
前記押さえ部材５は、支柱４の車道側の面４ａへ当てがわれて隣接する左右２枚の遮音板２、２の前記端部２ａ、２ａを左右別々に固定する一対５Ａ、５Ｂで構成されている。前記一対をなす（又は二つのグループをなす）押さえ部材５Ａ、５Ｂは、いずれか一方の遮音板の端部のみ、つまり、５Ａは図２、図４中右側の遮音板２の端部２ａを、同５Ｂは左側の遮音板２の端部２ａのみをそれぞれ個別に固定するように互い違いの配置とされている。各押さえ部材５Ａ、５Ｂは、支柱４の中心側に位置する部位が、上下方向に交互の配置で取付金具６により支柱４に取り付け固定されている（以上、請求項１記載の発明）。もっとも、取付金具６（又は後述するボルト孔又はナット）は、支柱４の車道側の面４ａの中央の上下方向に一直線状（又は一列状）の配置で設けられている（請求項１０記載の発明）。
【００２７】
透明な遮音板２における水平方向両側の端部２ａは板そのままの形態であり、枠材とか支持部材とかは一切無く、直接支柱４の車道側の面４ａへ押さえ部材５で固定される。したがって、支柱４が湾曲していても、その湾曲面に馴染ませて遮音板２をぴったり取り付けることが可能であり、作業性に優れる。一方、上下の水平辺に沿って横枠材７が取り付けられ、風荷重などに対する補強が行われている。図１３と図１４に例示したように、支柱４の側面には予めブラケット１０を溶接などで取り付けておいて、前記横枠材７の端部を前記ブラケット１０へ重ね合わせ、ボルト１１、ナット１２の締結により強固に取付け固定されている。
【００２８】
次に、図２に化粧部材を除いて使用状態を示した押さえ部材５は、図３Ａ、Ｂに示したように、ボルト孔８を一側の縦辺近傍の中央位置へ偏位させて１個だけ設け、その裏側面に前記ボルト孔８と一連の配置で筒状のスペーサー９を取り付けた小片部材である。この押さえ部材５は、一例として縦×横×厚さが１７５×７０×６mm程度に小さく、遮音板２の一方の端部のみを押さえる小片であり、支柱４の車道側の面４ａの中央の上下方向に一列状に設けた取付金具６のピッチ（約２００mm）よりもせいが小さい。
【００２９】
前記の寸法条件を前提として、図２の実施例は、小片としての各押さえ部材５が、支柱４の車道側の面４ａへ当てがわれて隣り合う２枚の遮音板２、２の端部２ａ、２ａの一方だけを個別に押さえて固定するように、支柱４の上下方向に取付金具６の位置を中心として交互に１８０°正反対向きの千鳥状配置とされ、取付金具６で強固に取り付けた構成とされている（請求項２記載の発明）。
【００３０】
したがって、例えば図２中右側の遮音板２が破損して交換の必要が発生した場合には、同右側の遮音板２の端部２ａを固定した押さえ部材５Ａ…のみを全部、取付金具６を緩めて取り外すことにより、当該右側の遮音板２を取り外して交換することが可能であり、左側の（他の）遮音板２の取り付け状態には一切影響を及ぼさない。
【００３１】
前記押さえ部材５による遮音板２の取付構造の詳細を、図５に示した。
透明な遮音板２の端部２ａと支柱４の車道側の面４ａとの間、及び押さえ部材５との間に、遮音板２の熱膨張等による伸縮移動を許容するゴムシート等の弾性材１３が挟み込まれ、取付金具として採用したボルト６が支柱４のナット１４へねじ込まれ固定されている。遮音板２と支柱４の車道側面４ａとの間に位置する弾性材１３は予め支柱に貼り付けておく。遮音板２と押さえ部材５との間の弾性材１３は予め押さえ部材５に貼り付けておくのが作業上好都合である。
【００３２】
なお、上記弾性材１３の存在と実効性をあらしめるために、押さえ部材５は、図５に記載したように、支柱４の車道側の面４ａとの間に、遮音板２の厚さ（約１２mm）と弾性材１３の厚さ（通例３mm位）を加算した長さよりも少し短いスペーサー９を介して締結され、必要以上に強い締め着け状態とならない構造でボルト止めされている（請求項８記載の発明）。
【００３３】
図２のように、支柱４の車道側の面４ａに小片の押さえ部材５が千鳥状の配置で取り付けられた景観を覆い隠す化粧部材１５が、図５に示したように、支柱４の車道側の面４ａに取り付けられている（請求項６記載の発明）。
【００３４】
化粧部材１５は、例えば図２中に符号Ｐで指示したように、押さえ部材５による遮音板２の取り付けを省略した複数位置を利用して支柱４へ取り付けられている。図７Ａ〜Ｃに化粧部材１５の一例を示した通り、前記図２中の符号Ｐの位置毎に、支柱４の車道側の面４ａへ当てがわれるスペーサー９を有し（図７Ｃ）、反対側面には前記スペーサー９の孔と同心配置で作業用孔１７を設けている（図７Ａ）。作業用孔１７からスペーサー９の孔を通じて差し入れたボルト６を、図６のように車道側から支柱４のナット１４へねじ込んで化粧部材１５が取り付けられている（請求項７記載の発明）。
【００３５】
化粧部材１５は、遮音板２の端部２ａを、両端の溝部へ装着したＣＲゴム製の目隠し材１９にて押さえ付ける。化粧部材１５の前記スペーサー９は、支柱４の車道側の面４ａとの間に、遮音板２の厚さと弾性材３の厚さを加算した長さよりも少し長く、ボルト６を締結しても必要以上に強い締め着け状態とならない構造で取り付けが行われている（請求項９記載の発明）。ボルト６をねじ込んだ後に、化粧部材１５の作業用孔１７はゴムキャップ１８で塞がれる（図６）。
図７Ｃ中の符号３０は、図５のように押さえ部材５を取り付けたボルト６の頭を収容して干渉を起こさない大きさと形状で、化粧部材１５の民地側面に、押さえ部材５を取り付けるボルト６と同一の配置で設けた逃げ孔である。
【００３６】
図８は、防音パネル３を支柱４の車道側の面４ａへ取り付けた構造を示している。防音パネル３の水平方向の端部３ａを支柱４の車道側の面４ａへ当てがい、化粧部材１５の目隠し材１９で押さえ付け、化粧部材１５の作業用孔１７を通じて差し入れたボルト６を支柱４のナット１４へねじ込んで強固な取付が行われている。ボルト止め作業のあとで、前記作業用孔１７をゴムキャップ１８で塞ぐことは、図６の場合と同じである。
【００３７】
次に、図４は、やはり小片としての押さえ部材５（５Ａ、５Ｂ）を使用した取付構造の実施例を、化粧部材を除外して示している。押さえ部材５の一側の縦辺近傍の上下２カ所の位置を２本のボルト６、６で止めた構成を特徴とする。その他は図２の構成と共通する。
【００３８】
次に、図９と図１０は、一対の押さえ部材２０Ａと２０Ｂが、支柱４の車道側の面４ａへ当てがわれて隣り合う２枚の遮音板２、２の一方の端部２ａのみを、その全長にわたり、若しくは全長を複数に分割した長さに連続して押さえる長尺物として構成された実施形態を示している。支柱４の中心側に位置して互い違いに噛み合う形状の凹凸部分が、上下方向に交互の配置でボルト６により止めて固定されている（請求項４記載の発明）。
【００３９】
つまり、本発明の取付構造は、押さえ部材の形状、構造及び大きさを、その都度適宜に設計して実施可能という訳である。この押さえ部材２０Ａと２０Ｂの場合にも、支柱４の車道側の面４ａとの間には遮音板２の厚さと弾性材１３の厚さを加算した長さよりも少し短いスペーサー９を介在させてボルト６を締結し、必要以上に強い締め着け状態とならない構造の取付けが行われている。そのため押さえ部材２０Ａと２０Ｂを平面的に見た形状は、図１０の通り、階段状の立ち上がりを有するＺ形状に形成され、スペーサー９の介在を許容している。
【００４０】
次に、図１１は、図２又は図４に示した小片としての押さえ部材５と、図１０に示した長尺物としての押さえ部材２０Ａ（又は２０Ｂ）の組み合わせによる取付構造を示している（請求項５記載の発明）。
【００４１】
長尺物としての押さえ部材２０Ａ（又は２０Ｂ）は、支柱４の車道側の面４ａへ当てがわれて隣り合う２枚の遮音板２、２の一方の端部２ａのみをその全長にわたり、若しくは全長を複数に分割した長さで連続して押さえている。他方の端部２ａを押さえた小片としての押さえ部材５も、それぞれ支柱４の中心側に位置する部位を、支柱４の上下方向に交互の配置としたボルト６で止められ固定されている。
【００４２】
次に、図１２は、小片としての押さえ部材５による取付構造の異なる実施形態を示す。本実施例の場合は、各押さえ部材５は丸みを帯びた楕円形状（又は三角形状、四角形状などでも可）とされ、その一側部がボルト６によって回転可能に止められている（請求項３記載の発明）。この押さえ部材５は、前記ボルト止め位置を中心として支柱４の車道側の面４ａと平行な面内で回転可能に構成されている。したがって、上下に隣接する押さえ部材５、５同士の間隔は、各押さえ部材５を約１８０°回転させて、まるで額縁の裏当て板を止めるクリップの如く使用できる配置とされている。
【００４３】
よって、本実施例の場合には、遮音板２を取り付けたり交換等する場合には、ボルト６を少し緩めた上で、点線で図示したように１８０°回転させることによって押さえ部材５を逃がし、或いは再び１８０°回転して遮音板２を固定する使用法を実施でき、押さえ部材５自身の取り付け取り外しの手間を省くことが可能である。
【００４４】
ところで、道路用防音壁の支柱４としては、従来からＨ形鋼又は溝形鋼或いは角鋼管その他が適材適所に使用されている。図示した各実施例の支柱４は、遮音材２及び防音パネル３を支柱４の車道側の面４ａへ取り付けることを前提条件として、水平断面が角形状のいわゆる角管を使用した例（請求項１１記載の発明）を示している。
【００４５】
特に、図１３に示した実施例は、車道側の面４ａが細幅（例えば１５０mm位）で、奥行き寸法が大きく（例えば３５０mm位）扁平な角形状の支柱４を使用した例である（請求項１２記載の発明）。この支柱４は、車道側から見た支柱の存在感を希釈して景観の良さを高め、且つ防音壁に働く面外方向の風荷重に対して強度が大きい合理的な構成となっている。
【００４６】
角形状（角管形状）の支柱４を使用する場合の問題点は、押さえ部材５及び化粧部材１５などをボルト止めする場合に必要なナット１４を、角管の内側面にどうやって用意するかであるが、図１５と図１６にその解決策を示した。
【００４７】
即ち、角（角管）形状の支柱４の車道側の面４ａの中央位置の各ボルト止め位置にボルト孔２１が所定のピッチで設けられている。そして、ボルト孔２１に隣接して比較的大径（一例として直径６０mm位）のナット取付用孔２２が設けられている。一方、前記ナット取付用孔２２を通じて挿入可能な大きさ、形状で、支柱４の管壁を弾力的に挟み付けて同ナット取付用孔２２の縁へ取り付けることが可能なＵ字形状のクリップ２３の片面にナット１４を固着して成るクリップナット２５が好適に使用される。
【００４８】
クリップナット２５は、ナット１４が管内側となるように前記ナット取付用孔２２を通じて挿入し、ボルト止め位置のボルト孔２１とナット１４の中心が一致するように設置する。その設置状態を図１６に示した。クリップ２３において、ナット１４を固着した面とは反対側の面には、前記ナット１４のネジ孔と中心が一致してボルト６を出し入れ自在な大きさ、形状のボルト通し孔２４が設けられている。したがって、前記のようにクリップナット２５を使用して支柱４の管内面側にナット１４を用意した後は、車道側から前記ナット１４へボルト６をねじ込んで上記した押さえ部材５や化粧部材１５の取り付け固定を確実に行えるのである（請求項１４記載の発明）。
【００４９】
勿論、本発明の取り付け構造は、支柱４として角管を使用せず、Ｈ形鋼や溝形鋼などを使用する場合には、ナットの用意の問題もなく、一層容易に実施できるのである。
【００５０】
【発明の効果】
請求項１〜１４に記載した発明に係る道路用防音壁における遮音板の取付構造は、支柱の水平断面がＨ形鋼、溝形鋼、或いは角形状のいずれであっても、また、支柱の車道側の面が湾曲している場合でも何等変わりなく、透明な遮音板の取り付け、取り外し作業を車道側から簡便に能率良く行える。しかも、交換等の修理が必要な遮音板はその遮音板だけを、即ち、他の遮音板の取付け状態には一切影響を及ぼすことなく取り外して交換修理を軽便に迅速に行える。
【００５１】
また、請求項８、９記載の発明によれば、ボルト止め位置にスペーサーを介在させるので、遮音板は適度な押圧力によって支柱へ取り付けられ、安定した取付け状態となる。
【００５２】
請求項１１記載の発明によれば、支柱を角形形状としたことにより、従来一般に道路用防音壁に使用されているＨ形鋼の支柱による遮音壁とは、支柱の存在感を希釈してスマートな美感を生じさせる効果がある。
【００５３】
