JP3662846B2

JP3662846B2 - How to refresh the sound barrier

Info

Publication number: JP3662846B2
Application number: JP2000398217A
Authority: JP
Inventors: 塩徳二大
Original assignee: 大塩徳二
Priority date: 2000-11-08
Filing date: 2000-12-27
Publication date: 2005-06-22
Anticipated expiration: 2020-12-27
Also published as: JP2002206211A

Description

【０００１】
【発明の属する技術分野】
本発明は、高速道路等に沿って設置された防音壁のリフレッシュ方法に関するものであり、さらに具体的には、上記防音壁を構成する多孔板の孔やよろい板の傾斜板部を利用した簡単なリフレッシュ方法に関するものである。
【０００２】
【従来の技術】
高速道路等に沿って設置された防音壁は、長期にわたる使用によりその表面の多孔板が車の排気ガスや日光の直射等に曝され、最初は白かったものが極端に汚れて黒ずんでくる。そこで、汚れが著しいものについてはリフレッシュすることが望まれるが、道路を車が高速で走行している状態で長期にわたり防音壁表面の洗浄や再塗装を行うことは現実的に困難であり、また、防音壁自体を解体して再設置するのは、多量の廃棄物が生じるばかりでなく、不経済である。
また、上記防音壁表面の多孔板は、防音壁内に充填した吸音材の押さえになっているので、表面の多孔板のみを交換するのは、その工事が非常に煩雑であり、工期が長期化する可能性がある。
一方、既設の防音壁は、その両端を柱部材によって保持させているが、この柱部材の列がドライバーの高速運転に悪影響を及ぼす可能性が指摘され、そのため、防音壁のリフレッシュと同時にこの問題をも解決することが望まれる。
【０００３】
【発明が解決しようとする課題】
本発明は、このような問題を解決した防音壁のリフレッシュ方法を提供しようとするものであり、従って、本発明が解決しようとする技術的課題は、短期間の工事により簡単且つ安価に、しかも廃棄物を発生させることなく防音壁をリフレッシュする方法を提供することにある。
本発明の他の技術的課題は、既設の防音壁の多孔板の孔やよろい板の傾斜板部を利用して簡単且つ迅速に工事を行うことができる防音壁のリフレッシュ方法を提供することにある。
本発明の他の技術的課題は、防音壁のリフレッシュと同時に、ドライバーの目の疲れにより高速運転に悪影響を及ぼす可能性がある防音壁の柱部材の列が、運転中のドライバーの視野に入らないようにする防音壁のリフレッシュ方法を提案することにある。
【０００４】
【課題を解決するための手段】
上記課題を解決するための本発明の防音壁のリフレッシュ方法は、既設の防音壁表面の多孔板における孔縁に、該多孔板の表面と該防音壁表面を覆って設けられる新多孔板との間の間隔を確保するためのスペーサ部を有する係止具を係止させ、該係止具により既設の多孔板の表面上に上記間隔を置いて上記新多孔板を固定し、あるいは、既設の防音壁表面のよろい板における傾斜板部に、該よろい板の表面と該防音壁表面を覆って設けられる新多孔板との間の間隔を確保するためのスペーサ部を有する係止具を係止させ、該係止具により既設のよろい板の表面との間に上記間隔を置いて上記新多孔板を固定することを特徴とするものである。
【０００５】
上記構成を有する防音壁のリフレッシュ方法は、既設の防音壁の表面の多孔板またはよろい板に、係止具を用いて新たな多孔板を固定することにより行うため、防音壁の洗浄や再塗装、あるいは防音壁表面の多孔板の交換を行うのに比べて、工事が非常に容易であり、これにより、きわめて迅速に工事作業を行うことができるため、短期間でリフレッシュ作業を完了することが可能であり、また、廃棄物がでないため、経済的である。
【０００６】
しかも、既設の防音壁表面の多孔板の孔や、よろい板の傾斜板部を用いて新多孔板を取付ける上記工法は、予め新多孔板の取付のための加工を既設の多孔板等に施す必要がなく、そのため、高速道路での作業を新多孔板の固定のみの最小にすることができる。さらに、上記防音壁のリフレッシュ方法においては、係止具に対する新多孔板の固定は離脱可能とすることにより、新多孔板の再度の交換を容易にすることができる。
【０００７】
これら防音壁のリフレッシュ方法においては、係止具に対する新多孔板の固定は離脱可能とすることができ、また、既設の防音壁と対向する面側に板面の平面度を維持するための補強材を備えることにより薄板化できるようにした新多孔板を用いることができる。
また、本発明のリフレッシュ方法においては、少なくとも幅方向の両端縁を屈曲させて屈曲部を形成した新多孔板を用いることができ、この場合、既設の防音壁の両端を保持し、且つ隣接する防音壁の相互連結に供する柱部材間に、隣接する新多孔板の屈曲部を嵌め合わせることにより、該柱部材間に新多孔板を装着するか、あるいは、柱部材上において、隣接する防音壁の各多孔板にそれぞれ固定する新多孔板の端部の屈曲部を対向させることにより、該柱部材を隠蔽することことができる。
さらに、本発明のリフレッシュ方法においては、端縁を折り曲げて該端縁に板面と平行な突出部を形成した新多孔板を用いると共に、該突出部により新多孔板の周縁を既設の防音壁に固定することができる。
【０００８】
【発明の実施の形態】
以下、本発明の好ましい実施の形態を図面に基づいて詳細に説明するに、図１乃至図４は本発明に係る防音壁のリフレッシュ方法の第１実施例を示すもので、この第１実施例は、既設の防音壁１の表面の多孔板２における孔３の孔縁４に、係止具１０を係止させ、該係止具１０により既設の多孔板２の表面上に新多孔板５を取付ける場合を示している。
【０００９】
上記防音壁１は、この実施例では、図５及び図６に示すように、多数の孔３を備えた、表面側に位置する多孔板２と、裏面側に位置する外板８との間の隙間に、防音に供するグラスウール等からなる吸音材７を充填したものであり、多孔板２の孔３から入射した騒音が吸音材に吸収されると共に、外板により外部に漏れないように構成されたものである。
なお、上記防音壁１の構造は、上述のものに限らず、多孔板２を備えたものであれば任意のものを用いることができる。
【００１０】
また、この防音壁１は、該防音壁１の幅に対応する間隔で高速道路の道路脇に立設され、防音壁１の両端を保持し、且つ隣接する防音壁１同士の相互連結に供する柱部材９，９の間に設置されている。
上記柱部材９は、通常断面略Ｈ型に形成されたもので、防音壁１の幅方向の端縁を該柱部材９の溝９ａに嵌合させることにより該防音壁の設置を行うことができる。
