JP2004316286A

JP2004316286A - Mechanical anchor for injecting adhesive, and steel plate bonding device for concrete structure

Info

Publication number: JP2004316286A
Application number: JP2003113062A
Authority: JP
Inventors: Hideyo Honma; 英世本間; Atsushi Shinomura; 篤史篠村; Keiji Imamura; 圭治今村; Yasuhide Tomimatsu; 泰秀冨松; Wataru Jinnai; 渉陣内; Kazuyuki Wakana; 和之若菜
Original assignee: Sho Bond Corp
Current assignee: Sho Bond Corp
Priority date: 2003-04-17
Filing date: 2003-04-17
Publication date: 2004-11-11

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mechanical anchor for injecting an adhesive, and a steel plate bonding device for a concrete structure improving construction work efficiency and steel plate strength. <P>SOLUTION: A wedge-shaped bolt 6 is generally formed of approximately cylindrical or prismatic shape and formed with a wedge part 6a on one side from the center part in the lengthwise direction and a bolt part 6b on the other side. The wedge part 6a is formed with a wedge-like slant face in a stretch on the outer peripheral surface from an upper end part 6c to a base end part 6d. The wedge-shaped bolt 6 is formed with a first adhesive through hole 6f passing through approximately the center of cross section in the lengthwise direction to allow the injected adhesive to flow through. Further, a single or a plurality of second adhesive through holes 6g passing through orthogonally almost at a right-angled direction to the lengthwise direction of the wedge-shaped bolt 6 and communicating with the first adhesive through hole 6f are disposed in suitable positions of the wedge part 6a or the bolt part 6b in intermediate positions in the lengthwise direction of the wedge-shaped bolt 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、床版等コンクリート躯体やコンクリート構造物に鋼板を接着補強する際に使用する接着剤注入用機械式アンカー及びコンクリート構造物の鋼板接着装置に関する。
【０００２】
【従来の技術】
従来、この種のコンクリート構造物に鋼板等を接合する技術やそれに使用する接着剤等の受け部材に関しては、一例として、図５（ａ）（ｂ）及び図６（ａ）（ｂ）に示すような特公昭５９−２３５８４号公報に開示したものがあった。
これについて説明すれば、橋梁のコンクリート床版１の下面１ａに鋼板２を接合する場合においては、隙間Ａに図６（ａ）に示す接着剤受け部材３を取り付ける。４は接着剤注入孔であり、別置した樹脂注入器具（図示せず）により接着剤を注入するためにある。５は床版下１の面１ａに鋼板２を取り付けるホールインアンカーである。尚、上記鋼板２の廻りは接着剤が外部に流出しないようにシール部材により密閉されている。
【０００３】
図６（ａ）は接着剤受け部材３の一つの例を示すものであり、一方の接続パイプ３ａ、変形部３ｂ、他方の接続パイプ３ｃで構成されている。該、一方、他方の接続パイプ３ａ、３ｃは金属またはプラスチックで構成されており変形部３ｂは流出した接着剤の流出圧力により圧力が加わったとき内部容積を大きくするように自らが膨張するようなゴム等弾性体からなるパイプ状で構成されている。
この変形部３ｂとしてのゴムパイプは一方の接続パイプ３ａと同様の材質からなる他方の接続パイプ３ｃとの間にあってそれぞれ接続パイプ３ａ、３ｃの端部を上記変形部３ｂの内側に嵌め込んで、その嵌め込み箇所は紐３ｄ等で締め付けしている。
【０００４】
そして、上記接着剤受け部材３は、図５（ａ）及び図６（ｂ）に示すようにコンクリート床版１の下面１ａと鋼板２とからなる隙間Ａから流出する接着剤を受け入れ可能に取り付けられる。しかるのち図５（ｂ）に示すように鋼板２の接着剤注入孔４の一つ一つから樹脂注入器具により順次接着剤を注入する。接着剤が注入されると隙間Ａ内の空気はその分だけ隙間Ａに取り付けた接着剤受け部材３の一方の接続パイプ３ａの端部より排出される。空気が排出された後、該隙間Ａにに接着剤が充填されるに従い接着剤は、注入圧により該隙間Ａを経て接着剤受け部材３に受け入れられる。このとき接着剤受け部材３の他方の接続パイプ３ｃの端部を図６（ｂ）に示すように栓３ｅを加締めることにより閉塞すると、変形部３ｂは接着剤の圧力により内部の容積を大きくするように膨張し、上記隙間Ａから流出した接着剤もさらに受け入れる。しかるのち樹脂注入器具による接着剤の注入を止め、当該接着剤注入孔４をシールし、つぎの接着剤注入孔４に移行する。そして、膨張した変形部３ｂは、今度はもとに戻ろうとする復元力が働き接着剤を隙間Ａ方向に押圧する。
【０００５】
一方、鋼板接着施工後に於いて、前記コンクリート床版１には常に輪荷重や外力等が加わり、かつ、経年を経て疲労し前記鋼板２が、図５（ａ）の一点鎖線Ｂで示すように湾曲し、コンクリート床版１の下面１ａから鋼板２が剥離し、いわゆる浮き現象が発生する。かかる場合、その鋼板２の浮き部分に穴を開けて、例えば低圧樹脂注入器具等により接着樹脂を注入して、補修の工事を行なうものであった。
因みに、鋼板２の浮き部分の間隔は、極めて薄く例えば０．１〜０．８（ｍｍ）であって、前記低圧樹脂注入器具により約３４０（ｋＰａ）程度の注入圧力で５００（ｍＰａ・Ｓ）のような低粘度の樹脂でもって長時間をかけて注入される。
【０００６】
【発明が解決しようとする課題】
従来の技術は叙上した構成であるので次の課題が存在した。
すなわち、従来の技術によれば、コンクリート床版１の下面１ａに鋼板２を接着固定するためには、隙間Ａに樹脂注入器具（図示せず）で接着剤を注入すること、及び接着剤の注入作業に基づき、該隙間Ａから流出する接着剤を隙間Ａ内に押し込む為の接着剤受け部材３を必要としなければならないので施工工事の複雑化に加え、鋼板２の接着作業工数が大幅に増大すると共に、その設備機器やその部品等の増大化及び費用が嵩むという問題点があった。
また、上記鋼板２の接着作業とは別にコンクリート床版１の下面１ａと鋼板２を別異のホールインアンカー５を多数個を用意して、鋼板２の下面からホールインアンカー５の設置数に応じた穿孔を設けて打込む必要があり、コンクリート床版１へ固定する作業が余分に加わるうえに、鋼板２の下面に形成された多数の上記穿孔により該コンクリート床版１の耐力が脆弱化するという問題点があった。
【０００７】
また、一方、鋼板接着施工完了経年後に於いて、コンクリート床版１や鋼板２に加わる輪荷重、又は外力等により鋼板２にいわゆる浮き現象が発生し、これを防止すべく低圧樹脂注入器具の如き橋梁補修器具が必要となるばかりか、注入圧が高く設定された場合、該低圧樹脂注入器の上記浮き部分への接着剤注入作業に基づき、上記浮き部分の更なる拡大現象が誘起されると共にそのための接着剤再注入作業が要請されるという問題点があった。
加えて、上記のように注入圧が高い場合、当該低圧樹脂注入器具自体が損傷を惹起し、この補修が必要となる等種々の問題点があった。
【０００８】
【課題を解決するための手段】
本発明は、機械式アンカー自体に接着剤注入機能を付加し新規に橋梁施工をする際には、別異のアンカーを必要とせず、コンクリート床版やその他コンクリート構造物の下面に鋼板を固定作業及び接着作業を同時に行い、橋梁施工に伴う全作業工数の低減を図り設備機器又は部品点数を削減すること及び補修工事も適切かつ迅速に行なうことを目的としたものであって、次の構成、手段から成立する。
【０００９】
請求項１記載の発明によれば、一方側にくさび部及び他方側に雄ねじを周設したボルト部を形成したくさび状ボルトと、該くさび状ボルトの外回りに位置する所望長さのスリットを長さ方向に所望数個を形成した外筒体とでなる機械式アンカーに於いて、前記くさび状ボルトの長さ方向に貫通した第１接着剤流通孔と、該くさび状ボルトの長さ方向略中間位置であって、前記第１接着剤流通孔と連通し、かつ該くさび状ボルトの長さ方向に対して略直角方向に所望数個貫通した第２接着剤流通孔と、前記くさび部の上端部中心から外周面まで前記第１接着剤流通孔と連通した所望数の深さの切溝でなる第３接着剤流通孔とを有したことを特徴とする接着剤注入用機械式アンカーである。
【００１０】
請求項２記載の発明によれば、前記第３接着剤流通孔はくさび状ボルト軸を互いに９０°の間隔にて横断する４つの放射状切溝で構成したことを特徴とする請求項１記載の接着剤注入用機械式アンカーである。
【００１１】
