JP3556784B2

JP3556784B2 - Stacking members used for underground water storage tanks, etc.

Info

Publication number: JP3556784B2
Application number: JP30565796A
Authority: JP
Inventors: 隆之池田
Original assignee: Takiron Co Ltd
Current assignee: Takiron Co Ltd
Priority date: 1996-10-30
Filing date: 1996-10-30
Publication date: 2004-08-25
Anticipated expiration: 2016-10-30
Also published as: JPH10131241A

Description

【０００１】
【発明の属する技術分野】
本発明は、地下貯水槽や地下貯留浸透槽等に設けられている水溜め空間に並べて配備して使用されたり、それらを並べて配備されたものに段積みされる積上げ部材に関する。
【０００２】
【従来の技術】
特公平４−２６６４８号公報に、雨水等の貯留浸透施設についての記載があり、この公報に、タンク部内に容器状部材を縦横かつ上下に積み上げることについての記載がある。この容器状部材は、多数の孔を有する底部及び周側壁で構成されており、文字通り、物を入れるバケツ、器、箱といったような容器の形状を有している。このような容器状部材を重ね合わせてタンク内の充填材とする場合、上載荷重に対して大きな強度を示すのは、周側壁が垂直になっている容器である。しかしながら、周側壁が垂直になっている容器状部材は、運搬時や保管時に重ね合わせたとき嵩張って全体の容積が小さくならず、輸送効率や保管効率がきわめて悪く、物流費が高くなるという課題があった。
【０００３】
また、上記公報に記載のように、底壁に対して周側壁を鈍角に立ち上げてある場合、すなわち、周側壁を上拡がりに傾斜させた場合、図１４のように同一方向で重ねれば１つの容器１００に他の容器２００の底壁２１０が入り込み、他の容器２００の底壁２１０が容器１００の周側壁１２０の内面に接する形で重なる。このようにして、容器２００に別の容器３００を重ねれば、それらの容器を全体としてコンパクトに梱包でき、持ち運びや保管にきわめて便利である。
【０００４】
【発明が解決しようとする課題】
しかしながら、このような容器状部材には、大きな問題があった。すなわち、多数の通水口が開設された多角形の周側壁と底壁とを有する容器状部材は周側壁が傾斜しているため、これらの容器状部材を積み上げたときに大きな上載荷重が加わると周側壁が座屈を生じやすく、仮に周側壁の一部に座屈が生じるとその影響が他の部分にも及んで座屈範囲が短期間で簡単に広がってしまう。このような状況は、周側壁の厚さを厚くすることによって多少は改善されるけれども、本質的な解決策とはなり得ない。
【０００５】
本発明は以上の問題に鑑みてなされたものであり、積み上げたときに上記した周側壁に相当する側板が垂直になって上載荷重に対する大きな対抗力を発揮するものであるにもかかわらず、嵩張らないコンパクトな形に梱包して搬送したり保管したりすることのできる地下貯水槽等に用いる積上げ部材を提供することを目的とする。
【０００６】
【課題を解決するための手段】
請求項１に係る発明の地下貯水槽等に用いる積上げ部材は、地中に凹入状に形成された水溜め空間に並べて配備されたり、あるいは並べて配備されたものに段積みされて使用される積上げ部材であって、四角形の側板とこの側板よりも幅狭でその側板の上辺部に基端部が位置してその上辺部から直角に突き出された梁部とを一体に有し、その一対のものを互いに反対向きにして組み合わせて一方のものの上記梁部の先端部を他方のものの上記側板の上辺部に重ね合わせ、他方のものの上記梁部の先端部を一方のものの上記側板の上辺部に重ね合わせることによりすべての上記梁部を水平に並べたときに、一方のものの上記側板と他方のものの上記側板とが対向しかつそれらの側板の相互間に水平に並んだ上記梁部が横架された門形を形作る同一形状の一対の合成樹脂製の分割体でなる、というものである。
【０００７】
この積上げ部材において、一対の分割体を門形に形作るように組み合わせると、一対の分割体のそれぞれの側板が垂直姿勢を保つので、上載荷重に対して大きな対抗力を発揮する。また、多数の分割体を同じ向きにして嵌合させると、側板同士および梁部同士が互いに重なり合ってコンパクトな形になる。
【０００８】
請求項２に係る発明の地下貯水槽等に用いる積上げ部材は、請求項１に記載したものにおいて、上記分割体における上記側板の下端部と上記梁部の基端部および先端部とのうちの一方側に第１突起が設けられ、他方側に、その分割体に重ね合わされる他の上記分割体の上記第１突起が嵌合される第１凹部が設けられ、上記分割体における上記側板の上辺部と上記梁部の先端部のうちの一方側に第２突起が設けられ、他方側に、その分割体と組み合わされて門形を形作る他の上記分割体の上記第２突起が嵌合される第２凹部が設けられている、というものである。
【０００９】
この積上げ部材においては、一対の分割体を門形に形作るように組み合わせたときには、第２突起と第２凹部との嵌合によって一対の分割体が相互に位置決めされるので、それら一対の分割体の組み合わせによって形作られる積上げ部材の門形が正確に定まる。また、その門形の積上げ部材を積み上げたときに、第１突起と第１凹部との嵌合によって上下の積上げ部材が相互に位置決めされるので、積上げ部材を上下多段に積み上げやすくなる。
【００１０】
請求項３に係る発明の地下貯水槽等に用いる積上げ部材は、請求項１または請求項２に記載したものにおいて、上記分割体の上記側板がその幅方向に並んだ多数のリブを備えていると共に、上記分割体の上記梁部がその幅方向に並んだ多数のリブを備えている、というものである。
【００１１】
このようにしておくと、リブによって側板や梁部の強度が高まり、上載荷重に対する対向力がいっそう向上する。
【００１２】
請求項４に係る発明の地下貯水槽等に用いる積上げ部材は、請求項１、請求項２、請求項３のいずれかに記載したものにおいて、上記分割体における上記側板の下端部に上記第１突起が下向きに設けられ、上記分割体における上記梁部の基端部および先端部のそれぞれに、その分割体に重ね合わされる他の上記分割体の上記第１突起が嵌合される溝状の上記第１凹部が上向きに設けられている、というものである。
【００１３】
このようにしておくと、一対の分割体の組み合わせによって形作られる門形の積上げ部材を積み上げたときに、第１突起と第１凹部との嵌合によって上下の積上げ部材が相互に位置決めされるので、積上げ部材を上下多段に積み上げやすくなる。
【００１４】
請求項５に係る発明の地下貯水槽等に用いる積上げ部材は、請求項１、請求項２、請求項３、請求項４のいずれかに記載したものにおいて、上記分割体における上記梁部の先端部に上記第２突起が下向きに設けられ、上記側板の上辺部に、その分割体と組み合わされて門形を形作る他の上記分割体の上記第２突起が嵌合される溝状の第２凹部が上向きに設けられている、というものである。
【００１５】
このようにしておくと、一対の分割体を門形に形作るように組み合わせたときには、第２突起と第２凹部との嵌合によって一対の分割体が相互に位置決めされるので、それら一対の分割体の組み合わせによって形作られる積上げ部材の門形が正確に定まる。
【００１６】
請求項６に係る発明の地下貯水槽等に用いる積上げ部材は、地中に凹入状に形成された水溜め空間に並べて配備されたり、あるいは並べて配備されたものに段積みされて使用される積上げ部材であって、平行な一対の支柱部とこれらの支柱部の相互間に亘って設けられた連結部とを一体に備えた側板とこの側板よりも幅狭で片側の上記支柱部の上端部に基端部が位置してその支柱部の上端部から直角に突き出された梁部とを一体に有し、その一対のものを互いに反対向きにして組み合わせて一方のものの上記梁部の先端部を他方のものの他側の上記支柱部の上端部に重ね合わせ、他方のものの上記梁部の先端部を一方のものの他側の上記支柱部の上端部に重ね合わせることによりすべての上記梁部を水平に並べたときに、一方のものの上記側板と他方のものの上記側板とが対向しかつそれらの側板の相互間に水平に並んだ上記梁部が横架された門形を形作る同一形状の一対の合成樹脂製の分割体でなる、というものである。
【００１７】
この積上げ部材において、一対の分割体を門形に形作るように組み合わせると、一対の分割体のそれぞれの側板が垂直姿勢を保つので、上載荷重に対して大きな対抗力を発揮する。特に、側板に具備されている平行な一対の支柱部が上載荷重に対して大きな対抗力を発揮する。また、多数の分割体を横に重ねるとコンパクトな形になる。
【００１８】
請求項７に係る発明の地下貯水槽等に用いる積上げ部材は、請求項６に記載したものにおいて、片側の上記支柱部の下端部と、上記梁部の基端部と、上記梁部の先端部と、他側の上記支柱部の下端部と、他側の上記支柱部の上端部とにそれぞれ孔部が設けられ、上記分割体を重ね合わせたときに互いに重なり合う上記孔部に嵌合されてそれらの孔部を位置決めする連結具を備える、というものである。
【００１９】
この積上げ部材においては、一対の分割体を門形に形作るように組み合わせたときには、その組み合わせによって互いに重なり合った孔部に連結具を嵌合しておくことによって、それら一対の分割体の組み合わせによって形作られる積上げ部材の門形が正確に定まる。また、その門形の積上げ部材を積み上げたときには、互いに重なり合った孔部に連結具を嵌合させて上下の積上げ部材を相互に位置決めできるので、積上げ部材を上下多段に積み上げやすくなる。
