JP3979585B2

JP3979585B2 - Welded rebar

Info

Publication number: JP3979585B2
Application number: JP2002179238A
Authority: JP
Inventors: 清春鈴木
Original assignee: 有限会社山形仮設
Priority date: 2002-06-19
Filing date: 2002-06-19
Publication date: 2007-09-19
Anticipated expiration: 2022-06-19
Also published as: JP2004019373A

Description

【０００１】
【発明の目的】
この発明は、鉄筋コンクリート造建築物の基礎や壁、床スラブ、護岸法面、コンクリート舗装道路、プレキャスト・コンクリート製品等を補強してひび割れや破損を防止する配筋技術に関するものであり、特に、一定の面積単位毎に工場で生産され、設置箇所にて連結することにより、広い範囲に効率良く、且つ均質な配筋を施すことを実現、可能とする新規な構造からなる溶接鉄筋網を提供しようとするものである。
【０００２】
【従来の技術】
建築物のコンクリート壁や床スラブ、コンクリート舗装道路等を補強してひび割れや破損を防止するため、建設現場のコンクリート打設箇所に、直径６〜５０ｍｍ前後までの丸鋼や異形鉄筋等を設置し、これら鉄筋同士の交叉箇所の夫々を必要に応じて鉄線からなる結束線で緊結して一体的に組み立てることにより、コンクリート型枠内に必要強度に応じた配筋を施すことが一般に行われており、こうした丸鋼や異形鉄筋を工事現場で組み合わせて配筋する工法は、高度な作業技術を要求され、作業者の技能、熟達度合いによって作業時間に大きな差を生じてしまう上、万が一正確な配筋がなされなかった場合には、建築物の強度に大きな問題を残すこととなってしまうことから、熟練作業者の充分な確保と、こと細かな工事監理を遂行することが求められる。
【０００３】
しかしながら、建築現場では、多種多様な工事業者が、夫々の専門分野の施工を行うために、既に配筋作業を完了し、工事監理者がその内容を確認して配筋作業が適正に行われたことを確認した後に、入り込んで鉄筋位置を動かしてしまう虞れもあり、現場で自在に組み立てることのできる丸鋼や異形鉄筋を、結束線で緊結した配筋構造は、コンクリート打設を行うまで細心の注意を払わなければならず、作業効率を向上させることが困難であった。
【０００４】
そのため、最近では、高品質を確保しやすい工場生産によって複数本の縦線と横線とを格子形状に交叉させて溶接し、一体化した溶接鉄筋網を、工事現場に運び、設置箇所に応じた枚数の溶接鉄筋網を、配置して隣接状配置となった溶接鉄筋網同士の適所を結束線で緊結するという配筋作業が行われるようになり、熟練作業者の確保が困難となった工事現場の作業性を高め、鉄筋コンクリートの品質の安定化に効を奏するものとなっている。
【０００５】
溶接鉄筋網は、丸鋼や異形鉄筋等を一本ずつ配筋するのに比較し、遥かに正確且つ迅速に設置することができる上、各交叉部分が確りと溶接されているので高い強度を確保することができ、しかも配筋作業後の電気、水道その他の配線管工事やコンクリート打設作業の際の配筋の乱れを防止し易いという秀れた点をもっているが、一枚毎の溶接鉄筋網の強度が高い分、複数枚を接続した場合には、相互の接続部分に応力が集中することとなるが、その接合部分の緊結強度が個々の作業者によって異なり、不注意な連結をしてしまうと打設コンクリートの強度を大幅に低下させてしまう虞れがあった。
【０００６】
こうした溶接鉄筋網の連結構造を改良したものとして特開昭６２−８４８４４号公報に開示された溶接金網のように、従前までの結束線ではなく、予め螺旋状に形成された連結金具を用いて溶接鉄筋網同士を連結する構造や、実開昭６４−２６４７７号公報の溶接金網連結体に開示された、溶接金網の各端部に環を形成し、隣接する溶接金網の環部同士を同心状に配置させ、これらの環部に共通の連結骨線を挿通して、隣接する溶接金網を連結する技術等が既に開発されているが、何れも溶接鉄筋網の外に連結用の別部品を必要とするため、部品点数を増大させ、配筋作業を繁雑なものにしてしまうという欠点をもつものであった。
【０００７】
この発明は、以上のように、溶接鉄筋網は、正確で安定した配筋構造を確保することができるという利点があって次第に利用範囲を拡大しているものの、圧縮強度に秀れる鉄筋コンクリート内で引張強度を担う溶接鉄筋網が、互いの連結部分を結束線に頼る構造では、さらに高い強度を確保することができず、また、溶接鉄筋網同士の連結専用に別部品を設けた構造とするれば、部品点数を増大させて部品管理や配筋作業を繁雑化してしまいという欠点を生じてしまうという問題があり、それら諸問題を解消する策はないものかとの判断から、逸速くその開発、研究に着手し、長期に渡る試行錯誤と幾多の試作、実験とを繰り返してきた結果、今回、遂に新規な構造からなる溶接鉄筋網を実現化することに成功したものであり、以下では、図面に示すこの発明を代表する実施例と共に、その構成を詳述することとする。
【０００８】
【発明の構成】
図面に示すこの発明を代表する実施例からも明確に理解されるように、この発明の溶接鉄筋網は、基本的に次のような構成から成り立っている。
即ち、所定間隔を隔てて平行状に配列した複数本の縦線と、これら縦線の配列が形成する平面の一面側に、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を一体化した複数本の横線とを有し、略等間隔配置となる幾数本かの縦線の一方端、および／または、略等間隔配置となる幾数本かの横線の一方端を、連結の際に重ね合わせ状となる方向に向けて９０ないし１８０゜折曲して略Ｌ型状あるいは略「つ」の字状の連結用鈎部を形成するようにする一方、それら複数本の横線の中の連結用鈎部を形成してある横線には、当該横線一本分の間隙を置いて、それら等間隔配置の横線とは別体で、同様に連結用鈎部を形成してある横線が同様の姿勢にしたまま近接、平行状配置で同様に一体化され、同一構造の二枚のものの一方の横線の連結用鈎部を他方の所定の縦線に連結してそれら二枚のものが連結状とされたときの双方における縦線軸心方向への移動を阻止し得るものとした構成を要旨とする溶接鉄筋網である。
【０００９】
この基本的な構成からなる溶接鉄筋網を、より具体的な構成のものとして示すと、所定間隔を隔てて平行状に配列した複数本の縦線と、これら縦線の配列が形成する平面の一面側に、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を一体化した複数本の横線とを有し、略等間隔配置となる幾数本かの縦線の一方端、および／または、略等間隔配置となる幾数本かの横線の一方端を、連結の際に重ね合わせ状となる方向に向けて９０ないし１８０゜折曲して略Ｌ型状あるいは略「つ」の字状の連結用鈎部を形成した上、縦線の他方端側適所に位置する横線間に、これら横線と平行状に配置されて連結用鈎部が直接的に係合可能な連結用横線、もしくは連結用鈎部が掛着する横線に隣接配置して補強する補強用横線の何れか一方もしくは双方を各縦線との交叉箇所で一体化すると共に、横線の他方端側適所に位置する縦線間にも、これら縦線と平行状に配置されて連結用鈎部が直接的に係合可能な連結用縦線、もしくは連結用鈎部が掛着する縦線に隣接配置して補強する補強用縦線の何れか一方もしくは双方を各横線との交叉箇所で一体化するようにする一方、それら複数本の横線の中の連結用鈎部を形成してある横線には、当該横線一本分の間隙を置いて、それら等間隔配置の横線とは別体で、同様に連結用鈎部を形成してある横線が同様の姿勢にしたまま近接、平行状配置で同様に一体化され、同一構造の二枚のものの一方の横線の連結用鈎部を他方の所定の縦線に連結してそれら二枚のものが連結状とされたときの双方における縦線軸心方向への移動を阻止し得るものとした溶接鉄筋網であるということができる。
【００１０】
この発明の溶接鉄筋網を、別の表現によるものとすれば、所定間隔を隔てて平行状に配列した複数本の縦線と、これら縦線の配列が形成する平面の一面側に、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を一体化した複数本の横線とを有し、略等間隔配置となる幾数本かの横線の一方の突出端を、連結の際に重ね合わせ状となる方向に向けて９０ないし１８０゜折曲して略Ｌ型状あるいは略「つ」の字状の連結用鈎部を形成するようにする一方、それら複数本の横線の中の連結用鈎部を形成してある横線には、当該横線一本分の間隙を置いて、それら等間隔配置の横線とは別体で、同様に連結用鈎部を形成してある横線が同様の姿勢にしたまま近接、平行状配置で同様に一体化され、同一構造の二枚のものの一方の横線の連結用鈎部を他方の所定の縦線に連結してそれら二枚のものが連結状とされたときの双方における縦線軸心方向への移動を阻止し得るものとした構成からなる溶接鉄筋網ということができる。
【００１１】
