JP4674834B2

JP4674834B2 - Seismic slit material

Info

Publication number: JP4674834B2
Application number: JP2000391675A
Authority: JP
Inventors: 義和廣川; 隆史海野; 正浩伊藤; 輝子逸見; 正倉島
Original assignee: 岡部株式会社; ドラーフタイト工業株式会社
Priority date: 2000-12-22
Filing date: 2000-12-22
Publication date: 2011-04-20
Anticipated expiration: 2020-12-22
Also published as: JP2002194919A

Description

【０００１】
【発明の属する技術分野】
本発明は、コンクリート建築物の柱部又は梁部と壁部との接合部相互間に設置される耐震スリット材に関する。特に、コンクリートの打設圧力による耐震スリット材の変形や離脱を防止するための補強技術に関する。
【０００２】
【従来の技術】
鉄筋コンクリートないし鉄骨鉄筋コンクリート等のコンクリート建築物においては、腰壁、垂れ壁、袖壁等の壁部とこれに連なる柱部や梁部との接合部相互間に耐震スリット材を設置して、その耐震スリット材の変形機能により、壁部と柱部や梁部との間の力の伝達を遮断することによって、地震による柱部や梁部のせん断破壊や脆性破壊を回避する技術手段が従来から広く知られている。この種の耐震スリット材の設置作業においては、コンクリートの打設を片側（主に柱側）を先行して打設するのが一般的である。その結果、打設時には、スリット材の片面にコンクリートによる大きな側圧が加わり、スリット材本体等が変形したり離脱してしまうといった問題があった。このため、耐震スリット材の設置作業に関し、スリット材本体の片面に壁面方向に沿って突出する支持腕を設け、この支持腕の先端を型枠間に差渡したセパレーターに取付けて補強する方法（実開昭５９−１７５５４５号公報）や、スリット材本体の片面又は両面に板状体を貼着し、型枠に取付けた取付片に係合させる補強方法（特開平８−９３２６６号公報）などが開示されている。
【０００３】
【発明が解決しようとする課題】
しかしながら、前者の従来技術は、支持腕の構成が複雑でコスト高となる上、支持腕をセパレーターに取付ける作業が煩雑なものになるといった技術的な難点を抱えていた。また、後者の従来技術は、スリット材本体の全面に硬質の板状体を貼着する必要があるため、コスト高を招くだけでなく、壁内に壁面と平行にツナギ筋を配筋する際には、前記板状体を貫通させるという厄介な作業が加わるため、作業性を大きく低下させる要因になっていた。
【０００４】
本発明は、以上のような従来技術の問題点を解決するために発明したものであり、簡単な構成によりコンクリートの打設圧力に十分対抗することができ、しかも型枠に対する設置作業の作業性を改善し得る使い勝手のよい耐震スリット材を提供することを目的とするものである。
【０００５】
【課題を解決するための手段】
本発明は、前記課題を解決するため、前記耐震スリット材を構成するスリット材本体を両側から係合して支持するそれぞれの支持部材に係止部を形成するとともに、それらの係止部に補強部材を係合させて前記支持部材相互間を連結することにより、スリット材本体の反対面に作用するコンクリートの側圧に対して補強するという技術手段を採用した（請求項１）。前記補強部材は、両端部に前記支持部材の係止部に係合し得る係合部を有する略Ｃ字状の部材から構成することができる（請求項１）。前記補強部材の中間部に、ネジ結合を介して前記スリット材本体の外面に当接し得るように当接部材を設けることができる（請求項２、３）。前記補強部材の中間部に、前記スリット材本体の外面に当接し得るように突出部を形成するようにしてもよい（請求項４）。前記補強部材の両端部に前記支持部材の係止部に係合し得る係合部を形成するとともに、その補強部材の中間部にも適宜数の係合部を形成してもよい（請求項５）。また、前記補強部材は、前記支持部材の係止部に係合し得る係合部材と、それらの係合部材相互間を連結する連結部材から構成することも可能である（請求項６）。さらに、前記補強部材の適宜部分に止水材を設けて、該補強部材の外表面を伝わって入る水分の浸入を遮断するように構成してもよい。
【０００６】
【発明の実施の形態】
本発明に係る耐震スリット材は、柱部と壁部との間に設置される垂直スリット材や、梁部と壁部との間に設置される水平スリット材などとして広く適用することが可能である。耐震スリット材を構成するスリット材本体としては、発泡ポリエチレンや発泡ウレタンなど、従来から知られている適宜の材質にて形成されたものが使用可能である。そのスリット材本体を支持する支持部材は、柱部や梁部と壁部との接合部相互間のスリットの長手方向に沿って両側からスリット材本体に係合して支持するように設置されるものであり、スリットの長さに応じて切断して使用するように長尺に形成されている。支持部材の材質に関しては、強度、耐久性、加工性などから軟質ポリ塩化ビニルや硬質ポリ塩化ビニルあるいはそれらの複合材などが好適であり、さらにその適所に止水材として例えば軟質の水膨潤性ポリ塩化ビニル等を共押出加工などにより一体成形するようにしてもよい。また、支持部材相互間を連結して補強する補強部材の材質に関しては、それらの支持部材に形成した係止部に対して変形させながら係合させる関係から、弾性変形可能なバネ鋼やりん青銅などが好適であるが、変形後に元の形状に復元可能であって十分な強度を有するものであれば、合成樹脂等から構成することも可能である。なお、補強部材は、支持部材の片面あるいは両面に設置する。片面に設置する場合には、初めに実施されるコンクリートの打設に対して反対側に位置する面に設置する。また、補強部材は、支持部材の全面に対してではなく、適当な間隔をあけて設置する。
【０００７】
本発明に係る支持部材の具体的形状に関しては、前記補強部材が係合し得る係止部を備えたものであれば、どのような形状のものでもよい。また、その係止部自体の具体的形状に関しても、係止部の端部を鉤状に曲げたものや、係合状態を維持するように傾斜したものなどが可能である。他方、補強部材側の具体的形状に関しては、両端部に支持部材側の係止部に係合し得るフック状や切欠部などの係合部を形成した略Ｃ字状のものや、補強部材の中間部をスリット材本体の外面に当接し得るように突出した状態に形成したものなどが可能である。また、補強部材の中間部にネジ結合を介してスリット材本体の外面に当接し得るように当接部材を設けることも可能である。なお、補強部材の両端部にフック状や切欠部等の係合部を形成するとともに、その補強部材の中間部にも適宜数の係合部を形成しておき、支持部材側の係止部相互間の間隔に応じて、前記係合部を選択的に使用することにより対応できるように構成した形態も可能である。さらに、補強部材を、スリット材本体を両側から係合支持するそれぞれの支持部材の係止部に係合し得る係合部材と、それらの係合部材相互間を連結する連結部材から構成することも可能である。