【００１１】
上記新多孔板５は、防音壁１の多孔板２の表面を覆ってその外観を刷新させるもので、この実施例では、既設のものと同様の外観とするため、上記防音壁１の多孔板２と同形の孔を有するものを用いている。なお、この新多孔板５の孔は、必ずしも既設の多孔板２と同形である必要はなく、既設の多孔板２の孔３とある程度の対応関係があれば、任意の形状のものを用いることができる。
【００１２】
また、図２に示すように、上記新多孔板５における上記既設の防音壁１と対向する面側には、新多孔板５の幅方向または高さ方向に延びる断面略コ字状に形成された補強材１３を複数箇所に取付けることができる。
上記補強材１３は、新多孔板５の板面を撓まないように補強し、その平面度を高く維持することにより該新多孔板５の薄肉化を可能にするためのもので、新多孔板５と連結される連結部１３ａと、該連結部１３ａの幅方向の両端に設けた一対の脚部１３ｂ，１３ｂとで構成されていて、新多孔板５と連結部１３ａとの連結は、新多孔板５側からのねじ止めにより行われているが、それに限るものではない。この場合、新多孔板５の孔６を利用して固定しても良い。
上記一対の脚部１３ｂ，１３ｂは、新多孔板５を防音壁１に固定した際に、その先端部が防音壁１の多孔板２に当接する程度の幅を備えていて、これにより、新多孔板５が風等であおられてもその撓みを一層効果的に抑えることができ、防音壁１への固定をより安定的に行うことが可能である。
【００１３】
なお、図２に示すものにおいては、上記補強材１３を新多孔板５の複数箇所に取付けているが、この補強材１３は、新多孔板５の任意方向に向けて任意箇所に取付けることができ、あるいは全く取付けなくてもよい。
さらに、上記補強板１３は、断面略コ字状のものに限らず、断面略Ｈ型のものやＬ型のもの等の任意の断面形状のものを用いることができ、新多孔板５の複数箇所に取付ける場合には、任意の断面形状のものを混在させてもよい。
また、新多孔板５と連結部１３ａとの連結は、ねじ止めに限らず、新多孔板５側からの鋲の打ち付け、接着による連結等の各種手段により相互に連結することができる。
【００１４】
さらに、上記新多孔板５は、図５または図６に示すように、幅方向の両端縁を屈曲させた屈曲部５ａを備えていて、新多孔板５の曲げ等の外力に対する強度の向上を図ることができる。なお、この屈曲部５ａは、高さ方向の両端縁にも設けることができる。
【００１５】
なお、上記新多孔板５の表面には、二酸化チタン等の各種触媒を塗付してもよく、これにより、活性化した触媒の作用によって空気中の窒素酸化物の除去を図ることができ、また、上記触媒により新多孔板５の表面を親水化して、付着した汚れ等を雨水等によって洗浄可能とすることもできる。
【００１６】
上記係止具１０は、既設の多孔板２と新多孔板５との間に一定の間隔を確保するためのスペーサ部材１１と、新多孔板５の孔６を通して該多孔板５及びスペーサ部材１１を既設の多孔板２に固定する固定部材１２とで構成されている。
【００１７】
上記スペーサ部材１１は、断面略Ｕ字形に形成したスペーサ本体１１ａと、該スペーサ本体１１ａの一端に設けられ、既設の多孔板２の孔３の孔縁４に引っ掛かって該スペーサ部材１１をその孔３の孔縁４に係止させる一対の係止片１１ｂ，１１ｂと、上記固定部材１２の一部を挿通させ、既設の多孔板２の孔３内に至らしめるための挿通孔１１ｃ，１１ｃとを備えたものである。
上記係止片１１ｂ，１１ｂは、それぞれが既設の多孔板２における隣接する孔３，３に係止し、上記挿通孔１１ｃ，１１ｃが、既設の多孔板２の他の孔３上に位置するように構成されている。
【００１８】
また、上記固定部材１２は、新多孔板５の表面と既設の多孔板２の裏側とに係止して、これら新多孔板５と多孔板２とをスペーサ部材１１を介在させた状態で連結するものである。
この実施例の固定部材１２は、該固定部材１２の先端の雄ねじを切った可動部１２ｂを、新多孔板５の孔６及びスペーサ部材１１の挿通孔１１ｃ，１１ｃ、並びに既設の多孔板２の孔３に挿通させた状態でネジ１２ａを締め付けることにより、可動部１２ｂがネジ頭方向に移動して複数の係止部片１２ｃが起立し、その径が拡大する構造となっていて、この起立した係止部片１２ｃとネジ頭側のワッシャ部材１２ｄとで新多孔板５、スペーサ部材１１、多孔板２を挟んで相互に固定することができるようになっている。
【００１９】
なお、上記固定部材１２は、上述のものに限らず、各種板材への外側からの固定に適した、一般に「あと施工アンカー」と呼ばれる市販のものを用いることができる。例えば、図４の（Ａ）に示すように、ばね１１２ｄにより連結した係止部片１１２ｃを鎖線で示すように挿入方向に倒した状態で多孔板２の孔３に挿入し、ネジ１１２ａを係止部片１１２ｃに締め込むことにより係止部片１１２ｃを起立状態（実線位置）に保持するする構造の固定部材１１２や、（Ｂ）に示すように、ネジ２１２ａを螺挿していくと、それに押圧されて倒れていた一対の係止部片が２１２ｃ，２１２ｃが両側に開く構造の固定部材２１２等、適当な構造のものを用いることができる。
また、上記固定部材１２，１１２，２１２は、係止部片１２ｃ，１１２ｃ，２１２ｃを起倒可能な構成とすることが望ましく、これにより、係止具１０に対する新多孔板５の固定は離脱可能となるため、汚れた新多孔板５を交換が可能となり、防音壁１の再度のリフレッシュ工事を容易に行うことができるという利点がある。
【００２０】
上記構成を有する防音壁のリフレッシュ方法においては、まず、既設の防音壁１における多孔板２の複数の孔３の孔縁４に、それぞれスペーサ部材１１を順次係止させ、その後、新多孔板５をスペーサ部材１１に当接した上で、固定部材１２等を、対応するそれぞれの新多孔板５の孔６から、スペーサ部材１１の挿通孔１１ｃ，１１ｃ、既設の多孔板２の孔３に挿通させ、ネジ１２ａを順次締め付けて係止部片１２ｃ，１２ｃを起立させることにより、新多孔板５を多孔板２に固定する。なお、この場合、上記スペーサ部材１１は、新多孔板５を多孔板２に固定した際に、新多孔板５の補強材１３と干渉しないように位置させる。
【００２１】
上記新多孔板５の設置に際しては、図５に示すように、既設の防音壁１における柱部材９，９の間に新多孔板５の屈曲部５ａを嵌め合わせることにより、これらの柱部材９，９の間に新多孔板５をほとんど突出しない状態に装着し、あるいは、図６に示すように、既設の防音壁１における柱部材９を、隣接する防音壁１，１の各多孔板２，２に固定するそれぞれの新多孔板５，５の屈曲部５ａ，５ａを相互に対向、当接させて隠蔽するように固定することもできる。
【００２２】