とりわけ請求項１２記載の発明のように、角形支柱の断面を、車道の面が細幅とすると、車両の搭乗者らから見た支柱の存在感を一層軽減させる効果がある。
【００５４】
しかも、請求項１４記載の発明によれば、支柱が閉断面、即ち、角形であっても、支柱に穴をあけるだけで市販のクリップナットおよびボルトで車道側から特定の遮音板のみをボルト止め手段で容易に取り付け、取り外しができる効果を発揮する。
【図面の簡単な説明】
【図１】本発明が実施される道路用防音壁の一例を示した斜視図である。
【図２】遮音板の取付構造の一例を化粧板を除外して示した立面図である。
【図３】Ａ、Ｂは押さえ部材の一例を示した正面図と側面図である。
【図４】遮音板の取付構造の異なる例を化粧板を除外して示した立面図である。
【図５】図１のＶ−Ｖ線矢視の拡大断面図である。
【図６】図１のVI−VI線矢視の拡大断面図である。
【図７】Ａ、Ｂ、Ｃは化粧部材の正面図と側面図及び背面図である。
【図８】図１のVIII−VIII線矢視の拡大断面図である。
【図９】遮音板の取付構造の異なる例を示した平面図である。
【図１０】図９の立面図である。
【図１１】遮音板の取付構造の更に異なる例を示した立面図である。
【図１２】遮音板の取付構造の更に異なる例を示した立面図である。
【図１３】図１のIII−III線矢視の拡大断面図である。
【図１４】図１３のIV−IV線矢視の断面図である。
【図１５】支柱へクリップナットを取り付けるための要領を説明する斜視図である。
【図１６】支柱へクリップナットを取り付けた状態の断面図である。
【符号の説明】
２遮音板
４支柱
４ａ遮音板の端部
６取付金具（ボルト）
５押さえ部材
２０Ａ長尺の押さえ部材
２０Ｂ長尺の押さえ部材
１５化粧部材
９スペーサー
２２ナット取付用孔
２３クリップ
１４ナット
１３弾性材[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to a technical field of a structure in which a transparent sound insulation plate is attached to a visual field range of a driver of a vehicle traveling on a road in a road noise barrier constructed along a road.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there are various well-known and widely practiced adoption of a transparent sound insulation board for a road noise barrier. For example,
(1) In JP-A-6-33425, a peripheral frame member is attached in advance to the four sides of a sound insulating plate made of a transparent synthetic resin plate or the like, and a mounting bolt is set up on a road side surface of a support column. A soundproof wall is disclosed in which a mounting hole (bolt hole) provided in advance is fitted to the bolt of the column and attached by tightening a nut.
(2) In Japanese Patent Application Laid-Open No. 5-187004, the vertical sides of the sound insulation plate made of transparent acrylic glass or the like are overlapped on the road side of the column, and fixed together with bolts screwed into the column from the road side. A road noise barrier is disclosed.
(3) In Japanese Patent Application Laid-Open No. 10-237829, through holes are provided in advance around the sound insulation plate made of a transparent synthetic resin plate, glass plate, etc., on the road side surface of each trunk edge that connects the upper and lower sides of the column and the adjacent column. Prepare a pin with a bowl-shaped head upright, fit the through hole of the sound insulation board to the pillar and the pin of the trunk edge, and attach the support member from the road side to the head of the pin protruding from the through hole of the sound insulation board A soundproof wall mounted and fixed is disclosed.
[0003]
[Problems to be solved by the invention]
Recently, as illustrated in FIG. 1, a transparent sound insulating plate 2 is attached to the lower part (lower half), which is the view range of the driver of the vehicle traveling on the road 1, to widen the field of view. Soundproof panel 3 is attached to enhance the sound insulation and sound absorption effect, and the soundproof wall is configured to bend so as to cover the road side as a whole and to confine noise generated on the road to enhance the soundproof effect. It is being requested.
[0004]
All of the conventional techniques introduced in the above (1) to (3) disclose a structure in which a transparent sound insulation wall is employed and is attached to the support column from the roadway side.
[0005]
However, as a means for attaching a sound insulating plate made of a transparent synthetic resin plate, a glass plate or the like to the support column, if a frame material or a support material is attached to the four circumferences of the sound insulating plate as in the above-described prior art (1) or (3), As illustrated in FIG. 1, when the roadway side surface of the support column 4 is curved, it is indispensable to form the frame member or the support material in advance by the same curvature as the support column 4. It is compulsory, and the work of the on-site adjustment is troublesome.
[0006]
Moreover, like the above-mentioned prior art (2), the horizontal ends of the two adjacent sound insulation plates are overlapped on the road side surface of the column, and are commonly fixed with bolts screwed from the road side to the column. Although the structure is reasonable, for example, if the soundproof wall is damaged due to a car accident during operation, and the bolts are loosened and removed to perform replacement repair, not only the sound insulation plate that needs to be replaced, but also a sound replacement However, even a useless sound insulation plate is detached, and it is in a disjointed state and handling is troublesome, and workability is poor.
[0007]
Therefore, the object of the present invention is that the transparent sound insulation board can be easily attached and detached from the road side, and only the sound insulation board that needs to be replaced affects the attachment state of other sound insulation boards. It is intended to provide a structure for mounting a sound insulation board on a soundproof wall for roads, which can be removed and replaced and repaired quickly and easily.
[0008]
The next object of the present invention is not only the case where the support column is an H-shaped steel or a grooved steel, but also a square tube or the like, and a road on which the sound insulating plate can be appropriately attached even if the support column is curved. It is providing the attachment structure of the sound-insulation board in the sound-insulation wall.