【００２０】
請求項８に係る発明の地下貯水槽等に用いる積上げ部材は、請求項６に記載したものにおいて、片側の上記支柱部の下端部と他側の上記支柱部の下端部と上記梁部の先端部とにそれぞれ孔部が設けられ、片側の上記支柱部の上端部と他側の上記支柱部の上端部とに、上記分割体を重ね合わせたときに対応される上記孔部に嵌合される突起が設けられている、というものである。また、請求項９に係る発明の地下貯水槽等に用いる積上げ部材は、請求項６に記載したものにおいて、上記梁部の先端部と片側の上記支柱部の上端部と他側の上記支柱部の上端部とにそれぞれ孔部が設けられ、片側の上記支柱部の下端部と他側の上記支柱部の下端部とに、上記分割体を段積みしたときに対応される上記孔部に嵌合される突起が設けられている、というものである。
【００２１】
この積上げ部材においては、一対の分割体を門形に形作るように組み合わせたときには、その組み合わせによって互いに重なり合った孔部に突起が嵌合するので、一対の分割体の組み合わせによって形作られる積上げ部材の門形が正確に定まる。また、その門形の積上げ部材を積み上げたときには、互いに重なり合った孔部に突起が嵌合して上下の積上げ部材が相互に位置決めされるので、積上げ部材を上下多段に積み上げやすくなる。
【００２２】
請求項１０に係る発明の地下貯水槽等に用いる積上げ部材は、請求項６、請求項７、請求項８、請求項９のいずれかに記載したものにおいて、上記支柱部が、パイプ状の中空体の内部空間に、その中空体の曲げ剛性よりも大きな曲げ剛性を有する芯材を装填した、というものである。
【００２３】
これらの積上げ部材において、分割体における側板の支柱部の曲げ剛性が芯材によって高められるので、その支柱部が上載荷重に対して大きな対抗力を発揮するようになる。
【００２４】
【発明の実施の形態】
図１は本発明の実施の一形態である積上げ部材４を用いて施工した地下貯水槽Ａを概略的に示した一部省略縦断面図、図２は地下貯水槽Ａを概略的に示した平面構成図、図３は分割体４０の斜視図、図４は反対向きにした分割体４０の斜視図、図５は門形を形成している積上げ部材４の斜視図、図６は分割体４０の一部を斜め下から見た斜視図、図７は積上げ部材４を上下に積み上げた状態の部分正面図、図８は積上げ部材４を重ねた状態の説明図である。
【００２５】
図１に示した地下貯水槽Ａは、地面を掘り下げることによって地中に凹入状に形成された水溜め空間１を有する。この水溜め空間１において、その周囲壁面１１はその地層を形成している土砂の安息角を勘案して上開き状に傾斜している。この水溜め区間１の底壁面１２とその底壁面１２に連続する上記周囲壁面１１とは通水性を持たない遮水シート２で被覆されており、その遮水シート２の上に不織布２１が配備されている。上記遮水シート２には塩化ビニル樹脂シート、ゴムシート、ポリエチレン樹脂シートなどのシートを用いることができる。
【００２６】
水溜め空間１の底壁面１２に遮水シート２と不織布２１とを介して集合体３が装填されている。この集合体３は、水平に並べられかつ上下に段積みされた多数の積上げ部材４でなる。これらの積上げ部材４は後述する合成樹脂製の一対の分割体４０，４０でなり、それらの分割体４０，４０を門形に組み合わせることによって形成されている。そして、門形の個々の積上げ部材４自体で囲まれる空間が水溜め用の空隙を形成し、それらの空隙が互いに連通して全体として１つの大きな空間を形成している。
【００２７】
上記集合体３の周囲に、垂直に立ち上げられたコンクリート製の仕切壁５が設けられている。この仕切壁５には多数の通水孔５１が貫通状に形成されていて、この通水孔５１によって上記仕切壁５に通水性が付与されている。図例では、上記水溜め空間１の中央部の２箇所にも垂直に立ち上げられた仕切壁５，５が設けられていて、この仕切壁５，５によって上記集合体３が左右に２分割されている。そして、上記仕切壁５と上記周囲壁面１１との間の空間や、中央部の２箇所の仕切壁５，５の間の空間に小形固形物の集合でなる通水層６…が配備されている。通水層６は、砕石を上記空間に装填することによって形成されている。この通水層６を砂利や玉石などの小石で形成することも可能である。さらに、上記集合体３と上記通水層６との上に透水層７が配設されている。この透水層７は土砂を敷き詰めることによって形成されており、その透水層７を利用して芝生が植生されている。透水層７の上に自動車の駐車場を形成することも可能である。なお、上記仕切壁５をポーラスコンクリート製にしてその仕切壁５に通水性を付与しておいてもよい。また、仕切壁５の厚さは、上記集合体３に加わる荷重や通水層６に加わる荷重など総合的に勘案してそれらに耐え得る強度を持つような厚さにしておく。また、上記仕切壁５をＦＲＰなどのプラスチック製にすることも可能であり、そうすることによって仕切壁の軽量化が達成され、運搬、施工が容易になるという利点がある。
【００２８】
上記積上げ部材４によって形成されている上記水溜め用の空隙に上記遮水シート２と上記通水層６とを貫通して延びる地表水導入路８の終部が配置されている。この地表水導入路８は、図示していない建物の屋根から雨樋を介して集められた雨水や、都市公園の歩道脇に設けられた側溝で集められた雨水やテニスコートなどから出る雨水を上記水溜め用の空隙に導入するために設けられている。さらに、上記水溜め空間１の底部に、上記水溜め用の空隙に溜まった水を排水するための排水溝９１が設けられており、この排水溝９１に、排水路９が接続されている。なお、排水路９は合成樹脂管を埋設することによって形成することができ、その排水路９の途中に調節弁９２が介在されている。
【００２９】
以上説明した地下貯水槽Ａにおいて、水溜め空間１を取り囲んでいる壁１３は必ずしも必要ではない。しかし、地盤の強化や安定化が必要な場合には、その壁１３を所定の厚さの捨てコンクリート層で形成しておくとよい。
【００３０】
上記積上げ部材４は、図３および図４に示した分割体４０を一対（２つ）用意することによって形成され、それらの分割体４０，４０を門形に組み合わせることによって図５に示した門形の積上げ部材４となる。分割体４０は、ポリプロピレン樹脂やポリ塩化ビニル樹脂などの合成樹脂で一体成形されている。
【００３１】
図３および図４に示した分割体４０は、四角形の側板４１とこの側板４１の上辺部４２から直角に突き出された矩形板片状の梁部４３とを一体に有する。梁部４３の幅寸法は側板４１の幅寸法の半分になっていて、そのような梁部４３の基端部４３ａが図示のように側板４１の上辺部４２に位置して、その上辺部４２のの片側の半分のところから直角に突出されている。また、側板４１はその内側で幅方向に並んだ多数のリブ４４を備え、梁部４３についても、図６に示したようにその内側で幅方向に並んだ多数のリブ４５を備えている。
【００３２】
上記側板４１の下端部、具体的にはその側板４１に備わっているそれぞれのリブ４４の下端部に第１突起４６が下向きに設けられている。これに対し、梁部４３の基端部４３ａと先端部４３ｂとにはそれぞれ溝状の第１凹部４７，４８がその全幅に亘って上向きに設けられている。これらの第１凹部４７，４８には、分割体４０を重ね合わせたときに、上段側の分割体４０の上記第１突起４６が嵌合するようになっており、それらの第１突起４６と第１凹部４７または４８が嵌合したときには、上下の分割体４０や、一対の分割体４０，４０を組み合わせた門形の上下の積上げ部材４，４が第１凹部４７，４８の溝幅方向で互いに動かないように位置決めされる。
【００３３】
また、上記梁部４３の先端部４３ｂ、具体的にはその梁部４３に備わっているそれぞれのリブ４４の先端部に第２突起４９が下向きに設けられている。これに対し、側板４１の上辺部４２の梁部４３が突出されていない箇所の全長に亘って溝状の第２凹部５２が上向きに設けられている。この第２凹部５２には、一対の分割体４０，４０を図５のように互いに反対向きにして門形に組み合わせたときに、相手方となる分割体４０の上記第２突起４９が嵌合するようになっており、その第２突起４９と第２凹部５２とが嵌合したときには、それら一対の分割体４０，４０が第２凹部５２の溝幅方向で動かないように位置決めされて正確な門形が形成される。
【００３４】
一対の分割体４０，４０を互いに反対向きにして組み合わせることにより図５に示した門形の積上げ部材４を形成したときには、上記のように第２突起４９と第２凹部５２とが嵌合すると共に、一方の分割体４０の梁部４３の先端部が他方の分割体４０の側板４１の上辺部４２に重なり合う。そして、両方の分割体４０，４０の梁部４３，４３が水平に並び、しかも、それらの梁部４３，４３が、相対向している一方の分割体４０の側板４１と他方の分割体４０の側板４１の相互間に横架された状態になる。
【００３５】
一対の分割体４０，４０を門形に組み合わせた図５の積上げ部材４が、冒頭で説明したように、図１に示した水溜め空間１に上下に段積みされ、かつ左右前後に並べられて集合体３を形成する。門形の積上げ部材４を積み上げたときには、図７のように、上段側の積上げ部材４に具備されている第１突起４６が下段側の積上げ部材４に具備されている第１凹部４７，４８に嵌合される。
【００３６】
ここで、上記積上げ部材４は、側板４１と梁部とが直角をなす分割体４０を互いに反対向きにして組み合わせたものであるので、この積上げ部材４を上下に段積みした状態では、それぞれの積上げ部材４を形成している個々の分割体４０，４０の側板４１，４１のそれぞれが垂直になる。そのため、個々の積上げ部材４に加わる垂直な上載荷重に対してその側板４１が大きな対抗力を発揮し、その側板４１が通常時に受ける上載荷重によって座屈を生じにくくなる。その上、上記側板４１は、多数のリブ４４によって補強もなされているので上載荷重に対してきわめて大きな対抗力を発揮するようになり、それらの事項が座屈をいっそう生じにくくすることに役立つ。
