JP3627602B2

JP3627602B2 - Protective fence

Info

Publication number: JP3627602B2
Application number: JP35132399A
Authority: JP
Inventors: 操小林
Original assignee: Nippon Light Metal Co Ltd
Current assignee: Nippon Light Metal Co Ltd
Priority date: 1999-12-10
Filing date: 1999-12-10
Publication date: 2005-03-09
Anticipated expiration: 2019-12-10
Also published as: JP2001164520A

Description

【０００１】
【発明の属する技術分野】
本発明は、高欄等の防護柵であって、例えば鉄道や道路を跨ぐ高架部分等に位置する当該防護柵の一部に投下防止フェンスを設けた防護柵に関する。
【０００２】
【従来の技術】
車道、歩道、車歩道（以下、道路と言う）の両側の長手方向に沿って、高欄や歩道柵等の防護柵が設けられている。係る道路Ｒの下方に別の道路や鉄道等が交差したり、建物に接近している高架部分では、図７（Ａ）と（Ｂ）に示すように、支柱７２間に横梁７４を取り付けた防護柵７０とは別個に、支柱７７と横枠７８間に金網７９を張った投下防止フェンス７６や目隠しフェンスが配置されている。
また、図７（Ｃ），（Ｄ）に示すように、道路Ｒ上のガードレール８２を支持する複数の円柱状支柱８４の上端に細い支柱８６を更に立設し、支柱８６，８６間とこれらの間に架設した上下の横枠８７，８７とに囲まれた面に金網８８を張設する落下防止網付き防護柵８０も提案されてる（実開昭５５−７６２１５号公報参照）。
更に、橋梁部分等においてのみ防護柵の支柱を上方に延長し、係る支柱の延長した部分だけに投下防止フェンスを取り付けることも行われていた。
【０００３】
しかしながら、高架部分のみにフェンス７６を併設した前記防護柵７０は、施行コストが嵩むと共に、かなりの設置スペースが必要となる。
また、上記橋梁部分の支柱にのみ投下防止フェンスを取り付ける防護柵では、橋梁部分が他の道路部分とは異なる構造となる。即ち、旧来から橋梁部分は意匠性が極めて重視されてきたため、橋梁部分は他の箇所に比べて防護柵部分の構造・デザインが共に異なるものが用いられていた。このため、橋梁部分のように上記フェンス７６を併設した部分とその前後の防護柵７０が単独に配置された部分とは、不連続なデザインを有するため、運転者や歩行者等の道路利用者にとって通行時に煩雑な違和感を与える、という問題があった。
更に、前記落下防止網付き防護柵８０は、カードレール８２の上方にのみ金網８８が配置され、ガードレール８２を支持する円柱状支柱８４とその上端の支柱８６とが異なるデザインであるため、運転者等に違和感を与える。しかも、ガードレール８２の下部が空いているため、ここから不用意に物が落下すると共に、歩道を併有する道路の路肩には設置しにくい、という問題があった。
【０００４】
【発明が解決すべき課題】
本発明は、以上に説明した従来の技術における問題点を解決し、例えば高架部分とその前後又は一方を含み且つ高架部分に投下防止フェンスを有する防護柵であって、長手方向に沿って連続したデザインを有し、且つ高架部分では確実に落下防止の安全等が図れると共に、各種の道路において容易に施行できる防護柵を提供することを課題とする。
【０００５】
【課題を解決するための手段】
本発明は、上記の課題を解決するため、例えば高架部分とその他の部分に立設する支柱のデザインを共通化すると共に、高架部分の支柱間における略全面に投下防止フェンスを配設すること、に着想して成されたものである。
即ち、本発明の防護柵（請求項１）は、道路に沿って立設した複数の支柱と、この複数の支柱間に連続して取り付けた一つ以上の横梁と、上記複数の支柱のうち一部における支柱の上端に立設され且つ当該支柱と連続したデザインを有する延長部と、隣接する上記延長部を有する支柱同士の間における略全面に取り付けた投下防止フェンスと、を含み、上記投下防止フェンスは、四辺の枠材とそれらの間に張設した格子網とからなり、上記四辺の枠材は、断面略凹形状の押出形材と、この形材に装着され且つ該形材との間で内外方向に変位した開口部を形成する断面略Ｔ字形又は断面略Ｌ字形の押縁とから構成され、上記格子網を張設する際には、縦・横の上記形材と押縁とが内外逆にして配置される、ことを特徴とする。
【０００６】
これによれば、例えば高架部分とその他の部分の各支柱はデサインが共通し、且つ一つ又は複数の横梁（レール）が長手方向に沿って連続して取り付けられているため、運転者等に違和感を与えず景観上からも優れた防護柵となる。
しかも、高架部分等における支柱同士の間には、略全面に渉り投下防止フェンスが取り付けられるため、落下物を防いで安全性を高め得ると共に、高架部分の付近における高層住宅の居住者のプライバシーを確実に保護することもできる。
更に、投下防止フェンスの張設された格子網の周辺を囲う四辺の枠材は、断面略凹形状の押出形材と、この形材に装着され且つ該形材との間で内外方向に変位した開口部を形成する断面略Ｔ字形又は断面略Ｌ字形の押縁とから構成され、上記格子網を張設する際には、縦・横の上記形材と押縁とが内外逆にして配置される。このため、前記フェンスを設置する高架部分に応じて、各種デザインの格子網を容易に取り付けられると共に、環境や景観にマッチした防護柵にすることができる。しかも、内外に位置をずらして縦・横の細線を直交して溶接した格子網を、一種類の押出形材と押縁とにより、容易に縦・横四辺の枠材間に張設することができる。
【０００７】