かくして、既設の防音壁１の表面は新多孔板５により覆われ、防音壁１の表面の外観は刷新されることとなるが、この場合、新多孔板５の既設の防音壁への固定を、既設の防音壁１の表面の多孔板２の孔３を利用する係止具１０を用いて行うため、防音壁の洗浄や再塗装、あるいは防音壁表面の多孔板の交換を行うのに比べて、工事が非常に容易であり、これにより、きわめて迅速に工事作業を行うことができるため、短期間でリフレッシュ作業を完了することが可能であり、しかも、廃棄物がでないため、経済的である。
【００２３】
また、既設の防音壁１の柱部材９を新多孔板５によって隠蔽することにより、防音壁全体の外観が一層向上するだけでなく、高速道路を走行中のドライバー等の視界に柱部材が入らなくなるため、運転中に柱部材９がちらちらして目の疲労が運転の妨げになるような事態を回避することができる。
【００２４】
上記第１実施例においては、係止具１０のスペーサ部材１１を、一対の係止片１１ｂ，１１ｂを既存の多孔板２の孔３の孔縁４に引っ掛けることにより係止させているが、該スペーサ部材１１を孔縁に保持することができるものであれば、接着等の任意の手段を用いることができる。さらに、スペーサ部材１１を多孔板２に適宜手段による係止あるいは接着等により固定した場合に、スペーサ部材１１の挿通孔１１ｃ，１１ｃのそれぞれにネジ山を設けて、上述のような固定部材１２に代えて、単なるネジやボルトを用いても良い。
なお、上記スペーサ部材１１は、既設の多孔板２と新多孔板５との間に隙間を設ける必要がない場合には省略することができる。
【００２５】
また、上記第１実施例においては、新多孔板５の補強材１３を、該新多孔板５とのみ連結しているが、図７に示すように、新多孔板５と連結される第１連結部１４ａと、その一端に設けられた脚部１４ｂと、該脚部１４ｂの先端側に設けられた、既設の防音壁１の多孔板２に当接する第２連結部１４ｃとで構成される補強板１４を用い、第２連結部１４ｃと多孔板２とをさらに連結するようにしてもよい。この場合、補強板１４の第２連結部と多孔板２との連結は、既設の防音壁１に孔を開けたり、何らかの加工を加える必要をなくするため、上記係止具１０の固定部材１１と同型のあと施工アンカー用いて、固定部材１１の場合と同様の要領で行うことが望ましい。
【００２６】
さらに、上記第１実施例では、少なくとも横方向各端縁に、図２及び図５、図６に示すような、各端縁の先端が新多孔板５の内側に向かうように屈曲された形状の屈曲部５ａを設けた新多孔板５を用い、既設の防音壁１に対して図５及び図６に示すような態様で固定しているが、このような形状の屈曲部５ａを備えた新多孔板５に代えて、図８の（Ａ）または（Ｂ）に示すような、端縁を折り曲げて板面と平行な突出部１５ａ，１６ａを形成した新多孔板１５，１６を用い、この突出部１５ａ，１６ａにより新多孔板１５，１６の周縁を既設の防音壁に固定するようにしてもよい。
【００２７】
即ち、図８の（Ａ）に示す新多孔板１５は、その横方向の両端縁側を、既設の防音壁と対向する側に板面に対して直角に屈曲すると共に、その先端側を、新多孔板１５の板面と平行且つ、外方に向くようにさらに折り曲げて突出部１５ａを形成したものである。一方、図８の（Ｂ）に示す新多孔板１６は、その軸方向の一端縁側に上記第１実施例と同様の屈曲部１６ｂを形成し、他端縁側に、既設の防音壁と対向する側に板面に対して直角に屈曲すると共に、その先端側を、新多孔板１６の板面と平行且つ、外方に向くようにさらに折り曲げて突出部１６ａを形成したものである。なお、上記突出部１５ａ，１６ａは、新多孔板１５，１６の高さ方向及び横方向のいずれの端縁に設けても良い。
これら新多孔板１５，１６における突出部１５ａ，１６ａの、既設の防音壁への固定は、既設の防音壁の柱部材や枠材等に、突出部１５ａ，１６ａ側から鋲を打ち付けて該柱部材に固定したり、あるいは、既設の防音壁の多孔板の孔を利用して、上述の固定部材１１やあと施工アンカーを用いて多孔板に固定したり、任意の手段で固定することができる。
このような新多孔板１５，１６を用いることにより、新多孔板の端縁が何らかの原因でめくれるのを防止することができ、既設の防音壁へのより安定的且つ強固な固定を図ることができる。
【００２８】
上述の上記第１実施例では、係止具１０をスペーサ部材１１と固定部材１２により構成したものとしているが、図９及び図１０に示す第２実施例においては、係止具２０を、細板状の基板部２１ａに、既設の防音壁１における多孔板２の孔３の孔縁４に引っ掛けるための多数の係止突起２１ｂを設けた係止板２１と、先端が既設の多孔板２に衝当して該係止板２１に新多孔板５を固定するためのネジ２２とにより構成している。
【００２９】
上記係止板２１は、図１０に示すように、適当な長さの細板状の基板部２１ａに、断面略Ｌ字状の係止突起２１ｂを複数且つ先端が同方向に向くように突設したもので、基板部２１ａにおける各係止突片２１ｂの間には、上記ネジを螺挿するためのネジ孔２１ｃが数カ所設けられている。
上記係止突起２１ｂは、既設の多孔板２の孔３の設置間隔に適応する間隔に形成したもので、基板部２１ａを打ち抜いて形成したものとすることができる。
【００３０】
上記構成を有する防音壁のリフレッシュ方法においては、まず、既設の防音壁１における多孔板２の複数の孔３の孔縁４に、係止板２１の各係止突起２１ｂを引っ掛け、そして、新多孔板５を、該新多孔板５の孔６からネジ２２のネジ杆２２ａを挿入すると共に、該ネジ杆２２ａを係止板２１のネジ孔２１ｃに螺挿するすることによって固定する。
この場合、図９に示すように、ネジ２２を締め付けることにより、該ネジ２２のネジ杆２２ａの先端が既設の多孔板２を押し付けると共に、係止板２１の基板部２１ａがネジ孔２１ｃによりネジ２２のネジ頭の方向に引き寄せられ、これにより、多孔板２と新多孔板５との間に適度なスペースが形成されながら、係止突片２１ｂが多孔板２の孔縁４に圧着することになるため、新多孔板５の設置は強固なものとなる。
また、上記係止板２１を、１枚の新多孔板５の固定に際して複数枚使用して、各係止板の２１の係止突起２１ｂの先端方向を、他の係止板２１の係止突起２１ｂと異なる方向に向けて既設の多孔板２に係止することにより、より強固且つ確実な固定を図ることができる。
【００３１】
上記第２実施例においては、係止具２０を構成する係止板２１は、係止突起２１ｂを複数備えたものとしているが、図１１に示すように、係止突起２１ｂを１つだけ設けたものとしてもよく、この場合であっても、上記第２実施例の係止板２１と同様の使用方法で用いることにより、同等の効果を得ることができる。
なお、図９及び図１０におけるその他の構成は、上記第１実施例と変わるところがないので、同一の符号を付してそれらの説明を省略する。
【００３２】