【０００８】
【実施例】
以下、図面を用いて本発明の実施例に関して説明する。図１は本発明の第１実施例に係る耐震スリット材を型枠に設置した状態を示した斜視図であり、図２はその平面図である。図示のように、本実施例に係る耐震スリット材１は、スリット材本体２、該スリット材本体２を両側から係合支持する略コ字状断面を有する支持部材３，４及びそれらの支持部材３，４相互間に架設される補強部材５等から構成される。そして、耐震スリット材１を型枠６，７へ取付る場合には、本実施例では目地棒を兼ねた固定部材８，９を介して取付けられる。すなわち、前記支持部材３，４には、それらの固定部材８，９に係合し得るように係合片１０，１１がテーパ状に一体形成されており、型枠６，７に釘等により固定された固定部材８，９を係合片１０，１１の間に係合することにより、耐震スリット材１を型枠６，７へ取付けられるように構成している。
【０００９】
さらに、支持部材３，４の端部には、支持部材３，４自体の剛性の強化とともに、本発明の特徴である前記補強部材５の係止部を兼ねた補強係止片１２，１３が両側に略直角に広がるように一体形成されている。前記補強部材５は、図示のように、コンクリートが先に打設される側の反対側に位置する、例えば支持部材３，４の補強係止片１２，１２相互間に架設され、コンクリートの打設時にスリット材本体２の反対側の側面に作用する側圧による支持部材３，４相互間の拡がりを防止してスリット材本体２の変形や離脱を予防する。なお、補強部材５を支持部材３，４の補強係止片１２，１２相互間に架設する場合には、補強部材５の一方の端部を例えば支持部材３側の補強係止片１２に係合させた上、その状態で補強部材５を変形させながら他方の端部を相手側の支持部材４側の補強係止片１２に係合させることにより、簡便に架設することができる。因みに、以上のように係合片１０，１１及び補強係止片１２，１３を備えた支持部材３，４は、軟質ポリ塩化ビニルや硬質ポリ塩化ビニルあるいはそれらの軟質ポリ塩化ビニルと硬質ポリ塩化ビニルとの複合材等のポリ塩化ビニルにより同じ断面形状の連続した長尺ものとして一体形成され、必要な長さに応じて切断して使用し得るように構成される。
【００１０】
なお、図中、１４，１５はスリット材本体２の両面に貼付された熱膨張性等の耐火材である。また、図示のように、前記支持部材３の両側の外面には、止水片１６，１７が一体形成され、それらの端部に軟質の水膨潤性ポリ塩化ビニルからなる止水部１８，１９が共押出加工によって一体的に形成している。これらの止水片１６，１７と止水部１８，１９とは共押出加工によって一体的に形成したので、地震作用により支持部材３が変形しても止水部１８，１９が剥離することはない。しかも、止水部１８，１９を軟質の水膨潤性ポリ塩化ビニルから構成したので、支持部材３とコンクリート部との界面の隙間を伝わって外部から水分が浸入した場合には、その浸入した水分により止水部１８，１９が膨張して、それ自体の膨潤圧力によりコンクリート部に密着し、支持部材３とコンクリート部との界面に形成された前記隙間を塞いで水分の浸入路を的確に遮断する。
【００１１】
図３は本発明の第２実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。本実施例は、前記第１実施例の変形例であり、支持部材３をそのまま支持部材４として共用した場合を例示したものである。なお、本実施例では、図示のように、リング状の水膨潤性止水材２０を予め中間部に挿通した上、両端部を折曲げて形成した補強部材５を採用した場合を例示した。本実施例によれば、水膨潤性止水材２０により、補強部材５の周面とコンクリート部との界面部分の隙間を伝わって入る水分の浸入を的確に遮断することができる。
【００１２】
図４は本発明の第３実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。本実施例は、前記第１実施例の変形例であり、支持部材２１，２２として異なる断面形状を採用した場合を例示したものである。なお、本実施例では、図示のように支持部材２１，２２の補強係止片２３，２４の中間部に凸条部２５，２６を形成し、補強係止片２３，２４の先端部に形成した屈曲係止部とそれらの凸条部２５，２６との間に形成される溝部に補強部材５の両端部が係止されるように構成している。
【００１３】
図５は補強部材に関する他の実施例を示した拡大部品図であり、図６はその補強部材を用いた本発明の第４実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。本実施例に係る補強部材２７は、図５に示したように、その中間部にネジ結合を介して前記スリット材本体２の外面に当接し得るように当接部材２８を設けた点で特徴を有する。すなわち、補強部材２７を構成する板部２９の中央部にバーリング加工等により雌ねじ部３０を形成し、その雌ねじ部３０に螺合するボルト３１及びその先端部に付設した当接部３２からなる当接部材２８を設けたものである。そして、図６に示したように、支持部材２１，２２相互間に架設する場合には、前述のように、補強部材２７を構成する板部２９の両端部を補強係止片２３の先端部に形成した屈曲係止部とそれらの凸条部２５，２６との間に形成される溝部に係合させた上、ボルト３１により当接部３２がスリット材本体２の表面に軽く当接するように締付け調整して架設が終了する。本実施例によれば、スリット材本体２の中央部が当接部材２８によって支持されるので、コンクリート打設時の側圧に対してスリット材本体２が更に補強される。
【００１４】
図７は本発明の第５実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。本実施例は、前記第４実施例の変形例であり、補強部材３３を構成する板部３４を変形の容易な材質から形成し、図示のように、支持部材２１，２２の補強係止片２３相互間に架設してボルト３５を締付けた場合に、補強係止片２３相互間の寸法に応じて板部３４が変形するように構成したものである。すなわち、本実施例は、この板部３４の変形によって補強係止片相互間の寸法の異なる場合にも適用できるようになり、壁厚に対する補強部材３３の融通性が拡大される点で特徴を有するものである。
【００１５】
図８は本発明の第６実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。本実施例は、図示のように、補強部材３６の中間部に、前記スリット材本体２の外面に当接し得るように突出部３７を形成したものである。すなわち、本実施例によれば、補強部材３６の装着状態においてスリット材本体２の中央部が突出部材３７によって支持されるので、コンクリート打設時の側圧に対してスリット材本体２が更に補強されることになる。
【００１６】