【００３７】
なお、図１で説明した透水層７は、段積みされた積上げ部材４の最上段のものの上に形成される。その透水層７の代わりに遮水シート等を使用してもよい。また、上記分割体４０の側板４１には、図５に仮想線で示したように通水口として役立つ開口４１ａを開設しておいてもよい。開口４１ａを開設しておくと、その開口４１ａを通して横に並べられた個々の門形の積上げ部材４で囲まれる空間を水が流通する。なお、開口４１ａを開設していない場合には、横に並んでいる門形の積上げ部材４の相互間に形成される隙間を通して水が流通する。
【００３８】
上記した分割体４０は、図８に示したように多数のものを同じ向きにして嵌合状に重ねることができる。このようにすると、互いに嵌合された分割体４０，４０の側板４１，４１同士および梁部４３，４３同士が互いに重なり合ってコンパクトな形になり、多数の分割体４０が嵩張らなくなるので、工場や地下貯水槽Ａの施工現場で多数の分割体４０を保管する場合にそれほど広いスペースが必要にならず、また、トラックで分割体４０を搬送するときの分割体１個当りの搬送コストが安くつく。
【００３９】
上記分割体４０において、第１突起を梁部４３の基端部４３ａおよび先端部４３ｂに設け、第１凹部を側板４１の下端部に設けてもよい。また、第２突起を側板４１の上辺部に設け、第２凹部を梁部４３の先端部４３ｂに設けてもよい。
【００４０】
図９は変形例による分割体６０の斜視図、図１０は分割体６０の断面図、図１１は門形を形成している積上げ部材４Ａの斜視図、図１２は積上げ部材４Ａを積み上げた状態の説明図である。
【００４１】
上記積上げ部材４Ａは、図９に示した分割体６０を一対（２つ）用意することによって形成され、それらの分割体６０，６０を門形に組み合わせることによって図１１に示した門形の積上げ部材４となる。分割体６０は、ポリプロピレン樹脂やポリ塩化ビニル樹脂などの合成樹脂で一体成形されている。
【００４２】
図９に示した分割体６０は、平行な一対の支柱部６１，６２とこれらの支柱部６１，６２の相互間に亘って設けられた板状の連結部６３とを一体に備えた側板６４と、この側板６４よりも幅狭で片側の支柱部６１の上端部に基端部６５ａが位置してその支柱部６１の上端部から直角に突き出された板片状の梁部６５とを一体に有する。梁部６５の幅寸法は支柱部６１の外周直径寸法と略同一になっている。
【００４３】
図１０に示したように、一対の支柱部６１，６２は、パイプ状の中空体６６の内部空間に、その中空体６６の曲げ剛性よりも大きな曲げ剛性を有する芯材６７を装填したものである。芯材６７は、中空体６６の曲げ剛性よりも大きな曲げ剛性を有する素材であれば何でもよいが、好ましくは、プラスチックの廃材や繊維強化プラスチックなどの所望の形状に成形したものである。このような芯材６７を中空体６６に装填した支柱部６１，６２は、きわめて大きな圧縮強度や曲げ強度を備えるようになる。また、上記連結部６３には開口６８が備わっており、この開口６８が水の流通に役立つ。
【００４４】
図９、図１０、図１２などに示したように、片側の支柱部６１の下端部と、梁部６５の基端部６５ａと、梁部６５の先端部６５ｂと、他側の支柱部６２の下端部と、他側の支柱部の上端部とにそれぞれ孔部７１，７２，７３，７４，７５が設けられている。図１１において、７６は連結具であり、この連結具７６は円柱状に形成されていて、図１２のように分割体６０，６０を重ね合わせたときに互いに重なり合う上記孔部に嵌合されてそれらの孔部を位置決めする役割を果たす。互いに重なり合う孔部の組み合わせの一例が図１２に示されている。同図では、孔部７１と孔部７２、孔部７４と孔部７５、孔部７４と孔部７３と孔部７５が、それぞれ重なり合っており、それらの重なり箇所においてそれぞれの孔部に上記連結具７６…が嵌合されてそれらの孔部を位置決めしている。
【００４５】
また、一対の分割体６０，６０は互いに反対向きにして組み合わせることにより、図１１のように、一方の分割体６０の梁部６５の先端部６５ｂを他方の分割体６０の他側の支柱部６２の上端部に重ね合わせ、他方の分割体６０の梁部６５の先端部６５ｂを一方の分割体６０の他側の支柱部６２の上端部に重ね合わせることにより２つの梁部６５，６５を水平に並べたときには、それらの一対の分割体６０，６０によって、一方の分割体６０の側板６４と他方の分割体６０の側板６４とが対向しかつそれらの側板６４，６４の相互間に水平に並んだ梁部６５，６５が横架された門形が形作られる。そして、そのように一対の分割体６０，６０を門形に組み合わせたときには、孔部７３と７５とが重なり合い、その重なり箇所に上記連結具７６を嵌合することによって、一対の分割体６０，６０が動かないように位置決めされて正確な門形が形成される。
【００４６】
一対の分割体６０，６０を門形に組み合わせた図１１の積上げ部材４Ａが、冒頭で説明したように、図１に示した水溜め空間１に上下に段積みされ、かつ左右前後に並べられて集合体３を形成する。
【００４７】
ここで、上記積上げ部材４Ａは、側板６４と梁部６５とが直角をなす分割体６０を互いに反対向きにして組み合わせたものであるので、この積上げ部材４Ａを図１２のように上下に段積みした状態では、それぞれの積上げ部材４Ａを形成している個々の分割体６０，６０の側板６４，６４のそれぞれが垂直になる。ただし、側板６４，６４のそれぞれは垂直になるが、連結具７６は必ずしも垂直である必要はなく、その形状も特に限定されるものではない。そして、側板６４の全体が垂直であるため、個々の積上げ部材４Ａに加わる垂直な上載荷重に対してその側板６４の支柱部６１，６２が大きな対抗力を発揮し、その側板６４が通常時に受ける上載荷重によって座屈を生じにくくなる。その上、支柱部６１，６２は、図１０で説明したように、芯材６７によって補強されているので、上載荷重に対してきわめて大きな対抗力を発揮するようになる。
【００４８】
なお、図１で説明した透水層７は、段積みされた積上げ部材４Ａの最上段のものの上に透水シートなどを介して形成される。その透水層７の代わりに遮水シート等を使用してもよく、その場合には、透水シートを用いる必要はない。また、上記分割体６０の側板６４には開口６８が開設されているので、その開口６８を通して横に並べられた個々の門形の積上げ部材４Ａで囲まれる空間を水が流通する。
【００４９】
上記した分割体６０は、多数のものを同じ向きにしてコンパクトに重ねることができる。そのようにすると、多数の分割体６０が嵩張らなくなるので、工場や地下貯水槽Ａの施工現場で多数の分割体６０を保管する場合にそれほど広いスペースが必要にならず、また、トラックで分割体４０を搬送するときの分割体１個当りの搬送コストが安くつく。
【００５０】
図１３は分割体６０の他の変形例を示している。
【００５１】
この分割体６０において、図９〜図１２で説明したものと異なる点は、片側の支柱部６１の下端部と他側の支柱部６２の下端部と梁部６５の先端部６５ｂとにそれぞれ孔部８１，８３（他側の支柱部６２の下端部の孔部は図に現れていない）が設けられ、片側の支柱部６１の上端部と他側の支柱部６２の上端部とに、２つの分割体６０，６０を重ね合わせたときに対応される孔部８１，８３（他側の支柱部６２の下端部の孔部を含む）に嵌合される突起８５，８６が設けられている点である。その他の事項は、図９〜図１２で説明したものと同様であるので、同一部分に同一符号を付すことによって詳細な説明を省略する。
図１３の分割体６０においても、図９〜図１２で説明した分割体６０と同様に、門形の積上げ部材を形成することができ、また、そのような積上げ部材を段積みすることができる。なお、上記突起８５，８６や上記孔部８１，８３（他側の支柱部６２の下端部の孔部を含む）は、図９〜図１２で説明した孔部７１〜７５や連結具７６と同様の作用を発揮する。すなわち、門形に組み合わせた一対の分割体６０，６０を位置決めする作用や、門形の積上げ部材を積上げやすくするといった作用を発揮する。
【００５２】
なお、梁部６５の先端部６５ｂと片側の支柱部６１の上端部と他側の支柱部の上端部とにそれぞれ孔部を設け、片側の支柱部６１の下端部と他側の支柱部６２の下端部とに、分割体６０を段積みしたときに対応される孔部に嵌合される突起を設けてもよい。
【００５３】
図１や図２で説明した地下貯水槽Ａにおいて、上記水溜め空間１の周囲壁面１１は上開き状に傾斜しているが、水溜め空間１の深さが浅く、しかも周囲壁面１１の土質が崩れにくい場合は、周囲壁面１１が略垂直になるように掘削してもよい。
【００５４】
この地下貯水槽Ａにおいては、地表に降った雨水が、上記透水層７を経て上記集合体３に備わっている水溜め用の空隙や上記通水層６に導入され、その通水層６に浸入した雨水は、上記仕切壁５に具備されている通水孔５１によって上記空隙に導入されて貯留される。また、側溝などに集まった雨水などの地表水は上記地表水導入路８を経て上記空隙に直接に導入される。しかしながら、地表水の中に枯葉や土砂などの固形物が含まれている場合には、この地下貯水槽Ａの前に固形物分離槽や濾過槽、沈殿槽などを設けてそれらの固形物を分離できるようにしておくことが望ましい。こうしておけば、固形物の混ざっていないきれいな水が上記水溜め用の空隙に溜まる。水溜め用の空隙に溜まった水は必要に応じて地下に浸透させたり排水路９を経て排水することができる。
【００５５】