請求項３記載の発明によれば、先端を鋭角に形成した棒状の打込みピンと、該打込みピンの外回りに位置すると共に一方側に所望長さのスリットを長さ方向に所望数個を横断貫通形成しかつ他方側に雄ねじを周設したボルトとでなる機械式アンカーに於いて、前記他方側端から少くとも前記スリットの位置までの深さであって、該ボルトの長さ方向に先端部が鋭角を形成して該スリットに連通した第１打込みピン挿入兼接着剤流通孔を穿設すると共に前記ボルトの長さ方向の所望位置であって、前記打込みピン挿入兼接着剤流通孔と連通しかつ該ボルトの長さ方向に対して略直角方向に所望数個の第２接着剤流通孔を貫通形成したことを特徴とする接着剤注入用機械式アンカーである。
【００１２】
請求項４記載の発明によれば、前記スリットはボルト軸を互に９０°の間隔にて横断する４つの貫通溝で構成したことを特徴とする請求項３記載の接着剤注入用機械式アンカーである。
【００１３】
請求項５記載の発明によれば、コンクリートと、一方側にくさび部及び他方側に雄ねじを周設したボルト部を形成したくさび状ボルトと、該くさび状ボルトの外回りに位置する所望長さのスリットを長さ方向に所望数個を形成した外筒体とでなる機械式アンカーに於いて、前記くさび状ボルトの長さ方向に貫通した第１接着剤流通孔と、該くさび状ボルトの長さ方向略中間位置であって、前記第１接着剤流通孔と連通し、かつ該くさび状ボルトの長さ方向に対して略直角方向に所望数個貫通した第２接着剤流通孔と、前記ボルト部の上端部中心から外周面まで前記第１接着剤流通孔と連通した所望数の深さの切溝でなる第３接着剤流通孔とを有した接着剤注入用機械式アンカーでなり、前記くさび状ボルトを挿入しかつ前記コンクリートの下面に接着剤注入隙間を形成して配置した鋼板と、該鋼板の下面から前記くさび状ボルトを螺合するナットとで構成されたことを特徴とするコンクリート構造物の鋼板接着装置である。
【００１４】
請求項６記載の発明によれば、コンクリートと、先端を鋭角に形成した棒状の打込みピンと、該打込みピンの外回りに位置すると共に一方側に所望長さのスリットを長さ方向に所望数個を横断貫通形成しかつ他方側に雄ねじを周設したボルトとでなる機械式アンカーに於いて、前記他方側端から少くとも前記スリットの位置までの深さであって、該ボルトの長さ方向に先端部が鋭角を形成して該スリットに連通した第１打込みピン挿入兼接着剤流通孔を穿設すると共に前記ボルトの長さ方向の所望位置であって、前記打込みピン挿入兼接着剤流通孔と連通しかつ該ボルトの長さ方向に対して略直角方向に所望数個の第２接着剤流通孔を貫通形成した接着剤注入用機械式アンカーでなり、前記ボルトを挿入しかつ前記コンクリートの下面に接着剤注入隙間を形成して配置した鋼板と、該鋼板の下面から前記ボルトの雄ねじと螺合するナットとで構成されたことを特徴とするコンクリート構造物の鋼板接着装置である。
【００１５】
【発明の実施の形態】
本発明に係る接着剤注入用機械式アンカー及びコンクリート構造物の鋼板接着装置の実施の形態について、添付図面を参照しながら詳細に説明する。
【００１６】
【発明の実施の形態１】
本発明に係る接着剤注入用機械式アンカーＣの実施の形態１について、図１及び図２（ａ）（ｂ）（ｃ）に基づき説明する。
【００１７】
図１は本発明に係る接着剤注入用機械式アンカーＣの実施の形態１に於けるくさび状ボルトと、該くさび状ボルトの外回りに組付ける外筒体とを示してあって、その要部を切欠した側面図である。
【００１８】
図２は図１に示す接着剤注入用機械式アンカーＣの各部品図であって、（ａ）はくさび状ボルトの側面図、（ｂ）は（ａ）の矢視Ｄ−Ｄ線方向から見た拡大上面図、（ｃ）は、該くさび状ボルトの外回りに組付ける外筒体を示す側面図である。
６は、炭素鋼（ＳＣＭ）又はその他の鋼材料等で構成されるくさび状ボルトであって、例えば、概ね略円柱体や角柱体等の形状でなっており、その長さ方向中心部から一方側にくさび部６ａを形成すると共に、他方側にボルト部６ｂを形成してなる。前記くさび部６ａは上端部６ｃから基端部６ｄにかけて外周面をくさび状の斜面を一連に形成している。つまり、上端部６ｃは長径となり、基端部６ｄは短径となっている。
【００１９】
前記くさび状ボルト６は長さ方向の中心部から他方側にボルト部６ｂを形成してあって、該ボルト部６ｂは前記くさび部６ａの基端部６ｄと一連に一体形成されており、外周面に雄ねじ６ｅを周設している。そして、該くさび部６ａと該ボルト部６ｂは、図２（ａ）に示すように、同一比率すなわち略同一寸法に設定されているが、後述するコンクリート床版等コンクリート構造物に加わる荷重や外力等及びその下面に装着する鋼板の厚さや種類等に応じて寸法差を設け、適宜の長さに設計することができる。
【００２０】
また、上記くさび状ボルト６は、図２（ａ）（ｂ）に示すように注入した接着剤を流過させる第１接着剤流通孔６ｆを断面略中央であってその長さ方向つまり、ボルト部６ｂの先端６ｉからくさび部６ａの上端部６ｃまで貫通させている。そして、上記くさび状ボルト６の長さ方向の中間位置であってくさび部６ａ又はボルト部６ｂの適宜位置に於いて、該くさび状ボルト６の長さ方向に対して、略直角方向に直交させかつ貫通させると共に、前記第１接着剤流通孔６ｆに連通させた第２接着剤流通孔６ｇを単一又は複数個配設している。
尚、第２接着剤流通孔６ｇはくさび状ボルト６の外周上に等間隔で所望数個配設し、該くさび状ボルト６の引張強度の低下を引き起させないためにボルト長さ方向に若干ずらして穿設することが望ましい。
【００２１】
さらに、前記くさび部６ａの上端部６ｃは図２（ａ）（ｂ）に示すように上端部６ｃ面から適宜深さＥを有してあって、該くさび部６ａの上端部６ｃの中心から外周面まで図２（ｂ）に示すように切溝でなる第３接着剤流通孔６ｈを形成している。該第３接着剤流通孔６ｈは前記第１接着剤流通孔６ｆに連通しており、上端部６ｃの外周面に向って放射状に貫通形成している。
【００２２】
尚、図２（ｂ）に示す上記第３接着剤流通孔６ｈの実施例に於いては、上端部６ｃの中心から４個配設しているが、本発明はこれに限定されず、単一又は複数個であってもよい。また、切溝としての第３接着剤流通孔６ｈの断面形状は、図２（ａ）（ｂ）に示すような略矩形に限定されず、略半円形又は略円形としても差支えないものであり、流入された接着剤が第１接着剤流通孔６ｆを経由して流通可能な形状であればよい。
【００２３】
次に、上記くさび状ボルト６の外回りに組付ける外筒体について説明する。
７は、外筒体であって、上記くさび状ボルト６と同材質の金属又は炭素鋼（ＳＣＭ）等の鋼材料で成形されてなり、上記くさび状ボルト６の形状に適合させる構造をしている。すなわち、該外筒体７の形状は該くさび状ボルトが円柱体に形成してあれば、円筒体とし、また角柱体に形成してあれば、角筒体となる。而して、該外筒体７の内部は長さ方向に貫通孔７ａを形成している。
【００２４】
該外筒体７の一方側は長さ方向略中心部から先端まで、図２（ｃ）に示すように所望数のスリット７ｂ、７ｂを形成している。該スリット７ｂは実施例としては４個を形成しているが、本発明はこれに限定されず、互に対向した位置に２個を形成してもよい。そして、該スリット７ｂ、７ｂ、７ｂ、７ｂは、外筒体７の断面略中央に形成した上記貫通孔７ａに連通している。従って、当該外筒体７を上記くさび状ボルト６に挿入し、該くさび部６ａに押込んだ際、上記スリット７ｂ、７ｂ、７ｂ、７ｂの相互間で形成されかつ外筒体７の一部を構成する可動止め片７ｃ、７ｃ、７ｃ、７ｃが、図２（ｃ）の仮想線で示すように拡開されながら、該外筒体７は上記くさび状ボルト６に固定される。
【００２５】
上記本発明に係る接着剤注入用機械式アンカーＣの実施の形態１の組立手順及び作用や該接着剤注入用機械式アンカーＣを使用したコンクリート構造物の鋼板接着装置等について説明する。
【００２６】
先づ、図３に示すように、上記接着剤注入用機械式アンカーＣを収容する収容孔９を桁、梁、橋脚、コンクリート床版、壁又は床スラブ等でなる該コンクリート構造物８の所定部位に穿設する。この場合、該収容孔９はドリル等を使用して適宜の径及び深さを有して穿孔される。また上記収容孔９内に滞留した切削粉をブロワーや集塵機で収集し、外部に排除する。そして上記くさび状ボルト６を該収容孔９内に挿入配置した後、上記外筒体７を該くさび状ボルト６のボルト部６ｂからから挿入した後、例えば、ハンマー等で該外筒体７の端部７ｄを打込む。而して、該外筒体７の可動止め片７ｃ、７ｃ、７ｃ、７ｃが図３に示すようにくさび部６ａの斜面６ｊにより拡開されつつその端部７ｅが収容孔９の内壁面９ａと接合する。かくして、接着剤注入用機械式アンカーＣがコンクリート構造物８内に固定される。この場合、上記収容孔９の径は上記接着剤注入用機械式アンカーＣを打設するため及び接着剤の流通経路を確保するために外筒体７の幅より、例えば２〜３（ｍｍ）程度幅広に設定している。
【００２７】
そして、前記コンクリート構造物８、例えば、コンクリート床版の下面８ａに鋼板１０を例えば５（ｍｍ）の間隙１１を有してスペーサ（図示せず）を介して配置している。
該鋼板１０は、ボルト挿入孔１０ａを穿設しており、このボルト挿入孔１０ａに前記くさび状ボルト６のボルト部６ｂを挿入すると共に平ワッシャ１２及びバネ座１３を該鋼板１０の下面１０ｂに挿入する。そして、ナット１４をボルト部６から螺合する。而して、上記接着剤注入用機械式アンカーＣは、コンクリート構造物８及び鋼板１０に固着されることとなる。
【００２８】
ここに於いて、例えば、グリース状ポリエステル樹脂や低揺変性エポキシ樹脂又は中性化抑制用樹脂等の流動体でなる接着剤を図３に示す矢印Ｆ方向から各種の樹脂注入器で注入する。而して、注入された接着剤はくさび状ボルト６に形成された前記第１接着剤流通孔６ｆを流過し、前記第２接着剤流通孔６ｇを経由して、その噴出口又は開口部から流出し、該くさび状ボルト部６の表面を伝わり又は上記スリット７ｂの隙間を通って流下する。そして当該接着剤が矢印Ｇ方向に流過すると共に間隙１１に流れ込む。上記第２接着剤流通孔６ｇが複数個を該くさび状ボルト部６に配設してあればそれぞれ同様な作用で接着剤は間隙１１に流れ込む。
【００２９】
一方、前記第１接着剤流通孔６ｆを流過した接着剤は前記第３接着剤流通孔６ｈ、つまり図２（ｂ）に示す４つの切溝に流れ、上記くさび状ボルト６の表面を伝わり、又は、上記スリット７ｂの隙間を通って流下する。そして、該接着剤が矢印Ｈ方向に流過すると共に間隙１１に流れ込む。さらに、接着剤は上記第３接着剤流通孔６ｈから前記外筒体７の表面や前記収容孔９の内壁面９ａに伝わり流下し、上記間隙１１に流れ込む。
かくして、接着剤は、コンクリート構造物８の下面８ａと鋼板１０で形成された間隙１１内に万遍なく行き渉り、該鋼板１０をコンクリート構造物８に接着固定する。
【００３０】
本発明は、上述のようにコンクリートと、上記接着剤注入用機械式アンカーＣと、鋼板１０及び緊締手段としてのナット１４とを組合せてコンクリート構造物の鋼板接着装置を構成する。
【００３１】