[0009]
[Means for Solving the Problems]
As a means for solving the above-mentioned problem, the sound insulating plate mounting structure in the road noise barrier according to the invention described in claim 1 is:
In the structure to attach the sound insulation board on the sound barrier for road to the column,
The sound insulation plate is applied to the surface of the column on the side of the roadway so that the end of the sound insulation plate is placed so that the ends of the adjacent sound insulation plates do not overlap each other. Being fixed,
The pressing member includes a pair of separately fixing the end portions of the two sound insulating plates adjacent to each other on the roadway side surface of the support, and the pair of pressing members fixes only the end portion of one of the sound insulating plates. The part located in the center side of the support | pillar of each holding | suppressing member is being fixed to the support | pillar by the attachment metal fitting by the alternately arrangement | positioning to an up-down direction.
[0010]
The invention according to claim 2 is the mounting structure of the sound insulating plate in the noise barrier for road according to claim 1,
The holding member is configured as a small piece that is applied to the roadway side surface of the column and holds only one end of two adjacent sound insulation plates, and is bolted in a staggered arrangement alternately in the vertical direction of the column. It is characterized by.
[0011]
The invention according to claim 3 is the mounting structure of the sound insulating plate in the noise barrier for road according to claim 2,
The pressing member as the small piece is configured to be rotatable in a plane parallel to the surface on the roadway side of the column with the bolting position as a center.
[0012]
The invention according to claim 4 is the mounting structure of the sound insulating plate in the noise barrier for road according to claim 1,
The pressing member is a long length that is applied to the roadway side surface of the column and presses only one end of two adjacent sound insulation plates continuously over the entire length or the length divided into a plurality of lengths. It is comprised as a thing, The site | part located in the center side of a support | pillar is bolted by the alternating arrangement in the up-down direction, It is characterized by the above-mentioned.
[0013]
The invention according to claim 5 is the mounting structure of the sound insulating plate in the noise barrier for road according to claim 1,
The pressing member is a long object that is applied to the surface on the roadway side of the column and continuously presses only one end of two adjacent sound insulation plates over the entire length or the length divided into a plurality of lengths. And a small piece that holds down the other end, and each of them is characterized in that the portions positioned on the center side of the support are bolted in an alternating arrangement in the vertical direction of the support.
[0014]
The invention according to claim 6 is the mounting structure of the sound insulating plate in the noise barrier for road according to any one of claims 1 to 5,
A decorative member for covering the pressing member bolted to the support is attached to the surface of the support on the roadway side.
[0015]
The invention according to claim 7 is the mounting structure of the sound insulating plate in the noise barrier for road according to claim 6,
The decorative member is characterized in that it is attached by bolting from the roadway side to a plurality of positions where the mounting of the sound insulating plate by the pressing member is omitted.
[0016]
The invention according to claim 8 is the mounting structure of the sound insulating plate in the noise barrier for road according to any one of claims 2 to 7,
The pressing member is bolted to a surface of the support on the roadway side via a spacer that is slightly shorter than the length obtained by adding the thickness of the sound insulating plate and the thickness of the elastic material.
[0017]
The invention according to claim 9 is the mounting structure of the sound insulation board in the soundproof wall for road according to claim 6 or 7,
The decorative member is bolted to the surface of the support on the roadway side via a spacer that is slightly longer than the sum of the thickness of the sound insulating plate and the thickness of the elastic material.
[0018]
The invention according to claim 10 is the mounting structure of the sound insulating plate in the noise barrier for road according to any one of claims 2 to 9,
The bolt holes of the columns are provided in a line in the vertical direction at the center of the surface of the column on the roadway side.
[0019]
The invention according to claim 11 is the mounting structure of the sound insulating plate in the noise barrier for road according to any one of claims 1 to 10,
The horizontal cross section of the support is characterized by a square shape.
[0020]
The invention according to claim 12 is the mounting structure of the sound insulating plate in the noise barrier for road according to any one of claims 1 to 11,