図９及び図１０は補強部材に関する変形例を例示したものであり、補強部材の両端部に支持部材の係止部に係合し得る係合部を形成するとともに、その中間部にも適宜数の係合部を形成したものである。これらの補強部材に関する変形例は、以上の実施例に適用できるものであり、前記係合部を選択使用することにより種々の壁厚に対して簡便に対応できるようになり、補強部材の壁厚に対する融通性が拡大される。図９に示した補強部材３８は、その補強部材３８を構成する板部３９の両端部に屈曲形成したフック状の係合部４０のほかに、位置をずらして前記板部３９の幅中央部に切起して同様のフック状からなる係合部４１を適宜数形成したものである。図１０に示した補強部材４２は、図示のように、その補強部材４２を構成する板部４３の両端部の側辺部から順次位置をずらしながら適宜数のフック状の係合部４４〜４６を形成したものである。
【００１７】
図１１は本発明の第７実施例に係る耐震スリット材を型枠に設置した状態を示した斜視図である。本実施例に係る補強部材４７は、図示のように、その補強部材４７を構成するコ字状に折曲げ形成した板部４８の上面部と下面部の双方に両端部から順次位置をずらしながら適宜数の切欠部４９，５０を形成したものである。以上のように、本実施例の場合には、板部４８をコ字状の折曲げ形成したことから、補強部材４７自体の剛性が強化される。また、切欠部４９，５０を選択して、例えば前記支持部材３，４の補強係止片１２相互間に端部から挿入するようにすれば、補強係止片１２相互間の寸法の異なる場合にも簡便に適応できるようになり、壁厚に対する融通性が拡大される。
【００１８】
図１２は本発明の第８実施例に係る耐震スリット材を型枠に設置した状態を示した斜視図である。本実施例は、以上の実施例で用いた補強部材とは形態が異なり、図示のように、補強部材５１を例えば前記支持部材３，４の補強係止片１２に係合し得るように形成した係合部材５２，５３と、それらの係合部材５２，５３相互間を連結する連結部材５４から構成した点で特徴を有するものである。すなわち、本実施例は、支持部材３，４の補強係止片１２に係合し得る形状に屈曲形成された別個の係合部材５２，５３をそれぞれ支持部材３，４の補強係止片１２に係合させた状態で、それらの係合部材５２，５３相互間を全ねじボルトからなる連結部材５４によりナット５５を介して締付固定することにより、スリット材本体２の反対面に作用するコンクリート打設時の側圧に対して支持部材３，４の支持強度を補強するものである。以上のように、本実施例に係る補強部材５１の場合には、係合部材５２，５３と、それらの係合部材５２，５３相互間を連結する連結部材５４とを別個に構成したので、補強係止片相互間の寸法の異なる場合にも容易に適応できるようになり、壁厚に対する融通性が大幅に拡大される。
【００１９】
図１３は本発明の第９実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。本実施例は、前記第８実施例の変形例であり、本実施例に係る補強部材５６は、例えば前記支持部材２１，２２の補強係止片２３に係合し得るように形成した係合部材５７，５８と、それらの係合部材５７，５８相互間を連結する連結部材５９から構成したものである。係合部材５７，５８は、図示のように、補強係止片２３を包むように屈曲形成され、その端部にはスリット材本体２の表面に当接する当接部６０，６１が形成されている。連結部材５９は、両端部に雄ねじが形成されておりナット６２，６３が螺合されている。しかして、本実施例に係る補強部材５６を前記支持部材２１，２２相互間に設置する場合には、それぞれの係合部材５７，５８を補強係止片２３に係合し、それらの係合部材５７，５８に形成された挿通孔に連結部材５９を挿通した上、ナット６２，６３により適度に締付けることにより行われる。この場合、ナット６２，６３による締付けにより、前記当接部６０，６１がスリット材本体２の表面に当接するので、スリット材本体２に対する補強効果が向上する。また、本実施例に係る補強部材５６の場合にも、係合部材５７，５８と、それらの係合部材５７，５８相互間を連結する連結部材５９とは別個に構成したので、補強係止片相互間の寸法の異なる場合にも容易に適応でき、壁厚に対する融通性が大幅に拡大される。
【００２０】
なお、前記第９実施例における連結部材５９に対して、図示のように、リング状の水膨潤性止水材６４を外嵌するようにすれば、その連結部材５９の周面とコンクリート部との界面部分の隙間を伝わって入る水分の浸入を的確に遮断することができ、止水性能を向上できる。その場合、さらに支持部材２１，２２の補強係止片２３，２４の端部にも、止水材として例えば軟質の水膨潤性ポリ塩化ビニル等を共押出加工などにより一体成形するようにすれば、更に止水性能が向上され、きわめて良好な耐震スリット材が得られる。また、前記第８実施例における連結部材５４にリング状の水膨潤性止水材６４を外嵌することも、止水性能を向上するうえできわめて有効である。
【００２１】
【発明の効果】
本発明によれば、次の効果を得ることができる。
（１）前記補強部材を用いてスリット材本体を両側から係合支持する支持部材相互間を連結支持するという技術手段を採用したので、簡単な構成によって支持部材のコンクリートの打設圧力に対する支持強度を補強することができ、打設時の側圧によるスリット材本体の変形や支持部材からの離脱を的確に防止することができる。
（２）補強部材側に形成したフック状や切欠部等からなる係合部を支持部材側に形成した係止部に係合することにより、ワンタッチで装着し得るように構成することも可能である。
（３）補強部材の中間部にスリット材本体の外面に当接し得る当接部材や、スリット材本体の外面に当接し得る突出部を形成すれば、スリット材本体の変形が防止されるので、コンクリートの打設圧力に対する対応能力を強化できる。
（４）補強部材に複数の係合部を形成すれば、その係合部を選択使用することにより、種々の壁厚に対して簡便に対応できる。
（５）補強部材を、支持部材の係止部に係合し得る係合部材と、それらの係合部材相互間を連結する連結部材から構成するようにすれば、連結部材の締付け長さを調整することにより、種々の壁厚に対して簡便に対応できる。
（６）補強部材の設置位置に関しては、適当な間隔をあけて自由に調整できるので、壁内のツナギ筋の配筋のためにスリット材本体を貫通させる場合には、補強部材との干渉を簡便に回避することができ、延いては前記配筋作業に関する作業性を向上できる。
【図面の簡単な説明】
【図１】本発明の第１実施例に係る耐震スリット材を型枠に設置した状態を示した斜視図である。
【図２】同実施例の平面図である。
【図３】本発明の第２実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。
【図４】本発明の第３実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。
【図５】補強部材に関する他の実施例を示した拡大部品図である。
【図６】本発明の第４実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。
【図７】本発明の第５実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。
【図８】本発明の第６実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。
【図９】補強部材に関する変形例を例示した斜視図である。
【図１０】補強部材に関する変形例を例示した斜視図である。