図１２乃至図１４は、本発明の第３実施例を示すもので、この実施例の防音壁のリフレッシュ方法は、既設の防音壁３１表面のよろい板３２における傾斜板部３２ａに係止具３５を係止させ、該係止具３５により既設のよろい板３２の表面との間に微小間隔を置いて同様なよろい板からなる新多孔板３３を固定する場合を示している。
【００３３】
上記既設の防音壁３１は、基本的には上記第１実施例のものと同じであるが、表面の多孔板２に代えてよろい板３２を用いたものである。
上記よろい板３２は、前方に突出し、同一方向に傾斜させた複数の傾斜板部３２ａが一体成形されたもので、これらの各傾斜板部３２ａによりそれぞれ長孔３２ｂが形成された態様のものである。
【００３４】
上記新多孔板３３は、この実施例では、既設のよろい板３２と同形のものを用いているが、この新多孔板３３は、必ずしも既設のよろい板３２と同形である必要はなく、任意の形状のものを用いることができること、及び新多孔板３３の幅方向や高さ方向の両端縁を屈曲させて屈曲部を形成してもよいことは、上記第１実施例と同様である。
【００３５】
上記係止具３５は、既設のよろい板３２の傾斜板部３２ａを利用して取付けるもので、傾斜板部３２ａの表面側からあてがう第１係止片３７と、裏面側からあてがう第２係止片３８と、これら第１及び第２係止片３７，３８を相互に連結する連結用ネジ３９とで構成される係止部材３６と、新多孔板３３を係止部材３６に固定する固定用ネジ４０とによって構成される。
【００３６】
上記第２係止片３８は、既設のよろい板３２の傾斜板部３２ａの長孔３２ｂから傾斜板部３２ａの裏面側、隣接する傾斜板部３２ａの長孔３２ｂに延びて、該隣接する傾斜板部３２ａの長孔３２ｂの孔縁に係止する、全体として鈎状に形成された係止部３８ａと、上記第１係止片３７との連結に供する、連結用ネジ３９が螺挿されるネジ孔３８ｃを備えた連結部３８ｂとを一体に備えたものである。
一方、上記第１係止片３７は、既設のよろい板３２の傾斜板部３２ａの表面側に当接して上記第２係止片３８の係止部３８ａ方向に圧着する圧着部３７ａと、連結用ネジ３９が挿通される挿通孔３７ｃが穿設された、新多孔板３３が固定される基板部３７ｂと、該基板部３７ｂの一端に突設された、既設のよろい板３２の表面と新多孔板３３との間に微小間隔を形成するためのスペーサ部３７ｄと、上記基板部ｂに設けた、新多孔板３３の固定の際に上記固定用ネジ４０が螺挿されるネジ穴３７ｅを一体に備えたものである。
【００３７】
上記構成を有する防音壁のリフレッシュ方法においては、まず、第２係止片３８の係止部３８ａを、既設のよろい板３２の傾斜板部３２ａに係止させると共に、第１係止片３７の圧着部３７ａで傾斜板部３２ａを押圧した状態で第２係止片３８の連結部３８ｂと第１係止片３７の基板部３７ｂとをネジ孔３８ｃ及び挿通孔３７ｃを利用して連結用ネジ３９で相互連結する。
このとき、第１係止片３７と第２係止片３８とで上記傾斜板部３２ａを挟持した状態で、第１係止片３７のスペーサ部３７ｄの先端が既設のよろい板３２の表面に当接することとなり、これより、係止部材３６のよろい板３２への係止、固定は完了する。なお、この作業は、１つの既設のよろい板３２に対して数カ所で行う。
そして、各箇所の係止部材３５におけるそれぞれの第１係止片３７の基板部３７ｂに対して、新多孔板３３に穿設した挿通孔３３ａを通して、該基板部３７ｂに設けたネジ穴３７ｅに固定用ネジ４０を順次螺挿することにより、新多孔板３３は係止部材３６に固定されることとなる。
【００３８】
かくして、既設の防音壁３１の表面のよろい板は新多孔板３３により覆われ、防音壁１の表面の外観は刷新されることとなり、上記第１実施例と同等の効果を得ることができる。
また、この第３実施例の防音壁のリフレッシュ方法は、係止部材３５を１度既設のよろい板３２に係止、固定してしまえば、固定用ネジ４０の着脱作業のみで新多孔板３３の交換が可能であるため、再度のリフレッシュ工事が非常に容易である。
【００３９】
なお、この第３実施例において、新多孔板３３の端縁に突出部を設けても良い点、及び新多孔板３３によって既設の防音壁３１の柱部材を隠蔽するようにしてもよい点、新多孔板３３を柱部材間に位置させるようにしてもよい点、新多孔板３３に各種断面形状の補強材を取付ける点等は基本的に上記第１実施例と同様である。
【００４０】
【発明の効果】
以上に詳述したように、本発明の防音壁のリフレッシュ方法によれば、既設の防音壁の表面の多孔板またはよろい板に、それらの孔や傾斜板部を利用する係止具を用いて新たな多孔板を固定することにより行うため、防音壁の洗浄や再塗装、あるいは防音壁表面の多孔板の交換を行うのに比べて、工事が非常に容易であり、これにより、きわめて迅速に工事作業を行うことができるため、短期間でリフレッシュ作業を完了することが可能であり、しかも、廃棄物がでないため、経済的である。
【図面の簡単な説明】
【図１】本発明の第１実施例を示す一部破断分解斜視図である。
【図２】本発明の第１実施例に係る新多孔板の平断面図である。ただし、孔は省略している。
【図３】本発明の第１実施例を示す要部拡大断面図である。
【図４】（Ａ）及び（Ｂ）は、それぞれ本発明の第１実施例で使用する固定部材の構造例を示す正面図である。
【図５】上記第１実施例による施工態様の一例を示す平断面図である。
【図６】上記第１実施例による施工の他の態様を示す平断面図である。
【図７】本発明の第１実施例における補強材の異なる態様を示す要部平断面図である。
【図８】（Ａ）及び（Ｂ）は、それぞれ本発明の第１実施例に係る新多孔板の、図２とことなる態様のものを示す平断面図である。ただし、孔は省略している。
【図９】本発明の第２実施例を示す要部断面図である。。
【図１０】本発明の第２実施例に係る係止板を示す斜視図である。
【図１１】図６と異なる態様の係止板を示す斜視図である。
【図１２】本発明の第３実施例を示す断面図である
【図１３】同一部破断分解斜視図である。
【図１４】同要部拡大断面図である。
【符号の説明】
１，３１既設の防音壁
２既設の多孔板
３多孔板の孔
４孔縁
５，１５，１６，３３新多孔板
５ａ，１６ｂ屈曲部
９柱部材
１０，２０，３５係止具
１３補強材
１５ａ，１６ａ突出部
３２よろい板[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for refreshing a soundproof wall installed along a highway or the like, and more specifically, a simple method using a hole in a perforated plate or a slanted plate portion of a rough plate constituting the soundproof wall. A refresh method.