The horizontal cross section of the column is characterized in that the road surface side has a narrow square shape.
[0021]
The invention according to claim 13 is the mounting structure of the sound insulating plate in the noise barrier for road according to any one of claims 1 to 12,
The support column has a shape curved toward the roadway side, and the horizontal end of the sound insulating plate is attached in a curved state along the roadway side surface of the curved support column.
[0022]
The invention according to claim 14 is the mounting structure of the sound insulating plate in the noise barrier for road according to any one of claims 1 to 13,
The horizontal cross section of the column has a square shape, and a nut mounting hole is provided adjacent to the bolt hole provided at each bolting position. The nut mounting hole can be inserted through the nut mounting hole and sandwiched between the tube walls. A clip nut formed by fixing a nut to one side of a U-shaped clip that can be attached to the edge is installed so that the center of the nut coincides with the bolt hole at the bolting position on the inner surface of the pipe. The pressing member or the decorative member is attached by a bolt screwed into the nut from the surface.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Below, with reference to drawings, the embodiment of the attachment structure of the sound insulation board in the soundproof wall for roads concerning the invention described in claims 1-14 is described.
[0024]
FIG. 1 shows an embodiment of a road soundproof wall in which a transparent sound insulating plate 2 made of polycarbonate or the like is attached to the lower half and a soundproof panel 3 is attached to the upper half. The support column 4 in the range where the transparent sound insulation plate 2 in the lower half is attached is greatly curved toward the roadway side, and the sound insulation plate 2 is attached in a curved surface along the curved surface of the support column 4. On the other hand, the column 4 in the range where the upper half soundproof panel 3 is attached is substantially linear, and the soundproof panel 3 is attached in a flat shape. The sound insulation plate 2 and the sound insulation panel 3 are each configured to be attached and detached as work from the roadway side. Although the illustrated horizontal cross section of the support column 4 has a square shape, the present invention is not limited to this, and the existing H-shaped steel, groove-shaped steel, and the like can be used in the same manner.
[0025]
2 and 4 show that the end portions 2a on both sides in the horizontal direction of the transparent sound insulating plate 2 made of polycarbonate or the like are connected to the surface 4a on the roadway side of the column 4 and the end portions 2a of the two adjacent sound insulating plates 2, 2. It shows that it is applied by the arrangement | positioning which left the some space | interval S in the center part of the support | pillar 4 so that 2a may not overlap. Then, the end portions 2a and 2a of the two sound insulating plates 2 and 2 are fixedly attached by a pressing member 5 attached to the support column 4 from the roadway side by a mounting bracket 6.
[0026]
The pressing member 5 is composed of a pair of 5A and 5B which are applied to the road surface 4a of the support column 4 and fix the end portions 2a and 2a of the two adjacent sound insulating plates 2 and 2 separately on the left and right. ing. The holding members 5A and 5B forming a pair (or two groups) are only the end of one of the sound insulation plates, that is, 5A is the end 2a of the right sound insulation plate 2 in FIGS. 5B are staggered so that only the end 2a of the left sound insulating plate 2 is individually fixed. Each pressing member 5A, 5B is attached and fixed to the support column 4 by the mounting bracket 6 in a position located on the center side of the support column 4 in an alternating arrangement in the vertical direction (the invention according to claim 1 above). However, the mounting bracket 6 (or a bolt hole or nut described later) is provided in a straight line (or line) arrangement in the vertical direction in the center of the surface 4a on the roadway side of the support column 4 (claim 10). invention).
[0027]
The ends 2a on both sides in the horizontal direction of the transparent sound insulating plate 2 are in the form of the plate as it is, and there is no frame material or support member, and it is directly fixed to the surface 4a on the roadway side of the column 4 by the pressing member 5. Therefore, even if the support | pillar 4 is curving, it can adapt to the curved surface and can attach the sound-insulating board 2 exactly, and is excellent in workability | operativity. On the other hand, the horizontal frame member 7 is attached along the upper and lower horizontal sides, and reinforcement against wind load and the like is performed. As illustrated in FIGS. 13 and 14, the bracket 10 is attached to the side surface of the support column 4 by welding or the like in advance, and the end portion of the horizontal frame member 7 is overlapped with the bracket 10, and the bolt 11 and the nut 12. It is firmly attached and fixed by fastening.
[0028]