また、上述のように、本発明は該コンクリート構造物８の所望部位にドリル等の堀削器具により所望の径及び深さを有した収容孔９を切削する工程と、切削した後の収容孔９内に滞留する切削粉をブロワーや集塵機等で集塵する工程と、該収容孔９内にくさび部６ａ及びボルト部６ｂを形成しかつ第１ないし第３接着剤流通孔６ｆ〜６ｇを軸内及び外表面に穿設したくさび状ボルト６を挿入する工程と、所望長さのスリット７ｂを所望数形成しかつ該くさび状ボルト６の外回りに挿装した外筒体７をハンマー等打込み器具により上記スリット７ｂ間の可動止め片７ｃ、７ｃ、７ｃ、７ｃを開拡して上記収容孔９の内奥部に打込む工程と、上記くさび状ボルト６のボルト部６ｂを挿入しかつ上記コンクリート構造物８の下面に間隙１１を有してナット１４により鋼板１０を固定する工程と、上記くさび状ボルト６の第１ないし第３接着剤流通孔６ｆ〜６ｇ内に該接着剤を注入流過させかつ上記間隙１１に流れ込ませる接着剤注入工程とでなるコンクリート構造物の鋼板接着工法を提供する。
【００３２】
【発明の実施の形態２】
本発明に接着剤注入用機械式アンカーＩの実施の形態２について図４に基づき説明する。
【００３３】
図４は本発明に係る接着剤注入用機械式アンカーＩの実施の形態２に於ける打込みピンと、該打込みピンの外回りに組付ける穿設孔を有するボルトとを示してあって、（ａ）はボルトの要部を切欠した側面図である。（ｂ）は（ａ）の矢視Ｊ−Ｊ方向の拡大平面図である。（ｃ）はボルトの穿設孔に打込まれる打込みピンの側面図である。
【００３４】
１５はボルトであって長さ方向中心部から一方側に所望長さのスリット１５ｂ及び他方側に雄ねじ１５ｄを周設してなる。該ボルト１５は上記実施の形態１に示すくさび状ボルト６と同材質の金属又は炭素鋼（ＳＣＭ）等の鋼材料で成形されている。該ボルト１５の形状は後述する棒状の打込みピンが円柱体に形成してあれば、円筒体とし、また角柱体に形成してあれば、角筒体となる。而して、該ボルト１５の内部は下端から長さ方向に穿設孔すなわち、第１打込みピン挿入兼接着剤流通孔１５ａを形成している。
【００３５】
該ボルト１５の一方側は先端から長さ方向略中間部まで、図４（ａ）に示すように所望数のスリット１５ｂ、１５ｂを形成している。該スリット１５ｂは図４（ｂ）に示すように実施例としては４個を形成しているが、本発明はこれに限定されず、互に対向した位置に２個を形成してもよい。そして、該スリット１５ｂ、１５ｂ、１５ｂ、１５ｂは、ボルト１５の断面略中央に形成した上記第１打込みピン挿入兼接着剤流通孔１５ａに連通すると共にボルト１５を横断して形成している。従って、当該ボルト１５に後記する棒状の打込みピン１６を挿入し、上記スリット１５ｂ、１５ｂ、１５ｂ、１５ｂの相互間で形成された可動肉厚部１５ｃ、１５ｃ、１５ｃ、１５ｃが、図４（ｂ）の仮想線Ｋで示すように拡開されながら、後述する該棒状打込みピンは上記ボルト１５内に固定される。
【００３６】
上記ボルト１５の長さ方向に形成された第１打込みピン挿入兼接着剤流通孔１５ａの先端部１５ｅは例えば互いに傾面を形成し、その頂点部を鋭角に形成する構造となっている。そして、上記ボルト１５の長さ方向の所定位置には単一又は複数であって、前記第１打込みピン挿入兼接着剤流通孔１５ａと連通しかつ該ボルト１５の長さ方向に対して略直角方向に第２接着剤流通孔１５ｆを穿設している。このように構成したので、接着剤をボルト１５の下端１５ｇから注入した際、該接着剤は上記第１打込みピン挿入兼接着剤流通孔１５ａから上記第２接着剤流通孔１５ｆ及びスリット１５ｂを介して該ボルト１５の上部外周面から下部外周面に流下し、前記接着剤注入用機械式アンカーＩを収容している収容孔９に万遍なく流過する。
【００３７】
１６は、上記ボルト１５と同材質例えば炭素鋼（ＳＣＭ）又はその他の鋼材料等で構成される棒状の打込みピンである。該打込みピン１６は上記ボルト１５内に穿設した第１打込みピン挿入兼接着剤流通孔１５ａの径は打込みピン１６を挿入後、接着剤の注入を行うために、接着剤の流通路を確保し、打込みピン１６より例えば、１（ｍｍ）程度大きくしている。そして、断面形状は概ね同一にしており、望ましくは略円形又は角形に構成する。そして、該打込みピン１６の先端１６ａは鋭角に形成してあり、該打込みピン１６を第１打込みピン挿入兼接着剤流通孔１５ａに挿入しかつ打込んだ際、この先端１６ａが上記ボルトのスリット１５ｂが形成したスリット略中心間隙１５ｈに容易に押込まれる構成としている。また、上記打込みピン１６はいわゆる汎用の釘で構成してもよく、その頭部１６ｂは打込みピン１６を挿入後、接着剤を注入するために接着剤注入の障害とならないように打込みピン１６の径と略同一以下とする。又はその断面形状を円形としても良い。
【００３８】
次に、上記本発明に係る接着剤注入用機械式アンカーＩの実施の形態２の組立手順及び作用や該接着剤注入用機械式アンカーＩを使用したコンクリート構造物鋼板接着装置等について説明する。
尚、組立手順や作用が上記実施の形態１と略同一であるので図示していない。
【００３９】
前述した本発明に係る実施の形態１の組立手順等と略同一であり、上記接着剤注入用機械式アンカーＣの場合と同様に機械式アンカーＩを収容する収容孔９を桁、梁、橋脚、コンクリート床版、壁又は床スラブ等でなる該コンクリート構造物８の所定部位に穿設する。この場合、該収容孔９はドリル等を使用して適宜の径及び深さを有して堀削される。また上記収容孔９内に滞留した切削粉をブロワーや集塵機で収集し、外部に排除する。そしてボルト１５を該収容孔９内に挿入配置した後、上記打込みピン１６を該ボルト１５の雄ねじ１５ｄの下端１５ｇから挿入した後、例えば、ハンマー等で該打込みピン１６の頭部１６ｂを打込む。而して、該ボルト１５のスリット１５ｂ、１５ｂ、１５ｂ、１５ｂ相互間の可動肉厚部１５ｃ、１５ｃ、１５ｃ、１５ｃが図４（ｂ）の仮想線Ｋに示すように第１打込みピン挿入兼接着剤流通孔１５ａの先端部１５ｅの斜面により拡開されつつその可動肉厚部の端部が収容孔９の内壁面９ａと接合する。かくして、接着剤注入用機械式アンカーＩがコンクリート構造物８内に固定される。この場合、上記収容孔９の幅は上記接着剤注入用機械式アンカーＩを打設するため及び接着剤の流通経路を確保するためにボルト１５の幅より、例えば２〜３（ｍｍ）程度幅広に設定している。
【００４０】
そして、前記コンクリート構造物８、例えば、コンクリート床版の下面８ａに鋼板１０を例えば５（ｍｍ）の間隙１１を有してスペーサ（図示せず）を介して配置している。
該鋼板１０は、ボルト挿入孔１０ａを穿設しており、このボルト挿入孔１０ａに前記ボルト１５を挿入すると共に雄ねじ１５ｄを通し平ワッシャ１２及びバネ座１３を該鋼板１０の下面１０ｂの位置に設置する。そして、ナット１４をボルト部６から螺合する。而して、上記接着剤注入用機械式アンカーＩは、コンクリート構造物８及び鋼板１０に固着されることとなる。
尚、上記平ワッシャ１２及びバネ座１３は必ずしも設置する必要がなく省略してもよい。
【００４１】
ここに於いて、例えば、グリース状ポリエステル樹脂や低揺変性エポキシ樹脂又は中性化抑制用樹脂等の流動体でなる前述した接着剤を図４（ａ）に示す矢印Ｌ方向から各種の樹脂注入器で注入する。而して、注入された接着剤はボルト１５に形成された前記第１打込みピン挿入兼接着剤流通孔１５ａを流過し、前記第２接着剤流通孔１５ｆを経由して、その噴出口又は開口部から流出し、該ボルト１５の表面を伝わり又は上記スリット１５ｂ、１５ｂ、１５ｂ、１５ｂ及びスリット略中心隙間１５ｈを通って流下する。そして当該接着剤がボルト１５の下部方向に流過すると共に間隙１１に流れ込む。上記第２接着剤流通孔１５ｆが複数個を該ボルト１５に配設してあればそれぞれ同様な作用で接着剤は間隙１１に流れ込む。
かくして、接着剤は、コンクリート構造物８の下面８ａと鋼板１０で形成された間隙１１内に万遍なく行き渉り、該鋼板１０をコンクリート構造物８に接着固定する。
【００４２】
本発明は、上述のようにコンクリートと、上記接着剤注入用機械式アンカーＩと、鋼板１０及び緊締手段としてのナット１４とを組合せてコンクリート構造物の鋼板接着装置を構成する。
【００４３】
また、上述のように、本発明はコンクリート等やコンクリート床版、壁等でなるコンクリート構造物８の所望部位にドリル等の堀削器具により所望の径及び深さを有した収容孔９を切削する工程と、切削した後の収容孔９内に滞留する切削粉をブロワーや集塵機等で集塵する工程と、該収容孔９内に第１打込みピン挿入兼接着剤流通孔１５ａ、及びそれと略直角方向に連通しする第２接着剤流通孔１５ｆを軸内及び上方部に所望長さのスリット１５ｂ、１５ｂ、１５ｂ、１５ｂを所望数形成したボルト１５を挿入する工程と、該ボルト１５の穿孔すなわち第１打込みピン挿入兼接着剤流通孔１５ａ内に打込みピン１６をハンマー等打込み器具により上記スリット１５ｂ、１５ｂ、１５ｂ、１５ｂ間の可動肉厚部１５ｃ、１５ｃ、１５ｃ、１５ｃを開拡して上記第１打込みピン挿入兼接着剤流通孔１５ａの内奥部に打込む工程と、上記コンクリート構造物８の下面に間隙１１を有してナット１４により鋼板１０を固定する工程と、上記ボルト１５の第１ないし第２接着剤流通孔１５ａ、１５ｆ内に該接着剤を注入流過させかつ上記間隙１１に流れ込ませる接着剤注入工程とでなるコンクリート構造物の鋼板接着工法を提供する。
【００４４】
前述した本発明に係るコンクリート構造物の鋼板接着装置は、橋梁橋や桁又はコンクリート壁各種のコンクリート構造物を構築する際に上記組立手順や工法により構成されることを説明したが、本発明はこれに限定されない、すなわち、上述した本発明に係るコンクリート構造物が経年変化した際及び特に道路上に常に輪荷重やその他外力がかかることにより、コンクリート構造物８の下面８ａに設置した鋼板１０が撓みそして該コンクリート構造物８の下面８ａから該鋼板１０が剥離する。これが鋼板１０のいわゆる浮き現象である。この浮き現象に対処すべくコンクリート構造物の鋼板補修工事として本発明を適用する。この場合、浮き部分の鋼板及びコンクリート構造物８の下面８ａに穿孔する。そして、この浮き現象部分に於ける鋼板１０に固定した上記接着剤注入用機械式アンカーＣ又はＩのくさび状ボルト部６又はボルト１５から接着剤を注入することにより簡易かつ迅速に作業工数を削減して上記間隙１１内に該接着剤を流し込み鋼板１０をコンクリート構造物８の下面に密着固定することができる。
【００４５】
【発明の効果】
本発明に係る接着剤注入用機械式アンカー及びコンクリート構造物の鋼板接着装置は叙上した構成、作用または工法を有するので次の効果がある。
【００４６】
請求項１記載の発明によれば、一方側にくさび部及び他方側に雄ねじを周設したボルト部を形成したくさび状ボルトと、該くさび状ボルトの外回りに位置する所望長さのスリットを長さ方向に所望数個を形成した外筒体とでなる機械式アンカーに於いて、前記くさび状ボルトの長さ方向に貫通した第１接着剤流通孔と、該くさび状ボルトの長さ方向略中間位置であって、前記第１接着剤流通孔と連通し、かつ該くさび状ボルトの長さ方向に対して略直角方向に所望数個貫通した第２接着剤流通孔と、前記ボルト部の上端部中心から外周面まで前記第１接着剤流通孔と連通した所望数の深さの切溝でなる第３接着剤流通孔とを有したことを特徴とする接着剤注入用機械式アンカーを提供する。