尚、前記フェンスは、四辺の枠材と格子網とからなる面ユニットを、高架部分等の支柱間において、上下に複数個を配置した形態としても良い。また、上記格子網は、縦・横の細線を直交して溶接する格子タイプである。更に、上記の内外方向とは、道路の長手方向と直交する向きを指す。
【０００８】
また、前記複数の支柱同士の間に取り付けられる複数の横梁間に、多数の立子を垂直に取り付けた、防護柵（請求項２）も含まれる。
これによれば、歩道を平行して有する道路に沿って防護柵を配置する場合に、歩行者の安全とデザインの統一性が維持できると共に、高架部分における安全性等を確保することも可能である。
加えて、前記投下防止フェンスに用いる最下段の枠材の底面に、遮蔽板を垂設している、防護柵（請求項３）も含まれる。
これによれば、投下防止フェンスと路肩との間も確実に塞げるため、物の投げ出しを確実に防いだり、付近におけるプライバシーの保護を図ることができる。
【０００９】
【発明の実施の形態】
以下において本発明の実施に好適な形態を図面と共に説明する。
図１（Ａ）は、本発明による一つの防護柵１を示す。この防護柵１は、高架部分Ｋを含む道路Ｒに沿って立設した複数の支柱２，２ａと、道路Ｒに沿って支柱２，２ａに取り付けた複数の横梁３，４とを有する。図１（Ｂ），（Ｃ）に示すように、高架部分Ｋ以外の支柱２と高架部分Ｋの両側及び中央に立設した三本の支柱２ａとは、横梁３，４を有する防護柵部分において、共通した形状とサイズからなるデザインを有する。また、図１（Ａ），（Ｃ）に示すように、高架部分Ｋの両側及び中央に立設した三本の支柱２ａの上端には、延長部８が連続して立設され、係る延長部８を含む支柱２ａ，２ａ間には、その略全面に渉って上下一対の面ユニット１１からなる投下防止フェンス１０が取り付けられている。
【００１０】
図２（Ａ），（Ｂ）に示すように、上記支柱２ａは高架部分Ｋ以外の支柱２と同様に、断面エ字形を呈する一体の鋳造材であり、道路Ｒ側のフランジ６とウェブ５と外側のフランジ７とを有する。道路Ｒ側のフランジ６には、大径のアール面６ａと小径のアール面６ｂとが形成され、それぞれパイプ材からなる横梁３，４が図示しないボルト等により固定されている。また、外側のフランジ７は、下部のく字形の窪み部７ａとその上のテーパ部７ｂとを有する。また、フランジ６，７は、幅狭としたウェブ５と共に垂直に連続して立ち上がり、断面エ字形の延長部８を形成している。更に、支柱支柱２ａ（２）は、そのベース５ａを貫通するアンカーボルト５ｂにより、道路Ｒの路肩上に固定されている。一方、投下防止フェンス１０における下側の面ユニット１１における最下段の枠材１２の底面には、断面逆Ｌ字形の遮蔽板９が垂設され、路肩との隙間を塞いでいる。
【００１１】
図３（Ａ），（Ｂ）に示すように、高架部分Ｋの支柱２ａの延長部８，８間には、投下防止フェンス１０における上側の面ユニット１１が取り付けられる。この面ユニット１１は、上下端の水平な枠材１２と左右端の垂直な枠材１３と、これらに囲まれた空間に張設した格子網３０とを有する。係る面ユニット１１における枠材１２，１３間のコーナ部はアングル片３４により連結され、且つ図３（Ａ）に示すように、上側の面ユニット１１は、延長部８における内外のフランジ６，７間にその枠材１３付近を挿入され、バネ金具３５により位置固定される。尚、図２（Ｂ）に示すように、上側の面ユニット１１は上下２カ所においてバネ金具３５により位置固定されると共に、下側の面ユニット１１はチャンネル形の固定金具５ｃとアングル形の支え金具５ｄとにより、支柱２ａのウェブ５に固定されている。
【００１２】
図３（Ｃ），（Ｄ）に示すように、枠材１２，１３は、断面略凹形状の押出形材１４とこれに弾性を活用して装着される押縁２０とからなる。上記形材１４は、アルミニウム合金からなり、断面凹形の中空部１４ａと、該形材１４の内外方向の中央に配置した凹溝１５と、中空部１４ａの一側に突設したＬ形片１６と、他側に突設した板片１７とを長手方向の全長に沿って有する。図３（ｃ）に示すように、板片１７の先端部の内側には、長短一対のリブ１７ａ，１７ｂとこれらに挟まれた小溝１７ｃが設けられている。また、上記凹溝１５の付近には、先端に断面直角三角形の係止部１９を有する係止片１８が突設されている。尚、図３（Ｃ），（Ｄ）中に示す一点鎖線Ｓは、上記形材１４における内外方向の中心線である。
【００１３】
一方、上記押縁２０もアルミニウム合金の押出形材からなり、図３（Ｃ），（Ｄ）に示すように、上記Ｌ形片１６の先端との間で開口部２１を形成する基板２２と、係る基板２２の中間から突設され且つ先端に断面直角三角形の係止部２８を有する長い係止片２６とからなる断面略Ｔ字形を呈している。上記係止部２８は、弾性変形により上記形材１４の係止部１９と係止すると共に、基板２２の一端から突設された短い係止片２４の先端部は、図３（ｃ）に示すように、上記小溝１７ｃに弾性変形して係止する。この際、基板２２における開口部２１側の他端は、形材１４の内外方向の中間に位置するため、押縁２０と形材１４との間に形成される開口部２１は、形材１４の内外方向の何れかに変位している。
尚、枠材１２，１３は、図３（Ｃ），（Ｄ）及び図４（Ａ）に示すように、上記押縁２０の位置が道路Ｒ側か又はその反対側（外側）に位置するように、形材１４の向きを互いに内外逆向きに配置したものである。
【００１４】
図３（Ａ）〜（Ｃ）に示すように、枠材１２，１３における形材１４と押縁２０に挟まれた開口部２１から形材１４の凹溝１５内に、格子網３０の周辺部が挿入される。格子網３０は、表面に亜鉛メッキを施した直径約３ｍｍの鋼線からなる縦・横の細線３１，３２を交差部で溶着したものである。周辺部の細線３１，３２は、各形材１４の凹溝１５内に配置された後、押縁２０が装着される。
また、図３（Ｂ）と図４（Ａ）に示すように、縦側の枠材１３における上下端を覆うに、水平な枠材１２を配置する横通し式配置である場合には、格子網３０の上下の周辺部に各枠材１２の形材１４を配置し、それらに押縁２０を係止して装着した後、格子網３０の左右の周辺部に各枠材１３の形材１４を配置し、それらに押縁２０を装着する。