[0002]
[Prior art]
The sound barriers installed along highways and the like are exposed to the exhaust gas of the car and the direct sunlight etc. due to long-term use, and the white ones become extremely dirty and darkened. Therefore, it is desirable to refresh those that are very dirty, but it is practically difficult to clean and repaint the soundproof wall surface for a long time while the car is traveling at high speed on the road. Dismantling and re-installing the sound barrier itself not only generates a large amount of waste, but is also uneconomical.
In addition, since the porous plate on the surface of the soundproof wall is a holding member for the sound absorbing material filled in the soundproof wall, it is very complicated to replace only the porous plate on the surface, and the construction period is long. There is a possibility of becoming.
On the other hand, both ends of existing sound barriers are held by pillar members, but it has been pointed out that this row of pillar members may adversely affect the driver's high-speed operation. It is desirable to solve this problem.
[0003]
[Problems to be solved by the invention]
The present invention is intended to provide a method for refreshing a soundproof wall that solves such a problem. Therefore, the technical problem to be solved by the present invention is simple and inexpensive due to short-term construction. It is an object of the present invention to provide a method for refreshing a soundproof wall without generating waste.
Another technical problem of the present invention is to provide a method for refreshing a soundproof wall that can be easily and quickly constructed using holes in a perforated plate of an existing soundproof wall or an inclined plate portion of a slab. is there.
Another technical problem of the present invention is that, at the same time as the refreshing of the soundproof wall, the column of soundproof column members that may adversely affect high-speed driving due to fatigue of the eyes of the driver enters the driver's field of view. The object is to propose a method for refreshing the soundproof wall.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the sound barrier refreshing method of the present invention is applied to the hole edge of the porous plate on the surface of the existing sound barrier. And a spacer portion for ensuring a space between the surface of the perforated plate and the new perforated plate provided to cover the surface of the soundproof wall. The locking tool is locked, and on the surface of the existing porous plate by the locking tool Above the above interval A new perforated plate is fixed, or on the inclined plate portion of the existing soundproof wall surface And a spacer portion for ensuring a space between the surface of the board and the new porous plate provided to cover the surface of the soundproof wall. A locking tool is locked, and between the surface of the existing armor plate by the locking tool. Above interval Put the above A new porous plate is fixed.
[0005]
The sound barrier refreshing method having the above-described configuration is performed by fixing a new porous plate to the porous plate or the slab plate on the surface of the existing sound barrier using a locking tool. Or, compared to replacing the perforated plate on the surface of the soundproof wall, the work is much easier, and the work can be done very quickly, so the refresh work can be completed in a short period of time. It is possible and economical because there is no waste.
[0006]
Moreover, the above-described method of attaching the new porous plate using the holes of the porous plate on the surface of the existing soundproof wall or the inclined plate portion of the baffle plate pre-processes the existing porous plate or the like for mounting the new porous plate. There is no need, so the work on the highway can be minimized only by fixing the new perforated plate. Furthermore, in the above-described method for refreshing the soundproof wall, the new porous plate can be easily replaced again by making it possible to remove the fixing of the new porous plate from the locking tool.
[0007]
In these sound insulation wall refreshing methods, the fixing of the new perforated plate to the locking device can be made detachable, and the reinforcement for maintaining the flatness of the plate surface on the side facing the existing sound insulation wall is possible. It is possible to use a new perforated plate that can be thinned by providing a material.
Further, in the refreshing method of the present invention, it is possible to use a new perforated plate in which bent portions are formed by bending at least both edges in the width direction. In this case, both ends of the existing soundproof wall are held and adjacent to each other. By fitting the bent portion of the adjacent new porous plate between the column members used for the interconnection of the soundproof walls, the new porous plate is mounted between the column members, or the adjacent soundproof wall on the column member The column member can be concealed by making the bent portions of the ends of the new porous plate fixed to the respective porous plates face each other.
Furthermore, in the refreshing method of the present invention, a new perforated plate in which an edge is bent and a protruding portion parallel to the plate surface is formed on the edge is used, and the peripheral edge of the new porous plate is provided by the protruding portion on the existing soundproof wall. Can be fixed to.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 to 4 show a first embodiment of a sound barrier refreshing method according to the present invention. The locking member 10 is locked to the hole edge 4 of the hole 3 in the porous plate 2 on the surface of the existing soundproof wall 1, and the new porous plate 5 is placed on the surface of the existing porous plate 2 by the locking tool 10. Shows the case of mounting.
[0009]
In this embodiment, as shown in FIGS. 5 and 6, the sound barrier 1 is provided between a porous plate 2 having a large number of holes 3 located on the front surface side and an outer plate 8 located on the back surface side. The sound-absorbing material 7 made of glass wool or the like for soundproofing is filled in the gap, and the noise incident from the hole 3 of the perforated plate 2 is absorbed by the sound-absorbing material and is not leaked to the outside by the outer plate. It has been done.
The structure of the soundproof wall 1 is not limited to that described above, and any structure having the perforated plate 2 can be used.
[0010]
The soundproof wall 1 is erected on the side of the highway at intervals corresponding to the width of the soundproof wall 1, holds both ends of the soundproof wall 1, and serves to interconnect adjacent soundproof walls 1. It is installed between the column members 9 and 9.
The column member 9 is generally formed in a substantially H-shaped cross section, and the soundproof wall can be installed by fitting the edge in the width direction of the soundproof wall 1 into the groove 9a of the column member 9. it can.
[0011]
The new porous plate 5 covers the surface of the porous plate 2 of the soundproof wall 1 and renews its appearance. In this embodiment, the porous plate of the soundproof wall 1 has the same appearance as the existing one. 2 having the same shape as hole 2 is used. Note that the holes of the new porous plate 5 do not necessarily have the same shape as the existing porous plate 2, and any shape having a certain degree of correspondence with the holes 3 of the existing porous plate 2 should be used. Can do.
[0012]
In addition, as shown in FIG. 2, the surface of the new porous plate 5 facing the existing soundproof wall 1 is formed in a substantially U-shaped cross section extending in the width direction or height direction of the new porous plate 5. The reinforcing material 13 can be attached to a plurality of locations.
The reinforcing member 13 reinforces the plate surface of the new porous plate 5 so as not to bend and maintains the flatness of the new porous plate 5 to be thin. It is composed of a connecting portion 13a connected to the plate 5 and a pair of legs 13b, 13b provided at both ends in the width direction of the connecting portion 13a. The connection between the new porous plate 5 and the connecting portion 13a is as follows: Although it is performed by screwing from the new porous plate 5 side, it is not limited thereto. In this case, the holes may be fixed using the holes 6 of the new porous plate 5.
The pair of leg portions 13b, 13b has a width that allows the front end portion of the pair of leg portions 13b and 13b to contact the porous plate 2 of the soundproof wall 1 when the new porous plate 5 is fixed to the soundproof wall 1. Even if the perforated plate 5 is blown with wind or the like, the bending can be more effectively suppressed, and the soundproof wall 1 can be more stably fixed.
[0013]
2, the reinforcing material 13 is attached to a plurality of locations of the new porous plate 5. However, the reinforcing material 13 may be attached to any location of the new porous plate 5 in an arbitrary direction. Yes, or not at all.