このような構成としたので、当該単一の機械式アンカーにアンカーの機械的機能及び接着剤注入機能を併有させたので安定した補強効果を付与し、別異の樹脂注入器具や接着剤受け部材を不要とするばかりか接着剤注入作業工数や鋼板の接着作業工数を大幅に削減できると共に鋼板接着に係る機器や部品を低減し鋼板補修工事等の作業効率を向上させる効果がある。
【００４７】
また、上記鋼板には別のアンカーボルトを装着するための穿孔や接着剤注入用の孔を設ける必要がなく接着剤注入用機械式アンカーを装着する孔を設ければよく、コンクリート床版が脆弱化することなく穿孔作業が大幅に少なくなるという効果がある。
【００４８】
また、上記機械式アンカーのくさび状ボルトの長さ方向及びそれと略直方向に第１ないし第３接着剤流通孔を配設したのでコンクリート構造物と鋼板間及びコンクリート構造物内の収容孔に接着剤が効率良く流通し、更に上記機械式アンカーの底部及びアンカー側部に設けた接着剤流通孔の噴出口から上記コンクリート構造物と鋼板とに形成した隙間に該接着剤が充填され両者を密着固定し、コンクリート構造物の補強効果を格段に向上させる効果がある。
【００４９】
請求項２記載の発明によれば、前記第３接着剤流通孔はくさび状ボルト軸を互いに９０°の間隔にて横断する４つの放射状切溝で構成したことを特徴とする請求項１記載の接着剤注入用機械式アンカーを提供する。
このような構成としたので、当該機械式アンカーから注入された接着剤が第１から第３接着剤流通孔に流過し、特に、くさび部の頂部から外周に該接着剤が放射状に流過され、更に、くさび部の下方に外周面を伝わって、コンクリート構造物と鋼板との隙間に接着剤を万遍なく充填させ、かつ流通するので鋼板の接着効率及び作業効率を大幅に向上させる効果がある。
【００５０】
請求項３記載の発明によれば、先端を鋭角に形成した棒状の打込みピンと、該打込みピンの外回りに位置すると共に一方側に所望長さのスリットを長さ方向に所望数個を横断貫通形成しかつ他方側に雄ねじを周設したボルトとでなる機械式アンカーに於いて、前記他方側端から少くとも前記スリットの位置までの深さであって、該ボルトの長さ方向に先端部が鋭角を形成して該スリットに連通した第１打込みピン挿入兼接着剤流通孔を穿設すると共に前記ボルトの長さ方向の所望位置であって、前記打込みピン挿入兼接着剤流通孔と連通しかつ該ボルトの長さ方向に対して略直角方向に所望数個の第２接着剤流通孔を貫通形成したことを特徴とする接着剤注入用機械式アンカーを提供する。
このような構成としたので、上記請求項１記載の発明の効果に加えて、当該機械式アンカーは棒状の打込みピンによるボルト及びコンクリート構造物への打込み作業が極めて簡単となり、簡易かつ迅速にコンクリート構造物へ装着できる効果がある。
【００５１】
請求項４記載の発明によれば、前記スリットはボルト軸を互に９０°の間隔にて横断する４つの貫通溝で構成したことを特徴とする請求項３記載の接着剤注入用機械式アンカーを提供する。
このような構成としたので、請求項３記載の発明の効果に加えて、当該機械式アンカーから注入された接着剤が第１打込みピン挿入兼接着剤流通孔に流過し、特にボルトに周設したスリットからボルト外周に接着剤が放射状に流過され、更に、ボルトの下方に外周面を伝わってコンクリート構造物と鋼板との隙間に接着剤を万遍なく充填させ、かつ流通するので鋼板の接着効率及び作業効率を大幅に向上させる効果がある。
【００５２】
請求項５記載の発明によれば、コンクリートと、一方側にくさび部及び他方側に雄ねじを周設したボルト部を形成したくさび状ボルトと、該くさび状ボルトの外回りに位置する所望長さのスリットを長さ方向に所望数個を形成した外筒体とでなる機械式アンカーに於いて、前記くさび状ボルトの長さ方向に貫通した第１接着剤流通孔と、該くさび状ボルトの長さ方向略中間位置であって、前記第１接着剤流通孔と連通し、かつ該くさび状ボルトの長さ方向に対して略直角方向に所望数個貫通した第２接着剤流通孔と、前記ボルト部の上端部中心から外周面まで前記第１接着剤流通孔と連通した所望数の深さの切溝でなる第３接着剤流通孔とを有した接着剤注入用機械式アンカーでなり、前記くさび状ボルトを挿入しかつ前記コンクリートの下面に接着剤注入隙間を形成して配置した鋼板と、該鋼板の下面から前記くさび状ボルトを螺合するナットとで構成されたことを特徴とするコンクリート構造物の鋼板接着装置を提供する。
このような構成としたので、当該単一の機械式アンカーにアンカーの機械的機能及び接着剤注入機能を併有させたので安定した補強効果を付与し、別異の樹脂注入器具や接着剤受け部材を不要とするばかりか接着剤注入作業工数や鋼板の接着作業工数を大幅に削減できると共に鋼板接着に係る機器や部品を低減し鋼板補修工事等の作業効率を向上させるコンクリート構造物の鋼板接着装置や工法を提供する効果がある。
【００５３】
また、上記鋼板には接着剤注入用の孔を設ける必要がなく接着剤注入用機械式アンカーを装着する孔を設ければよく、コンクリート床版が脆弱化することなく穿孔作業が大幅に少なくしたコンクリート構造物の鋼板接着装置や工法を提供する効果がある。
【００５４】
また、上記機械式アンカーのくさび状ボルトの長さ方向及びそれと略直方向に第１ないし第３接着剤通孔を配設したのでコンクリート構造物と鋼板間及びコンクリート構造物内の収容孔に接着剤が効率良く流通し、更に上記機械式アンカーの底部及びアンカー側部に設けた接着剤流通孔噴出口から上記コンクリート構造物とに形成した隙間に該接着剤が充填され両者を密着固定し、コンクリート構造物の補強効果を格段に向上させたコンクリート構造物の鋼板接着装置や工法を提供する効果がある。また、本発明は各種のコンクリート構造物、例えば桁、梁や橋脚、コンクリート床版、壁又は床スラブ等に適用させることができ、その応用範囲を広げる効果がある。
【００５５】
請求項６記載の発明によれば、コンクリートと、先端を鋭角に形成した棒状の打込みピンと、該打込みピンの外回りに位置すると共に一方側に所望長さのスリットを長さ方向に所望数個を横断貫通形成しかつ他方側に雄ねじを周設したボルトとでなる機械式アンカーに於いて、前記他方側端から少くとも前記スリットの位置までの深さであって、該ボルトの長さ方向に先端部が鋭角を形成して該スリットに連通した第１打込みピン挿入兼接着剤流通孔を穿設すると共に前記ボルトの長さ方向の所望位置であって、前記打込みピン挿入兼接着剤流通孔と連通しかつ該ボルトの長さ方向に対して略直角方向に所望数個の第２接着剤流通孔を貫通形成した接着剤注入用機械式アンカーでなり、前記ボルトを挿入しかつ前記コンクリートの下面に接着剤注入隙間を形成して配置した鋼板と、該鋼板の下面から前記ボルトの雄ねじと螺合するナットとで構成されたことを特徴とするコンクリート構造物の鋼板接着装置を提供する。
このような構成としたので、上記請求項１記載の発明の効果に加えて、当該機械式アンカーは棒状の打込みピンによるボルト及びコンクリート構造物への打込み作業が極めて簡単となり、簡易かつ迅速にコンクリート構造物へ装着できるコンクリート構造物の鋼板設置装置や工法を提供する効果がある。また、本発明は各種のコンクリート構造物、例えば桁、梁や橋脚、コンクリート床版、壁又は床スラブ等に適用させることができ、その応用範囲を広げる効果がある。
【図面の簡単な説明】
【図１】本発明に係る接着剤注入用機械式アンカーの実施の形態１に於けるくさび状ボルトと、該くさび状ボルトの外回りに組付ける外筒体とを示してあって、その要部を切欠した側面図である。
【図２】図１に示す接着剤注入用機械式アンカーＣの各部品図であって、（ａ）はくさび状ボルトの側面図、（ｂ）は（ａ）の矢視Ｄ−Ｄ線方向から見た拡大上面図、（ｃ）は、該くさび状ボルトの外回りに組付ける外筒体を示す側面図である。
【図３】本発明に係る接着剤注入用機械式アンカーの実施の形態１に於ける組立状態及びコンクリート鋼板接着装置またはその工法を示す垂直断面図である。
【図４】本発明に係る接着剤注入用機械式アンカーの実施の形態２に於ける打込みピンと、該打込みピンの外回りに組付ける打込みピン挿入兼接着剤流通孔を有するボルトとを示してあって、（ａ）はボルトの要部を切欠した側面図、（ｂ）は（ａ）の矢視Ｊ−Ｊ方向の拡大平面図、（ｃ）はボルトの打込みピン挿入兼接着剤流通孔に打込まれる打込みピンの側面図である。
【図５】従来の技術に於けるコンクリート構造物に鋼板を接合した構成の一例を示すものであって（ａ）は垂直断面図、（ｂ）は鋼板の下面からみた（ａ）の底面図である。
【図６】従来の技術に於けるコンクリート構造物に鋼板を接合するために使用する接着剤受け部材を示すものであって、（ａ）は斜視図、（ｂ）は使用状態を示す一部切欠した垂直断面図である。
【符号の説明】
１コンクリート床版
１ａコンクリート床版の下面
２鋼板
３接着剤受け部材
３ａ一方の接続パイプ
３ｂ変形部
３ｃ他方の接続パイプ
３ｄ紐
３ｅ栓
４接着剤注入孔
５ホールインアンカー
６くさび状ボルト
６ａくさび状ボルトのくさび部
６ｂくさび状ボルトのボルト部
６ｃくさび部の上端部
６ｄくさび部の基端部
６ｅボルト部の雄ねじ
６ｆ第１接着剤流通孔
６ｇ第２接着剤流通孔
６ｈ第３接着剤流通孔（切溝）
７外筒体
７ａ外筒体の貫通孔
７ｂ外筒体のスリット
７ｃ外筒体の可動止め片
７ｄ外筒体の端部
７ｅくさび部の端部
８コンクリート構造物
８ａコンクリート構造物の下面
９収容孔
９ａ収容孔の内壁面
１０鋼板
１０ａボルト挿入孔
１０ｂ鋼板の下面
１１間隙
１２平ワッシャ
１３バネ座
１４ナット
１５ボルト
１５ａ第１打込みピン兼接着剤流通孔
１５ｂボルトのスリット
１５ｃボルトの可動肉厚部
１５ｄボルトの雄ねじ
１５ｅ第１打込みピン兼接着剤流通孔の先端部
１５ｆ第２接着剤流通孔
１５ｇボルトの下端
１５ｈスリット略中心間隙
１６打込みピン
１６ａ打込みピンの先端
１６ｂ打込みピンの頭部
Ａ隙間
Ｃ実施の形態１の接着剤注入用機械式アンカー
Ｅ第３接着剤流通孔の深さ
Ｆ接着剤の注入方向
Ｇ接着剤の流れ
Ｈ接着剤の流れ
Ｉ実施の形態２の接着剤注入用機械式アンカー
Ｌ接着剤の注入方向[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mechanical anchor for injecting an adhesive and a device for bonding a steel plate to a concrete structure, which are used when bonding and reinforcing a steel plate to a concrete frame or a concrete structure such as a floor slab.