Next, as shown in FIGS. 3A and 3B, the pressing member 5 shown in FIG. 2 excluding the decorative member is used by shifting the bolt hole 8 to the central position in the vicinity of the vertical side on one side. It is a small piece member in which only one piece is provided and a cylindrical spacer 9 is attached to the back side surface of the bolt hole 8 in a series of arrangements. The pressing member 5 is a small piece that, for example, has a length × width × thickness as small as about 175 × 70 × 6 mm, and holds only one end of the sound insulating plate 2, and is located at the center of the road surface side surface 4 a of the column 4. The pitch is smaller than the pitch (about 200 mm) of the mounting brackets 6 provided in a line in the vertical direction.
[0029]
Assuming the above dimensional conditions, the embodiment of FIG. 2 is configured such that each pressing member 5 as a small piece is applied to the surface 4a on the roadway side of the column 4 and the end portions of the two sound insulating plates 2 and 2 adjacent to each other. 2a and 2a so that only one of 2a and 2a is individually pressed and fixed in the vertical direction of the support column 4 is alternately staggered 180 degrees around the position of the mounting bracket 6 and firmly attached by the mounting bracket 6 (Invention of claim 2).
[0030]
Therefore, for example, when the right sound insulating plate 2 in FIG. 2 is damaged and needs to be replaced, only the pressing member 5A to which the end 2a of the right sound insulating plate 2 is fixed is attached to the mounting bracket 6. By loosening and removing, the right sound insulation plate 2 can be removed and replaced, and the attachment state of the left (other) sound insulation plate 2 is not affected at all.
[0031]
The details of the mounting structure of the sound insulating plate 2 by the pressing member 5 are shown in FIG.
An elastic material such as a rubber sheet that allows expansion / contraction movement due to thermal expansion or the like of the sound insulation plate 2 between the end 2a of the transparent sound insulation plate 2 and the road surface 4a of the support column 4 and between the pressing member 5 13 is sandwiched, and the bolt 6 adopted as the mounting bracket is screwed into the nut 14 of the support column 4 and fixed. The elastic material 13 positioned between the sound insulating plate 2 and the roadway side surface 4a of the support column 4 is attached in advance to the support column. It is convenient in terms of work that the elastic member 13 between the sound insulating plate 2 and the pressing member 5 is previously attached to the pressing member 5.
[0032]
In order to show the presence and effectiveness of the elastic member 13, the pressing member 5 is provided between the surface 4a of the support column 4 on the roadway side as shown in FIG. About 12 mm) and the thickness of the elastic material 13 (usually about 3 mm), which is fastened via a spacer 9 slightly shorter than the length, and is bolted with a structure that does not result in a tightening state that is stronger than necessary. 8).
[0033]
As shown in FIG. 2, the decorative member 15 that covers the scenery in which the small pressing members 5 are attached to the surface 4 a on the roadway side of the column 4 in a staggered arrangement is used as shown in FIG. 5. It is attached to the side surface 4a (the invention according to claim 6).
[0034]
The decorative member 15 is attached to the support column 4 by using a plurality of positions where the attachment of the sound insulating plate 2 by the pressing member 5 is omitted, for example, as indicated by the symbol P in FIG. As shown in FIG. 7A to C as an example of the decorative member 15, each of the positions indicated by the symbol P in FIG. 2 has a spacer 9 applied to the surface 4a on the roadway side of the column 4 (FIG. 7C). A working hole 17 is provided on the side surface in a concentric arrangement with the hole of the spacer 9 (FIG. 7A). The decorative member 15 is attached by screwing the bolt 6 inserted from the working hole 17 through the hole of the spacer 9 into the nut 14 of the column 4 from the roadway side as shown in FIG. 6 (invention of claim 7).
[0035]
The decorative member 15 presses the end 2a of the sound insulating plate 2 with a CR rubber blindfold 19 attached to the grooves on both ends. The spacer 9 of the decorative member 15 is slightly longer than the sum of the thickness of the sound insulating plate 2 and the thickness of the elastic member 3 between the support 4 and the surface 4a on the roadway side. The attachment is carried out with a structure that does not result in a tightening state stronger than necessary (the invention according to claim 9). After the bolt 6 is screwed in, the working hole 17 of the decorative member 15 is closed with a rubber cap 18 (FIG. 6).
Reference numeral 30 in FIG. 7C is a size and shape that accommodates the head of the bolt 6 to which the pressing member 5 is attached as shown in FIG. 5 and does not cause interference, and the pressing member 5 is attached to the private side surface of the decorative member 15. It is an escape hole provided in the same arrangement as the bolt 6.
[0036]