【図１１】本発明の第７実施例に係る耐震スリット材を型枠に設置した状態を示した斜視図である。
【図１２】本発明の第８実施例に係る耐震スリット材を型枠に設置した状態を示した斜視図である。
【図１３】本発明の第９実施例に係る耐震スリット材を型枠に設置した状態を示した平面図である。
【符号の説明】
１…耐震スリット材、２…スリット材本体、３，４…支持部材、５…補強部材、６，７…型枠、８，９…固定部材、１０，１１…係合片、１２，１３…補強係止片、１４，１５…耐火材、１６，１７…止水片、１８，１９…止水部、２０…水膨潤性止水材、２１，２２…支持部材、２３，２４…補強係止片、２５，２６…凸条部、２７…補強部材、２８…当接部材、２９…板部、３０…雌ねじ部、３１…ボルト、３２…当接部、３３…補強部材、３４…板部、３５…ボルト、３６…補強部材、３７…突出部、３８…補強部材、３９…板部、４０，４１…係合部、４２…補強部材、４３…板部、４４〜４６…係合部、４７…補強部材、４８…板部、４９，５０…切欠部、５１…補強部材、５２，５３…係合部材、５４…連結部材、５５…ナット、５６…補強部材、５７，５８…係合部材、５９…連結部材、６０，６１…当接部、６２，６３…ナット、６４…水膨潤性止水材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seismic slit material installed between joints between a column part or a beam part of a concrete building and a wall part. In particular, the present invention relates to a reinforcement technique for preventing deformation and detachment of an earthquake-resistant slit material due to concrete placing pressure.
[0002]
[Prior art]
In concrete buildings such as reinforced concrete or steel-framed reinforced concrete, an earthquake-resistant slit material is installed between the joints between the wall part such as the waist wall, the hanging wall, and the sleeve wall and the column part and beam part connected to it. Conventionally, there has been a wide range of technical means to avoid shear and brittle fractures of columns and beams caused by earthquakes by blocking the transmission of force between the wall and columns and beams by the deformation function of the slit material. Are known. In the installation work of this type of earthquake-resistant slit material, it is common to place concrete in advance on one side (mainly the column side). As a result, there has been a problem in that a large lateral pressure is applied to one side of the slit material due to the concrete during placement, and the slit material main body is deformed or detached. For this reason, with respect to the installation work of the earthquake-resistant slit material, a method is provided in which a support arm that protrudes along the wall surface direction is provided on one side of the slit material body, and the tip of the support arm is attached to a separator that is passed between the molds and reinforced. (Japanese Utility Model Laid-Open No. 59-175545) and a reinforcing method (Japanese Patent Laid-Open No. 8-93266) in which a plate-like body is attached to one or both sides of a slit material main body and engaged with a mounting piece attached to a mold. Is disclosed.
[0003]
[Problems to be solved by the invention]
However, the former prior art has technical difficulties in that the structure of the support arm is complicated and expensive, and the work of attaching the support arm to the separator becomes complicated. In the latter conventional technique, it is necessary to stick a hard plate-like body to the entire surface of the slit material body, which not only incurs high costs, but also when arranging the striped bars parallel to the wall surface in the wall. However, since a troublesome work of penetrating the plate-like body is added, the workability is greatly reduced.