[0002]
[Prior art]
Conventionally, a technique for joining a steel plate or the like to a concrete structure of this type and a receiving member such as an adhesive used for the technique are shown in FIGS. 5A and 5B and FIGS. 6A and 6B as examples. There is one disclosed in Japanese Patent Publication No. 59-23584.
Explaining this, when the steel plate 2 is joined to the lower surface 1a of the concrete floor slab 1 of the bridge, the adhesive receiving member 3 shown in FIG. Reference numeral 4 denotes an adhesive injection hole for injecting an adhesive by a separately provided resin injection device (not shown). Reference numeral 5 denotes a hole-in anchor for attaching the steel plate 2 to the surface 1a of the lower floor slab 1. The periphery of the steel plate 2 is sealed by a sealing member so that the adhesive does not flow out.
[0003]
FIG. 6A shows an example of the adhesive receiving member 3, which is composed of one connecting pipe 3a, a deformed portion 3b, and the other connecting pipe 3c. The other and the other connecting pipes 3a and 3c are made of metal or plastic, and the deformed portion 3b expands itself to increase the internal volume when pressure is applied by the outflow pressure of the outflowing adhesive. It has a pipe shape made of an elastic material such as rubber.
The rubber pipe as the deformed portion 3b is located between the one connected pipe 3a and the other connected pipe 3c made of the same material, and the ends of the connected pipes 3a and 3c are fitted into the deformed portion 3b, respectively. The fitting portion is fastened with a string 3d or the like.
[0004]
Then, the adhesive receiving member 3 is attached so as to receive the adhesive flowing out from the gap A formed between the lower surface 1a of the concrete floor slab 1 and the steel plate 2 as shown in FIGS. 5 (a) and 6 (b). Can be Thereafter, as shown in FIG. 5B, the adhesive is sequentially injected from each of the adhesive injection holes 4 of the steel plate 2 by a resin injection device. When the adhesive is injected, the air in the gap A is discharged from the end of one connection pipe 3a of the adhesive receiving member 3 attached to the gap A by that amount. After the air is discharged, as the gap A is filled with the adhesive, the adhesive is received by the adhesive receiving member 3 through the gap A by the injection pressure. At this time, when the end of the other connection pipe 3c of the adhesive receiving member 3 is closed by caulking the stopper 3e as shown in FIG. 6B, the deformed portion 3b increases the internal volume by the pressure of the adhesive. The adhesive which has expanded so as to flow out from the gap A is also received. Thereafter, the injection of the adhesive by the resin injection device is stopped, the adhesive injection hole 4 is sealed, and the process proceeds to the next adhesive injection hole 4. Then, the expanded deformed portion 3b exerts a restoring force to return to the original state, and presses the adhesive in the gap A direction.
[0005]
On the other hand, after the steel plate bonding work, the concrete floor slab 1 is always subjected to wheel load, external force, and the like, and is fatigued over time, so that the steel plate 2 becomes as shown by the dashed line B in FIG. The steel plate 2 is bent and the steel plate 2 peels off from the lower surface 1a of the concrete floor slab 1, and a so-called floating phenomenon occurs. In such a case, repair work is performed by making a hole in the floating portion of the steel plate 2 and injecting an adhesive resin using, for example, a low-pressure resin injection device or the like.
Incidentally, the interval between the floating portions of the steel plate 2 is extremely thin, for example, 0.1 to 0.8 (mm), and is 500 (mPa · S) at an injection pressure of about 340 (kPa) by the low-pressure resin injection device. It is injected over a long period of time with a low-viscosity resin.
[0006]
[Problems to be solved by the invention]
Since the conventional technology has the configuration described above, the following problem exists.
That is, according to the prior art, in order to bond and fix the steel plate 2 to the lower surface 1a of the concrete floor slab 1, an adhesive is injected into the gap A with a resin injection device (not shown), and Based on the injection work, the adhesive receiving member 3 for pushing the adhesive flowing out of the gap A into the gap A must be required, which complicates the construction work and significantly reduces the number of man-hours for bonding the steel plate 2. With the increase, there is a problem that the equipment and components thereof are increased and the cost is increased.
Separately from the bonding operation of the steel plate 2, a plurality of different hole-in anchors 5 are prepared from the lower surface 1a of the concrete slab 1 and the steel plate 2, and the number of the hole-in anchors 5 is set from the lower surface of the steel plate 2. It is necessary to provide a corresponding perforation and drive the concrete floor slab 1 into place. In addition to the work of fixing the concrete slab 1, the strength of the concrete slab 1 is weakened by the large number of perforations formed on the lower surface of the steel plate 2. There was a problem of doing.
[0007]
On the other hand, after the completion of the bonding operation of the steel plate, a so-called floating phenomenon occurs in the steel plate 2 due to a wheel load applied to the concrete slab 1 or the steel plate 2 or an external force. In addition to the need for bridge repair equipment, when the injection pressure is set to a high value, a further expansion phenomenon of the floating portion is induced while the adhesive is injected into the floating portion of the low-pressure resin injector. There is a problem that an adhesive re-injection operation is required for that.
In addition, when the injection pressure is high as described above, the low-pressure resin injection device itself causes damage, and there are various problems such as the necessity of repair.
[0008]
[Means for Solving the Problems]
The present invention does not require a separate anchor when a new bridge is constructed by adding an adhesive injection function to the mechanical anchor itself, and works to fix steel plates to the lower surface of concrete slabs and other concrete structures It is intended to reduce the total number of work steps involved in bridge construction and reduce the number of equipment and parts and to perform repair work appropriately and promptly, and perform the following construction, It is established from the means.
[0009]
According to the first aspect of the present invention, a wedge-shaped bolt having a wedge part formed on one side and a bolt part having a male thread provided on the other side, and a slit having a desired length located on the outer periphery of the wedge-shaped bolt are provided. In a mechanical anchor comprising a desired number of outer cylinders formed in the width direction, a first adhesive flow hole penetrating in the length direction of the wedge-shaped bolt; An intermediate position, a second adhesive flow hole communicating with the first adhesive flow hole, and penetrating a desired number of the second adhesive flow hole in a direction substantially perpendicular to the length direction of the wedge-shaped bolt; A mechanical anchor for injecting an adhesive, comprising: a third adhesive flow hole having a desired number of cut grooves communicating with the first adhesive flow hole from the center of the upper end to the outer peripheral surface. is there.
[0010]
According to the second aspect of the present invention, the third adhesive flow hole is constituted by four radial incisions crossing the wedge-shaped bolt axis at an interval of 90 ° from each other. It is a mechanical anchor for injecting an adhesive.
[0011]
According to the third aspect of the present invention, a rod-shaped driving pin having a sharp end is formed, and a desired number of slits are formed on one side of the driving pin in the length direction so as to traverse the driving pin. A mechanical anchor comprising a bolt having a male screw provided on the other side, wherein the depth is from the other end to at least the position of the slit, and the tip of the bolt is in the length direction of the bolt. A first driving pin insertion / adhesive distribution hole formed at an acute angle and communicating with the slit is formed, and is communicated with the driving pin insertion / adhesion distribution hole at a desired position in the longitudinal direction of the bolt. A mechanical anchor for injecting an adhesive, wherein a desired number of the second adhesive flow holes are formed through the bolt in a direction substantially perpendicular to the length direction of the bolt.
[0012]
According to the invention as set forth in claim 4, the slit is constituted by four through-grooves which cross the bolt axis at an interval of 90 ° from each other, and the mechanical anchor for injecting an adhesive according to claim 3 is provided. It is.
[0013]
According to the invention as set forth in claim 5, wedge-shaped bolts having concrete, a wedge part formed on one side and a bolt part having a male thread provided on the other side, and a desired length located outside the wedge-shaped bolt are provided. In a mechanical anchor comprising an outer cylinder having a desired number of slits formed in the length direction, a first adhesive flow hole penetrating in the length direction of the wedge-shaped bolt; A second adhesive flow hole which is substantially at a middle position in the longitudinal direction, communicates with the first adhesive flow hole, and penetrates a desired number of the second adhesive flow hole in a direction substantially perpendicular to the length direction of the wedge-shaped bolt; A mechanical anchor for injecting an adhesive having a third adhesive flow hole formed of a desired number of cut grooves communicating with the first adhesive flow hole from the center of the upper end of the bolt portion to the outer peripheral surface, Insert the wedge bolts and under the concrete And the steel plate which is disposed to form an adhesive injection gap, a steel sheet bonding apparatus of the concrete structure, characterized in that it is composed of a nut screwed to the wedge bolts from the underside of the steel plate.
[0014]
According to the invention as set forth in claim 6, concrete, a rod-shaped driving pin having a sharp tip formed at an end thereof, and a desired number of slits each having a desired length in the length direction are disposed on the outer periphery of the driving pin and on one side. In a mechanical anchor comprising a bolt having a transverse penetration formed and a male screw provided on the other side, the depth is from the other end to at least the position of the slit, and is a lengthwise direction of the bolt. A first driving pin insertion / adhesive distribution hole is formed at an end of the first insertion pin and formed at an intended position in the length direction of the bolt. And a mechanical anchor for injecting an adhesive formed by penetrating a desired number of second adhesive flow holes in a direction substantially perpendicular to the length direction of the bolt. Glued to the bottom And the injection gap formed by the arranged steel, a steel sheet bonding apparatus of the concrete structure, characterized in that it is composed of a nut male screw and screwing the bolt from the lower surface of the steel plate.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a mechanical anchor for injecting an adhesive and a steel structure bonding apparatus for a concrete structure according to the present invention will be described in detail with reference to the accompanying drawings.
[0016]
Embodiment 1 of the present invention
First Embodiment A mechanical anchor C for injecting an adhesive according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2A, 2B, and 2C.
[0017]
FIG. 1 shows a wedge-shaped bolt and an outer cylindrical body to be assembled around the wedge-shaped bolt in a first embodiment of a mechanical anchor C for injecting an adhesive according to the present invention. It is the side view which notched.
[0018]
2A and 2B are each a part view of the mechanical anchor C for injecting an adhesive shown in FIG. 1, wherein FIG. 2A is a side view of a wedge-shaped bolt, and FIG. FIG. 4C is a side view showing an outer cylinder body to be assembled around the outer periphery of the wedge-shaped bolt.
Reference numeral 6 denotes a wedge-shaped bolt made of carbon steel (SCM) or another steel material, and has, for example, a substantially columnar shape or a prismatic shape. A wedge portion 6a is formed on one side and a bolt portion 6b is formed on the other side. The wedge portion 6a has a series of wedge-shaped slopes formed on the outer peripheral surface from the upper end portion 6c to the base end portion 6d. That is, the upper end 6c has a longer diameter, and the base end 6d has a shorter diameter.
[0019]
The wedge-shaped bolt 6 has a bolt portion 6b formed on the other side from the center in the longitudinal direction, and the bolt portion 6b is integrally formed with the base end portion 6d of the wedge portion 6a in a series. A male screw 6e is provided around the surface. As shown in FIG. 2A, the wedge portion 6a and the bolt portion 6b are set to have the same ratio, that is, substantially the same size, but a load or an external force applied to a concrete structure such as a concrete floor slab described later. Dimensional differences can be provided in accordance with the thickness and type of the steel plate to be mounted on the lower surface thereof and the like, and the steel plate can be designed to have an appropriate length.