【００１５】
これにより、内外方向にずれた細線３１，３２を有する格子網３０であっても、枠材１２，１３の形材１４を内外逆に配置して押縁２０を装着することにより、細線３１，３２の周辺部を確実に内外方向に変位した開口部２１内に挿入できる。尚、図４（Ａ）に示すように、枠材１２，１３間の各コーナ部にアングル片３４をブラインドリベット３４ａ等で固定することにより、面ユニット１１が得られる。
図３（Ｅ）はバネ金具３４を示す。該金具３４は、図３（Ｅ）のようにＳＵＰ６等のバネ鋼製の板片を折り曲げ加工したもので、図３（Ａ）中に示すアングル片３４に面接触する垂直片３６と、その下端から斜め上方に立ち上がる長い傾斜片３７と、その先端から垂直片３６寄りに斜めに下がる短い傾斜片３８とからなる。
【００１６】
図３（Ａ）に示すように、一対の支柱２ａの延長部８，８間に上側の面ユニット１１を挿入し、その各コーナ部に固定したアングル片３４と延長部８における道路Ｒ側のフランジ６との間に、長い傾斜片３７を垂直片３６に近付けた状態でバネ金具３４を上方から挿入する。これにより、上側の面ユニット１１が支柱２ａ，２ａ間で位置固定される。この場合、下側の各バネ金具３４は、図２（Ｂ）に示すように、下側の面ユニット１１における上方の各コーナ部も支柱２ａに位置決めする。また、下側の面ユニット１１における各枠材１３の中間部と下端部は、固定金具５ｃと支え金具５ｄにより、支柱２ａにおける下方のウェブ５に固定される。この結果、延長部８を有する支柱２ａ，２ａ間の略全面に渉り、上下一対の面ユニット１１からなる投下防止フェンス１０を取り付けることができる。
【００１７】
尚、下側の面ユニット１１における下辺の枠材１２の底面には、これと路肩との間を塞ぐ前記遮蔽板９が、リベット等により垂設される。
以上のような防護柵１によれば、高架部分Ｋとその他の部分の各支柱２，２ａはデサインが共通し、且つ複数の横梁３，４が長手方向に沿って同じデザインで連続して取り付けられているため、運転者等に違和感を与えず景観上からも優れた防護柵となる。しかも、高架部分Ｋにおける支柱２ａ，２ａ間には、略全面に渉って投下防止フェンス１０が取り付けられ且つその最下段に遮蔽板９が垂設されるため、落下物を防いで安全性を高めることができる。
更に、フェンス１０を構成する面ユニット１１は、前記格子網３０であっても一種類の押出形材１４と押縁２０のみを用い、且つ内外方向に開口部２１を変位させた枠材１３，１４を用いることにより、容易に構成することができる。
【００１８】
図４（Ｂ），（Ｃ）は、異なる形態の枠材４０，４２を示す前記図３（Ｃ），（Ｄ）と同様な断面図である。枠材４０，４２も内外方向の位置を逆にした断面略凹形状の押出形材４１と、これに挿通して装着する断面略Ｌ字形の押縁５０とからなる。図４（Ｂ），（Ｃ）に示すように、上記形材４１は、断面凹形の中空部４３と該形材４１の内外方向に変位して配置した開口４５よりも内部が幅広の底広凹溝４４と、中空部４３の一側に突設したＬ形片４８と、他側に突設した板片４６とを長手方向の全長に沿って有する。板片４６先端部の内側にはリブ４７が突設されている。尚、図４（Ｂ）で底広凹溝４４の開口４５における上側の縁辺は、形材４１の内外方向における略中間に位置し、図４（Ｂ），（Ｃ）中の一点鎖線Ｓは中心線を示す。
【００１９】
一方、押縁５０は、基板５２とその中間から上記底広凹溝４４側に延びたウェブ５６とからなる断面略Ｌ字形を呈する。基板５２の一端には上記リブ４７に接触して当該一端を位置決めする板片５４が突設され、ウェブ５６の先端には長手（押出）方向から凹溝４４内に挿入されるアンカー片５８が直角に突設されている。更に、形材４１の凹溝４４内にアンカー片５８を長手方向に沿って挿入すると、押縁５０が形材４１に装着されると共に、基板５２の他端と形材４１におけるＬ形片４８の先端との間には、内外方向に変位した開口部４９が形成される。
そして、各形材４１におけるＬ形片４８の内側に、格子網３０の周辺部における細線３１，３２を配置し、この状態で押縁５０のアンカー片５８を底広凹溝４４内に長手方向に沿って挿入して、形材４１に押縁５０を装着する。
【００２０】
これにより、四辺における一対ずつの枠材４０，４２が形成され、且つこれらの内周面に内外方向に変位した開口部４９が形成される。従って、四辺の枠材４０，４２に囲まれた空間に格子網３０を張設した面ユニット１１や、或いは係るユニット１１を複数個併設した前記投下防止フェンス１０を形成することができる。
尚、上記形態において、図３（Ｂ），図４（Ａ）と同様に、縦側の枠材４２における上下端を覆うため水平な枠材４０を横通し式で配置する場合、上記図示の形態とは逆に、縦側の枠材４２を先に格子網３０の左右両側に組み付け、その後で水平な枠材４０を組み付ける。この場合、水平な枠材４０の押縁５０は、各コーナ部のアングル片３４により位置固定される。
【００２１】
図５（Ａ），（Ｂ）は、参考形態の防護柵６０を示す。尚、以下において前記形態と共通する要素や部分には、共通の符号を用いるものとする。
図５（Ａ），（Ｂ）に示すように、防護柵６０も高架部分Ｋには、支柱２ａ，２ａが立設され、図示しないそれ以外の道路Ｒの路肩上には前記支柱２，２が立設され、平坦面を一部に有する太径で上下一対の横梁３ａ及び細径の横梁４が、支柱２，２ａ，２ａ，２に連続して固定されている。上記横梁３ａ，３ａ間には、多数の立子（バラスター）３ｂが等間隔にて垂直に取り付けられ、歩行者の安全を図っている。
また、支柱２ａ，２ａ間には、略全面に渉って上下一対の面ユニット６４からなる投下防止フェンス６２が取付られ、且つ下側の面ユニット６４における最下段の枠材１２の底面には、前記同様に遮蔽板９が垂設されている。
【００２２】