[0004]
The present invention has been invented to solve the above-described problems of the prior art, and can easily counteract concrete placing pressure with a simple structure, and can be installed in a formwork. It is an object to provide an easy-to-use earthquake-resistant slit material that can improve the above.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention forms a locking portion on each support member that engages and supports the slit material body constituting the earthquake-resistant slit material from both sides, and reinforces the locking portions. The technical means of reinforcing against the side pressure of the concrete acting on the opposite surface of the slit material body by engaging the members and connecting the support members to each other was adopted (claim 1). The reinforcing member may be composed of a substantially C-shaped member having an engaging portion engageable with the engagement portion of the support member at both end portions (claim 1). An abutting member may be provided at an intermediate portion of the reinforcing member so as to be able to abut on the outer surface of the slit material main body through screw coupling (Claims 2 and 3). You may make it form a protrusion part in the intermediate part of the said reinforcement member so that it may contact | abut on the outer surface of the said slit material main body (Claim 4). Engaging portions that can be engaged with the engaging portions of the support member are formed at both ends of the reinforcing member, and an appropriate number of engaging portions may be formed at an intermediate portion of the reinforcing member. 5). Further, the reinforcing member can be constituted by an engaging member that can be engaged with a locking portion of the support member and a connecting member that connects the engaging members to each other (Claim 6). Furthermore, the appropriately portion of the reinforcing member provided water stopping material, but it may also be configured to block the entry of moisture entering transmitted to the outer surface of the reinforcing member.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The seismic slit material according to the present invention can be widely applied as a vertical slit material installed between a column part and a wall part, or a horizontal slit material installed between a beam part and a wall part. is there. As the slit material main body constituting the earthquake-resistant slit material, those formed of an appropriate material conventionally known, such as foamed polyethylene and foamed urethane, can be used. The support member that supports the slit material main body is installed so as to engage and support the slit material main body from both sides along the longitudinal direction of the slit between the joint portions of the column part or the beam part and the wall part. It is formed in a long shape so as to be cut and used in accordance with the length of the slit. As for the material of the support member, soft polyvinyl chloride, hard polyvinyl chloride, or a composite material thereof is suitable from the viewpoint of strength, durability, workability, and the like. Polyvinyl chloride or the like may be integrally formed by coextrusion processing or the like. In addition, regarding the material of the reinforcing member that connects and reinforces the supporting members, the elastically deformable spring steel and phosphor bronze are used because they are engaged with the engaging portions formed on the supporting members while being deformed. However, it may be made of a synthetic resin or the like as long as it can be restored to its original shape after deformation and has sufficient strength. The reinforcing member is installed on one side or both sides of the support member. When installing on one side, it is installed on the surface located on the opposite side to the concrete placement performed first. Further, the reinforcing members are installed at an appropriate interval, not on the entire surface of the supporting member.
[0007]
The specific shape of the support member according to the present invention may be any shape as long as the support member has a locking portion with which the reinforcing member can be engaged. In addition, regarding the specific shape of the locking portion itself, it is possible to bend the end portion of the locking portion into a hook shape, or to tilt the locking portion so as to maintain the engaged state. On the other hand, regarding the specific shape on the reinforcing member side, a substantially C-shaped one in which engaging portions such as hooks and notches that can be engaged with the engaging portions on the supporting member side are formed at both ends, and the reinforcing member The intermediate part of the slit member may be formed so as to protrude so as to be in contact with the outer surface of the slit material body. It is also possible to provide an abutting member at the intermediate portion of the reinforcing member so as to be able to abut on the outer surface of the slit material main body through screw coupling. It should be noted that engaging portions such as hooks and notches are formed at both ends of the reinforcing member, and an appropriate number of engaging portions are also formed at the intermediate portion of the reinforcing member, so that the locking portion on the support member side It is also possible to adopt a configuration in which it is possible to cope with this by selectively using the engaging portion according to the interval between them. Furthermore, the reinforcing member is composed of an engaging member that can engage with a locking portion of each supporting member that engages and supports the slit material body from both sides, and a connecting member that connects the engaging members to each other. Is also possible.
[0008]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state where an earthquake-resistant slit material according to a first embodiment of the present invention is installed in a mold, and FIG. 2 is a plan view thereof. As shown in the drawing, an earthquake-resistant slit material 1 according to the present embodiment includes a slit material body 2, support members 3 and 4 having a substantially U-shaped cross section for engaging and supporting the slit material body 2 from both sides, and support members thereof. It is comprised from the reinforcement member 5 etc. which are constructed between 3 and 4. FIG. And when attaching the earthquake-resistant slit material 1 to the molds 6 and 7, in this embodiment, it is attached via the fixing members 8 and 9 which also serve as joint rods. That is, the support members 3 and 4 are integrally formed with the engagement pieces 10 and 11 in a tapered shape so as to be able to engage with the fixing members 8 and 9, and the molds 6 and 7 are formed with nails or the like. The seismic slit material 1 is configured to be attached to the molds 6 and 7 by engaging the fixed members 8 and 9 between the engagement pieces 10 and 11.