このような地下貯水槽Ａは、集中豪雨などに見舞われたときに都市河川の水位が急激に上昇して氾濫を起こすといった事態を回避することに利用することができる。たとえば、集中豪雨の警報によってあらかじめ水溜め空間１を空にしておき、河川の水位がその集中豪雨によって上昇している間は、地表を流れて河川に流れ込もうとする雨水の一部をこの水溜め空間１に流入させて一時貯留しておき、集中豪雨が治まって河川の水位が下がったときにその水溜め空間１の貯留水を河川に放流するようにすると、河川の水位の急激な上昇による氾濫を回避することができる。また、火災などの緊急を要する場合には、水溜め空間１の貯留水を汲み上げ、防火用水などに用いることもできる。通常は、水溜め空間１の水を植物の潅水などに使用することができるのであり、そのためには、別途、水汲み口を水溜め空間１から導き出しておくことが好ましい。
【００５６】
また、図１や図２に示した地下貯水槽Ａのように、上記集合体３を左右に２分割し、その左右の集合体３，３の間の仕切壁５，５で挟まれた空間に砕石などの小形固形物の集合でなる通水層６を形成しておくと、１箇所の集合体３の規模が適切な規模に小さく抑えられるので、仕切壁５により積上げ部材４を位置ずれしないように固定する作用が確実に発揮されるようになるだけでなく、積上げ部材４の施工性も向上する。また、水が左側の集合体３の水溜め用の空隙から仕切壁５，５の相互間の上記通水層６を通過して右側の集合体３の水溜め用の空隙に移動するときに、その通水層６がフィルターとして水の浄化作用を発揮する。このため、その通水層６を炭や特殊な鉱物で形成しておくと、右側の集合体３の水溜め用の空隙から取り出す水を、その浄化の度合に応じて有効に活用することが可能になる。
【００５７】
【発明の効果】
本発明によれば、一対の分割体を正確な門形に組み合わせることができ、また、上下に段積みされた門形の積上げ部材が動かないように確実に位置決めされるので、その積上げ部材を積み上げやすいという効果がある。
【００５８】
また、一対の分割体を門形に組み合わせることによって形成された積上げ部材を上下多段に段積みした場合、それぞれの分割体は、その側板が垂直になって上載荷重に対する大きな対抗力を発揮するので、地中に凹入状に形成された水溜め空間の地表面での開口部を覆って配設されている透水層や遮水層を下から支え得るだけの十分に大きな強度を確保することが容易な地下貯水槽などに用いる積上げ部材を提供することが可能になる。
【００５９】
さらに、そのように上載荷重に対して大きな対抗力を発揮するように側板が垂直になっているにもかかわらず、その積上げ部材が２つの同一形状の分割体を組み合わせることによって形成されており、しかも個々の分割体は、側板とその側板から直角に突き出た梁部とを有するものであるから、多数の分割体をコンパクトな形に重ねることが可能であり、そのことが、工場や地下貯水槽や地下貯留浸透槽などの施工現場で多数の分割体を保管する場合に必要なスペースを狭くしたり、トラックで分割体を搬送するときの分割体１個当りの搬送コストを安くすることに役立つという効果がある。
【図面の簡単な説明】
【図１】本発明の実施の一形態である積上げ部材を用いて施工した地下貯水槽を概略的に示した一部省略縦断面図である。
【図２】地下貯水槽を概略的に示した平面構成図である。
【図３】分割体の斜視図である。
【図４】反対向きにした分割体の斜視図である。
【図５】門形を形成している積上げ部材の斜視図である。
【図６】分割体の一部を斜め下から見た斜視図である。
【図７】積上げ部材を上下に積み上げた状態の部分正面図である。
【図８】積上げ部材を重ねた状態の説明図である。
【図９】変形例による分割体の斜視図である。
【図１０】分割体の断面図である。
【図１１】門形を形成している積上げ部材の斜視図である。
【図１２】積上げ部材を積み上げた状態の説明図である。
【図１３】分割体の他の変形例を示す斜視図である。
【図１４】従来の容器状部材を積み重ねた状態の説明図である。
【符号の説明】
１水溜め空間
４，４Ａ積上げ部材
４０分割体
４１側板
４２側板の上辺部
４３梁部
４３ａ梁部の基端部
４３ｂ梁部の先端部
４４，４５リブ
４６第１突起
４７，４８第１凹部
４９第２突起
５２第２凹部
６０分割体
６１，６２支柱部
６３連結部
６４側板
６５梁部
６５ａ梁部の基端部
６５ｂ梁部の先端部
６６中空体
６７芯材
７１，７２，７３，７４，７５孔部
７６連結具
８１，８３孔部
８５，８６孔部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stacking member that is used by being arranged side by side in a water storage space provided in an underground water storage tank, an underground storage infiltration tank, or the like, or that is stacked in a state where they are arranged and arranged.
[0002]
[Prior art]
Japanese Patent Publication No. Hei 4-26648 describes a storage and infiltration facility for rainwater and the like, and this publication describes that container-like members are stacked vertically and horizontally in a tank portion. This container-like member is composed of a bottom portion having a large number of holes and a peripheral side wall, and has a shape of a container such as a bucket, a container, a box, etc., for literally holding an object. When such a container-like member is overlapped to form a filler in a tank, a container having a large peripheral wall has a large strength against an overload. However, a container-like member having a vertical peripheral side wall is bulky when stacked during transportation or storage, does not reduce the overall volume, is extremely poor in transportation efficiency and storage efficiency, and increases distribution costs. There were challenges.
[0003]
Further, as described in the above publication, when the peripheral side wall is raised at an obtuse angle with respect to the bottom wall, that is, when the peripheral side wall is inclined upwardly, when the peripheral side walls are overlapped in the same direction as shown in FIG. The bottom wall 210 of another container 200 enters one container 100, and the bottom wall 210 of another container 200 overlaps with the inner surface of the peripheral side wall 120 of the container 100. In this manner, if another container 300 is stacked on the container 200, the containers can be compactly packed as a whole, which is extremely convenient for carrying and storing.
[0004]
[Problems to be solved by the invention]
However, such a container-shaped member has a serious problem. That is, since a container-like member having a polygonal peripheral side wall and a bottom wall with a large number of water inlets is inclined at the peripheral side wall, a large overload is applied when these container-like members are stacked. Buckling is likely to occur in the peripheral side wall, and if buckling occurs in one part of the peripheral side wall, the influence extends to other parts, and the buckling range is easily expanded in a short period of time. Although this situation is somewhat improved by increasing the thickness of the peripheral wall, it cannot be an essential solution.