図５（Ａ），（Ｂ）及び図６（Ａ）に示すように、面ユニット６４は上下の水平な枠材１２と左右の垂直な枠材１３と、これらに囲まれた空間に固定したパネル６６とからなる。パネル６６は、長方形で板厚が約５ｍｍの透明又は半透明なポリカーボネートからなる。図６（Ｂ），（Ｃ）に示すように、枠材１２，１３は前記同様の形材１４とこれに装着する押縁２０とからなり、互いに内外方向の位置が共通している。このため、各コーナ部をアングル片３４で連結された四辺の枠材１２，１３の内周には、同一垂直面内に各開口部２１が形成されるため、上記平坦なパネル６６を一つ種類の形材１４と押縁２０により容易に固定することができる。従って、面ユニット６４及び投下防止フェンス６２を、前記格子網３０用の形材１４や押縁２０と共通して用いることにより、容易に形成することができる。
【００２３】
尚、図６（Ｄ），（Ｅ）に示すように、枠材１２，１３に替えて枠材４０，４２を用い、これらを形成する形材４１と押縁５０とを図示のように内外方向の位置が共通するようにして連結することによっても、上記と同様にパネル６６を容易に固定することができ、且つ面ユニット６４及び投下防止フェンス６２を形成できる。
以上のような防護柵６０によれば、横梁３ａ，３ａ間に多数の立子３ｂを垂設したので、歩行者の安全が図れると共に、各支柱２，２ａのデサインが共通し且つ横梁３ａ，４と立子３ｂ連続しているため、歩行者や運転者に違和感を与えない。しかも、高架部分Ｋにおける支柱２ａ，２ａ間には、略全面に渉って投下防止フェンス６０が取り付けられ且つその下端に遮蔽板９が垂設されるため、落下物を防いで安全性を高められ、且つ不透明なパネルを用いることにより付近のプライバシーを保護することができる。
【００２４】
本発明の防護柵は、以上において説明した各形態に限定されるものではない。
例えば、高架部分Ｋのように防護柵の一部に立設する前記延長部８を有する支柱２ａを二本のみ又は三本以上とし、各支柱２ａ間に前記投下防止フェンス１０を取り付けても良い。
また、前記投下防止フェンス１０は、支柱２ａ，２ａ間の略全面に渉る一つの面ユニット１１としたり、又は上下方向に三段以上の面ユニット１１を配設しても良い。更には、支柱２ａの延長部８，８間のフェンス１０における面ユニット１１には、各種の表示を施すことも可能である。
更に、格子網３０の厚さを変更する場合、前記押縁２０の形状のみを変更することにより、前記形材１４をそのまま活用できる。
加えて、前記枠材１２，１３を構成する形材１４は、その中空部１４ａを省略したり、或いはそのＬ形片１６を断面角形の中空部としても良い。
【００２５】
【発明の効果】
以上において説明した本発明の防護柵によれば、例えば高架部分とその他の部分の各支柱はデサインが共通し、且つ一つ又は複数の横梁が長手方向に沿って連続して取り付けられているので、運転者等に違和感を与えず景観上からも優れた防護柵となる。しかも、高架部分等における支柱同士の間には、略全面に渉り投下防止フェンスが取り付けられるため、落下物を防いで安全性を高められ、或いは付近の高層住宅居住者のプライバシーを確実に保護することもできる。更に、内外に位置をずらして縦・横の細線を直交しつつ溶接した格子網を、一種類の押出形材と押縁とにより、容易に縦・横四辺の枠材間に張設することができる。
【図面の簡単な説明】
【図１】（Ａ）は本発明の防護柵の一形態を示す概略図、（Ｂ）は（Ａ）中のＢ−Ｂ線に沿った断面図、（Ｃ）は（Ａ）中のＣ−Ｃ線に沿った断面図。
【図２】（Ａ）は図１（Ａ）の防護柵における高架部分の一部拡大図、（Ｂ）は（Ａ）中のＢ−Ｂ線に沿った断面図。
【図３】（Ａ）は図２（Ａ）に示した防護柵の高架部分における一部平面図、（Ｂ）は投下防止フェンスを構成する一つの面ユニットの正面図、（Ｃ）は（Ｂ）中のＣ−Ｃ線に沿った断面図、（ｃ）は（Ｃ）中の部分拡大図、（Ｄ）は（Ｂ）中のＤ−Ｄ線に沿った断面図、（Ｅ）は上記フェンスを位置決めするバネ金具の斜視図。
【図４】（Ａ）は図３（Ｂ）で示した面ユニットにおける部分斜視図、（Ｂ）及び（Ｃ）は異なる枠材を用いた形態における図３（Ｃ），（Ｄ）と同様の断面図。
【図５】（Ａ）は参考形態の防護柵における高架部分を示す概略図、（Ｂ）は（Ａ）中のＢ−Ｂ線に沿った断面図。
【図６】（Ａ）は図５で示した防護柵の投下防止フェンスを構成する一つの面ユニットの正面図、（Ｂ）は（Ａ）中のＢ−Ｂ線に沿った断面図、（Ｃ）は（Ａ）中のＣ−Ｃ線に沿った断面図、（Ｄ），（Ｅ）は異なる参考形態の枠材を用いた（Ｂ），（Ｃ）と同様に断面図。
【図７】（Ａ）は従来の防護柵を示す概略図、（Ｂ）は（Ａ）中のＢ−Ｂ線に沿った断面図、（Ｃ）は異なる従来の防護柵を示す概略図、（Ｄ）は（Ｃ）中のＤ−Ｄ線に沿った断面図。
【符号の説明】
１……………………………防護柵
２……………………………支柱
２ａ…………………………支柱（一部の支柱）
３，３ａ，４………………横梁
３ｂ…………………………立子
８……………………………延長部
９……………………………遮蔽板
１０…………………………投下防止フェンス
１２，１３，４０，４２…枠材
１４，４１…………………押出形材
２０，５０…………………押縁
２１，４９…………………開口部
３０…………………………格子網
Ｒ……………………………道路
Ｋ……………………………高架部分[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a safety barrier, such as a railing, to guard fence provided with dropping prevention fence part of the safety barrier located elevated portion or the like straddling the example railways and roads.