[0020]
As shown in FIGS. 2A and 2B, the wedge-shaped bolt 6 has a first adhesive flow hole 6f through which the injected adhesive flows, which is located substantially at the center of the cross section, in the length direction thereof, that is, the bolt. It penetrates from the tip 6i of the portion 6b to the upper end 6c of the wedge 6a. Then, at an appropriate position of the wedge portion 6a or the bolt portion 6b at an intermediate position in the length direction of the wedge-shaped bolt 6, the wedge-shaped bolt 6 is perpendicular to the length direction of the wedge-shaped bolt 6. In addition, a single or a plurality of second adhesive flow holes 6g are formed so as to penetrate and communicate with the first adhesive flow holes 6f.
A desired number of the second adhesive flow holes 6g are provided at equal intervals on the outer periphery of the wedge-shaped bolt 6, and a slight amount in the bolt length direction is set in order to prevent the tensile strength of the wedge-shaped bolt 6 from being reduced. It is desirable that the holes are shifted.
[0021]
Further, as shown in FIGS. 2A and 2B, the upper end 6c of the wedge 6a has an appropriate depth E from the surface of the upper end 6c, and from the center of the upper end 6c of the wedge 6a. As shown in FIG. 2B, a third adhesive flow hole 6h formed by a cut groove is formed up to the outer peripheral surface. The third adhesive flow hole 6h communicates with the first adhesive flow hole 6f, and penetrates radially toward the outer peripheral surface of the upper end 6c.
[0022]
In the embodiment of the third adhesive flow hole 6h shown in FIG. 2 (b), four holes are provided from the center of the upper end portion 6c. However, the present invention is not limited to this. It may be one or more. Also, the cross-sectional shape of the third adhesive flow hole 6h as a cut groove is not limited to a substantially rectangular shape as shown in FIGS. 2A and 2B, and may be a substantially semicircular shape or a substantially circular shape. Any shape may be used as long as the flowed-in adhesive can flow through the first adhesive flow hole 6f.
[0023]
Next, an outer cylinder body to be assembled around the wedge-shaped bolt 6 will be described.
Reference numeral 7 denotes an outer cylindrical body which is formed of a metal of the same material as the wedge-shaped bolt 6 or a steel material such as carbon steel (SCM) and has a structure adapted to the shape of the wedge-shaped bolt 6. I have. That is, the outer cylindrical body 7 has a cylindrical shape if the wedge-shaped bolt is formed in a cylindrical body, and a rectangular cylindrical body if the wedge-shaped bolt is formed in a prismatic body. Thus, the inside of the outer cylinder 7 has a through hole 7a formed in the length direction.
[0024]
One side of the outer cylinder 7 has a desired number of slits 7b, 7b, as shown in FIG. Although four slits 7b are formed in the embodiment, the present invention is not limited to this, and two slits 7b may be formed at positions facing each other. The slits 7b, 7b, 7b, 7b communicate with the through-hole 7a formed substantially at the center of the cross section of the outer cylinder 7. Therefore, when the outer cylinder 7 is inserted into the wedge-shaped bolt 6 and pushed into the wedge 6a, a part of the outer cylinder 7 is formed between the slits 7b, 7b, 7b, 7b. The outer cylindrical body 7 is fixed to the wedge-shaped bolt 6 while the movable stopper pieces 7c, 7c, 7c, 7c constituting are expanded as shown by phantom lines in FIG.
[0025]
A description will be given of an assembling procedure and an operation of the mechanical anchor C for injecting an adhesive according to the first embodiment of the present invention, an apparatus for bonding a steel plate to a concrete structure using the mechanical anchor C for injecting an adhesive, and the like.
[0026]
First, as shown in FIG. 3, a housing hole 9 for housing the mechanical anchor C for injecting the adhesive is provided in a predetermined shape of the concrete structure 8 composed of a girder, a beam, a pier, a concrete slab, a wall or a floor slab. Drill at the site. In this case, the accommodation hole 9 is perforated with an appropriate diameter and depth using a drill or the like. Further, the cutting powder retained in the accommodation hole 9 is collected by a blower or a dust collector and is removed to the outside. After inserting the wedge-shaped bolt 6 into the accommodation hole 9 and then inserting the outer cylinder 7 from the bolt portion 6b of the wedge-shaped bolt 6, the outer cylinder 7 is inserted into the outer cylinder 7 with, for example, a hammer. Drive in the end 7d. As shown in FIG. 3, the movable stopper pieces 7c, 7c, 7c, 7c of the outer cylindrical body 7 are expanded by the inclined surfaces 6j of the wedge portions 6a, and the ends 7e of the outer stoppers 7 are formed on the inner wall surface 9a of the accommodation hole 9. To join. Thus, the mechanical anchor C for injecting the adhesive is fixed in the concrete structure 8. In this case, the diameter of the housing hole 9 is, for example, 2 to 3 (mm) larger than the width of the outer cylindrical body 7 in order to place the mechanical anchor C for injecting the adhesive and to secure a flow path of the adhesive. It is set to be wide.
[0027]
The steel plate 10 is disposed on the lower surface 8a of the concrete structure 8, for example, a concrete floor slab, with a gap 11 of, for example, 5 (mm) via a spacer (not shown).
The steel plate 10 has a bolt insertion hole 10a. The bolt portion 6b of the wedge-shaped bolt 6 is inserted into the bolt insertion hole 10a, and a flat washer 12 and a spring seat 13 are attached to the lower surface 10b of the steel plate 10. insert. Then, the nut 14 is screwed from the bolt portion 6. Thus, the mechanical anchor C for injecting the adhesive is fixed to the concrete structure 8 and the steel plate 10.
[0028]
Here, for example, an adhesive made of a fluid such as a grease-like polyester resin, a low thixotropic epoxy resin, or a resin for suppressing neutralization is injected from various resin injectors in the direction of arrow F shown in FIG. Thus, the injected adhesive flows through the first adhesive flow hole 6f formed in the wedge-shaped bolt 6, and passes through the second adhesive flow hole 6g, and the spout or opening thereof. And flows down the surface of the wedge-shaped bolt portion 6 or flows down through the gap of the slit 7b. Then, the adhesive flows in the direction of arrow G and flows into the gap 11. If a plurality of the second adhesive flow holes 6g are provided in the wedge-shaped bolt portion 6, the adhesive flows into the gap 11 by the same operation.
[0029]
On the other hand, the adhesive that has flowed through the first adhesive flow hole 6f flows into the third adhesive flow hole 6h, that is, the four grooves shown in FIG. 2B, and travels along the surface of the wedge-shaped bolt 6. Or, it flows down through the gap of the slit 7b. Then, the adhesive flows in the gap H while flowing in the direction of arrow H. Further, the adhesive is transmitted from the third adhesive flow hole 6h to the surface of the outer cylindrical body 7 and the inner wall surface 9a of the housing hole 9, and flows down into the gap 11.
Thus, the adhesive spreads evenly in the gap 11 formed by the steel plate 10 and the lower surface 8a of the concrete structure 8, and adheres and fixes the steel plate 10 to the concrete structure 8.
[0030]
The present invention constitutes a steel plate bonding apparatus for a concrete structure by combining concrete, the mechanical anchor C for injecting the adhesive, the steel plate 10 and the nut 14 as a tightening means as described above.
[0031]
Further, as described above, the present invention provides a step of cutting a receiving hole 9 having a desired diameter and depth at a desired portion of the concrete structure 8 by a drilling tool such as a drill, and a step of cutting the receiving hole after cutting. A step of collecting the cutting powder remaining in the blower 9 with a blower or a dust collector; forming a wedge portion 6a and a bolt portion 6b in the receiving hole 9; A step of inserting wedge-shaped bolts 6 perforated on the inner and outer surfaces, and a hammer or other driving tool for forming an outer cylinder 7 having a desired number of slits 7b of a desired length and inserted around the outer periphery of the wedge-shaped bolts 6 A step of expanding the movable stopper pieces 7c, 7c, 7c, 7c between the slits 7b and driving the movable stoppers 7c, 7c, 7c, 7c into the inner part of the accommodation hole 9; inserting the bolt part 6b of the wedge-shaped bolt 6 into the concrete; With a gap 11 on the lower surface of the structure 8 A step of fixing the steel plate 10 by the slot 14, and an injection of the adhesive by injecting and flowing the adhesive into the first to third adhesive flow holes 6f to 6g of the wedge-shaped bolt 6 and flowing into the gap 11. Provided is a method of bonding steel plates to a concrete structure, which is a process.
[0032]
Embodiment 2 of the present invention
Second Embodiment A mechanical anchor I for injecting an adhesive according to a second embodiment of the present invention will be described with reference to FIG.
[0033]
FIG. 4 shows a driving pin and a bolt having a perforated hole to be fitted around the driving pin in the second embodiment of the mechanical anchor I for injecting an adhesive according to the present invention. FIG. 3 is a side view in which a main part of the bolt is cut away. (B) is an enlarged plan view in the arrow JJ direction of (a). (C) is a side view of the driving pin driven into the drilled hole of the bolt.
[0034]
A bolt 15 has a slit 15b of a desired length on one side and a male screw 15d on the other side from the center in the longitudinal direction. The bolt 15 is formed of the same material as the wedge-shaped bolt 6 shown in the first embodiment or a steel material such as carbon steel (SCM). The shape of the bolt 15 is a cylinder if a rod-shaped driving pin to be described later is formed in a columnar body, and a rectangular cylinder if formed in a prismatic body. Thus, the inside of the bolt 15 is formed with a perforated hole in the length direction from the lower end, that is, a first driving pin insertion / adhesive flowing hole 15a.
[0035]
One side of the bolt 15 is formed with a desired number of slits 15b, 15b, as shown in FIG. Although four slits 15b are formed as an embodiment as shown in FIG. 4B, the present invention is not limited to this, and two slits 15b may be formed at positions facing each other. The slits 15b, 15b, 15b, 15b communicate with the first driving pin insertion and adhesive flow hole 15a formed substantially at the center of the cross section of the bolt 15, and are formed to cross the bolt 15. Accordingly, a rod-shaped driving pin 16 to be described later is inserted into the bolt 15, and the movable thick portions 15c, 15c, 15c, 15c formed between the slits 15b, 15b, 15b, 15b correspond to FIG. The rod-shaped driving pin, which will be described later, is fixed in the bolt 15 while being expanded as shown by the imaginary line K).
[0036]
The tip portions 15e of the first driving pin insertion and adhesive flow holes 15a formed in the length direction of the bolt 15 have, for example, mutually inclined surfaces, and have a structure in which the apexes are formed at acute angles. At a predetermined position in the length direction of the bolt 15, a single or a plurality thereof is communicated with the first driving pin insertion / adhesive communication hole 15 a and substantially perpendicular to the length direction of the bolt 15. A second adhesive flow hole 15f is formed in the direction. With this configuration, when the adhesive is injected from the lower end 15g of the bolt 15, the adhesive passes from the first driving pin insertion and adhesive flow hole 15a through the second adhesive flow hole 15f and the slit 15b. Then, the bolt 15 flows down from the upper outer peripheral surface to the lower outer peripheral surface, and flows evenly into the accommodation hole 9 accommodating the mechanical anchor I for injecting the adhesive.