Further, the reinforcing plate 13 is not limited to a substantially U-shaped cross section, and may have any cross-sectional shape such as a substantially H-shaped or L-shaped cross section. When attaching to a location, you may mix things of arbitrary cross-sectional shapes.
In addition, the connection between the new porous plate 5 and the connecting portion 13a is not limited to screwing, but can be connected to each other by various means such as hammering from the new porous plate 5 side or connection by adhesion.
[0014]
Further, as shown in FIG. 5 or FIG. 6, the new porous plate 5 is provided with a bent portion 5a in which both edges in the width direction are bent, and the strength of the new porous plate 5 against an external force such as bending is improved. Can be planned. In addition, this bending part 5a can be provided also in the both-ends edge of a height direction.
[0015]
The surface of the new porous plate 5 may be coated with various types of catalysts such as titanium dioxide, thereby removing nitrogen oxides in the air by the action of the activated catalyst. Further, the surface of the new porous plate 5 can be made hydrophilic by the above catalyst, and the attached dirt can be washed with rain water or the like.
[0016]
The locking tool 10 includes a spacer member 11 for securing a certain distance between the existing porous plate 2 and the new porous plate 5, and the porous plate 5 and the spacer member 11 through the holes 6 of the new porous plate 5. And a fixing member 12 for fixing the plate to the existing perforated plate 2.
[0017]
The spacer member 11 is provided at one end of the spacer main body 11a having a substantially U-shaped cross section and at one end of the spacer main body 11a. The spacer member 11 is hooked on the hole edge 4 of the hole 3 of the existing perforated plate 2 and the spacer member 11 is inserted into the hole. A pair of locking pieces 11b, 11b to be locked to the hole edge 4 of 3 and insertion holes 11c, 11c for allowing a part of the fixing member 12 to be inserted and reaching the hole 3 of the existing porous plate 2; It is equipped with.
The locking pieces 11b and 11b are respectively locked in the adjacent holes 3 and 3 in the existing porous plate 2, and the insertion holes 11c and 11c are located on the other holes 3 of the existing porous plate 2. It is configured as follows.
[0018]
The fixing member 12 is engaged with the surface of the new porous plate 5 and the back side of the existing porous plate 2, and the new porous plate 5 and the porous plate 2 are connected with the spacer member 11 interposed therebetween. To do.
The fixing member 12 of this embodiment includes a movable portion 12b having a male screw cut at the tip of the fixing member 12, a hole 6 of the new porous plate 5, the insertion holes 11c and 11c of the spacer member 11, and the existing porous plate 2. By tightening the screw 12a in a state of being inserted into the hole 3, the movable portion 12b moves in the screw head direction, and the plurality of locking portion pieces 12c are erected, and the diameter is increased. The new perforated plate 5, the spacer member 11, and the perforated plate 2 can be fixed to each other by the engaging piece 12 c and the washer member 12 d on the screw head side.
[0019]
The fixing member 12 is not limited to the above-described member, and a commercially available member generally referred to as “post-installed anchor” suitable for fixing to various plate materials from the outside can be used. For example, as shown in FIG. 4A, the locking piece 112c connected by the spring 112d is inserted into the hole 3 of the perforated plate 2 in the state of being tilted in the insertion direction as shown by the chain line, and the screw 112a is engaged. When the screw 212a is screwed into the fixing member 112 having a structure for holding the locking piece 112c in an upright state (solid line position) by tightening to the stop piece 112c, as shown in FIG. A pair of locking parts that have been pressed and fallen can be used, such as a fixing member 212 having a structure in which 212c and 212c open on both sides.
The fixing members 12, 112, and 212 are preferably configured so that the locking pieces 12c, 112c, and 212c can be raised and lowered, whereby the fixing of the new porous plate 5 to the locking tool 10 can be released. Therefore, the dirty new perforated plate 5 can be replaced, and there is an advantage that the renewal work of the soundproof wall 1 can be easily performed.
[0020]
In the method of refreshing the soundproof wall having the above-described configuration, first, the spacer member 11 is sequentially engaged with the hole edges 4 of the plurality of holes 3 of the perforated plate 2 in the existing soundproof wall 1, and then the new perforated plate 5. , The fixing member 12 and the like are inserted from the corresponding holes 6 of the new porous plate 5 into the insertion holes 11c and 11c of the spacer member 11 and the holes 3 of the existing porous plate 2, respectively. The new perforated plate 5 is fixed to the perforated plate 2 by tightening the screws 12a in sequence to erect the locking portion pieces 12c and 12c. In this case, the spacer member 11 is positioned so as not to interfere with the reinforcing material 13 of the new porous plate 5 when the new porous plate 5 is fixed to the porous plate 2.
[0021]
When the new porous plate 5 is installed, as shown in FIG. 5, these column members 9 are fitted by fitting the bent portions 5 a of the new porous plate 5 between the column members 9 and 9 in the existing soundproof wall 1. , 9 so that the new porous plate 5 hardly protrudes, or as shown in FIG. 6, the column member 9 in the existing soundproof wall 1 is attached to each porous plate 2 of the adjacent soundproof walls 1, 1. , 2 can be fixed so as to conceal the bent portions 5a, 5a of the respective new porous plates 5, 5 facing each other and abutting each other.
[0022]
Thus, the surface of the existing soundproof wall 1 is covered with the new porous plate 5, and the appearance of the surface of the soundproof wall 1 is renewed. In this case, the new porous plate 5 is fixed to the existing soundproof wall. Since it is performed using the locking tool 10 that utilizes the holes 3 of the porous plate 2 on the surface of the existing soundproof wall 1, the soundproof wall is cleaned or repainted or the porous plate on the surface of the soundproof wall is replaced. The construction work is very easy, so that the construction work can be carried out very quickly, so that the refreshing work can be completed in a short period of time, and it is economical because there is no waste. is there.
[0023]
Further, by concealing the pillar member 9 of the existing soundproof wall 1 by the new perforated plate 5, not only the appearance of the entire soundproof wall is further improved, but also the pillar member enters the field of view of a driver traveling on the highway. Therefore, it is possible to avoid a situation in which the column member 9 flickers during driving and eye fatigue interferes with driving.
[0024]
In the first embodiment, the spacer member 11 of the locking tool 10 is locked by hooking the pair of locking pieces 11b, 11b to the hole edge 4 of the hole 3 of the existing porous plate 2, Any means such as adhesion can be used as long as the spacer member 11 can be held at the hole edge. Further, when the spacer member 11 is fixed to the perforated plate 2 by appropriate means such as locking or bonding, a screw thread is provided in each of the insertion holes 11c, 11c of the spacer member 11, and the fixing member 12 as described above is provided. Instead, a simple screw or bolt may be used.
The spacer member 11 can be omitted when it is not necessary to provide a gap between the existing porous plate 2 and the new porous plate 5.