[0002]
[Prior art]
Protective fences such as railings and sidewalk fences are provided along the longitudinal direction of both sides of the roadway, sidewalk, and sidewalk (hereinafter referred to as road). At an elevated part where another road or railroad crosses below the road R or approaches the building, a cross beam 74 is attached between the columns 72 as shown in FIGS. 7 (A) and (B). Separately from the protective fence 70, a drop prevention fence 76 and a blindfold fence in which a wire net 79 is stretched between a support 77 and a lateral frame 78 are arranged.
Further, as shown in FIGS. 7C and 7D, a thin column 86 is further erected on the upper ends of a plurality of columnar columns 84 that support the guard rail 82 on the road R, and between these columns 86 and 86. There has also been proposed a protective fence 80 with a fall prevention net in which a wire net 88 is stretched on a surface surrounded by upper and lower horizontal frames 87, 87 (see Japanese Utility Model Laid-Open No. 55-76215).
Furthermore, it has also been practiced to extend the support fence post upward only at the bridge portion or the like, and to attach the drop prevention fence only to the extended portion of the support post.
[0003]
However, the protective fence 70 in which the fence 76 is provided only in the elevated part is expensive to implement and requires a considerable installation space.
Moreover, in the protective fence which attaches a drop prevention fence only to the support | pillar of the said bridge part, a bridge part becomes a structure different from another road part. In other words, since the design of the bridge portion has been extremely important since the past, the bridge portion has a different structure and design of the protective fence portion compared to other portions. For this reason, since the part where the fence 76 is provided side by side, such as a bridge part, and the part where the protective fence 70 before and behind the part is arranged independently have a discontinuous design, road users such as drivers and pedestrians However, there was a problem that it felt awkward when traveling.
Further, the guard fence 80 with the fall prevention net has a metal net 88 disposed only above the card rail 82, and the columnar column 84 supporting the guard rail 82 and the column 86 at the upper end thereof are different in design. Give a sense of incongruity In addition, since the lower part of the guard rail 82 is empty, there is a problem that an object falls inadvertently from here and is difficult to install on the shoulder of a road having a sidewalk.
[0004]
[Problems to be Solved by the Invention]
The present invention solves the problems in the prior art described above, for example, a protective fence including an elevated part and its front and rear or one side and having a drop prevention fence on the elevated part, which is continuous along the longitudinal direction. It is an object of the present invention to provide a protective fence that has a design and can reliably prevent falling at an elevated part and can be easily implemented on various roads.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention, for example, commonizes the design of the support columns standing on the elevated portion and other portions, and disposes a drop prevention fence on substantially the entire surface between the support columns of the elevated portion, Inspired by the idea.
That is, the protective fence according to the present invention (Claim 1) includes a plurality of pillars erected along a road, one or more horizontal beams continuously attached between the plurality of pillars, and the plurality of pillars. seen including an extension portion having a design which is continuous with the upper end is erected on and the struts of the strut in part, the drop prevention fence attached to substantially the entire surface between the struts each having the extension adjacent the said The drop prevention fence is composed of a frame material having four sides and a lattice net stretched between them. The frame material on the four sides is an extruded profile having a substantially concave cross section, and is attached to the profile and the profile. When the lattice net is stretched, the vertical and horizontal shape members and the pressing edges are formed. And are arranged inside out.
[0006]
According to this, for example, each column of the elevated part and the other part has a common design, and one or a plurality of cross beams (rails) are continuously attached along the longitudinal direction. It is an excellent protective fence from the landscape without giving a sense of incongruity.
In addition, a fence to prevent dropping is installed between the support posts in the elevated part, etc., so that it can prevent falling objects and improve safety, and the privacy of residents in high-rise houses in the vicinity of the elevated part Can be reliably protected.
In addition, the four-sided frame material that surrounds the periphery of the lattice net on which the drop prevention fence is stretched is an extruded profile with a substantially concave cross section, and is displaced inward and outward between the profile and the profile. When the lattice net is stretched, the vertical and horizontal shape members and the pressing edges are arranged inside out. The For this reason, according to the elevated part which installs the said fence, while being able to attach the lattice network of various designs easily, it can be set as the protection fence which matched the environment and the scenery. Moreover, it is possible to easily stretch a grid network in which vertical and horizontal fine wires are orthogonally welded while shifting the position inside and outside, between the frame materials on the vertical and horizontal sides using one type of extruded shape and pressing edge. I can .
[0007]
Note that the fence may have a form in which a plurality of surface units composed of a frame material of four sides and a lattice net are vertically arranged between support columns such as an elevated portion. The lattice network is a lattice type in which vertical and horizontal thin wires are welded orthogonally. Furthermore, the above-described inner and outer directions indicate directions orthogonal to the longitudinal direction of the road .
[0008]
Moreover, the protection fence (Claim 2) to which many standpieces were attached vertically between the some horizontal beam attached between these some support | pillars is also contained .
According to this, when arranging protective fences along a road with parallel sidewalks, it is possible to maintain the safety of pedestrians and the uniformity of the design, and it is possible to ensure the safety etc. in the elevated part. There is .
In addition, a protective fence (Claim 3) is also included in which a shielding plate is suspended from the bottom surface of the lowermost frame member used for the drop prevention fence.
According to this, since the space between the drop prevention fence and the shoulder is also reliably closed, it is possible to reliably prevent throwing of objects and protect privacy in the vicinity.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In the following, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1A shows one protective fence 1 according to the present invention. The protective fence 1 includes a plurality of support columns 2 and 2a erected along the road R including the elevated portion K, and a plurality of transverse beams 3 and 4 attached to the support columns 2 and 2a along the road R. As shown in FIGS. 1 (B) and 1 (C), the column 2 other than the elevated portion K and the three columns 2a erected on both sides and the center of the elevated portion K are guard fence portions having transverse beams 3 and 4. , Has a design with a common shape and size. Further, as shown in FIGS. 1A and 1C, extension portions 8 are continuously provided on the upper ends of the three columns 2a provided upright on both sides and in the center of the elevated portion K, and the extension A drop prevention fence 10 including a pair of upper and lower surface units 11 is attached between the support columns 2a and 2a including the portion 8 so as to extend over substantially the entire surface.