これを、さらに具体的な構成で示せば、所定間隔を隔てて平行状に配列した複数本の縦線と、これら縦線の配列が形成する平面の一面側に、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を一体化した複数本の横線とを有し、少なくとも略等間隔配置となる幾数本かの横線の一方の突出端を、連結の際に重ね合わせ状となる方向に向けて９０ないし１８０゜折曲して略Ｌ型状あるいは略「つ」の字状の連結用鈎部を形成する一方、横線の他方端側適所に位置する縦線間には、これら縦線と平行状に配置されて連結用鈎部が直接的に係合可能な連結用縦線、もしくは連結用鈎部が掛着する縦線に隣接配置して補強する補強用縦線の何れか一方もしくは双方を各横線との交叉箇所で一体化するようにする一方、それら複数本の横線の中の連結用鈎部を形成してある横線には、当該横線一本分の間隙を置いて、それら等間隔配置の横線とは別体で、同様に連結用鈎部を形成してある横線が同様の姿勢にしたまま近接、平行状配置で同様に一体化され、同一構造の二枚のものの一方の横線の連結用鈎部を他方の所定の縦線に連結してそれら二枚のものが連結状とされたときの双方における縦線軸心方向への移動を阻止し得るものとした溶接鉄筋網であるということができる。
【００１２】
縦線は、交叉状に配置された複数本の横線と一体化して溶接鉄筋網の長さ方向に連続する強度を確保する機能を果たすものであり、長さ方向に継ぎ目なく連続する丸鋼あるいは異形鉄筋等から形成しなければならず、適宜等間隔を隔てた幾数本かの一方端を、折曲して連結用鈎部としたものとする外、残りの端部は、そのまま直線状の突出端とすべきであり、互換性や作業性を確保するために、一般的な規格寸法に統一したものとするのが望ましいく、具体的には３．２〜６ｍｍ前後の線径とし、２〜４ｍ程度の長さに設定されたものとするのが望ましいが、建築物の規模等に応じて適宜設定することができる。
【００１３】
横線は、交叉状に配置された複数本の縦線と一体化して溶接鉄筋網の巾方向に連続する強度を確保する機能を果たすものであり、巾方向に継ぎ目なく連続する丸鋼あるいは異形鉄筋等から形成しなければならず、適宜等間隔を隔てた幾数本かの一方端を、折曲して連結用鈎部とする外、残りの端部を、直線状のままの突出端とすべきであって互換性や作業性を確保するために、一般的な規格寸法に統一したものとするのが望ましいく、具体的には３．２〜６ｍｍ前後の線径とし、１〜２ｍ程度の長さに設定されたものとするのが望ましいが、縦線と同様に建築物の規模等に応じて適宜設定することができる。
【００１４】
連結用鈎部は、隣接状に重ね合わせられた溶接鉄筋網の縁部同士を掛着状に連結し、特に溶接鉄筋網同士を引き離そうとする方向への引張力に抗して連結状態を強固に保持する機能を果たすものであり、少なくとも略等間隔配置となる幾数本かの縦線または横線の一方端を、溶接鉄筋網同士の互いの縁部を連結する際に重ね合わせ状となる方向に向けて９０〜１８０゜前後折曲して略Ｌ型状あるいは略「つ」の字状に形成したものとしなければならず、必要に応じて、その先端部付近を１８０゜を越えて内側に折曲し、または、プレスして直径を拡大し、あるいは、内側へ向けて凸山状に折曲する等した脱落防止片を形成したものとすることができる。
【００１５】
また、連結用鈎部は、後述する実施例にも示すように溶接鉄筋網の最外側に位置する縦線と一致する横線の一方端に形成したものとすることができる外、最外側の縦線から横網目一個分もしくは横網目半分の寸法を外側に延伸させた横線の突出端に形成したものとすることが可能であり、最外側の縦線から溶接鉄筋網内側に、横網目一個分もしくは横網目半分の寸法となる内側位置に、横線の一方端を短縮状として、横網目内側の適宜位置に形成したものとすることも可能であり、縦線に連結用鈎部を形成する場合にも、最外側の横線から縦網目一個分もしくは縦網目半分の寸法を延伸させた縦線突出端、または同寸法を短縮させ、縦網目内側の縦線端に形成した構造とすることができる。
【００１６】
連結用縦線は、横線の他方端側適所に位置する縦線間に、連結する溶接鉄筋網の適宜横線の突出端に形成された各連結用鈎部を掛着可能とする機能を果たすものであって連結に充分に耐える強度を確保できるよう縦線と同一もしくは略同等の素材を選択し、横線と交叉する箇所の全てを一体化したものとすべきである。
【００１７】
補強用縦線は、連結用鈎部が掛着する縦線に隣接配置して掛着した周辺を補強する機能を果たすものであり、縦線と同様の形状寸法に形成され、連結用鈎部が掛着する縦線に近接するよう平行状に配置させ、横線との交叉箇所の全てを一体化したものとすべきである。
【００１８】
連結用横線は、縦線の他方端側適所に位置する横線間に、連結する溶接鉄筋網の適宜縦線の突出端に形成された各連結用鈎部を掛着可能とする機能を果たすものであり、充分な連結強度を確保できるよう横線と同一もしくは略同等の素材を選択し、縦線と交叉する箇所の全てを一体化したものとすべきである。
【００１９】
補強用横線は、連結用鈎部が掛着する横線に隣接配置して掛着した周辺を補強する機能を果たすものであり、横線と同様の形状寸法に形成され、連結用鈎部が掛着する横線に近接するよう平行状に配置させ、縦線との交叉箇所の全てを一体化したものとすべきである。
以下では、図面に示すこの発明を代表する実施例と共に、その構造について詳述することとする。
【００２０】
【実施例】
図１の溶接鉄筋網の概略的な平面図、および図２の溶接鉄筋網の概略的な側面図に示される事例は、直線状の鉄線からなる複数本の縦線を、所定間隔を隔てて平行に配置し、これら縦線の配列が形成する平面の一面側に直線状の鉄線からなる複数本の横線を、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を、電気抵抗溶接によって一体化した上、適宜間隔置き毎の横線突出端を、工事現場に設置する際に重ね合わせ状となる方向に向けて約１８０゜折曲して略「つ」の字状の連結用鈎部を形成した基本的構成からなるこの発明に包含される溶接鉄筋網における代表的な一実施例を示すものである。
【００２１】
当該溶接鉄筋網１は、直径６ｍｍ、長さ２ｍの丸鋼からなる複数本の縦線２，２，……を２００ｍｍ間隔毎に平行状に配置させ、これら平行状に配置された複数本の縦線２，２，……が形成する平面の一面側に対して直径６ｍｍ、長さ１ｍの丸鋼からなる複数本の横線３，３，……を、各縦線２，２，……に直交状の配置とし、各縦線２，２，……および横線３，３，……の端部を、井桁状に四方に突出させるよう、２００ｍｍ間隔毎に平行状の配置とし、二本置きおよび次の三本置きとなる箇所の夫々には、横線３の一本分の間隙を形成するように、二本の横線３，３が近接、平行状に配置させたものとし、縦線２，２，……と横線３，３，……との互いの交叉箇所の全てを、電気抵抗溶接によって一体化したものであって、前記一本分の隙間を形成して配列された横線３，３および、その間に三本並ぶ横線３，３，３中の中央一本の横線３の各一端側突出端を、同端最外側に位置する縦線２を、内側配置とするように約１８０゜折曲して夫々に略「つ」の字状の連結用鈎部４，４，……を形成したものとなっている。
【００２２】
こうした溶接鉄筋網１には、図５の溶接鉄筋網の概略的な平面図、および図６の溶接鉄筋網の概略的な側面図に示される事例のように、各横線３，３，……の連結用鈎部４，４，……を形成したのとは反対側端の、縦線２，２間の双方から１００ｍｍ隔てた位置に、直径６ｍｍ、長さ２ｍの一本の補強用縦線２１を、縦線２，２に平行状となるよう、電気抵抗溶接によって一体に結合したものとすることが可能である。
【００２３】
また、溶接鉄筋網１は、図９の溶接鉄筋網の概略的な平面図、および図１０の溶接鉄筋網の概略的な側面図に示す事例のように、各横線３，３，……の連結用鈎部４，４，……を形成したのとは反対側端の、端部から二本目と三本目の縦線２，２間に、該端部から二本目の縦線２から１５０ｍｍ、三本目の縦線２から５０ｍｍとなる位置に、直径６ｍｍ、長さ２ｍの一本の連結用縦線２２を、各縦線２，２に平行状となるよう、電気抵抗溶接によって一体に結合したものとすることも可能である。
【００２４】
さらにまた、連結用鈎部４は、図１３の連結用鈎部を示す側面図に示されるように、先端付近を側方からのプラス加工によって平面状に圧縮変形させて「つ」の字状の先端部間隙巾を狭巾化する脱落防止片４１を形成したり、あるいは図１４の連結用鈎部の側面図に示すように、凸字形に折曲した脱落防止片４１を形成することが可能である外、図１５の連結用鈎部の側面に示されるように、連結用鈎部４の先端を１８０゜を越えて内側に折曲した脱落防止片４１を形成したものとすることができる。
【００２５】
【作用】
以上のとおりの構成からなるこの発明の溶接鉄筋網１は、図１および図２のような構造とすれば、図３の溶接鉄筋網の連結状態の平面図、および図４の溶接鉄筋網の連結状態の側面図に示されるように、同一構造の二枚の溶接鉄筋網１，１同士の、一方の連結用鈎部４，４，……を、他方の溶接鉄筋網１の横線３，３，……の連結用鈎部４，４，……が設けられていない側の最も端側に位置する縦線２に、係合して連結状とし、一本分の間隔をあけた横線３，３間に、他方の同様に一本分の間隔をあけた横線３，３の中の何れか一方を嵌合するようにして縦線２軸心方向の移動を阻止するものとして連結作業を完了するか、もしくは、双方の溶接鉄筋網１，１同士の縦線２，２，……および横線３，３，……が互いに交叉状となっている複数箇所の中の適所を、図示しない結束線で緊結したものとすることが可能である。
【００２６】