[0005]
The present invention has been made in view of the above-described problems, and despite the fact that the side plates corresponding to the above-mentioned peripheral side walls are vertical when stacked, and exhibit a large opposing force against the overlying load, the bulky bulk is provided. It is an object of the present invention to provide a stacking member used for an underground water storage tank or the like which can be transported or stored after being packed in a compact form.
[0006]
[Means for Solving the Problems]
The stacking member used for the underground water storage tank or the like according to the first aspect of the present invention is arranged side by side in a water storage space formed in a concave shape in the ground, or is used by being stacked on the side arranged side by side. A stacking member, integrally having a square side plate and a beam portion which is narrower than the side plate, has a base end located at an upper side of the side plate, and projects at a right angle from the upper side, and a pair thereof. The tip of the beam part of one is overlapped with the upper side of the side plate of the other, and the tip of the beam of the other is placed on the upper side of the side plate of one. When all the beam portions are arranged horizontally by overlapping with each other, the side portions of one side and the side portions of the other side face each other, and the beam portions horizontally arranged between the side plates are horizontal. The same that forms a bridge Consisting of a pair of synthetic resin divided body shape, it is that.
[0007]
In this stacking member, when a pair of divided bodies are combined so as to form a gate shape, each side plate of the pair of divided bodies maintains a vertical posture, and thus exerts a large opposing force against an overlying load. Further, when a large number of divided bodies are fitted in the same direction, the side plates and the beams overlap each other, resulting in a compact shape.
[0008]
The stacking member used for the underground water storage tank or the like according to the invention according to claim 2 is the stacking member according to claim 1, wherein a lower end portion of the side plate and a base end portion and a tip end portion of the beam portion in the split body. A first projection is provided on one side, and a first concave portion is provided on the other side, in which the first projection of the other divided body to be superimposed on the divided body is fitted. A second projection is provided on one of the upper side and the tip of the beam, and the second projection of the other divided body combined with the divided body to form a gate shape is fitted on the other side. A second concave portion is provided.
[0009]
In this stacking member, when the pair of divided bodies are combined so as to form a gate shape, the pair of divided bodies are positioned relative to each other by the fitting of the second projection and the second concave portion. The gate shape of the stacking member formed by the combination of is accurately determined. Further, when the gate-shaped stacking members are stacked, the upper and lower stacking members are positioned relative to each other by the fitting of the first protrusion and the first recess, so that the stacking members can be stacked easily in multiple stages.
[0010]
The stacking member used in the underground water storage tank or the like according to the third aspect of the present invention is the stacking member according to the first or second aspect, wherein the side plates of the divided body have a large number of ribs arranged in the width direction. In addition, the beam portion of the divided body has a large number of ribs arranged in the width direction.
[0011]
By doing so, the ribs increase the strength of the side plates and beams, and further improve the opposing force with respect to the overload.