[0009]
Further, at the end portions of the support members 3 and 4, reinforcing locking pieces 12 and 13 which also serve as locking portions of the reinforcing member 5 which is a feature of the present invention, as well as the rigidity of the support members 3 and 4 themselves are strengthened. It is integrally formed on both sides so as to spread at a substantially right angle. As shown in the figure, the reinforcing member 5 is placed between the reinforcing locking pieces 12 and 12 of the supporting members 3 and 4, for example, located on the opposite side of the side on which the concrete is first placed, and is placed on the concrete. The expansion of the support members 3 and 4 due to the side pressure acting on the opposite side surface of the slit material main body 2 during installation is prevented to prevent the slit material main body 2 from being deformed or detached. When the reinforcing member 5 is installed between the reinforcing locking pieces 12 and 12 of the support members 3 and 4, one end of the reinforcing member 5 is engaged with the reinforcing locking piece 12 on the support member 3 side, for example. In addition, the reinforcing member 5 is deformed in this state, and the other end is engaged with the reinforcing locking piece 12 on the mating support member 4 side, so that it can be easily installed. Incidentally, the support members 3 and 4 having the engaging pieces 10 and 11 and the reinforcing locking pieces 12 and 13 as described above are made of soft polyvinyl chloride, hard polyvinyl chloride, or their soft polyvinyl chloride and hard polyvinyl chloride. It is integrally formed as a continuous long piece having the same cross-sectional shape by polyvinyl chloride such as a composite material with vinyl, and is configured to be cut and used according to a required length.
[0010]
In the figure, reference numerals 14 and 15 denote refractory materials such as thermal expansion, which are attached to both surfaces of the slit material body 2. Further, as shown in the figure, water-stopping pieces 16 and 17 are integrally formed on the outer surfaces of both sides of the support member 3, and water-stopping portions 18 and 19 made of soft water-swellable polyvinyl chloride at their ends. Are integrally formed by coextrusion. Since the water-stopping pieces 16 and 17 and the water-stopping portions 18 and 19 are integrally formed by coextrusion, the water-stopping portions 18 and 19 are not peeled even if the support member 3 is deformed by an earthquake action. Absent. In addition, since the water-stop portions 18 and 19 are made of soft water-swellable polyvinyl chloride, when water enters from the outside through the gap between the support member 3 and the concrete portion, the water that has entered As a result, the water-stopping portions 18 and 19 expand and adhere to the concrete portion due to its own swelling pressure, and close the gap formed at the interface between the support member 3 and the concrete portion to accurately block the water ingress path. To do.
[0011]
FIG. 3 is a plan view showing a state in which the seismic slit material according to the second embodiment of the present invention is installed in a mold. This embodiment is a modification of the first embodiment, and illustrates a case where the support member 3 is used as the support member 4 as it is. In the present embodiment, as shown in the figure, the case where the reinforcing member 5 formed by inserting the ring-shaped water-swellable water-stopping material 20 into the intermediate portion in advance and bending both ends is illustrated. According to the present embodiment, the water-swellable water-stopping material 20 can accurately block the ingress of moisture that enters through the gap between the peripheral surface of the reinforcing member 5 and the concrete portion.
[0012]
FIG. 4 is a plan view showing a state in which the seismic slit material according to the third embodiment of the present invention is installed in the mold. This embodiment is a modification of the first embodiment, and illustrates a case where different cross-sectional shapes are adopted as the support members 21 and 22. In the present embodiment, as shown in the figure, the ridges 25 and 26 are formed at the intermediate portions of the reinforcing locking pieces 23 and 24 of the support members 21 and 22, and are formed at the distal ends of the reinforcing locking pieces 23 and 24. The both ends of the reinforcing member 5 are configured to be locked in a groove formed between the bent locking portions and the protruding strip portions 25 and 26.
[0013]
FIG. 5 is an enlarged part view showing another embodiment relating to the reinforcing member, and FIG. 6 shows a state in which the seismic slit material according to the fourth embodiment of the present invention using the reinforcing member is installed in the formwork. It is a top view. As shown in FIG. 5, the reinforcing member 27 according to the present embodiment is characterized in that an abutting member 28 is provided at an intermediate portion thereof so as to be able to abut on the outer surface of the slit material body 2 through screw coupling. Have That is, a female threaded portion 30 is formed at the center of the plate portion 29 constituting the reinforcing member 27 by burring or the like, and includes a bolt 31 that is screwed into the female threaded portion 30 and a contact portion 32 that is attached to the distal end portion. A contact member 28 is provided. As shown in FIG. 6, when the support members 21 and 22 are installed between the support members 21 and 22, as described above, both end portions of the plate portion 29 constituting the reinforcement member 27 are connected to the distal end portions of the reinforcement locking pieces 23. So that the abutting portion 32 is lightly abutted against the surface of the slit material main body 2 by the bolt 31 after being engaged with the groove portion formed between the bent locking portions and the protruding ridge portions 25, 26. Tighten and adjust to complete installation. According to the present embodiment, since the central portion of the slit material body 2 is supported by the contact member 28, the slit material body 2 is further reinforced against the side pressure at the time of placing concrete.
[0014]
FIG. 7 is a plan view showing a state in which the seismic slit material according to the fifth embodiment of the present invention is installed in the mold. This embodiment is a modification of the fourth embodiment, in which the plate portion 34 constituting the reinforcing member 33 is formed of a material that can be easily deformed, and as shown in the drawing, the reinforcing locking pieces of the support members 21 and 22 When the bolts 35 are tightened by being installed between the 23, the plate portion 34 is deformed according to the dimension between the reinforcing locking pieces 23. That is, the present embodiment can be applied to the case where the dimensions of the reinforcing locking pieces are different due to the deformation of the plate portion 34, and is characterized in that the flexibility of the reinforcing member 33 with respect to the wall thickness is expanded. It is what you have.
[0015]
FIG. 8 is a plan view showing a state in which the seismic slit material according to the sixth embodiment of the present invention is installed in the mold. In the present embodiment, as shown in the figure, a protruding portion 37 is formed at an intermediate portion of the reinforcing member 36 so as to be in contact with the outer surface of the slit material body 2. That is, according to the present embodiment, since the central portion of the slit material main body 2 is supported by the protruding member 37 when the reinforcing member 36 is mounted, the slit material main body 2 is further reinforced against the side pressure at the time of placing concrete. Will be.