また、図５および図６のように、補強用縦線２１を設けた構造とすれば、図７の溶接鉄筋網の連結状態の平面図、および図８の溶接鉄筋網の連結状態の側面図に示されるように、同一構造の二枚の溶接鉄筋網１，１同士の、一方の連結用鈎部４，４，……を、他方の溶接鉄筋網１の連結用鈎部４，４，……とは反対側となる最も端側の縦線２に係合し、連結状とすれば、それに近接配置された補強用縦線２１が、連結用鈎部４，４，……を係合した縦線２およびその周辺の横線３，３，……を補強して二枚の溶接鉄筋網１，１同士の連結強度を、一段と強固なものとすることが可能である。
【００２７】
そして、図９および図１０に示したように、連結用縦線２２を設けた構造とすれば、図１１の溶接鉄筋網の連結状態の平面図、および図１２の溶接鉄筋網の連結状態の側面図に示されるように、同一構造の二枚の溶接鉄筋網１，１同士の、一方の連結用鈎部４，４，……を、他方の溶接鉄筋網１の連結用鈎部４，４，……とは反対側となる最も端側の縦線２から、二本目の縦線２と三本目の縦線２との間に設けられた連結用縦線２２に係合して連結状とすれば、連結用縦線２２が結合する横線３，３，……や、これに隣接する縦線２，２，……等が、互いに連結部分に働く応力を分散して高い強度を確保するものとなる。さらに、連結用鈎部４，４，……を係合した溶接鉄筋網１と、他方の溶接鉄筋網１の連結用縦線２２およびこれに近接する横線３，３，……や、縦線２，２，……等の適所とを、結束線によって緊結すれば、溶接鉄筋網１，１同士の連結を一層強固なものとすることが可能である。
【００２８】
また、図１３〜図１５に示したように連結用鈎部４の先端付近に、適宜形状に形成された各脱落防止片４１を形成すれば、各連結用鈎部４の縦線２または連結用縦線２２への連結を、より確実なものとして不用意な脱落を防止し、結束線による緊結を不要とすることが可能となる。
【００２９】
【効果】
以上のとおり、この発明の溶接鉄筋網によれば、工場生産によって精密で効率的に大量生産することができると共に、連結用鈎部を形成したことにより、工事現場での配筋作業を効率的に行うことができる上、熟練を要さずとも強固な連結構造を確保することができ、しかも配筋作業終了後に工事監理者が、各溶接鉄筋網の接続状態を確認するだけで、作業確認を簡潔に完了することができるものとなり、従前までの丸鋼や異形鉄筋を現場で組み合わせて一本毎に結束線で緊結する作業や、溶接鉄筋網同士を連結専用の別部品によって連結していた配筋作業等に比較して、格段に効率的で品質の高い鉄筋コンクリートの打設を実現可能とすることができるという秀れた特徴が得られるものである。
【００３０】
特に、実施例に説明した溶接鉄筋網は、上記した特徴に加え、図３および図４中の一本分の間隙を形成するよう近接配置された二本の横線３，３間に、連結する溶接鉄筋網１の同様に近接配置された横線３，３の中の一方を嵌合させるように連結すれば、縦線２軸心の方向にズレ動くことのないよう簡単に固定することができる。
【００３１】
さらに、図７および図８に示したように、補強用縦線２１を設けたことにより、これに隣接する縦線２に、連結する溶接鉄筋網１の連結用鈎部４，４，……を掛着したときに、高い連結強度を確保することができ、溶接鉄筋網１の連結部付近における変形や破損を防止することができ、また、図９および図１０中に示したように、二個目の横網目となる位置の、連結用鈎部４，４，……を設けたのとは反対側となる横線３，３，……端部側であって最外側から二番目の縦線２近傍に連結用縦線２２を設けたものとすれば、図１１および図１２に示したように、隣接する縦線２，２と相俟って連結用鈎部４，４，……強固に繋ぎ止めることができると共に、連結される溶接鉄筋網１，１同士の端部側の横網目略一列分を互いに重ね合わせた状態に連結することができるので、的複数箇所を結束線で緊結してしまえば、一段と高い連結強度を確保することができるものとなる。
【００３２】
そして、図１３〜図１５に示したように、各連結用鈎部４の先端部に様々な形状の脱落防止片４１を形成したものとすれば、結束線を用いることなく、嵌着状に連結するだけで、接鉄筋網１，１同士を簡単且つ確実に連結することができ、配筋作業の労働負担を、さらに軽減することができる。
【００３３】
叙述の如く、この発明の溶接鉄筋網は、その新規な構成によって所期の目的を遍く達成可能とするものであり、しかも製造も容易で、従前までの溶接鉄筋網に比較して設置作業を大幅に効率化することができるので、遥かに経済的なものとすることができる上、正確且つ確実な配筋を施すことを可能とすることができ、溶接鉄筋網同士の連結用の別部品を不要として施工費用の削減と工期の短縮とを確実に達成可能にするものであり、熟練作業者の減少への対応や、経費の削減が求められる建築業界において高く評価され、広範に渡って利用、普及していくものと予想される。
【図面の簡単な説明】
図面は、この発明の溶接鉄筋網の技術的思想を具現化した代表的な幾つかの実施例を示すものである。
【図１】溶接鉄筋網の構造を概略的に示す平面図である。
【図２】溶接鉄筋網の概略的構造を示す側面図である。
【図３】溶接鉄筋網同士の連結構造を示す平面図である。
【図４】溶接鉄筋網同士の連結構造を示す側面図である。
【図５】補強用縦線を設けた溶接鉄筋網の構造を概略的に示す平面図である。
【図６】補強用縦線を設けた溶接鉄筋網の概略的構造を示す側面図である。
【図７】補強用縦線を設けた溶接鉄筋網同士の連結構造を示す平面図である。
【図８】補強用縦線を設けた溶接鉄筋網同士の連結構造を示す側面図である。
【図９】連結用縦線を設けた溶接鉄筋網の構造を概略的に示す平面図である。
【図１０】連結用縦線を設けた溶接鉄筋網の概略的構造を示す側面図である。
【図１１】連結用縦線を設けた溶接鉄筋網同士の連結構造を示す平面図である。
【図１２】連結用縦線を設けた溶接鉄筋網同士の連結構造を示す側面図である。
【図１３】プレス加工によって形成された脱落防止片を示す側面図である。
【図１４】凸状に折曲して形成された脱落防止片を示す側面図である。
【図１５】内側に折曲して形成された脱落防止片を示す側面図である。
【符号の説明】
１溶接鉄筋網
２縦線
２１同補強用縦線
２２同連結用縦線
３横線
４連結用鈎部
４１同脱落防止片[0001]
OBJECT OF THE INVENTION
The present invention relates to a bar arrangement technology for reinforcing cracks and breakage by reinforcing the foundations and walls of reinforced concrete buildings, floor slabs, revetment slopes, concrete paved roads, precast concrete products, etc. Providing a welded rebar network with a new structure that can be produced in a factory for each area unit and connected at the installation location, enabling efficient and uniform reinforcement over a wide range. It is what.
[0002]
[Prior art]
In order to reinforce concrete walls, floor slabs, and concrete paved roads in buildings to prevent cracks and breakage, round steel or deformed bars with a diameter of around 6 to 50 mm are installed at the concrete placement site at the construction site. In addition, it is common practice to place reinforcements according to the required strength in the concrete formwork by assembling and integrally assembling each of the crossing points of these reinforcing bars with binding wires made of iron wires as necessary. However, the method of bar arrangement by combining round steel bars and deformed reinforcing bars at the construction site requires advanced work technology, and the work time varies greatly depending on the skill and proficiency of the worker. If the bar arrangement is not made, it will leave a big problem in the strength of the building. Therefore, sufficient securing of skilled workers and detailed construction supervision will be performed. Door is required.
[0003]