[0037]
Reference numeral 16 denotes a rod-shaped driving pin made of the same material as the bolt 15 such as carbon steel (SCM) or another steel material. The diameter of the first driving pin insertion / adhesive distribution hole 15a formed in the bolt 15 is set in the driving pin 16 to secure a flow path for the adhesive in order to inject the adhesive after the driving pin 16 is inserted. For example, it is larger than the driving pin 16 by about 1 (mm). The cross-sectional shapes are substantially the same, and are desirably substantially circular or square. The tip 16a of the driving pin 16 is formed at an acute angle, and when the driving pin 16 is inserted into the first driving pin insertion / adhesive distribution hole 15a and driven, the front end 16a is formed into the slit of the bolt. The slit 15b is easily pushed into the substantially center gap 15h formed by the slit 15b. The driving pin 16 may be constituted by a so-called general-purpose nail. The head 16b of the driving pin 16 is inserted after the driving pin 16 is inserted, so that the adhesive is injected. It should be less than or equal to the diameter. Alternatively, the cross-sectional shape may be circular.
[0038]
Next, a description will be given of an assembly procedure and an operation of the mechanical anchor I for injecting an adhesive according to the second embodiment of the present invention, a concrete structure steel plate bonding apparatus using the mechanical anchor I for injecting an adhesive, and the like.
Since the assembling procedure and operation are substantially the same as those in the first embodiment, they are not shown.
[0039]
The assembling procedure of the first embodiment according to the present invention is substantially the same as that of the mechanical anchor C for injecting an adhesive. , A concrete floor slab, a wall or a floor slab, or the like. In this case, the receiving hole 9 is excavated to have an appropriate diameter and depth by using a drill or the like. Further, the cutting powder retained in the accommodation hole 9 is collected by a blower or a dust collector and is removed to the outside. After the bolt 15 is inserted into the receiving hole 9 and the driving pin 16 is inserted from the lower end 15g of the male screw 15d of the bolt 15, the head 16b of the driving pin 16 is driven with, for example, a hammer. . Thus, the movable thick portions 15c, 15c, 15c, 15c between the slits 15b, 15b, 15b, 15b of the bolt 15 are inserted into the first driving pin as shown by the imaginary line K in FIG. The end of the movable thick portion is joined to the inner wall surface 9a of the housing hole 9 while being expanded by the slope of the tip portion 15e of the adhesive flow hole 15a. Thus, the mechanical anchor I for injecting the adhesive is fixed in the concrete structure 8. In this case, the width of the accommodation hole 9 is wider than the width of the bolt 15 by, for example, about 2 to 3 (mm) in order to place the mechanical anchor I for injecting the adhesive and secure a flow path of the adhesive. Is set to
[0040]
The steel plate 10 is disposed on the lower surface 8a of the concrete structure 8, for example, a concrete floor slab, with a gap 11 of, for example, 5 (mm) via a spacer (not shown).
The steel plate 10 is provided with a bolt insertion hole 10a. The bolt 15 is inserted into the bolt insertion hole 10a, and the flat washer 12 and the spring seat 13 are passed through the male screw 15d at the position of the lower surface 10b of the steel plate 10. Install. Then, the nut 14 is screwed from the bolt portion 6. Thus, the mechanical anchor I for injecting the adhesive is fixed to the concrete structure 8 and the steel plate 10.
In addition, the flat washer 12 and the spring seat 13 do not necessarily need to be provided, and may be omitted.
[0041]
In this case, for example, the above-mentioned adhesive made of a fluid such as a grease-like polyester resin, a low-thixotropic epoxy resin, or a neutralization suppressing resin is injected into various kinds of resins from the direction of arrow L shown in FIG. Fill with a container. Thus, the injected adhesive flows through the first driving pin insertion / adhesive communication hole 15a formed in the bolt 15, and passes through the second adhesive communication hole 15f to its spout or It flows out of the opening and travels along the surface of the bolt 15 or flows down through the slits 15b, 15b, 15b, 15b and the slit substantially central gap 15h. Then, the adhesive flows down the bolt 15 and into the gap 11. If a plurality of the second adhesive flow holes 15f are provided in the bolt 15, the adhesive flows into the gap 11 by the same operation.
Thus, the adhesive spreads evenly in the gap 11 formed by the steel plate 10 and the lower surface 8a of the concrete structure 8, and adheres and fixes the steel plate 10 to the concrete structure 8.
[0042]
In the present invention, as described above, the concrete anchor, the mechanical anchor I for injecting the adhesive, the steel plate 10 and the nut 14 as a tightening means are combined to constitute a steel plate bonding device for a concrete structure.
[0043]
Further, as described above, the present invention cuts the accommodation hole 9 having a desired diameter and depth in a desired portion of the concrete structure 8 composed of concrete or the like, a concrete floor slab, a wall, or the like using a drilling tool such as a drill. And a step of collecting the cutting powder remaining in the accommodating hole 9 after cutting with a blower, a dust collector, or the like; a first driving pin insertion / adhesive agent distribution hole 15a in the accommodating hole 9; A step of inserting a bolt 15 having a desired number of slits 15b, 15b, 15b, 15b of a desired length formed in the shaft and at an upper portion of the second adhesive flow hole 15f communicating in the perpendicular direction, and drilling the bolt 15; That is, the driving pin 16 is inserted into the first driving pin insertion / adhesive distribution hole 15a by a driving tool such as a hammer, and the movable thick portions 15c, 15c, 15c, 15 between the slits 15b, 15b, 15b, 15b are formed. And a step of fixing the steel plate 10 with a nut 14 having a gap 11 on the lower surface of the concrete structure 8 by inserting a first driving pin and inserting the adhesive into the inner portion of the adhesive flow hole 15a. And an adhesive injecting step of injecting and flowing the adhesive into the first and second adhesive flowing holes 15a and 15f of the bolt 15 and flowing the adhesive into the gap 11. provide.
[0044]
The steel structure bonding apparatus for a concrete structure according to the present invention described above is described as being configured by the above-described assembling procedures and construction methods when constructing various types of concrete structures such as bridges, girders or concrete walls. The steel plate 10 installed on the lower surface 8a of the concrete structure 8 is not limited to this, that is, when the above-described concrete structure according to the present invention is aged, and especially when a wheel load or other external force is constantly applied on the road. The steel plate 10 is deflected and peels off from the lower surface 8a of the concrete structure 8. This is the so-called floating phenomenon of the steel sheet 10. In order to cope with this floating phenomenon, the present invention is applied as a repair work for a steel plate of a concrete structure. In this case, a hole is drilled in the floating portion of the steel plate and the lower surface 8a of the concrete structure 8. Then, the adhesive is injected from the wedge-shaped bolt portion 6 or the bolt 15 of the adhesive-injected mechanical anchor C or I fixed to the steel plate 10 in the floating phenomenon portion, thereby easily and quickly reducing the number of work steps. Then, the adhesive can be poured into the gap 11 and the steel plate 10 can be closely fixed to the lower surface of the concrete structure 8.
[0045]
【The invention's effect】
The mechanical anchor for injecting an adhesive and the apparatus for bonding a steel plate to a concrete structure according to the present invention have the above-described configuration, operation, or method, and thus have the following effects.
[0046]
According to the first aspect of the present invention, a wedge-shaped bolt having a wedge part formed on one side and a bolt part having a male thread provided on the other side, and a slit having a desired length located on the outer periphery of the wedge-shaped bolt are provided. In a mechanical anchor comprising a desired number of outer cylinders formed in the width direction, a first adhesive flow hole penetrating in the length direction of the wedge-shaped bolt; An intermediate position, a second adhesive flow hole communicating with the first adhesive flow hole, and penetrating a desired number of the second adhesive flow hole in a direction substantially perpendicular to the length direction of the wedge-shaped bolt; A mechanical anchor for injecting an adhesive, comprising: a third adhesive flow hole having a desired number of cut grooves communicating with the first adhesive flow hole from the center of the upper end to the outer peripheral surface. provide.
With this configuration, the mechanical function of the single mechanical anchor and the function of injecting the adhesive are combined with the single mechanical anchor, so that a stable reinforcing effect is provided, and a different resin injecting device or adhesive receiving device is used. In addition to eliminating the need for members, the number of steps for injecting the adhesive and bonding the steel sheet can be greatly reduced, and the number of devices and parts related to the bonding of the steel sheet is reduced, thereby improving the working efficiency of the repair work and the like for the steel sheet.
[0047]
In addition, the steel plate does not need to be provided with a hole for mounting another anchor bolt or a hole for injecting an adhesive, and a hole for mounting a mechanical anchor for injecting an adhesive may be provided. There is an effect that the number of drilling operations is greatly reduced without any modification.
[0048]
Further, since the first to third adhesive flow holes are provided in the length direction of the wedge-shaped bolt of the mechanical anchor and in a direction substantially perpendicular to the wedge-shaped bolt, the wedge-shaped bolt is bonded to the concrete structure between the steel plate and the accommodation hole in the concrete structure. The adhesive is efficiently distributed, and the adhesive is filled into the gap formed between the concrete structure and the steel plate from the outlet of the adhesive distribution hole provided at the bottom of the mechanical anchor and the side of the anchor, and the two are adhered to each other. It has the effect of fixing and significantly improving the reinforcing effect of the concrete structure.
[0049]
According to the second aspect of the present invention, the third adhesive flow hole is constituted by four radial incisions crossing the wedge-shaped bolt axis at an interval of 90 ° from each other. A mechanical anchor for adhesive injection is provided.
With such a configuration, the adhesive injected from the mechanical anchor flows through the first to third adhesive flow holes, and in particular, the adhesive radially flows from the top of the wedge to the outer periphery. Further, the adhesive is uniformly transmitted to the gap between the concrete structure and the steel sheet through the outer peripheral surface below the wedge portion, and is distributed, so that the bonding efficiency of the steel sheet and the work efficiency are greatly improved. There is.
[0050]
According to the third aspect of the present invention, a rod-shaped driving pin having a sharp end is formed, and a desired number of slits are formed on one side of the driving pin in the length direction so as to traverse the driving pin. A mechanical anchor comprising a bolt having a male screw provided on the other side, wherein the depth is from the other end to at least the position of the slit, and the tip of the bolt is in the length direction of the bolt. A first driving pin insertion / adhesive distribution hole formed at an acute angle and communicating with the slit is formed, and is communicated with the driving pin insertion / adhesion distribution hole at a desired position in the longitudinal direction of the bolt. A mechanical anchor for injecting an adhesive, characterized in that a desired number of the second adhesive flow holes are formed through the bolt in a direction substantially perpendicular to the length direction of the bolt.
With such a configuration, in addition to the effect of the invention described in claim 1, the mechanical anchor can be extremely easily driven into a bolt and a concrete structure by a rod-shaped driving pin, and can be easily and quickly converted into concrete. There is an effect that it can be attached to a structure.
[0051]
According to the invention as set forth in claim 4, the slit is constituted by four through-grooves which cross the bolt axis at an interval of 90 ° from each other, and the mechanical anchor for injecting an adhesive according to claim 3 is provided. I will provide a.