FIG. 8 shows a structure in which the soundproof panel 3 is attached to the road surface 4 a of the support column 4. The horizontal end 3a of the soundproof panel 3 is applied to the surface 4a on the roadway side of the support column 4, pressed by the blindfold 19 of the decorative member 15, and the bolt 6 inserted through the work hole 17 of the decorative member 15 is supported by the support column 4. The nut 14 is screwed into the nut 14 and is firmly attached. After the bolting operation, the work hole 17 is closed with the rubber cap 18 as in the case of FIG.
[0037]
Next, FIG. 4 shows an embodiment of the mounting structure using the pressing member 5 (5A, 5B) as a small piece, excluding the decorative member. The structure is characterized in that the positions of two upper and lower positions in the vicinity of the vertical side on one side of the pressing member 5 are fixed by two bolts 6 and 6. Others are common to the configuration of FIG.
[0038]
Next, FIG. 9 and FIG. 10 show that only one end 2a of the two sound insulating plates 2 and 2 adjacent to each other when the pair of pressing members 20A and 20B is applied to the surface 4a of the support column 4 on the roadway side. The embodiment comprised as the elongate thing which presses down continuously over the full length or the length which divided | segmented the full length into plurality is shown. Concave and convex portions that are located on the center side of the support column 4 and engage with each other alternately are fixed with bolts 6 alternately arranged in the vertical direction (invention of claim 4).
[0039]
That is, the mounting structure of the present invention can be implemented by appropriately designing the shape, structure, and size of the pressing member each time. Also in the case of these pressing members 20A and 20B, a spacer 9 slightly shorter than the length obtained by adding the thickness of the sound insulating plate 2 and the thickness of the elastic member 13 is interposed between the surface 4a of the column 4 on the roadway side. The bolt 6 is fastened, and a structure that is not tightened more than necessary is attached. Therefore, the shape of the pressing members 20A and 20B when viewed in plan is formed in a Z shape having a stepped rise as shown in FIG. 10 and allows the spacer 9 to be interposed.
[0040]
Next, FIG. 11 shows an attachment structure by a combination of the pressing member 5 as a small piece shown in FIG. 2 or 4 and the pressing member 20A (or 20B) as a long object shown in FIG. Invention of Claim 5).
[0041]
The pressing member 20A (or 20B) as a long object is applied to the surface 4a on the roadway side of the support column 4 and only one end portion 2a of the two adjacent sound insulation plates 2 and 2 extends over its entire length, or The entire length is continuously divided into multiple lengths. The holding members 5 as small pieces that hold down the other end 2a are also fixed and fixed by bolts 6 in which the portions located on the center side of the column 4 are alternately arranged in the vertical direction of the column 4.
[0042]
Next, FIG. 12 shows an embodiment in which the mounting structure by the pressing member 5 as a small piece is different. In the case of the present embodiment, each pressing member 5 has a rounded oval shape (or a triangular shape, a quadrangular shape, etc.), and one side portion thereof is rotatably supported by a bolt 6 (claims). 3). The pressing member 5 is configured to be rotatable in a plane parallel to the road surface 4a of the support column 4 around the bolting position. Accordingly, the interval between the pressing members 5 adjacent to each other in the vertical direction is arranged so that each pressing member 5 can be used like a clip that rotates the pressing members 5 by about 180 ° to stop the frame backing plate.
[0043]
Therefore, in the case of the present embodiment, when the sound insulating plate 2 is attached or exchanged, the bolt 6 is slightly loosened, and then the holding member 5 is released by rotating 180 ° as shown by the dotted line. Alternatively, the use of fixing the sound insulating plate 2 by rotating it 180 ° again can be carried out, and it is possible to save the trouble of attaching and removing the pressing member 5 itself.
[0044]
By the way, as the support | pillar 4 of the noise barrier for roads, the H-shaped steel, the grooved steel, the square steel pipe, etc. are conventionally used for the right material in the right place. The column 4 of each of the illustrated embodiments uses a so-called square tube having a square horizontal cross section on the precondition that the sound insulating material 2 and the sound insulation panel 3 are attached to the road surface 4a of the column 4 (claim). 11).
[0045]
In particular, the embodiment shown in FIG. 13 is an example in which a flat prismatic column 4 having a narrow road surface 4a (for example, about 150 mm) and a large depth dimension (for example, about 350 mm) is used. Item 12). This support column 4 has a rational configuration in which the presence of the support column viewed from the roadway side is diluted to enhance the scenery and the strength is high against an out-of-plane wind load acting on the soundproof wall.
[0046]
The problem with the use of the square-shaped (square tube-shaped) support column 4 is how to prepare the nut 14 necessary for bolting the holding member 5 and the decorative member 15 on the inner surface of the square tube. There is a solution to this problem in FIG. 15 and FIG.
[0047]