However, at the construction site, a wide variety of construction contractors have already completed the bar arrangement work in order to carry out construction in their respective specialized fields, and the construction supervisor confirms the contents and performs the bar arrangement work properly. After confirming that there is a risk of moving in the position of the rebar, it will be placed concretely in the bar arrangement structure, which consists of round bars and deformed bars that can be assembled freely at the site, with binding wires It was difficult to improve the work efficiency.
[0004]
For this reason, recently, we have welded multiple vertical lines and horizontal lines crossed into a lattice shape by factory production that facilitates ensuring high quality, and carried the integrated welded rebar network to the construction site, depending on the installation location. Reinforcement work in which a number of welded rebar nets are arranged and the welded rebar nets that are arranged adjacent to each other are fastened together with binding wires, making it difficult to secure skilled workers It improves workability on site and is effective in stabilizing the quality of reinforced concrete.
[0005]
Compared to the arrangement of round bars and deformed bars one by one, the welded reinforcing bar network can be installed much more accurately and quickly, and each crossing part is firmly welded, so it has high strength. It has an excellent point that it can be secured, and it is easy to prevent the disturbance of the bar arrangement during the work of electricity, water supply and other wiring pipes and concrete placement work after the bar arrangement work. When multiple sheets are connected due to the high strength of the reinforcing bar network, stress concentrates on the connected parts, but the tightness of the joints varies depending on the individual operator, and careless connection is required. If it does, there exists a possibility that the intensity | strength of placement concrete may be reduced significantly.
[0006]
As an improvement of the connection structure of the welded rebar network, as in the welded wire mesh disclosed in Japanese Patent Laid-Open No. 62-84844, a previously formed connecting metal fitting is used instead of a conventional binding wire. Rings are formed at each end of the welded wire mesh disclosed in the welded wire mesh structure disclosed in Japanese Utility Model Publication No. 64-26477, and the adjacent welded wire meshes are concentric. Have already been developed to connect adjacent welded wire meshes by inserting a common connecting bone line through these ring parts, but they are all separate parts for connection outside the welded rebar network. Therefore, the number of parts is increased, and the arrangement work becomes complicated.
[0007]
As described above, the present invention has an advantage that the accurate and stable reinforcement structure can be ensured as described above, and the range of use is gradually expanded, but in the reinforced concrete excellent in compressive strength. In a structure where the welded rebar network that bears the tensile strength relies on a binding wire for the connection part of each other, higher strength cannot be secured, and a separate part is provided exclusively for the connection of the welded rebar networks. If there is a problem of increasing the number of parts and complicating parts management and bar arrangement work, there is a problem that there is no way to solve these problems, so the development is very fast As a result of starting research and repeating trial and error over many years and many trial manufactures and experiments, we finally succeeded in realizing a welded rebar network consisting of a novel structure. Figure With examples representative of the present invention shown in, and be described in detail the structure.
[0008]
[Structure of the invention]
As clearly understood from the embodiments representing the present invention shown in the drawings, the welded rebar network of the present invention basically has the following configuration.