[0016]
9 and 10 exemplify modified examples of the reinforcing member. Engaging portions that can be engaged with the engaging portions of the supporting member are formed at both ends of the reinforcing member, and an appropriate number is also provided at the intermediate portion. The engaging portion is formed. These modified examples relating to the reinforcing member can be applied to the above-described embodiments. By selectively using the engaging portion, various wall thicknesses can be easily handled. Flexibility for is expanded. The reinforcing member 38 shown in FIG. 9 includes a hook-shaped engaging portion 40 formed by bending at both ends of the plate portion 39 constituting the reinforcing member 38, and the position of the central portion of the plate portion 39 is shifted. A suitable number of engaging portions 41 having the same hook shape are formed. As shown in the figure, the reinforcing member 42 shown in FIG. 10 has an appropriate number of hook-like engaging portions 44 to 46 while sequentially shifting the position from the side portions of both ends of the plate portion 43 constituting the reinforcing member 42. Is formed.
[0017]
FIG. 11 is a perspective view showing a state in which the seismic slit material according to the seventh embodiment of the present invention is installed in the mold. As shown in the drawing, the reinforcing member 47 according to the present embodiment is sequentially shifted from both end portions to both the upper surface portion and the lower surface portion of the plate portion 48 that is formed in a U-shape that forms the reinforcing member 47. An appropriate number of notches 49 and 50 are formed. As described above, in the case of the present embodiment, since the plate portion 48 is formed in a U-shape, the rigidity of the reinforcing member 47 itself is enhanced. Further, if the notches 49 and 50 are selected and inserted, for example, between the reinforcing locking pieces 12 of the support members 3 and 4 from the end portions, the sizes of the reinforcing locking pieces 12 are different. Can be easily adapted, and the flexibility to the wall thickness is expanded.
[0018]
FIG. 12 is a perspective view showing a state in which the seismic slit material according to the eighth embodiment of the present invention is installed in the mold. This embodiment is different in form from the reinforcing member used in the above embodiments, and is formed so that the reinforcing member 51 can be engaged with, for example, the reinforcing locking pieces 12 of the supporting members 3 and 4 as shown in the figure. It is characterized in that it is composed of the engaging members 52 and 53 and the connecting member 54 that connects the engaging members 52 and 53 to each other. That is, in this embodiment, the separate engaging members 52 and 53 bent to a shape that can be engaged with the reinforcing locking pieces 12 of the support members 3 and 4 are respectively connected to the reinforcing locking pieces 12 of the support members 3 and 4. In the state of being engaged with each other, the engagement members 52 and 53 are fixed to each other through a nut 55 by a connecting member 54 made of a total screw bolt, thereby acting on the opposite surface of the slit material body 2. The supporting strength of the supporting members 3 and 4 is reinforced with respect to the side pressure at the time of placing concrete. As described above, in the case of the reinforcing member 51 according to the present embodiment, the engaging members 52 and 53 and the connecting member 54 that connects the engaging members 52 and 53 are separately configured. It becomes possible to easily adapt to the case where the sizes of the reinforcing locking pieces are different from each other, and the flexibility with respect to the wall thickness is greatly increased.
[0019]
FIG. 13 is a plan view showing a state in which the seismic slit material according to the ninth embodiment of the present invention is installed in a mold. The present embodiment is a modification of the eighth embodiment, and the reinforcing member 56 according to the present embodiment is, for example, an engagement formed so as to be able to engage with the reinforcing locking piece 23 of the support members 21, 22. It is comprised from the connection member 59 which connects between the members 57 and 58 and those engagement members 57 and 58. As shown in the drawing, the engaging members 57 and 58 are bent so as to wrap the reinforcing locking piece 23, and contact portions 60 and 61 that contact the surface of the slit material body 2 are formed at the ends thereof. . The connecting member 59 is formed with male threads at both ends, and nuts 62 and 63 are screwed together. Thus, when the reinforcing member 56 according to the present embodiment is installed between the support members 21 and 22, the engaging members 57 and 58 are engaged with the reinforcing locking pieces 23, and the engaging members 57 and 58 are engaged. This is performed by inserting the connecting member 59 into the insertion holes formed in the members 57 and 58 and then tightening them appropriately with the nuts 62 and 63. In this case, since the abutting portions 60 and 61 abut on the surface of the slit material body 2 by tightening with the nuts 62 and 63, the reinforcing effect on the slit material body 2 is improved. Also, in the case of the reinforcing member 56 according to the present embodiment, the engaging members 57 and 58 and the connecting member 59 for connecting the engaging members 57 and 58 are configured separately. It can be easily adapted to the case where the sizes of the pieces are different, and the flexibility with respect to the wall thickness is greatly increased.
[0020]
If a ring-shaped water-swellable waterproofing material 64 is externally fitted to the connecting member 59 in the ninth embodiment as shown in the drawing, the peripheral surface of the connecting member 59 and the concrete portion It is possible to accurately block the intrusion of moisture that enters through the gap at the interface portion, and to improve the water stopping performance. In that case, further, for example, soft water-swellable polyvinyl chloride as a water-stopping material may be integrally formed at the ends of the reinforcing locking pieces 23 and 24 of the support members 21 and 22 by co-extrusion. Furthermore, the water stop performance is further improved, and an extremely good seismic slit material can be obtained. Further, it is very effective to externally fit the ring-shaped water-swellable water-stopping material 64 to the connecting member 54 in the eighth embodiment in order to improve the water-stopping performance.
[0021]
【The invention's effect】
According to the present invention, the following effects can be obtained.
(1) Since the technical means of connecting and supporting between the support members that engage and support the slit material body from both sides using the reinforcing member is adopted, the support strength of the support member with respect to the placing pressure of the concrete is simplified. Can be reinforced, and the deformation of the slit material main body and the separation from the support member due to the lateral pressure at the time of placing can be prevented accurately.