With such a configuration, in addition to the effect of the invention described in claim 3, the adhesive injected from the mechanical anchor flows into the first driving pin insertion / adhesive communication hole, and in particular, the adhesive is applied to the bolt. The adhesive radially flows from the slits provided to the outer periphery of the bolt, and further down the outer periphery of the bolt to fill the gap between the concrete structure and the steel plate with the adhesive evenly and distributes the steel plate. This has the effect of greatly improving the bonding efficiency and work efficiency of the device.
[0052]
According to the invention as set forth in claim 5, wedge-shaped bolts having concrete, a wedge part formed on one side and a bolt part having a male thread provided on the other side, and a desired length located outside the wedge-shaped bolt are provided. In a mechanical anchor comprising an outer cylinder having a desired number of slits formed in the length direction, a first adhesive flow hole penetrating in the length direction of the wedge-shaped bolt; A second adhesive flow hole which is substantially at a middle position in the longitudinal direction, communicates with the first adhesive flow hole, and penetrates a desired number of the second adhesive flow hole in a direction substantially perpendicular to the length direction of the wedge-shaped bolt; A mechanical anchor for injecting an adhesive having a third adhesive flow hole formed of a desired number of cut grooves communicating with the first adhesive flow hole from the center of the upper end of the bolt portion to the outer peripheral surface, Insert the wedge bolts and under the concrete Providing a steel sheet which is disposed to form an adhesive injection gap, the steel sheet bonding apparatus of the concrete structure, characterized in that it is composed of a nut screwed to the wedge bolts from the underside of the steel plate.
With this configuration, the mechanical function of the single mechanical anchor and the function of injecting the adhesive are combined with the single mechanical anchor, so that a stable reinforcing effect is provided, and a different resin injecting device or adhesive receiving device is used. In addition to eliminating the need for components, it can significantly reduce the number of steps for injecting adhesives and bonding steel sheets, and also reduce the number of equipment and components involved in bonding steel sheets and improve the efficiency of steel plate repair work, etc. It has the effect of providing equipment and construction methods.
[0053]
Also, the steel plate does not need to be provided with a hole for injecting an adhesive, and may be provided with a hole for mounting a mechanical anchor for injecting an adhesive, and the drilling work is significantly reduced without weakening the concrete slab. It is effective in providing a steel plate bonding apparatus and a construction method for concrete structures.
[0054]
Further, since the first to third adhesive through-holes are provided in the length direction of the wedge-shaped bolt of the mechanical anchor and in a direction substantially perpendicular to the length thereof, the first and third adhesive through-holes are bonded between the concrete structure and the steel plate and the accommodation holes in the concrete structure. The agent is efficiently circulated, and the adhesive is filled into the gap formed in the concrete structure from the adhesive circulation hole jet port provided on the bottom and the anchor side of the mechanical anchor, and the two are tightly fixed. The present invention is effective in providing a concrete structure steel plate bonding apparatus and a construction method in which the effect of reinforcing a concrete structure is significantly improved. Further, the present invention can be applied to various concrete structures, for example, girders, beams and piers, concrete slabs, walls and floor slabs, and has an effect of expanding the applicable range.
[0055]
According to the invention as set forth in claim 6, concrete, a rod-shaped driving pin having a sharp tip formed at an end thereof, and a desired number of slits each having a desired length in the length direction are disposed on the outer periphery of the driving pin and on one side. In a mechanical anchor comprising a bolt having a transverse penetration formed and a male screw provided on the other side, the depth is from the other end to at least the position of the slit, and is a lengthwise direction of the bolt. A first driving pin insertion / adhesive distribution hole is formed at an end of the first insertion pin and formed at an intended position in the length direction of the bolt. And a mechanical anchor for injecting an adhesive formed by penetrating a desired number of second adhesive flow holes in a direction substantially perpendicular to the length direction of the bolt. Glued to the bottom And the injection gap formed by the arranged steel, to provide a steel sheet bonding apparatus of the concrete structure, characterized in that it is composed of a nut screwed with the male screw of the bolt from the lower surface of the steel plate.
With such a configuration, in addition to the effect of the invention described in claim 1, the mechanical anchor can be extremely easily driven into a bolt and a concrete structure by a rod-shaped driving pin, and can be easily and quickly converted into concrete. There is an effect of providing a concrete structure steel plate installation device and a construction method that can be attached to the structure. Further, the present invention can be applied to various concrete structures, for example, girders, beams and piers, concrete slabs, walls and floor slabs, and has an effect of expanding the applicable range.
[Brief description of the drawings]
FIG. 1 shows a wedge-shaped bolt and an outer cylindrical body to be assembled around the wedge-shaped bolt in a first embodiment of a mechanical anchor for injecting an adhesive according to the present invention. It is the side view which notched.
2A and 2B are each a part view of the mechanical anchor C for injecting an adhesive shown in FIG. 1, wherein FIG. 2A is a side view of a wedge-shaped bolt, and FIG. (C) is a side view showing the outer cylindrical body assembled around the outer periphery of the wedge-shaped bolt.
FIG. 3 is a vertical sectional view showing an assembled state and a concrete steel plate bonding apparatus or a method of bonding the mechanical anchor for injecting an adhesive according to the first embodiment of the present invention.
FIG. 4 is a perspective view showing a driving pin and a bolt having a driving pin insertion / adhesive flowing hole to be assembled around the driving pin in a mechanical anchor for injecting an adhesive according to a second embodiment of the present invention. (A) is a side view in which a main part of the bolt is cut away, (b) is an enlarged plan view in the direction of arrows JJ in (a), and (c) is a hole for inserting a driving pin of the bolt and passing the adhesive through the hole. It is a side view of the driving pin to be driven.
5A and 5B show an example of a configuration in which a steel plate is joined to a concrete structure according to the prior art, wherein FIG. 5A is a vertical sectional view, and FIG. 5B is a bottom view of FIG. It is.
6A and 6B are views showing an adhesive receiving member used for joining a steel plate to a concrete structure according to the prior art, wherein FIG. 6A is a perspective view and FIG. It is the notched vertical sectional view.
[Explanation of symbols]
1 concrete floor slab
1a Lower surface of concrete slab
2 Steel plate
3 Adhesive receiving member
3a One connecting pipe
3b Deformed part
3c The other connecting pipe
3d string
3e stopper
4 Adhesive injection hole
5 Hole-in anchor
6 Wedge bolt
6a Wedge part of wedge-shaped bolt
6b Bolt part of wedge-shaped bolt
6c Upper end of wedge
6d Base end of wedge
6e Male thread of bolt
6f First adhesive flow hole
6g Second adhesive flow hole
6h Third adhesive flow hole (cut groove)
7 outer cylinder
7a Through-hole of outer cylinder
7b Slit of outer cylinder
7c Movable stopper of outer cylinder
7d End of outer cylinder
7e End of wedge
8 concrete structures
8a Lower surface of concrete structure
9 accommodation hole
9a Inner wall of accommodation hole
10 Steel plate
10a Bolt insertion hole
10b Lower surface of steel plate
11 gap
12 Flat washers
13 Spring seat
14 nuts
15 volts
15a 1st driving pin and adhesive flow hole
15b bolt slit
Movable thick part of 15c bolt
15d bolt external thread
15e Tip of the first driving pin and adhesive flow hole
15f Second adhesive flow hole
15g bolt lower end
15h slit approximately center gap
16 Driving pin
16a Tip of driving pin
16b Driving pin head
A gap
C. Mechanical anchor for injecting adhesive of Embodiment 1
E Depth of third adhesive flow hole
F Adhesive injection direction
G Adhesive flow
H Adhesive flow
I. Mechanical anchor for injecting adhesive according to Embodiment 2
L Adhesive injection direction

Claims

A wedge-shaped bolt formed with a wedge portion on one side and a bolt portion provided with a male screw on the other side, and a desired number of slits of a desired length located on the outer circumference of the wedge-shaped bolt formed in the length direction. In a mechanical anchor comprising a cylindrical body, a first adhesive flowing hole penetrating in a longitudinal direction of the wedge-shaped bolt and a substantially intermediate position in a longitudinal direction of the wedge-shaped bolt, wherein the first adhesive A second adhesive flow hole communicating with the agent flow hole and penetrating a desired number of the wedge-shaped bolts in a direction substantially perpendicular to the length direction of the wedge-shaped bolt; A mechanical anchor for injecting an adhesive, comprising a third adhesive flow hole having a desired number of cut grooves communicating with the adhesive flow hole.

3. The mechanical anchor for injecting an adhesive according to claim 1, wherein the third adhesive flow hole is formed by four radial cuts that cross the wedge-shaped bolt axis at an interval of 90 degrees from each other.

A rod-like driving pin having a sharp end formed at the tip thereof, a slit of a desired length positioned on the outer periphery of the driving pin, and a desired number of slits formed on one side in a lengthwise direction, and a male screw provided on the other side. In a mechanical anchor comprising a bolt, the tip is formed at an acute angle in the length direction of the bolt from the other end to at least the position of the slit, and communicates with the slit. A first driving pin insertion / adhesive distribution hole is bored, and at a desired position in the length direction of the bolt, which communicates with the driving pin insertion / adhesion distribution hole and extends in the length direction of the bolt. A mechanical anchor for injecting an adhesive, characterized in that a desired number of the second adhesive flow holes are formed to penetrate substantially perpendicularly.

4. A mechanical anchor for injecting an adhesive according to claim 3, wherein said slit is constituted by four through grooves crossing the bolt axis at an interval of 90 [deg.] To each other.

Concrete, a wedge-shaped bolt formed with a wedge part on one side and a bolt part provided with a male thread on the other side, and a desired number of slits of a desired length located on the outer circumference of the wedge-shaped bolt are formed in the length direction. In the mechanical anchor comprising the formed outer tubular body, a first adhesive flow hole penetrating in a length direction of the wedge-shaped bolt, and a substantially intermediate position in a length direction of the wedge-shaped bolt, A second adhesive flow hole communicating with the first adhesive flow hole and penetrating a desired number thereof in a direction substantially perpendicular to the length direction of the wedge-shaped bolt; A mechanical anchor for injecting an adhesive having a third adhesive flow hole formed of a desired number of cut grooves communicating with the first adhesive flow hole, the wedge-shaped bolt being inserted and the concrete Adhesive gap on the bottom of the And location steel sheet, steel sheet bonding apparatus of the concrete structure, characterized in that it is composed of a nut screwed to the wedge bolts from the underside of the steel plate.

Concrete, a rod-shaped driving pin having a sharp end formed at the tip thereof, a slit having a desired length positioned on the outer periphery of the driving pin, and a desired number of slits formed on one side in a lengthwise direction and a male screw on the other side. In a mechanical anchor comprising a peripheral bolt, the depth is at least from the other end to the position of the slit, and the slit forms an acute angle in the longitudinal direction of the bolt, and A first driving pin insertion / adhesive distribution hole communicating with the bolt is formed at a desired position in the length direction of the bolt, and communicates with the driving pin insertion / adhesive distribution hole and extends in the length direction of the bolt. A mechanical anchor for injecting adhesive is formed by penetrating a desired number of second adhesive flow holes in a direction substantially perpendicular to the hole, and the bolt is inserted and an adhesive injection gap is formed in the lower surface of the concrete. Placed Plate and the steel sheet bonding apparatus of the concrete structure, characterized in that it is composed of a nut screwed with the male screw of the bolt from the lower surface of the steel plate.