That is, a plurality of vertical lines arranged in parallel at a predetermined interval and a substantially rectangular grid-like arrangement so that a large number of meshes of a predetermined size are formed on one side of a plane formed by the arrangement of the vertical lines. A plurality of horizontal lines integrated with crossing points, and one end of several vertical lines arranged at substantially equal intervals and / or several horizontal lines arranged at substantially equal intervals. One end is bent by 90 to 180 ° in the direction of overlapping when connecting, so as to form a connecting collar portion having a substantially L shape or a substantially “one” shape, The horizontal lines forming the connecting collars in the plurality of horizontal lines are separated from the equally spaced horizontal lines with a gap corresponding to one horizontal line, and similarly the connecting collars. is formed with proximity while horizontal lines were the same posture, it is integrated in the same manner in a parallel-like arrangement, two identical structures It is possible to prevent movement in the longitudinal axis direction in both cases when the connecting collar of one horizontal line is connected to the other predetermined vertical line and the two pieces are connected. It is a welded rebar net whose composition is the gist.
[0009]
When the welded rebar network having this basic configuration is shown as having a more specific configuration, a plurality of vertical lines arranged in parallel at predetermined intervals and a plane formed by the arrangement of these vertical lines Several vertical lines having a plurality of horizontal lines integrated with each other as a substantially rectangular lattice arrangement so as to form a large number of meshes of a predetermined size on one side, and having a substantially equal spacing. And / or one end of several horizontal lines arranged at approximately equal intervals is bent by 90 to 180 ° in the overlapping direction at the time of connection, and is substantially L-shaped. Alternatively, a connecting hook part having a substantially “T” shape is formed, and the connecting hook part is directly connected between the horizontal lines located at appropriate positions on the other end of the vertical line in parallel with the horizontal line. Reinforcement horizontal line that can be connected adjacent to the horizontal line that can be connected, or the horizontal line that the connecting collar hooks. One or both of these are integrated at the intersection with each vertical line, and between the vertical lines located at appropriate positions on the other end side of the horizontal line, the connecting collar is arranged in parallel with these vertical lines. Either one or both of the connecting vertical lines that can be directly engaged or the reinforcing vertical lines that reinforce and arrange adjacent to the vertical lines on which the connecting hooks hang are integrated at the crossing points with each horizontal line. On the other hand, in the horizontal line that forms the connecting collar in the plurality of horizontal lines , with a gap for one horizontal line, separate from the equally spaced horizontal lines, Similarly, the horizontal lines forming the connecting hooks are similarly integrated in a close and parallel arrangement with the same posture, and the connecting hooks on one horizontal line of two of the same structure are connected to the other predetermined line. Connected to the vertical line of the two, when the two are connected to each other in the direction of the vertical axis It can be said to be welded rebar network which shall be prevented movement.
[0010]
If the welded rebar net of the present invention is expressed by another expression, a plurality of vertical lines arranged in parallel at predetermined intervals, and a predetermined dimension on one surface side of a plane formed by the arrangement of the vertical lines. A plurality of horizontal lines integrated with each other as a substantially rectangular lattice-like arrangement so as to form a large number of meshes, and one protruding end of several horizontal lines that are arranged substantially equidistantly, While connecting, it is bent 90 to 180 degrees in the overlapping direction to form a substantially L-shaped or substantially “one” -shaped connecting collar, In the horizontal line that forms the connecting collar in the horizontal line , a gap for one horizontal line is placed, and it is separate from the equally spaced horizontal lines, and the connecting collar is similarly formed. there horizontal lines close while the same posture, is integrated in the same manner in a parallel-like arrangement, one of two identical structures A configuration in which the connecting collar of one horizontal line is connected to a predetermined vertical line on the other side to prevent movement in the longitudinal axis direction when both of them are connected. It can be said that it is a welded rebar network made of
[0011]
If this is shown in a more specific configuration, a plurality of vertical lines arranged in parallel at predetermined intervals and a number of meshes of predetermined dimensions are formed on one side of the plane formed by the arrangement of these vertical lines. A plurality of horizontal lines that are integrated with each other as a substantially rectangular lattice arrangement, and at least one of the protruding ends of the horizontal lines that are arranged at approximately equal intervals is connected at the time of connection. A vertical line located at an appropriate position on the other end side of the horizontal line while forming a connecting collar part of a substantially L shape or a substantially “T” shape by bending 90 ° to 180 ° toward the overlapping direction. In between, reinforcement that is arranged in parallel with these vertical lines and can be directly engaged with the connecting collar or the vertical line on which the connecting collar is attached is reinforced. One or both of the vertical lines for use are integrated at the crossing point with each horizontal line, while The horizontal line is formed a connecting hook portion in Luo plurality of horizontal lines, with a gap of the horizontal one minute, separately from the horizontal line thereof equally spaced, similarly connecting hook portion The horizontal lines that are formed in the same posture are integrated in close proximity and in a parallel arrangement, and the connecting collars of one horizontal line of two sheets of the same structure are connected to the other predetermined vertical line. Thus, it can be said that this is a welded reinforcing bar network that can prevent movement in the direction of the longitudinal axis when both of them are connected.
[0012]
A vertical line is a unit that integrates with a plurality of horizontal lines arranged in a cross shape to ensure a continuous strength in the length direction of the welded rebar network. It must be formed from deformed reinforcing bars, etc., and several ends with appropriate equal intervals should be bent to form connecting flanges, and the remaining ends should be straight In order to ensure interchangeability and workability, it is desirable to unify them into general standard dimensions. Specifically, the wire diameter should be around 3.2 to 6 mm. It is desirable that the length is set to about 2 to 4 m, but it can be appropriately set according to the scale of the building.
[0013]
The horizontal lines are integrated with a plurality of vertical lines arranged in a cross shape to ensure the continuous strength in the width direction of the welded rebar network, and round bars or deformed bars that are seamless in the width direction. It is necessary to form a plurality of one ends, which are spaced at equal intervals as appropriate, to be bent as connecting flanges, and the remaining ends to be straight protruding ends. In order to ensure compatibility and workability, it is desirable to standardize the dimensions to general standards. Specifically, the wire diameter should be about 3.2 to 6 mm, and 1 to 2 m. It is desirable that the length is set to a certain length, but it can be set as appropriate according to the scale of the building, etc., as with the vertical line.
[0014]
The connecting hook part connects the edges of the welded rebar nets that are stacked adjacent to each other in a hooked manner, and in particular resists the tensile force in the direction of separating the welded rebar nets, thereby strengthening the connection state. The one end of several vertical lines or horizontal lines arranged at least at approximately equal intervals is superposed when the edges of the welded rebar networks are connected to each other. It must be bent approximately 90-180 ° in the direction and formed into a substantially L-shape or a substantially “T” shape, and if necessary, the vicinity of its tip exceeds 180 °. It is possible to form a drop-off preventing piece that is bent inwardly or pressed to increase the diameter, or bent in a convex shape toward the inner side.
[0015]
In addition, as shown in the examples described later, the connecting collar can be formed at one end of a horizontal line that coincides with the vertical line located on the outermost side of the welded rebar net. It can be formed on the protruding end of the horizontal line that extends one horizontal mesh or half the horizontal mesh from the line, and one horizontal mesh from the outermost vertical line to the inside of the welded rebar network Alternatively, it is also possible to form one end of the horizontal line in a shortened shape at the inner position where the dimension of the horizontal mesh half is formed, and to form it at an appropriate position inside the horizontal mesh. In addition, it is possible to have a structure in which the length of one vertical mesh or half the length of the vertical mesh is extended from the outermost horizontal line, or the same dimension is shortened to form the vertical line end inside the vertical mesh. .