(2) By engaging an engaging portion formed on the reinforcing member side, such as a hook shape or a notch, with an engaging portion formed on the support member side, it can be configured to be mounted with one touch. is there.
(3) If a contact member that can contact the outer surface of the slit material main body or a protrusion that can contact the outer surface of the slit material main body is formed in the intermediate portion of the reinforcing member, deformation of the slit material main body is prevented. The ability to respond to concrete placement pressure can be strengthened.
(4) If a plurality of engaging portions are formed on the reinforcing member, various wall thicknesses can be easily handled by selectively using the engaging portions.
(5) If the reinforcing member is composed of an engaging member that can engage with the engaging portion of the support member and a connecting member that connects the engaging members, the fastening length of the connecting member can be increased. By adjusting, various wall thicknesses can be easily handled.
( 6 ) Since the installation position of the reinforcing member can be adjusted freely with an appropriate interval, interference with the reinforcing member should be avoided when penetrating the slit material body for the arrangement of the striped muscle in the wall. This can be avoided easily, and as a result, workability related to the bar arrangement work can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which an earthquake-resistant slit material according to a first embodiment of the present invention is installed in a mold.
FIG. 2 is a plan view of the same embodiment.
FIG. 3 is a plan view showing a state in which a seismic slit material according to a second embodiment of the present invention is installed in a mold.
FIG. 4 is a plan view showing a state in which a seismic slit material according to a third embodiment of the present invention is installed in a mold.
FIG. 5 is an enlarged part view showing another embodiment relating to a reinforcing member.
FIG. 6 is a plan view showing a state in which a seismic slit material according to a fourth embodiment of the present invention is installed in a mold.
FIG. 7 is a plan view showing a state in which a seismic slit material according to a fifth embodiment of the present invention is installed in a mold.
FIG. 8 is a plan view showing a state in which a seismic slit material according to a sixth embodiment of the present invention is installed in a mold.
FIG. 9 is a perspective view illustrating a modified example related to a reinforcing member.
FIG. 10 is a perspective view illustrating a modified example related to a reinforcing member.
FIG. 11 is a perspective view showing a state in which a seismic slit material according to a seventh embodiment of the present invention is installed in a mold.
FIG. 12 is a perspective view showing a state in which an earthquake-resistant slit material according to an eighth embodiment of the present invention is installed in a mold.
FIG. 13 is a plan view showing a state in which a seismic slit material according to a ninth embodiment of the present invention is installed in a mold.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Earthquake-resistant slit material, 2 ... Slit material main body, 3, 4 ... Support member, 5 ... Reinforcement member, 6, 7 ... Formwork, 8, 9 ... Fixing member, 10, 11 ... Engagement piece, 12, 13 ... Reinforcement locking piece, 14, 15 ... refractory material, 16, 17 ... water stop piece, 18, 19 ... water stop portion, 20 ... water swellable water stop material, 21, 22 ... support member, 23, 24 ... reinforcement member Stop piece, 25, 26 ... convex portion, 27 ... reinforcing member, 28 ... abutting member, 29 ... plate portion, 30 ... female screw portion, 31 ... bolt, 32 ... abutting portion, 33 ... reinforcing member, 34 ... plate 35 ... bolt 36 ... reinforcing member 37 ... projection part 38 ... reinforcing member 39 ... plate part 40,41 ... engaging part 42 ... reinforcing member 43 ... plate part 44-46 ... engaging , 47 ... reinforcing member, 48 ... plate part, 49, 50 ... notch, 51 ... reinforcing member, 52, 53 ... engagement member, 54 ... connecting member, 55 ... nut 56 ... reinforcing member, 57, 58 ... engaging member 59 ... connecting member, 60, 61 ... contact portion, 62 and 63 ... nut, 64 ... water-swellable water stopping material

Claims

Seismic slit material installed between the joints between pillars or beams and walls of concrete buildings, each supporting member engaging and supporting the slit material body constituting the seismic slit material from both sides And a reinforcing member that engages with the engaging portions and connects the supporting members to each other, and the reinforcing members engage with the engaging portions of the supporting member at both ends. An earthquake-resistant slit material comprising a substantially C-shape having an engaging portion that can be used.

Seismic slit material installed between the joints between pillars or beams and walls of concrete buildings, each supporting member engaging and supporting the slit material body constituting the seismic slit material from both sides And a reinforcing member that engages with the engaging portions to connect the supporting members to each other, and is provided at the intermediate portion of the reinforcing member via a screw connection. An earthquake-resistant slit material characterized in that a contact member is provided so as to be able to contact the outer surface .

2. The earthquake-resistant slit material according to claim 1, wherein a contact member is provided at an intermediate portion of the reinforcing member so as to be able to contact the outer surface of the slit material body through screw connection.

Seismic slit material installed between the joints between pillars or beams and walls of concrete buildings, each supporting member engaging and supporting the slit material body constituting the seismic slit material from both sides And a reinforcing member that engages with the engaging portions to connect the support members to each other , and can abut on the outer surface of the slit material body at an intermediate portion of the reinforcing member. seismic slit material you characterized in that the formed protrusion so.

An engaging portion that can engage with a locking portion of the support member is formed at both ends of the reinforcing member, and an appropriate number of engaging portions are formed at an intermediate portion of the reinforcing member. Item 5. The earthquake-resistant slit material according to any one of Items 1 to 4.

Seismic slit material installed between the joints between pillars or beams and walls of concrete buildings, each supporting member engaging and supporting the slit material body constituting the seismic slit material from both sides And a reinforcing member that engages with the engaging portions to connect the supporting members to each other, and the reinforcing member can engage with the engaging portions of the supporting member. and covering member, seismic slit material you characterized in that it is composed of a connecting member for connecting between these engaging members each other.