[0012]
The stacking member used for the underground water storage tank or the like according to the invention according to claim 4 is the stacking member according to any one of claims 1, 2, and 3, wherein the first member is provided at a lower end of the side plate in the divided body. A projection is provided downward, and a groove-like shape is formed in which the first projection of the other divided body overlapped with the divided body is fitted to each of the base end and the distal end of the beam portion in the divided body. The first recess is provided upward.
[0013]
With this configuration, when the gate-shaped stacking members formed by the combination of the pair of divided bodies are stacked, the upper and lower stacking members are positioned relative to each other by the fitting of the first projection and the first recess. Therefore, the stacking members can be easily stacked in multiple stages.
[0014]
The stacking member used in the underground water storage tank or the like according to the fifth aspect of the present invention is the stacking member according to any one of the first, second, third, and fourth aspects, wherein the tip of the beam portion in the split body is provided. The second projection is provided downward on the portion, and the groove-shaped second projection is fitted on the upper side of the side plate with the second projection of the other divided body combined with the divided body to form a gate shape. That is, the concave portion is provided upward.
[0015]
With this configuration, when the pair of divided bodies are combined so as to form a gate shape, the pair of divided bodies are positioned relative to each other by the fitting of the second protrusion and the second concave portion. The gate shape of the stacking member formed by the combination of the bodies is accurately determined.
[0016]
The stacking member used for the underground water storage tank or the like according to the invention according to claim 6 is arranged side by side in a water reservoir space formed in a concave shape in the ground, or is used by being stacked on the side arranged side by side. A stacking member, a side plate integrally including a pair of parallel support portions and a connecting portion provided between the support portions, and an upper end of the support portion on one side which is narrower than the side plate and one side thereof; And a beam portion projecting at a right angle from the upper end portion of the support portion, and a pair of the beam members are combined in a direction opposite to each other to form a tip of one of the beam portions. All the beam portions by overlapping the upper portion of the beam portion of the other with the upper end of the beam portion of the other one. When they are arranged horizontally, the above one side And a pair of synthetic resin segments of the same shape forming a gate shape in which the side plates of the other one are opposed to each other and horizontally arranged between the side plates to form a bridge. It is.
[0017]
In this stacking member, when a pair of divided bodies are combined so as to form a gate shape, each side plate of the pair of divided bodies maintains a vertical posture, and thus exerts a large opposing force against an overlying load. In particular, a pair of parallel struts provided on the side plate exert a large opposing force against the overload. Also, when a large number of divided bodies are stacked side by side, a compact shape is obtained.
[0018]
The stacking member used for the underground water storage tank or the like according to the invention according to claim 7 is the stacking member according to claim 6, wherein a lower end portion of the support portion on one side, a base end portion of the beam portion, and a tip end of the beam portion. Holes are provided at the lower end of the support portion on the other side and the upper end of the support portion on the other side, and are fitted into the holes overlapping each other when the divided bodies are overlapped. And a connector for positioning these holes.
[0019]
In this stacking member, when a pair of divided bodies are combined so as to form a gate shape, a coupling tool is fitted into holes overlapping each other by the combination to form the pair of divided bodies. The gate shape of the stacking member to be used is accurately determined. In addition, when the gate-shaped stacking members are stacked, the upper and lower stacking members can be positioned relative to each other by fitting the coupling tools into the mutually overlapping holes, so that the stacking members can be easily stacked in multiple stages.
[0020]
The stacking member used in the underground water storage tank or the like according to the invention according to claim 8 is the stacking member according to claim 6, wherein the lower end of the column on one side, the lower end of the column on the other side, and the tip of the beam. And a hole portion is provided in each of the portions, and the upper end portion of the support portion on one side and the upper end portion of the support portion on the other side are fitted into the corresponding hole portions when the divided bodies are overlapped. Protrusions are provided. The stacking member used for the underground water storage tank or the like according to the ninth aspect of the present invention is the stacking member according to the sixth aspect, wherein a tip portion of the beam portion, an upper end portion of the column portion on one side, and the column portion on the other side. A hole is provided at the upper end of each of the supporting members, and the lower end of the supporting portion on one side and the lower end of the supporting portion on the other side are fitted into the corresponding holes when the divided bodies are stacked. That is, a projection to be combined is provided.
[0021]
In this stacking member, when the pair of divided bodies are combined so as to form a gate shape, the projections fit into the holes overlapping each other by the combination, so that the gate of the stacking member formed by the combination of the pair of divided bodies is formed. Shape is determined exactly. Further, when the gate-shaped stacking members are stacked, the projections are fitted into the mutually overlapping holes, and the upper and lower stacking members are positioned relative to each other, so that the stacking members can be easily stacked in multiple stages.
[0022]
The stacking member used in the underground water storage tank or the like according to the invention according to claim 10 is the stacking member according to any one of claims 6, 7, 8, and 9, wherein the column is a pipe-shaped hollow. A core material having a flexural rigidity greater than the flexural rigidity of the hollow body is loaded in the internal space of the body.
[0023]
In these stacked members, since the bending rigidity of the column portion of the side plate in the divided body is increased by the core material, the column portion exerts a large opposing force against the overload.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a partially omitted longitudinal sectional view schematically showing an underground water storage tank A constructed using a stacking member 4 according to an embodiment of the present invention, and FIG. FIG. 3 is a perspective view of the divided body 40 in an opposite direction, FIG. 5 is a perspective view of the stacking member 4 forming a gate shape, and FIG. 6 is a divided body. FIG. 7 is a perspective view of a part of the stacking member 40 viewed from obliquely below, FIG. 7 is a partial front view showing the stacking members 4 stacked vertically, and FIG.
[0025]
The underground water storage tank A shown in FIG. 1 has a water storage space 1 that is formed in the ground in a concave shape by digging down the ground. In this water storage space 1, the peripheral wall surface 11 is inclined upwardly in an open manner in consideration of the angle of repose of the earth and sand forming the stratum. The bottom wall surface 12 of the water reservoir section 1 and the peripheral wall surface 11 continuous with the bottom wall surface 12 are covered with a water impermeable sheet 2 having no water permeability, and a nonwoven fabric 21 is provided on the water impermeable sheet 2. Have been. Sheets such as a vinyl chloride resin sheet, a rubber sheet, and a polyethylene resin sheet can be used as the water-impervious sheet 2.
[0026]
The aggregate 3 is mounted on the bottom wall surface 12 of the water storage space 1 via the water shielding sheet 2 and the nonwoven fabric 21. The assembly 3 is composed of a number of stacking members 4 that are arranged horizontally and stacked vertically. These stacking members 4 are composed of a pair of divided bodies 40, 40 made of a synthetic resin described later, and are formed by combining these divided bodies 40, 40 in a gate shape. The space surrounded by each of the gate-shaped individual stacking members 4 forms a space for a water pool, and these spaces communicate with each other to form one large space as a whole.
[0027]
Around the assembly 3, a vertically partitioning concrete partition wall 5 is provided. A large number of water holes 51 are formed in the partition wall 5 so as to penetrate therethrough, and water is given to the partition wall 5 by the water holes 51. In the example shown in the figure, partition walls 5, 5, which are vertically raised, are also provided at two places in the center of the water storage space 1. The partition walls 5, 5 divide the assembly 3 into two right and left parts. Have been. A water-permeable layer 6 composed of a collection of small solids is provided in the space between the partition wall 5 and the peripheral wall surface 11 and in the space between the two partition walls 5 and 5 at the center. I have. The water passage layer 6 is formed by loading crushed stone into the space. It is also possible to form this water-permeable layer 6 with pebbles such as gravel or cobblestone. Further, a water permeable layer 7 is provided on the assembly 3 and the water permeable layer 6. The permeable layer 7 is formed by laying earth and sand, and a lawn is vegetated using the permeable layer 7. It is also possible to form a car parking lot on the permeable layer 7. Note that the partition wall 5 may be made of porous concrete, and the partition wall 5 may be provided with water permeability. The thickness of the partition wall 5 is set to a thickness that can withstand the load applied to the assembly 3 and the load applied to the water-permeable layer 6 in a comprehensive manner. In addition, the partition wall 5 can be made of plastic such as FRP, whereby the weight of the partition wall can be reduced, and there is an advantage that transportation and construction are facilitated.