[0016]
The connecting vertical line fulfills the function of allowing each connecting collar formed on the protruding end of the appropriate horizontal line of the welded rebar network to be connected between the vertical lines located at appropriate positions on the other end side of the horizontal line. However, a material that is the same as or substantially equivalent to the vertical line should be selected so as to ensure a strength sufficient to withstand the connection, and all the points that cross the horizontal line should be integrated.
[0017]
The reinforcing vertical line is arranged adjacent to the vertical line on which the connecting collar is hooked and functions to reinforce the surrounding area, and is formed in the same shape and dimensions as the vertical line. Should be arranged in parallel so as to be close to the vertical line where the hangs, and all the crossing points with the horizontal line should be integrated.
[0018]
The connecting horizontal line fulfills the function of allowing each connecting collar formed on the protruding end of the appropriate vertical line of the welded rebar network to be connected between the horizontal lines located at appropriate positions on the other end side of the vertical line. In order to ensure sufficient connection strength, a material that is the same as or substantially equivalent to the horizontal line should be selected, and all the points that cross the vertical line should be integrated.
[0019]
The reinforcing horizontal line is arranged adjacent to the horizontal line on which the connecting hook is hooked and functions to reinforce the hooked area. The reinforcing horizontal line is formed in the same shape and dimension as the horizontal line, and the connecting hook is hooked. It should be arranged in parallel so as to be close to the horizontal line, and all the intersections with the vertical line should be integrated.
In the following, the structure of the present invention will be described in detail together with an embodiment representative of the present invention shown in the drawings.
[0020]
【Example】
In the example shown in the schematic plan view of the welded rebar network in FIG. 1 and the schematic side view of the welded rebar network in FIG. 2, a plurality of vertical lines made of straight steel wires are separated at a predetermined interval. A plurality of horizontal lines made of straight iron wires are arranged in parallel on one side of the plane formed by the arrangement of these vertical lines, and the crossing points are arranged in a substantially rectangular lattice pattern so as to form a large number of meshes of a predetermined size. Are integrated by electric resistance welding, and the horizontal line protruding ends at appropriate intervals are bent approximately 180 ° in the direction of overlapping when installed on the construction site. 1 shows a typical embodiment of a welded reinforcing bar network included in the present invention, which has a basic configuration in which a connecting bridging portion is formed.
[0021]
The welded rebar net 1 has a plurality of vertical lines 2, 2,... Made of round steel having a diameter of 6 mm and a length of 2 m arranged in parallel at intervals of 200 mm, and a plurality of these arranged in parallel. A plurality of horizontal lines 3, 3,... Made of round steel with a diameter of 6 mm and a length of 1 m are formed on one side of the plane formed by the vertical lines 2, 2,. Are arranged in parallel with each other at intervals of 200 mm so that the ends of the vertical lines 2, 2,... And the horizontal lines 3, 3,. It is assumed that two horizontal lines 3 and 3 are arranged in close proximity and in parallel so that a gap corresponding to one horizontal line 3 is formed at each of the three places and the next three lines. All of the crossing points of 2, 2,... And the horizontal lines 3, 3,... Are integrated by electric resistance welding, The horizontal lines 3 and 3 arranged in a row and the one protruding side protruding ends of the central one horizontal line 3 among the three horizontal lines 3, 3 and 3 arranged therebetween are vertical lines located on the outermost side 2 are bent by about 180 ° so as to be arranged on the inner side, and the connecting collars 4, 4,.
[0022]
In such a welded rebar network 1, as shown in the schematic plan view of the welded rebar network in FIG. 5 and the schematic side view of the welded rebar network in FIG. One reinforcing vertical 6 mm in diameter and 2 m in length at a position 100 mm away from both the vertical lines 2 and 2 on the opposite end to the connecting flanges 4, 4,. The wire 21 may be integrally coupled by electric resistance welding so as to be parallel to the vertical lines 2 and 2.
[0023]
In addition, the welded rebar network 1 includes horizontal lines 3, 3,... As shown in the schematic plan view of the welded rebar network in FIG. 9 and the schematic side view of the welded rebar network in FIG. 150 mm from the second vertical line 2 from the end, between the second and third vertical lines 2 and 2 at the end opposite to the end of the connecting collars 4, 4,. The connecting vertical line 22 having a diameter of 6 mm and a length of 2 m is integrally formed by electric resistance welding so as to be parallel to the vertical lines 2 and 2 at a position 50 mm from the third vertical line 2. It can also be combined.
[0024]
Furthermore, as shown in the side view of the connecting collar shown in FIG. 13, the connecting collar 4 is compressed and deformed into a flat shape by plus processing from the side in the vicinity of the tip. A drop-off prevention piece 41 that narrows the gap width of the tip end portion or a drop-off prevention piece 41 that is bent into a convex shape as shown in the side view of the connecting collar shown in FIG. In addition, as shown on the side surface of the connecting collar portion in FIG. 15, it is assumed that a drop-off prevention piece 41 is formed by bending the tip end of the connecting collar portion 4 inward beyond 180 °. it can.
[0025]
[Action]
If the welded rebar network 1 of the present invention having the configuration as described above is structured as shown in FIGS. 1 and 2, the plan view of the connected state of the welded rebar network of FIG. 3 and the welded rebar network of FIG. As shown in the side view of the connected state, the two connecting reinforcing bar nets 1, 1 having the same structure are connected to one connecting flange part 4, 4,. A horizontal line that engages and is connected to the vertical line 2 located on the most end side of the side where the connecting collars 4, 4,. The connecting operation is performed to prevent movement in the direction of two vertical axes by fitting either one of horizontal lines 3 and 3 spaced apart by one line between 3 and 3 in the same manner as the other. Or the vertical lines 2, 2,... And the horizontal lines 3, 3,... The place in the place, it is possible to those Tightened with tie wire, not shown.
[0026]
Moreover, if it is set as the structure which provided the vertical line 21 for reinforcement like FIG.5 and FIG.6, the top view of the connection state of the welded rebar network of FIG. 7, and the side view of the connection state of the welded rebar network of FIG. As shown in FIG. 1, the connecting flanges 4, 4,... Of the two welded reinforcing bar networks 1, 1 having the same structure are connected to the connecting flange parts 4, 4,. If it engages with the vertical line 2 on the most end side opposite to ...... and is connected, the reinforcing vertical line 21 disposed in the vicinity thereof connects the connecting collars 4, 4,. It is possible to reinforce the combined vertical line 2 and the surrounding horizontal lines 3, 3,... To further strengthen the connection strength between the two welded rebar networks 1, 1.
[0027]
As shown in FIGS. 9 and 10, if the structure is provided with the connecting vertical lines 22, the plan view of the welded rebar network in FIG. 11 and the connected state of the welded rebar network in FIG. As shown in the side view, one of the connecting flanges 4, 4,... Of the two welded rebar networks 1, 1 having the same structure is connected to the connecting flange 4, 4. From the endmost vertical line 2 on the opposite side to 4,..., Engage and connect with a connecting vertical line 22 provided between the second vertical line 2 and the third vertical line 2. If this is the case, the horizontal lines 3, 3,... Where the connecting vertical lines 22 are joined, and the adjacent vertical lines 2, 2,. It will be secured. Further, the welded reinforcing bar network 1 engaged with the connecting flanges 4, 4,..., The connecting vertical line 22 of the other welded reinforcing bar network 1, and the horizontal lines 3, 3,. If the appropriate places such as 2, 2,... Are tied together by a binding wire, it is possible to further strengthen the connection between the welded rebar networks 1 and 1.