[0010]
As shown in FIGS. 2A and 2B, the column 2a is an integral casting material having an E-shaped cross section, like the column 2 other than the elevated portion K, and has a flange 6 and a web 5 on the road R side. And an outer flange 7. The flange 6 on the road R side is formed with a large-diameter round surface 6a and a small-diameter round surface 6b, and horizontal beams 3 and 4 made of pipe materials are fixed by bolts or the like (not shown). Further, the outer flange 7 has a lower rectangular recess 7a and a tapered portion 7b thereon. Further, the flanges 6 and 7 rise vertically continuously with the narrow web 5 to form an extension 8 having an E-shaped cross section. Further, the support column 2a (2) is fixed on the shoulder of the road R by anchor bolts 5b penetrating the base 5a. On the other hand, on the bottom surface of the lowermost frame member 12 in the lower surface unit 11 of the drop prevention fence 10, a shield plate 9 having an inverted L-shaped cross section is suspended to close the gap with the road shoulder.
[0011]
As shown in FIGS. 3A and 3B, the upper surface unit 11 in the drop prevention fence 10 is attached between the extensions 8 and 8 of the support column 2 a of the elevated portion K. The surface unit 11 includes a horizontal frame member 12 at the upper and lower ends, a vertical frame member 13 at the left and right ends, and a lattice network 30 stretched in a space surrounded by these. The corner portion between the frame members 12 and 13 in the surface unit 11 is connected by an angle piece 34, and the upper surface unit 11 includes inner and outer flanges 6 and 7 in the extension portion 8 as shown in FIG. The vicinity of the frame member 13 is inserted therebetween, and the position is fixed by the spring metal fitting 35. As shown in FIG. 2 (B), the upper surface unit 11 is fixed at two positions by spring metal fittings 35, and the lower surface unit 11 is supported by a channel-type fixing metal 5c and an angle-shaped support. It is being fixed to the web 5 of the support | pillar 2a with the metal fitting 5d.
[0012]
As shown in FIGS. 3C and 3D, the frame members 12 and 13 include an extruded shape member 14 having a substantially concave cross section and a pressing edge 20 attached to the extruded shape member 14 by utilizing elasticity. The shape member 14 is made of an aluminum alloy, and has a hollow portion 14a having a concave cross section, a concave groove 15 disposed in the center of the shape member 14 in the inner and outer directions, and an L-shaped piece projecting from one side of the hollow portion 14a. 16 and a plate piece 17 protruding from the other side along the entire length in the longitudinal direction. As shown in FIG. 3C, a pair of long and short ribs 17 a and 17 b and a small groove 17 c sandwiched between them are provided inside the tip of the plate piece 17. Further, a locking piece 18 having a locking portion 19 having a triangular cross-section at the tip is provided in the vicinity of the concave groove 15. 3C and 3D, the alternate long and short dash line S is the center line in the inner and outer directions of the profile 14.
[0013]
On the other hand, the pressing edge 20 is also made of an extruded shape of an aluminum alloy, and as shown in FIGS. 3C and 3D, a substrate 22 that forms an opening 21 between the tip of the L-shaped piece 16; It has a substantially T-shaped cross section that is formed from a long locking piece 26 that protrudes from the middle of the substrate 22 and has a locking portion 28 having a triangular cross section at the tip. The locking portion 28 is locked with the locking portion 19 of the shape member 14 by elastic deformation, and the tip end portion of the short locking piece 24 protruding from one end of the substrate 22 is shown in FIG. As shown, it is elastically deformed and locked in the small groove 17c. At this time, since the other end of the substrate 22 on the side of the opening 21 is located in the middle of the shape 14 in the inner and outer direction, the opening 21 formed between the pressing edge 20 and the shape 14 It is displaced in either the inside or outside direction.
As shown in FIGS. 3 (C), 3 (D) and 4 (A), the frame members 12, 13 are arranged such that the position of the pressing edge 20 is on the road R side or on the opposite side (outside). In addition, the direction of the profile 14 is arranged in the opposite direction inside and outside.
[0014]
As shown in FIGS. 3 (A) to 3 (C), the peripheral portion of the lattice network 30 is inserted into the concave groove 15 of the shape member 14 from the opening 21 sandwiched between the shape member 14 and the pressing edge 20 in the frame members 12 and 13. Is inserted. The lattice network 30 is formed by welding vertical and horizontal thin wires 31 and 32 made of steel wires having a diameter of about 3 mm, the surfaces of which are galvanized, at the intersections. After the peripheral thin wires 31 and 32 are arranged in the concave grooves 15 of the respective profiles 14, the pressing edges 20 are mounted.
Further, as shown in FIGS. 3 (B) and 4 (A), in the case of a horizontal arrangement in which the horizontal frame member 12 is arranged to cover the upper and lower ends of the vertical frame member 13, a lattice is used. After the shape members 14 of the respective frame members 12 are arranged on the upper and lower peripheral portions of the mesh 30 and the pressing edges 20 are locked and attached thereto, the shape members 14 of the respective frame members 13 are disposed on the left and right peripheral portions of the lattice mesh 30. And the pressing edge 20 is attached to them.
[0015]
Thereby, even if it is the grid | lattice net | network 30 which has the fine wires 31 and 32 which shifted | deviated to the inside / outside direction, by arrange | positioning the shape material 14 of the frame materials 12 and 13 inside and outside reversely, and mounting | wearing with the pressing edge 20, it will be fine wires 31 and 32 Can be inserted into the opening 21 that has been displaced inward and outward with certainty. As shown in FIG. 4A, the surface unit 11 is obtained by fixing the angle pieces 34 to the corner portions between the frame members 12 and 13 with blind rivets 34a or the like.
FIG. 3E shows the spring metal fitting 34. The metal fitting 34 is formed by bending a spring steel plate piece such as SUP6 as shown in FIG. 3 (E), a vertical piece 36 in surface contact with the angle piece 34 shown in FIG. It consists of a long inclined piece 37 rising obliquely upward from the lower end and a short inclined piece 38 falling obliquely toward the vertical piece 36 from its tip.