[0028]
The end of the surface water introduction channel 8 extending through the water-blocking sheet 2 and the water-permeable layer 6 is disposed in the water-storage space formed by the stacking member 4. The surface water introduction channel 8 receives rainwater collected from a roof of a building (not shown) through a rain gutter, rainwater collected in a gutter provided along the sidewalk of a city park, rainwater from a tennis court, or the like. It is provided for introduction into the above-mentioned space for water sump. Further, a drain groove 91 for draining water accumulated in the water gap is provided at the bottom of the water storage space 1, and the drain channel 9 is connected to the drain groove 91. The drainage channel 9 can be formed by embedding a synthetic resin pipe, and a control valve 92 is interposed in the drainage channel 9.
[0029]
In the underground water storage tank A described above, the wall 13 surrounding the water storage space 1 is not always necessary. However, when it is necessary to strengthen or stabilize the ground, the wall 13 may be formed of a discarded concrete layer having a predetermined thickness.
[0030]
The stacking member 4 is formed by preparing a pair (two) of the divided bodies 40 shown in FIGS. 3 and 4, and combining the divided bodies 40, 40 in a gate shape to form the gate shown in FIG. The stacking member 4 has a shape. The divided body 40 is integrally formed of a synthetic resin such as a polypropylene resin or a polyvinyl chloride resin.
[0031]
The divided body 40 shown in FIGS. 3 and 4 integrally has a square side plate 41 and a rectangular plate piece-like beam portion 43 projecting at right angles from an upper side portion 42 of the side plate 41. The width of the beam portion 43 is half the width of the side plate 41, and the base end 43a of such a beam portion 43 is located on the upper side 42 of the side plate 41 as shown in FIG. It protrudes at right angles from one half of one side. The side plate 41 has a large number of ribs 44 arranged in the width direction on the inside thereof, and the beam portion 43 also has a large number of ribs 45 arranged in the width direction on the inside thereof as shown in FIG.
[0032]
A first projection 46 is provided downward at a lower end of the side plate 41, specifically, at a lower end of each rib 44 provided on the side plate 41. On the other hand, groove-shaped first concave portions 47 and 48 are respectively provided on the base end portion 43a and the distal end portion 43b of the beam portion 43 in an upward direction over the entire width thereof. The first protrusions 46 of the upper divided body 40 are fitted into the first concave portions 47 and 48 when the divided bodies 40 are overlapped with each other. When the first concave portions 47 or 48 are fitted, the upper and lower divided members 40 and the gate-shaped upper and lower stacking members 4 and 4 combining the pair of divided members 40 and 40 are formed in the groove width direction of the first concave portions 47 and 48. Are positioned so that they do not move with respect to each other.
[0033]
Further, a second protrusion 49 is provided downward at a tip portion 43 b of the beam portion 43, specifically, at a tip portion of each rib 44 provided on the beam portion 43. On the other hand, the groove-shaped second concave portion 52 is provided upward over the entire length of the portion of the upper side portion 42 of the side plate 41 where the beam portion 43 does not protrude. When the pair of divided bodies 40, 40 are opposed to each other as shown in FIG. 5 and assembled in a gate shape, the second projection 49 of the mated divided body 40 fits into the second recess 52. When the second projection 49 and the second concave portion 52 are fitted, the pair of divided bodies 40, 40 are positioned so as not to move in the groove width direction of the second concave portion 52, and accurate. A portal is formed.
[0034]
When the gate-shaped stacking member 4 shown in FIG. 5 is formed by combining the pair of divided bodies 40, 40 in opposite directions, the second protrusion 49 and the second recess 52 are fitted as described above. At the same time, the tip of the beam 43 of one of the divided bodies 40 overlaps the upper side 42 of the side plate 41 of the other divided body 40. The beams 43, 43 of the two divided bodies 40, 40 are horizontally arranged, and the beams 43, 43 are opposed to the side plate 41 of the one divided body 40 and the other divided body 40, which face each other. Are placed between the side plates 41.
[0035]
The stacking member 4 of FIG. 5 in which a pair of divided bodies 40, 40 are combined in a gate shape is vertically stacked in the water storage space 1 shown in FIG. To form an aggregate 3. When the gate-shaped stacking members 4 are stacked, as shown in FIG. 7, the first projections 46 provided on the upper stacking member 4 are replaced with the first concave portions 47 and 48 provided on the lower stacking member 4. Is fitted to.
[0036]
Here, since the stacking member 4 is formed by combining the divided bodies 40 in which the side plate 41 and the beam part form a right angle in opposite directions, the stacking members 4 are stacked in the vertical direction. Each of the side plates 41, 41 of each of the divided bodies 40, 40 forming the stacking member 4, becomes vertical. Therefore, the side plate 41 exerts a large opposing force against the vertical load applied to the individual stacking members 4, and the side plate 41 is unlikely to buckle due to the load normally applied. In addition, since the side plate 41 is also reinforced by a large number of ribs 44, it exerts an extremely large opposing force against the overload, which helps to make buckling less likely to occur.
[0037]
The permeable layer 7 described with reference to FIG. 1 is formed on the uppermost one of the stacked members 4. A water-blocking sheet or the like may be used instead of the water-permeable layer 7. In addition, an opening 41a serving as a water passage may be opened in the side plate 41 of the divided body 40 as shown by a virtual line in FIG. When the opening 41a is opened, water flows through the space surrounded by the individual portal-shaped stacking members 4 arranged side by side through the opening 41a. When the opening 41a is not opened, water flows through a gap formed between the gate-shaped stacking members 4 arranged side by side.
[0038]
As shown in FIG. 8, a large number of the above-mentioned divided bodies 40 can be stacked in a fitting manner in the same direction. In this case, the side plates 41, 41 and the beams 43, 43 of the divided bodies 40, 40 fitted to each other overlap each other to form a compact shape, and a large number of divided bodies 40 do not become bulky. When a large number of divided bodies 40 are stored at the construction site of the underground water storage tank A, a very large space is not required, and the transportation cost per one divided body when transporting the divided bodies 40 by truck is reduced. .
[0039]
In the split body 40, the first protrusion may be provided at the base end 43 a and the distal end 43 b of the beam 43, and the first recess may be provided at the lower end of the side plate 41. Further, the second protrusion may be provided on the upper side of the side plate 41, and the second concave portion may be provided on the distal end 43 b of the beam 43.
[0040]
9 is a perspective view of a divided body 60 according to a modification, FIG. 10 is a cross-sectional view of the divided body 60, FIG. 11 is a perspective view of a stacking member 4A forming a gate shape, and FIG. 12 is a state where the stacking member 4A is stacked. FIG.
[0041]
The stacking member 4A is formed by preparing a pair (two) of the divided bodies 60 shown in FIG. 9, and combining the divided bodies 60, 60 in a gate shape to form the gate-shaped stack shown in FIG. It becomes member 4. The divided body 60 is integrally formed of a synthetic resin such as a polypropylene resin or a polyvinyl chloride resin.
[0042]
The divided body 60 shown in FIG. 9 has a side plate 64 integrally provided with a pair of parallel support portions 61 and 62 and a plate-like connecting portion 63 provided between the support portions 61 and 62. And a plate-like beam portion 65 which is narrower than the side plate 64 and has a base end portion 65a located at the upper end portion of the column portion 61 on one side, and projects perpendicularly from the upper end portion of the column portion 61. To have. The width of the beam 65 is substantially the same as the outer diameter of the column 61.