[0028]
Moreover, if each drop-off prevention piece 41 formed in an appropriate shape is formed in the vicinity of the tip of the connecting collar 4 as shown in FIGS. 13 to 15, the vertical line 2 of each connecting collar 4 or the connection The connection to the vertical line 22 can be made more reliable to prevent inadvertent dropout, and it is possible to eliminate the need for binding with a binding line.
[0029]
【effect】
As described above, according to the welded rebar network of the present invention, it can be mass-produced precisely and efficiently by factory production, and the reinforcement work at the construction site can be efficiently performed by forming the connecting hook part. In addition, it is possible to secure a strong connection structure without requiring skill, and the construction supervisor can check the connection status of each welded rebar network after the reinforcement work is completed. Can be completed in a simple manner, combining conventional round steel bars and deformed rebars on site, and tying them together with binding wires, or connecting the welded rebar nets with separate parts dedicated to the connection. Compared with the bar arrangement work etc., the outstanding feature that it is possible to realize the placement of reinforced concrete that is remarkably efficient and of high quality is obtained.
[0030]
In particular, the welded rebar network described in the embodiment is connected between the two horizontal lines 3 and 3 arranged close to each other so as to form one gap in FIGS. 3 and 4 in addition to the above-described features. Similarly, if one of the horizontal lines 3 and 3 arranged in close proximity to each other is connected so as to be fitted, it can be easily fixed so as not to move in the direction of the two vertical axes. .
[0031]
Further, as shown in FIGS. 7 and 8, by providing the reinforcing vertical line 21, the connecting flanges 4, 4,... Of the welded reinforcing bar network 1 to be connected to the vertical line 2 adjacent thereto. Can be secured high connection strength, can prevent deformation and breakage in the vicinity of the connection portion of the welded rebar network 1, and as shown in FIG. 9 and FIG. The second horizontal mesh located at the end of the horizontal line 3, 3,... Opposite to the side where the connecting collars 4, 4,. Assuming that a connecting vertical line 22 is provided in the vicinity of the vertical line 2, as shown in FIGS. 11 and 12, the connecting flanges 4, 4,... ... Able to be firmly connected, and a state in which approximately one row of horizontal meshes on the end side of the welded rebar nets 1 and 1 to be connected are overlapped with each other It is possible to connect, once with Tightened with binding wire a manner plurality of locations, and which can be secured much higher coupling strength.
[0032]
And as shown in FIGS. 13-15, if the drop-off prevention piece 41 of various shapes was formed in the front-end | tip part of each connection collar part 4, it will become fitting without using a binding wire. By simply connecting, the reinforcing bar nets 1 and 1 can be connected easily and reliably, and the labor burden of the bar arrangement work can be further reduced.
[0033]
As described above, the welded rebar network of the present invention makes it possible to achieve the intended purpose by virtue of its novel configuration, and is easy to manufacture, and is easier to install than conventional welded rebar networks. The efficiency can be greatly improved, so that it can be made much more economical and accurate and reliable reinforcement can be applied. Separate parts for connecting welded rebar networks It is possible to reliably reduce the construction cost and shorten the construction period, and is highly regarded in the construction industry, which is required to respond to the decrease in skilled workers and to reduce costs, and is widely used. It is expected to be used and spread.
[Brief description of the drawings]
The drawings show some typical embodiments embodying the technical idea of the welded rebar network of the present invention.
FIG. 1 is a plan view schematically showing the structure of a welded rebar network.
FIG. 2 is a side view showing a schematic structure of a welded rebar network.
FIG. 3 is a plan view showing a connection structure between welded rebar nets.
FIG. 4 is a side view showing a connection structure between welded rebar nets.
FIG. 5 is a plan view schematically showing the structure of a welded rebar net provided with reinforcing vertical lines.
FIG. 6 is a side view showing a schematic structure of a welded reinforcing bar network provided with reinforcing vertical lines.
FIG. 7 is a plan view showing a connection structure of welded rebar nets provided with reinforcing vertical lines.
FIG. 8 is a side view showing a connection structure between welded rebar nets provided with reinforcing vertical lines.
FIG. 9 is a plan view schematically showing the structure of a welded rebar net provided with a connecting vertical line.
FIG. 10 is a side view showing a schematic structure of a welded reinforcing bar network provided with a connecting vertical line.
FIG. 11 is a plan view showing a connection structure of welded rebar nets provided with a connecting vertical line.
FIG. 12 is a side view showing a connection structure between welded rebar nets provided with a connecting vertical line.
FIG. 13 is a side view showing a drop-off prevention piece formed by pressing.
FIG. 14 is a side view showing a drop-off prevention piece formed by bending into a convex shape.
FIG. 15 is a side view showing a drop-off prevention piece formed by bending inward.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Welded rebar net 2 Vertical line 21 Same reinforcing vertical line 22 Same connecting vertical line 3 Horizontal line 4 Connecting collar 41 Same drop prevention piece

Claims

所定間隔を隔てて平行状に配列した複数本の縦線と、これら縦線の配列が形成する平面の一面側に、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を一体化した複数本の横線とを有し、略等間隔配置となる幾数本かの縦線の一方端、および／または、略等間隔配置となる幾数本かの横線の一方端を、連結の際に重ね合わせ状となる方向に向けて９０ないし１８０゜折曲して略Ｌ型状あるいは略「つ」の字状の連結用鈎部を形成するようにする一方、それら複数本の横線の中の連結用鈎部を形成してある横線には、当該横線一本分の間隙を置いて、それら等間隔配置の横線とは別体で、同様に連結用鈎部を形成してある横線が同様の姿勢にしたまま近接、平行状配置で同様に一体化され、同一構造の二枚のものの一方の横線の連結用鈎部を他方の所定の縦線に連結してそれら二枚のものが連結状とされたときの双方における縦線軸心方向への移動を阻止し得るものとしたことを特徴とする溶接鉄筋網。A plurality of vertical lines arranged in parallel at predetermined intervals, and crossing points as a substantially rectangular lattice arrangement so that a large number of meshes of a predetermined size are formed on one side of a plane formed by the arrangement of the vertical lines. One end of several vertical lines that have a plurality of horizontal lines integrated with each other and are arranged at substantially equal intervals, and / or one end of several horizontal lines that are arranged at approximately equal intervals Are bent by 90 to 180 ° in the direction of overlapping when they are connected to form a connecting collar portion having a substantially L shape or a substantially “one” shape, and a plurality of them. The horizontal line that forms the connecting collar in the horizontal line of the book is separated from the equally spaced horizontal lines with a gap corresponding to one horizontal line, and the connecting collar is formed in the same manner. to Aru proximity while horizontal lines were the same posture, is integrated in the same manner in a parallel-like arrangement, one of two identical structures The connecting collar of one horizontal line is connected to the other predetermined vertical line, and when the two pieces are connected, the movement in the vertical axis direction can be prevented. Welded rebar network characterized by