That is, the bolt holes 21 are provided at a predetermined pitch at each bolting position at the center position of the surface 4a on the roadway side of the column (square tube) -shaped support column 4. A nut mounting hole 22 having a relatively large diameter (as an example, a diameter of about 60 mm) is provided adjacent to the bolt hole 21. On the other hand, a U-shaped clip 23 having a size and shape that can be inserted through the nut mounting hole 22 and capable of elastically sandwiching the tube wall of the support column 4 and mounting it to the edge of the nut mounting hole 22. A clip nut 25 formed by fixing the nut 14 on one side is preferably used.
[0048]
The clip nut 25 is inserted through the nut mounting hole 22 so that the nut 14 is on the inner side of the pipe, and is installed so that the center of the bolt hole 21 and the nut 14 at the bolt fastening position coincide. The installation state is shown in FIG. The clip 23 is provided with a bolt through-hole 24 having a size and a shape that allows the bolt 6 to be inserted and removed at the surface opposite to the surface to which the nut 14 is fixed. Yes. Therefore, after preparing the nut 14 on the pipe inner surface side of the support column 4 using the clip nut 25 as described above, the bolt 6 is screwed into the nut 14 from the roadway side and the holding member 5 and the decorative member 15 described above are screwed. The mounting and fixing can be performed reliably (the invention according to claim 14).
[0049]
Needless to say, the mounting structure of the present invention can be implemented more easily without the problem of preparing a nut when a square tube is not used as the support column 4 and an H-shaped steel or a grooved steel is used.
[0050]
【The invention's effect】
The mounting structure of the sound insulating plate in the soundproof wall for road according to the invention described in claims 1 to 14 can be used regardless of whether the horizontal cross section of the support is H-shaped steel, groove-shaped steel, or square shape. Even when the road surface is curved, the transparent sound insulation board can be attached and removed easily and efficiently from the road side. In addition, the sound insulation plate that needs repair such as replacement can be removed and replaced quickly and easily without affecting the mounting state of the other sound insulation plates.
[0051]
Further, according to the inventions of claims 8 and 9, since the spacer is interposed at the bolting position, the sound insulating plate is attached to the support column by an appropriate pressing force, and a stable attachment state is obtained.
[0052]
According to the eleventh aspect of the present invention, since the support column is formed in a square shape, the sound insulation wall made of the H-shaped steel support column generally used for a road noise barrier in the past is diluted with the presence of the support column and is smart. It has the effect of producing aesthetics.
[0053]
In particular, as in the invention described in claim 12, when the cross section of the square support is made narrow in the surface of the roadway, there is an effect of further reducing the presence of the support as viewed from the passengers of the vehicle.
[0054]
In addition, according to the invention described in claim 14, even if the support column has a closed cross-section, that is, a square shape, only a specific sound insulation board is bolted from the roadway side with a commercially available clip nut and bolt only by making a hole in the support column. Demonstrates the effect of being easily attached and removed by means.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a soundproof wall for roads in which the present invention is implemented.
FIG. 2 is an elevational view illustrating an example of a sound insulating plate mounting structure excluding a decorative plate.
FIGS. 3A and 3B are a front view and a side view showing an example of a pressing member. FIGS.
FIG. 4 is an elevational view showing a different example of the sound insulation board mounting structure excluding the decorative board.
5 is an enlarged cross-sectional view taken along line VV in FIG.
6 is an enlarged cross-sectional view taken along the line VI-VI in FIG.
7A, B, and C are a front view, a side view, and a rear view of a decorative member, respectively.
8 is an enlarged cross-sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a plan view showing a different example of the sound insulating plate mounting structure.
10 is an elevational view of FIG. 9;
FIG. 11 is an elevational view showing still another example of the sound insulating plate mounting structure.
FIG. 12 is an elevational view showing still another example of the sound insulating plate mounting structure.
13 is an enlarged cross-sectional view taken along line III-III in FIG.
14 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 15 is a perspective view illustrating a procedure for attaching a clip nut to a support post.
FIG. 16 is a cross-sectional view of a state in which a clip nut is attached to a support column.
[Explanation of symbols]
2 Sound insulation plate 4 Strut 4a Sound insulation plate end 6 Mounting bracket (bolt)
5 Holding member 20A Long pressing member 20B Long pressing member 15 Cosmetic member 9 Spacer 22 Nut mounting hole 23 Clip 14 Nut 13 Elastic material