[0025]
Moreover, in the said 1st Example, although the reinforcement material 13 of the new porous board 5 is connected only with this new porous board 5, as shown in FIG. The connecting portion 14a includes a leg portion 14b provided at one end of the connecting portion 14a, and a second connecting portion 14c provided on the distal end side of the leg portion 14b and abutting against the porous plate 2 of the existing soundproof wall 1. You may make it connect the 2nd connection part 14c and the perforated panel 2 further using the reinforcement board 14. FIG. In this case, the connection between the second connecting portion of the reinforcing plate 14 and the perforated plate 2 eliminates the need to make a hole in the existing soundproof wall 1 or add some processing, so that the fixing member 11 of the locking tool 10 is not necessary. It is desirable to carry out in the same manner as in the case of the fixing member 11 by using a post-construction anchor of the same type as the above.
[0026]
Further, in the first embodiment, at least at each edge in the lateral direction, as shown in FIGS. 2, 5, and 6, a shape bent so that the tip of each edge is directed to the inside of the new porous plate 5. The new perforated plate 5 provided with the bent portion 5a is fixed to the existing soundproof wall 1 in a manner as shown in FIGS. 5 and 6, and the bent portion 5a having such a shape is provided. Instead of the new porous plate 5, as shown in FIG. 8 (A) or (B), using the new porous plate 15, 16 in which the edge is bent to form protrusions 15a, 16a parallel to the plate surface, You may make it fix the periphery of the new perforated plates 15 and 16 to the existing soundproof wall by these protrusion parts 15a and 16a.
[0027]
That is, the new perforated plate 15 shown in FIG. 8 (A) is bent at both ends in the lateral direction at right angles to the plate surface on the side facing the existing soundproof wall, and at the tip side of the new perforated plate 15. The protruding portion 15a is formed by further bending so as to be parallel to the plate surface of the porous plate 15 and facing outward. On the other hand, the new perforated plate 16 shown in FIG. 8B is formed with a bent portion 16b similar to that of the first embodiment on one end edge side in the axial direction and opposed to the existing soundproof wall on the other end edge side. The protrusion 16a is formed by bending the tip side of the plate to the side at a right angle and further bending the tip side so as to be parallel to the plate surface of the new porous plate 16 and facing outward. In addition, you may provide the said protrusion parts 15a and 16a in any edge of the height direction of a new porous board 15 and 16, and a horizontal direction.
The protrusions 15a and 16a in the new porous plates 15 and 16 are fixed to the existing soundproof wall by striking the pillars or frame members of the existing soundproof wall from the protrusions 15a and 16a side with the flanges. It can be fixed to a member, or can be fixed to the perforated plate using the above-described fixing member 11 or a post-construction anchor using the holes of the perforated plate of the existing soundproof wall, or can be fixed by any means. .
By using such new perforated plates 15 and 16, it is possible to prevent the edges of the new perforated plate from being turned up for some reason, and to achieve more stable and strong fixing to the existing soundproof wall. it can.
[0028]
In the first embodiment described above, the locking tool 10 is composed of the spacer member 11 and the fixing member 12. However, in the second embodiment shown in FIGS. The plate-like substrate portion 21a is provided with a locking plate 21 provided with a large number of locking projections 21b for hooking on the hole edges 4 of the holes 3 of the porous plate 2 in the existing soundproof wall 1, and the porous plate 2 having the existing tip. And a screw 22 for fixing the new porous plate 5 to the locking plate 21.
[0029]
As shown in FIG. 10, the locking plate 21 projects a plurality of locking projections 21b having a substantially L-shaped cross section on a thin plate-like substrate portion 21a having an appropriate length so that the tips are directed in the same direction. The screw holes 21c for screwing the screws are provided between the locking protrusions 21b of the board portion 21a.
The locking protrusions 21b are formed at intervals suitable for the interval between the holes 3 of the existing porous plate 2, and can be formed by punching the substrate portion 21a.
[0030]
In the method of refreshing the soundproof wall having the above-described configuration, first, the respective locking projections 21b of the locking plate 21 are hooked on the hole edges 4 of the plurality of holes 3 of the perforated plate 2 in the existing soundproofing wall 1, and the new The porous plate 5 is fixed by inserting the screw rod 22a of the screw 22 from the hole 6 of the new porous plate 5 and screwing the screw rod 22a into the screw hole 21c of the locking plate 21.
In this case, as shown in FIG. 9, by tightening the screw 22, the tip of the screw rod 22a of the screw 22 presses the existing porous plate 2, and the substrate portion 21a of the locking plate 21 is screwed by the screw hole 21c. 22, the locking protrusion 21 b is pressed against the hole edge 4 of the porous plate 2 while an appropriate space is formed between the porous plate 2 and the new porous plate 5. Therefore, the installation of the new perforated plate 5 becomes strong.
Further, a plurality of the locking plates 21 are used for fixing one new porous plate 5, and the leading end direction of the locking projection 21 b of each locking plate is set to the locking direction of the other locking plate 21. By locking to the existing perforated plate 2 in a direction different from the protrusion 21b, it is possible to achieve a stronger and more reliable fixing.
[0031]
In the second embodiment, the locking plate 21 constituting the locking tool 20 is provided with a plurality of locking protrusions 21b. However, as shown in FIG. 11, only one locking protrusion 21b is provided. Even in this case, the same effect can be obtained by using the same usage method as the locking plate 21 of the second embodiment.
In addition, since the other structure in FIG.9 and FIG.10 has no place different from the said 1st Example, it attaches | subjects the same code | symbol and abbreviate | omits those description.
[0032]
FIGS. 12 to 14 show a third embodiment of the present invention. The sound barrier refreshing method of this embodiment is based on the inclined plate portion 32a of the rough plate 32 on the surface of the existing sound barrier 31 and the locking member 35. FIG. And a new porous plate 33 made of a similar plate is fixed with a small space between the surface of the existing plate 32 and the locking member 35.
[0033]
The existing soundproof wall 31 is basically the same as that of the first embodiment, but uses a plate 32 instead of the porous plate 2 on the surface.
The armor plate 32 is formed by integrally forming a plurality of inclined plate portions 32a protruding forward and inclined in the same direction, and each of the inclined plate portions 32a has a long hole 32b. is there.
[0034]
In this embodiment, the new porous plate 33 has the same shape as the existing armor plate 32. However, the new porous plate 33 is not necessarily provided in the existing porous plate 33. Good board 32 It is not necessary to have the same shape as the above, and that an arbitrary shape can be used, and that the bent portion may be formed by bending both edges in the width direction and the height direction of the new porous plate 33. The same as in the first embodiment.
[0035]
The said locking tool 35 attaches using the inclined board part 32a of the existing board 32, the 1st locking piece 37 applied from the surface side of the inclined board part 32a, and the 2nd locking applied from the back side. A locking member 36 composed of a piece 38 and a connecting screw 39 for connecting the first and second locking pieces 37 and 38 to each other, and a fixing member for fixing the new porous plate 33 to the locking member 36 And a screw 40.