所定間隔を隔てて平行状に配列した複数本の縦線と、これら縦線の配列が形成する平面の一面側に、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を一体化した複数本の横線とを有し、略等間隔配置となる幾数本かの縦線の一方端、および／または、略等間隔配置となる幾数本かの横線の一方端を、連結の際に重ね合わせ状となる方向に向けて９０ないし１８０゜折曲して略Ｌ型状あるいは略「つ」の字状の連結用鈎部を形成した上、縦線の他方端側適所に位置する横線間に、これら横線と平行状に配置されて連結用鈎部が直接的に係合可能な連結用横線、もしくは連結用鈎部が掛着する横線に隣接配置して補強する補強用横線の何れか一方もしくは双方を各縦線との交叉箇所で一体化すると共に、横線の他方端側適所に位置する縦線間にも、これら縦線と平行状に配置されて連結用鈎部が直接的に係合可能な連結用縦線、もしくは連結用鈎部が掛着する縦線に隣接配置して補強する補強用縦線の何れか一方もしくは双方を各横線との交叉箇所で一体化するようにする一方、それら複数本の横線の中の連結用鈎部を形成してある横線には、当該横線一本分の間隙を置いて、それら等間隔配置の横線とは別体で、同様に連結用鈎部を形成してある横線が同様の姿勢にしたまま近接、平行状配置で同様に一体化され、同一構造の二枚のものの一方の横線の連結用鈎部を他方の所定の縦線に連結してそれら二枚のものが連結状とされたときの双方における縦線軸心方向への移動を阻止し得るものとしたことを特徴とする溶接鉄筋網。A plurality of vertical lines arranged in parallel at predetermined intervals, and crossing points as a substantially rectangular lattice arrangement so that a large number of meshes of a predetermined size are formed on one side of a plane formed by the arrangement of the vertical lines. One end of several vertical lines that have a plurality of horizontal lines integrated with each other and are arranged at substantially equal intervals, and / or one end of several horizontal lines that are arranged at approximately equal intervals Is bent 90 to 180 ° in the direction of overlapping when connecting, to form a connecting collar portion of a substantially L shape or a substantially “T” shape, and the other end of the vertical line Between the horizontal lines located at the right side, it is arranged in parallel with these horizontal lines, and it is arranged adjacent to the connecting horizontal line that can be directly engaged with the connecting collar or the horizontal line on which the connecting collar hooks. Either one or both of the reinforcing horizontal lines to be integrated at the intersection with each vertical line, Also between the vertical lines located at appropriate positions on the end side, the vertical lines for connection that can be directly engaged with the connecting hooks by being arranged parallel to these vertical lines, or the vertical lines on which the connecting hooks are engaged. One or both of the reinforcing vertical lines to be disposed adjacent to each other are integrated at the crossing points with the horizontal lines, while connecting flanges are formed in the plurality of horizontal lines. The horizontal line is separated from the equally spaced horizontal lines with a gap corresponding to one horizontal line, and the horizontal lines that similarly form the connecting collars are in close proximity and in parallel with the same posture. In the same way in the arrangement, the two connecting members of the same structure are connected to one of the horizontal lines with the predetermined vertical line of the other, and the two members are connected in the vertical direction. A welded rebar network characterized by being capable of preventing movement in the direction of the line axis.

所定間隔を隔てて平行状に配列した複数本の縦線と、これら縦線の配列が形成する平面の一面側に、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を一体化した複数本の横線とを有し、略等間隔配置となる幾数本かの横線の一方の突出端を、連結の際に重ね合わせ状となる方向に向けて９０ないし１８０゜折曲して略Ｌ型状あるいは略「つ」の字状の連結用鈎部を形成するようにする一方、それら複数本の横線の中の連結用鈎部を形成してある横線には、当該横線一本分の間隙を置いて、それら等間隔配置の横線とは別体で、同様に連結用鈎部を形成してある横線が同様の姿勢にしたまま近接、平行状配置で同様に一体化され、同一構造の二枚のものの一方の横線の連結用鈎部を他方の所定の縦線に連結してそれら二枚のものが連結状とされたときの双方における縦線軸心方向への移動を阻止し得るものとしたことを溶接鉄筋網。A plurality of vertical lines arranged in parallel at predetermined intervals, and crossing points as a substantially rectangular lattice arrangement so that a large number of meshes of a predetermined size are formed on one side of a plane formed by the arrangement of the vertical lines. A plurality of horizontal lines that are integrated with each other, and one protruding end of several horizontal lines that are arranged at substantially equal intervals is 90 to 180 ° in the direction of overlapping when connected. While being bent so as to form a connecting collar portion having a substantially L shape or a substantially “T” shape, the horizontal line forming the connecting collar portion among the plurality of horizontal lines is, Separately from the equally spaced horizontal lines with a gap corresponding to one horizontal line, the horizontal lines forming the connecting collars in the same posture are similarly arranged in a close and parallel arrangement. Connect the connecting collar of one horizontal line of two pieces of the same structure to the other predetermined vertical line Welded reinforcement net that those two these are assumed to be prevented from moving to the vertical line axis direction in both when the connecting shape.

所定間隔を隔てて平行状に配列した複数本の縦線と、これら縦線の配列が形成する平面の一面側に、所定寸法の網目を多数形成するよう略矩形格子状配置として互いの交叉箇所同士を一体化した複数本の横線とを有し、少なくとも略等間隔配置となる幾数本かの横線の一方の突出端を、連結の際に重ね合わせ状となる方向に向けて９０ないし１８０゜折曲して略Ｌ型状あるいは略「つ」の字状の連結用鈎部を形成する一方、横線の他方端側適所に位置する縦線間には、これら縦線と平行状に配置されて連結用鈎部が直接的に係合可能な連結用縦線、もしくは連結用鈎部が掛着する縦線に隣接配置して補強する補強用縦線の何れか一方もしくは双方を各横線との交叉箇所で一体化するようにする一方、それら複数本の横線の中の連結用鈎部を形成してある横線には、当該横線一本分の間隙を置いて、それら等間隔配置の横線とは別体で、同様に連結用鈎部を形成してある横線が同様の姿勢にしたまま近接、平行状配置で同様に一体化され、同一構造の二枚のものの一方の横線の連結用鈎部を他方の所定の縦線に連結してそれら二枚のものが連結状とされたときの双方における縦線軸心方向への移動を阻止し得るものとしたことを特徴とする溶接鉄筋網。A plurality of vertical lines arranged in parallel at predetermined intervals, and crossing points as a substantially rectangular lattice arrangement so that a large number of meshes of a predetermined size are formed on one side of a plane formed by the arrangement of the vertical lines. 90 to 180 with a plurality of horizontal lines integrated with each other and at least one of the protruding ends of several horizontal lines arranged at approximately equal intervals in a direction of overlapping when connected.折 Bent to form a connecting collar of approximately L shape or approximately “T” shape, but between the vertical lines located at the other end of the horizontal line, it is arranged in parallel with these vertical lines Either the connecting vertical line that can be directly engaged by the connecting collar or the vertical line that is reinforced adjacent to the vertical line on which the connecting collar hooks is reinforced. crossover while such integrated at points, form the connecting hook portion among those plurality of horizontal lines with The horizontal line you have, with a gap of the horizontal one minute, proximity while separately from the horizontal line thereof equally spaced, are formed in the same manner as connecting hook portion horizontal lines were the same posture In the same arrangement in a parallel arrangement, when the connecting collar of one horizontal line of two pieces of the same structure is connected to the other predetermined vertical line, the two pieces are connected A welded reinforcing bar network characterized in that movement in the longitudinal axis direction in both sides can be prevented.

連結用鈎部が、掛着対象となる縦線もしくは横線に掛着可能な曲率を確保して略１８０゜折曲してなるものとされた上、その先端部付近を１８０゜を越えて内側に折曲するか、プレスして直径を拡大するか、または、内側へ向けて凸山状に折曲するか等の脱落防止片を形成してなるものとした、請求項１ないし４何れか記載の溶接鉄筋網。 The connecting collar is bent by approximately 180 ° to ensure the curvature that can be hooked to the vertical or horizontal line to be hooked, and the tip is near 180 ° inside. 5. Any one of claims 1 to 4, wherein a drop-off preventing piece is formed, such as bending to a curved shape, pressing to enlarge the diameter, or bending to a convex shape toward the inside. The welded rebar net described.