Claims

In the structure to attach the sound insulation board on the sound barrier for road to the column,
The sound insulation plate is applied to the surface of the column on the side of the roadway so that the end of the sound insulation plate is placed so that the ends of the adjacent sound insulation plates do not overlap each other. Being fixed,
The pressing member includes a pair of separately fixing the end portions of the two sound insulating plates adjacent to each other on the roadway side surface of the support, and the pair of pressing members fixes only the end portion of one of the sound insulating plates. A structure for mounting a sound insulation board on a soundproof wall for roads, wherein the portions located on the center side of the support columns of each pressing member are fixed to the support columns by mounting brackets alternately arranged in the vertical direction .

The holding member is configured as a small piece that is applied to the roadway side surface of the column and holds only one end of two adjacent sound insulation plates, and is bolted in a staggered arrangement alternately in the vertical direction of the column. The sound insulation board mounting structure in the soundproof wall for road according to claim 1, wherein the sound insulation board is attached.

The road noise barrier according to claim 2, wherein the pressing member as the small piece is configured to be rotatable in a plane parallel to the roadway side surface of the column with the bolting position as a center. Mounting structure of sound insulation board.

The pressing member is a long length that is applied to the roadway side surface of the column and presses only one end of two adjacent sound insulation plates continuously over the entire length or the length divided into a plurality of lengths. The sound insulation board mounting structure for a soundproof wall for a road according to claim 1, wherein the structure is configured as an object, and a portion located on the center side of the support is bolted in an alternating arrangement in the vertical direction.

The pressing member is a long object that is applied to the surface on the roadway side of the column and continuously presses only one end of two adjacent sound insulation plates over the entire length or the length divided into a plurality of lengths. And a small piece for pressing the other end, each of which is located at the center side of the column and is bolted in an alternating arrangement in the vertical direction of the column. Mounting structure of the sound insulation board in the soundproof wall for road described in 2.

The sound insulation board in the sound insulation wall for a road according to any one of claims 1 to 5, wherein a decorative member for covering the pressing member bolted to the support is attached to a surface on the roadway side of the support. Mounting structure.

The decorative member is attached by bolting from the roadway side to a plurality of positions where the installation of the sound insulating plate by the pressing member is omitted, and the sound insulating plate is attached to the soundproof wall for a road according to claim 6. Construction.

The pressing member is bolted to a surface of the support on the roadway side via a spacer that is slightly shorter than the length obtained by adding the thickness of the sound insulating plate and the thickness of the elastic material. A structure for mounting a sound insulation board on a road noise barrier described in any one of 2 to 7.

The decorative member is bolted to a surface on the roadway side of the support via a spacer that is slightly longer than a length obtained by adding the thickness of the sound insulating plate and the thickness of the elastic material. 6. A sound insulation board mounting structure on a road noise barrier described in 6 or 7.

The soundproof wall for a road according to any one of claims 2 to 9, wherein the bolt holes of the pillars are arranged in a line in the vertical direction at the center of the surface on the roadway side of the pillars. Sound insulation board mounting structure.

The horizontal structure of a support | pillar is a square shape, The mounting structure of the sound-insulation board in the noise barrier for roads as described in any one of Claims 1-10 characterized by the above-mentioned.

The sound insulating plate mounting structure for a soundproof wall for a road according to any one of claims 1 to 11, wherein the horizontal cross section of the column has a narrow square shape on the road surface side.

The support column has a shape curved toward the roadway side, and the horizontal end portion of the sound insulating plate is attached in a curved state along the roadway side surface of the curved support column. A structure for mounting a sound insulation board on a road noise barrier described in 1.

The horizontal cross section of the column has a square shape, and a nut mounting hole is provided adjacent to the bolt hole provided at each bolting position. The nut mounting hole can be inserted through the nut mounting hole and sandwiched between the tube walls. A clip nut formed by fixing a nut to one side of a U-shaped clip that can be attached to the edge is installed so that the center of the nut coincides with the bolt hole at the bolting position on the inner surface of the pipe. The mounting structure of the sound insulation board in the noise barrier for roads according to any one of claims 1 to 13, wherein the pressing member or the decorative member is attached by a bolt screwed into the nut from a surface.