[0036]
The second locking piece 38 extends from the long hole 32b of the inclined plate portion 32a of the existing baffle plate 32 to the back surface side of the inclined plate portion 32a and the long hole 32b of the adjacent inclined plate portion 32a. A connecting screw 39 for screwing the first locking piece 37 to the locking portion 38a formed in a bowl shape as a whole and locked to the hole edge of the long hole 32b of the plate portion 32a is screwed. The connecting portion 38b having the screw hole 38c is integrally provided.
On the other hand, the first locking piece 37 is connected to a crimping portion 37a that abuts on the surface side of the inclined plate portion 32a of the existing armor plate 32 and crimps in the direction of the locking portion 38a of the second locking piece 38. The board part 37b to which the new porous plate 33 is fixed, the insertion hole 37c through which the screw 39 is inserted, and the surface of the existing rough board 32 projecting from one end of the board part 37b A spacer portion 37d for forming a minute gap with the porous plate 33 and a screw hole 37e provided in the substrate portion b, into which the fixing screw 40 is screwed when the new porous plate 33 is fixed, are integrated. It is prepared for.
[0037]
In the sound barrier refreshing method having the above configuration, first, the locking portion 38a of the second locking piece 38 is locked to the inclined plate portion 32a of the existing armor plate 32, and the first locking piece 37 is The connecting portion 38b of the second locking piece 38 and the substrate portion 37b of the first locking piece 37 are connected to each other by using the screw hole 38c and the insertion hole 37c in a state where the inclined plate portion 32a is pressed by the crimping portion 37a. 39 interconnected.
At this time, in a state where the inclined plate portion 32a is sandwiched between the first locking piece 37 and the second locking piece 38, the tip of the spacer portion 37d of the first locking piece 37 is placed on the surface of the existing rough plate 32. As a result, the locking member 36 is locked and fixed to the rough plate 32. This operation is performed at several places on one existing board 32.
Then, through the insertion hole 33a formed in the new porous plate 33, the screw hole 37e provided in the substrate portion 37b is inserted into the substrate portion 37b of the first locking piece 37 in the locking member 35 at each location. The new porous plate 33 is fixed to the locking member 36 by screwing the fixing screws 40 sequentially.
[0038]
Thus, the rough plate on the surface of the existing soundproof wall 31 is covered with the new perforated plate 33, the appearance of the surface of the soundproof wall 1 is renewed, and the same effect as in the first embodiment can be obtained.
Further, according to the third embodiment of the soundproof wall refreshing method, once the locking member 35 is locked and fixed to the existing armor plate 32, the new porous plate 33 can be obtained only by attaching / detaching the fixing screw 40. Therefore, it is very easy to perform refresh work again.
[0039]
In addition, in this 3rd Example, the point which may provide a protrusion part in the edge of the new porous plate 33, and the point which may conceal the pillar member of the existing soundproof wall 31 by the new porous plate 33, The point that the new porous plate 33 may be positioned between the column members, the point that the reinforcing material having various cross-sectional shapes is attached to the new porous plate 33, and the like are basically the same as in the first embodiment.
[0040]
【The invention's effect】
As described in detail above, according to the soundproof wall refreshing method of the present invention, the perforated plate or the slab plate on the surface of the existing soundproof wall is used with a locking tool utilizing those holes or inclined plate portions. Since the work is performed by fixing a new perforated plate, the work is much easier than cleaning and repainting the sound barrier or replacing the perforated plate on the surface of the sound barrier. Since the construction work can be performed, the refresh work can be completed in a short period of time, and it is economical because there is no waste.
[Brief description of the drawings]
FIG. 1 is a partially broken exploded perspective view showing a first embodiment of the present invention.
FIG. 2 is a plan sectional view of a new porous plate according to a first embodiment of the present invention. However, the holes are omitted.
FIG. 3 is an enlarged sectional view of a main part showing a first embodiment of the present invention.
FIGS. 4A and 4B are front views showing structural examples of fixing members used in the first embodiment of the present invention, respectively.
FIG. 5 is a plan sectional view showing an example of a construction mode according to the first embodiment.
FIG. 6 is a plan sectional view showing another embodiment of the construction according to the first embodiment.
FIG. 7 is a plan cross-sectional view of a main part showing different aspects of the reinforcing material in the first embodiment of the present invention.
FIGS. 8A and 8B are plan sectional views showing a new porous plate according to the first embodiment of the present invention, which is different from FIG. However, the holes are omitted.
FIG. 9 is a cross-sectional view of an essential part showing a second embodiment of the present invention. .
FIG. 10 is a perspective view showing a locking plate according to a second embodiment of the present invention.
FIG. 11 is a perspective view showing a locking plate in a mode different from that of FIG.
FIG. 12 is a sectional view showing a third embodiment of the present invention.
FIG. 13 is an exploded perspective view of the same part broken away.
FIG. 14 is an enlarged cross-sectional view of the relevant part.
[Explanation of symbols]
1,31 Existing soundproof wall
2 Existing porous plate
3 Holes in the perforated plate
4 hole edge
5, 15, 16, 33 New perforated plate
5a, 16b Bent part
9 Column members
10, 20, 35 Locking tool
13 Reinforcing material
15a, 16a protrusion
32 Armored board

Claims

A locking tool having a spacer for securing a space between the surface of the porous plate and the new porous plate provided to cover the surface of the soundproof wall is engaged with the hole edge of the porous plate on the surface of the existing soundproof wall. Stop,
Fixing the new porous plate at the interval on the surface of the existing porous plate by the locking tool;
A method of refreshing a sound barrier characterized by the above.

A locking tool having a spacer portion for securing an interval between the surface of the rough plate and the new perforated plate provided to cover the soundproof wall surface on the inclined plate portion of the rough plate of the existing soundproof wall surface. engagement was locked, fixing the new perforated plate at the distance between the surface of the existing armor plate by locking members,
A method of refreshing a sound barrier characterized by the above.

The method for refreshing a soundproof wall according to claim 1 or 2, wherein the fixing of the new perforated plate to the locking tool is detachable.

The refreshing of the soundproof wall according to any one of claims 1 to 3, wherein a new perforated plate having a reinforcing material for maintaining the flatness of the plate surface is used on the surface side facing the existing soundproof wall. Method.

The method for refreshing a soundproof wall according to any one of claims 1 to 4, wherein a new perforated plate is used in which bent portions are formed by bending at least both edges in the width direction.

A new perforated plate is mounted between the pillar members by fitting the bent portions of the adjacent new perforated plates between the pillar members that hold both ends of the existing soundproof wall and serve to interconnect the adjacent soundproof walls. The method for refreshing a soundproof wall according to claim 5.

Holding the both ends of the existing soundproof wall and facing the bent portions of the end of the new perforated plate fixed to each perforated plate of the adjacent soundproof wall on the pillar member used for the interconnection of the adjacent soundproof walls The method according to claim 5, wherein the column member is concealed.

A new perforated plate in which an edge is bent and a protruding portion parallel to the plate surface is formed on the edge is used, and the periphery of the new porous plate is fixed to an existing soundproof wall by the protruding portion. The method for refreshing a soundproof wall according to any one of claims 1 to 4.