[0016]
As shown in FIG. 3A, the upper surface unit 11 is inserted between the extension portions 8 and 8 of the pair of support columns 2a, and the angle piece 34 fixed to each corner portion and the road portion R side of the extension portion 8 on the road R side. A spring metal fitting 34 is inserted between the flange 6 and the flange 6 with the long inclined piece 37 approaching the vertical piece 36 from above. Thereby, the position of the upper surface unit 11 is fixed between the support columns 2a and 2a. In this case, as shown in FIG. 2B, the lower spring metal fittings 34 also position the upper corner portions of the lower surface unit 11 on the column 2a. Moreover, the intermediate part and lower end part of each frame member 13 in the lower surface unit 11 are fixed to the lower web 5 in the support column 2a by the fixing metal fitting 5c and the support metal fitting 5d. As a result, it is possible to attach the drop prevention fence 10 composed of a pair of upper and lower surface units 11 over substantially the entire surface between the support columns 2a, 2a having the extension portion 8.
[0017]
Note that the shielding plate 9 that closes the gap between the lower frame member 12 and the road shoulder of the lower surface unit 11 is suspended by a rivet or the like.
According to the protective fence 1 as described above, the elevated portion K and the other support columns 2 and 2a have the same design, and a plurality of transverse beams 3 and 4 are continuously attached with the same design along the longitudinal direction. Therefore, it is an excellent protection fence from the scenery without giving the driver a sense of incongruity. In addition, a drop-preventing fence 10 is installed between the support columns 2a and 2a in the elevated portion K so as to extend over substantially the entire surface, and a shielding plate 9 is suspended at the lowest stage thereof. Can be increased.
Further, the surface unit 11 constituting the fence 10 uses only one type of extruded shape member 14 and the pressing edge 20 even in the lattice network 30, and the frame members 13 and 14 in which the opening 21 is displaced in the inner and outer directions. By using this, it can be easily configured.
[0018]
FIGS. 4B and 4C are cross-sectional views similar to FIGS. 3C and 3D showing the frame members 40 and 42 in different forms. The frame members 40 and 42 are also composed of an extruded shape member 41 having a substantially concave cross section whose positions in the inside and outside directions are reversed, and a pressing edge 50 having a substantially L shape in cross section, which is inserted through and attached thereto. As shown in FIGS. 4B and 4C, the shape member 41 has a hollow portion 43 having a concave cross section and a bottom that is wider than the opening 45 that is displaced inward and outward of the shape member 41. A wide groove 44, an L-shaped piece 48 projecting on one side of the hollow portion 43, and a plate piece 46 projecting on the other side are provided along the entire length in the longitudinal direction. A rib 47 projects from the inside of the tip of the plate piece 46. In FIG. 4B, the upper edge of the opening 45 of the wide groove 44 is positioned approximately in the middle of the profile 41 in the inner and outer directions, and the alternate long and short dash line S in FIGS. The center line is shown.
[0019]
On the other hand, the pressing edge 50 has a substantially L-shaped cross section composed of a substrate 52 and a web 56 extending from the middle to the wide concave groove 44 side. A plate piece 54 is provided at one end of the substrate 52 so as to contact the rib 47 and position the one end, and an anchor piece 58 inserted into the groove 44 from the longitudinal (extrusion) direction is provided at the tip of the web 56. Projected at a right angle. Further, when the anchor piece 58 is inserted into the concave groove 44 of the shape member 41 along the longitudinal direction, the pressing edge 50 is attached to the shape member 41, and the other end of the substrate 52 and the L-shaped piece 48 of the shape member 41. An opening 49 displaced inward and outward is formed between the tip.
And the thin wires 31 and 32 in the peripheral part of the lattice net 30 are arranged inside the L-shaped piece 48 in each shape member 41, and in this state, the anchor piece 58 of the pressing edge 50 is placed in the wide concave groove 44 in the longitudinal direction. Then, the pressing edge 50 is attached to the shape member 41.
[0020]
As a result, a pair of frame members 40 and 42 on the four sides are formed, and an opening 49 displaced inward and outward is formed on the inner peripheral surface thereof. Therefore, it is possible to form the surface unit 11 in which the lattice net 30 is stretched in the space surrounded by the frame members 40 and 42 on the four sides, or the dropping prevention fence 10 in which a plurality of such units 11 are provided.
3B and 4A, in the above embodiment, when the horizontal frame member 40 is arranged in a horizontal manner so as to cover the upper and lower ends of the vertical frame member 42, the above-described illustration is used. Contrary to the form, the frame member 42 on the vertical side is first assembled on both the left and right sides of the lattice network 30, and then the horizontal frame member 40 is assembled. In this case, the pressing edge 50 of the horizontal frame member 40 is fixed in position by the angle piece 34 of each corner portion.
[0021]
5A and 5B show a protective fence 60 of a reference form. In the following description, common reference numerals are used for elements and portions common to the above-described embodiments.
As shown in FIGS. 5 (A) and 5 (B), the guard fence 60 is also provided with support columns 2a, 2a on the elevated portion K, and the support columns 2, 2 on the shoulders of the other road R (not shown). And a pair of large-diameter upper and lower horizontal beams 3a and a small-diameter horizontal beam 4 partially having a flat surface are fixed to the columns 2, 2a, 2a, 2 continuously. Between the cross beams 3a and 3a, a large number of vertical members (ballasters) 3b are vertically attached at equal intervals to ensure the safety of pedestrians.
Further, a drop-preventing fence 62 comprising a pair of upper and lower surface units 64 is attached between the support columns 2a and 2a, and the bottom surface of the lowermost frame member 12 in the lower surface unit 64 is attached to the bottom surface unit 64. In the same manner as described above, the shielding plate 9 is provided vertically.
[0022]
As shown in FIGS. 5A, 5B, and 6A, the surface unit 64 is fixed to the upper and lower horizontal frame members 12, the left and right vertical frame members 13, and a space surrounded by these. And a panel 66. The panel 66 is made of a transparent or translucent polycarbonate having a rectangular shape and a thickness of about 5 mm. As shown in FIGS. 6B and 6C, the frame members 12 and 13 are composed of the same shape member 14 and the pressing edge 20 attached thereto, and the positions in the inner and outer directions are common to each other. For this reason, since the openings 21 are formed in the same vertical plane on the inner periphery of the four-side frame members 12 and 13 in which the corner portions are connected by the angle pieces 34, one flat panel 66 is provided. It can be easily fixed by the type of shape member 14 and the pressing edge 20. Therefore, the surface unit 64 and the drop prevention fence 62 can be easily formed by using them in common with the shape member 14 and the pressing edge 20 for the lattice net 30.
[0023]
As shown in FIGS. 6D and 6E, frame members 40 and 42 are used instead of the frame members 12 and 13, and the shape member 41 and the pressing edge 50 forming them are inward and outward as shown in the drawing. The panel 66 can be easily fixed in the same manner as described above, and the surface unit 64 and the drop-preventing fence 62 can be formed by connecting them so that their positions are common.
According to the protective fence 60 as described above, since many standing members 3b are vertically provided between the horizontal beams 3a and 3a, the safety of the pedestrian can be ensured, and the designs of the respective columns 2 and 2a are common and the horizontal beams 3a and 4 are provided. Since the Tachiko 3b is continuous, the pedestrian and driver are not discomforted. In addition, a drop-preventing fence 60 is attached between the columns 2a and 2a in the elevated portion K so as to cover almost the entire surface, and the shielding plate 9 is suspended at the lower end thereof, thereby preventing falling objects and improving safety. And privacy can be protected by using an opaque panel.
[0024]
The guard fence of the present invention is not limited to each form described above.
For example, even if there are only two or three or more support columns 2a having the extension portion 8 standing on a part of the protective fence like the elevated portion K, and the drop prevention fence 10 is attached between the support columns 2a. good.
Moreover, the drop prevention fence 1 0 struts 2a, or a ranging between one surface unit 1 1 in substantially the entire surface of the inter-2a, or in the vertical direction may be disposed surface unit 1 1 of the three or more stages . Furthermore, the surface unit 1 1 definitive fence 1 0 between the extension portions 8 of the posts 2a, can be subjected to various displays.
Furthermore, when changing the thickness of the grating net 3 0, by changing only the shape of the batten 2 0, the profile 1 4 it can be utilized.
In addition, profile 1 4 forming the frame member 12, 1 3, omitting the hollow portion 1 4a, or may be the L-shaped piece 1 6 as a hollow section of rectangular cross section.
[0025]
【The invention's effect】
According to the guard fence of the present invention described above, for example, each support column of the elevated part and the other part has a common design, and one or more transverse beams are continuously attached along the longitudinal direction. It will be an excellent protective fence from the scenery without giving the driver a sense of incongruity. In addition, a fence to prevent dropping is attached between the columns in the elevated section, etc., so that it can prevent falling objects and increase safety, or protect the privacy of residents in nearby high-rise buildings. You can also Furthermore, the lattice network welded with orthogonal vertical and horizontal fine lines by shifting the position on the inner outer, by the one kind of the extruded profile and ledges, to stretched between the frame material easily vertically and horizontally four sides Can do.
[Brief description of the drawings]
FIG. 1A is a schematic view showing an embodiment of a guard fence of the present invention, FIG. 1B is a cross-sectional view taken along line BB in FIG. 1A, and FIG. 1C is C in FIG. Sectional drawing along line -C.
2A is a partially enlarged view of an elevated portion of the guard fence of FIG. 1A, and FIG. 2B is a cross-sectional view taken along line BB in FIG.
3A is a partial plan view of the elevated portion of the guard fence shown in FIG. 2A, FIG. 3B is a front view of one surface unit constituting the drop prevention fence, and FIG. B) A cross-sectional view taken along the line C-C in FIG. 5C, (c) a partially enlarged view in (C), (D) a cross-sectional view taken along the line D-D in (B), and (E) The perspective view of the spring metal fitting which positions the said fence.
4A is a partial perspective view of the surface unit shown in FIG. 3B, and FIGS. 4B and 3C are the same as FIGS. 3C and 3D in a form using different frame members. FIG.
FIG. 5A is a schematic view showing an elevated portion of a protective fence according to a reference embodiment, and FIG. 5B is a cross-sectional view taken along line BB in FIG.
6A is a front view of one surface unit constituting the drop prevention fence of the protective fence shown in FIG. 5, FIG. 6B is a cross-sectional view taken along the line BB in FIG. (C) is a cross-sectional view taken along line CC in (A), and (D) and (E) are cross-sectional views similar to (B) and (C) using frame materials of different reference forms.
7A is a schematic diagram showing a conventional guard fence, FIG. 7B is a cross-sectional view taken along line BB in FIG. 7A, and FIG. 7C is a schematic diagram showing a different conventional guard fence; (D) is sectional drawing along the DD line in (C).
[Explanation of symbols]
1 …………………………… Guard fence 2 ………………………… Post 2a ………………………… Post (part of the post)
3, 3a, 4 ……………… Horizontal beam 3b ………………………… Tachiko 8 ………………………… Extension 9 …………………………… Shield plate 10 ... ........................... Drop-preventing fences 12, 13, 40, 42 ... Frame members 14, 41 ............... Extruded profiles 20, 50 ... ……………… Pushing edge 21, 49 ..................... Opening 30 ......... ……………… Lattice network R ……………………………… Road K ………………………… ... elevated part

Claims

A plurality of pillars erected along the road,
One or more transverse beams continuously attached between the plurality of columns;
An extension portion that is erected on the upper end of a column in a part of the plurality of columns and has a design continuous with the column;
And dropping prevention fence attached to substantially the entire surface between the struts each having the extension adjacent, only including,
The above-mentioned drop prevention fence is composed of a frame material of four sides and a lattice net stretched between them.
The four-sided frame member has an approximately T-shaped cross section or a substantially L-shaped cross section that forms an extruded shape having a substantially concave cross section and an opening that is attached to the shape and is displaced inward and outward between the shape. When the lattice net is stretched, the vertical and horizontal shape members and the pressing edges are arranged inside out .
A protective fence characterized by that.

The protective fence according to claim 1, wherein a plurality of vertical members are vertically attached between a plurality of transverse beams attached between the plurality of support columns.

A shielding plate is suspended from the bottom surface of the lowermost frame member used for the drop prevention fence ,
The protective fence according to claim 1 or 2, characterized in that.