[0043]
As shown in FIG. 10, the pair of pillars 61 and 62 are formed by loading a core material 67 having a bending rigidity greater than the bending rigidity of the hollow body 66 into the internal space of the pipe-shaped hollow body 66. is there. The core material 67 may be any material having a bending rigidity greater than the bending rigidity of the hollow body 66, but is preferably formed into a desired shape such as waste plastic or fiber reinforced plastic. The columns 61 and 62 in which such a core material 67 is loaded in the hollow body 66 have extremely large compressive strength and bending strength. In addition, the connecting portion 63 is provided with an opening 68, and the opening 68 is useful for water flow.
[0044]
As shown in FIGS. 9, 10, 12, etc., the lower end portion of one of the pillar portions 61, the base end portion 65 a of the beam portion 65, the distal end portion 65 b of the beam portion 65, and the other side pillar portion 62. Holes 71, 72, 73, 74, and 75 are provided at the lower end of the front end and the upper end of the other pillar, respectively. In FIG. 11, reference numeral 76 denotes a connecting tool, which is formed in a columnar shape, and is fitted into the holes overlapping each other when the divided bodies 60, 60 are overlapped as shown in FIG. It serves to position those holes. One example of a combination of overlapping holes is shown in FIG. In the same figure, the hole 71 and the hole 72, the hole 74 and the hole 75, the hole 74 and the hole 73 and the hole 75 overlap each other, and the above-mentioned connection is made to each hole at the overlapping portion. The tools 76 are fitted to position these holes.
[0045]
In addition, by combining the pair of divided bodies 60 in the opposite directions, as shown in FIG. 11, the tip 65b of the beam 65 of one divided body 60 is supported on the other side of the other divided body 60. The two beam portions 65 and 65 are overlapped with each other by overlapping the top end portion 65b of the beam portion 65 of the other divided body 60 with the upper end portion of the column portion 62 on the other side of the one divided body 60. When they are arranged horizontally, the side plate 64 of one of the divided bodies 60 and the side plate 64 of the other divided body 60 are opposed to each other by the pair of divided bodies 60, and a horizontal plane is provided between the side plates 64, 64. A gate shape is formed in which the beam portions 65, 65 arranged side by side are suspended. Then, when the pair of divided bodies 60, 60 are combined in a gate shape in such a manner, the holes 73 and 75 overlap, and the coupling tool 76 is fitted into the overlapping portion, so that the pair of divided bodies 60, 60 are combined. 60 is positioned immovably to form a precise portal.
[0046]
The stacking member 4A of FIG. 11 in which a pair of divided bodies 60, 60 are combined in a gate shape is vertically stacked in the sump space 1 shown in FIG. To form an aggregate 3.
[0047]
Here, since the stacking member 4A is formed by combining the divided bodies 60 in which the side plates 64 and the beam portions 65 make a right angle in opposite directions, the stacking members 4A are vertically stacked as shown in FIG. In this state, each of the side plates 64, 64 of the individual divided bodies 60, 60 forming the respective stacking members 4A is vertical. However, each of the side plates 64, 64 is vertical, but the connecting member 76 is not necessarily required to be vertical, and its shape is not particularly limited. Since the entire side plate 64 is vertical, the columns 61 and 62 of the side plate 64 exert a large opposing force against a vertical load applied to the individual stacking members 4A, and the side plate 64 receives the normal load. Buckling is less likely to occur due to the overload. In addition, since the support portions 61 and 62 are reinforced by the core member 67 as described with reference to FIG. 10, the support portions 61 and 62 exert an extremely large opposing force against the overload.
[0048]
The water-permeable layer 7 described in FIG. 1 is formed on the uppermost one of the stacked stacking members 4A via a water-permeable sheet or the like. A water-permeable sheet or the like may be used instead of the water-permeable layer 7, and in that case, there is no need to use a water-permeable sheet. Further, since the opening 68 is formed in the side plate 64 of the divided body 60, water flows through the space surrounded by the individual portal-shaped stacking members 4A arranged sideways through the opening 68.
[0049]
The above-mentioned divided body 60 can be stacked compactly with a large number of the same being oriented in the same direction. In this case, since a large number of divided bodies 60 do not become bulky, a large space is not required when storing a large number of divided bodies 60 at a factory or a construction site of the underground water storage tank A. The cost of transporting one divided body when transporting 40 is reduced.
[0050]
FIG. 13 shows another modified example of the divided body 60.
[0051]
The difference between the divided body 60 and the one described with reference to FIGS. 9 to 12 is that holes are formed at the lower end of the column 61 on one side, the lower end of the column 62 on the other side, and the tip 65 b of the beam 65. Portions 81 and 83 (a hole at the lower end of the other pillar 62 is not shown in the drawing) are provided at the upper end of the one pillar 61 and the upper end of the other pillar 62. Protrusions 85 and 86 are provided that are fitted into holes 81 and 83 (including holes at the lower end of the column 62 on the other side) that correspond when the two divided bodies 60 and 60 are overlapped. Is a point. Other items are the same as those described with reference to FIGS. 9 to 12, and therefore, the same portions are denoted by the same reference characters and will not be described in detail.
In the divided body 60 of FIG. 13 as well, similarly to the divided body 60 described in FIGS. 9 to 12, a gate-shaped stacking member can be formed, and such a stacking member can be stacked. . The protrusions 85 and 86 and the holes 81 and 83 (including the hole at the lower end of the column 62 on the other side) correspond to the holes 71 to 75 and the connector 76 described with reference to FIGS. Exhibits a similar effect. That is, an effect of positioning the pair of divided bodies 60, 60 combined in a gate shape and an effect of facilitating stacking of the gate-shaped stacking members are exhibited.
[0052]
Holes are provided at the tip 65b of the beam 65, the upper end of the column 61 on one side, and the upper end of the column 61 on the other side, and the lower end of the column 61 on one side and the column 62 on the other side. May be provided at the lower end portion of each of the projections to be fitted into the corresponding hole when the divided bodies 60 are stacked.
[0053]
In the underground water storage tank A described with reference to FIGS. 1 and 2, the peripheral wall surface 11 of the water storage space 1 is inclined in an upwardly open shape, but the depth of the water storage space 1 is small, and If it is difficult to collapse, the excavation may be performed so that the peripheral wall surface 11 is substantially vertical.
[0054]
In this underground water storage tank A, rainwater that has fallen on the surface of the ground is introduced into the water gaps provided in the aggregate 3 and the water-permeable layer 6 through the water-permeable layer 7, and is transmitted to the water-permeable layer 6. The infiltrated rainwater is introduced into the gap by a water hole 51 provided in the partition wall 5 and stored therein. Surface water such as rainwater collected in a gutter or the like is directly introduced into the gap through the surface water introduction channel 8. However, when the surface water contains solids such as dead leaves and earth and sand, a solid separation tank, a filtration tank, a sedimentation tank, etc. are provided in front of the underground water storage tank A to remove those solids. It is desirable to be able to separate. By doing so, clean water free of solid matter accumulates in the water gap. The water collected in the water gap can be permeated underground or drained through the drainage channel 9 as needed.
[0055]
Such an underground water storage tank A can be used to avoid a situation in which the water level of an urban river rises sharply and floods when it is hit by a torrential rain or the like. For example, the pool space 1 is emptied in advance by a warning of a torrential rain, and while the water level of the river is rising due to the torrential rain, a part of the rainwater that flows over the surface of the ground and flows into the river. If the water in the pool space 1 is discharged into the reservoir space 1 and temporarily stored, and the water level in the river falls due to the torrential rainfall, the water in the pool space 1 is discharged to the river. Floods due to ascent can be avoided. When an emergency such as a fire is required, the water stored in the water storage space 1 can be pumped up and used as fire protection water. Normally, the water in the water storage space 1 can be used for watering plants and the like. For that purpose, it is preferable to separately draw out a water fetching port from the water storage space 1.
[0056]
Also, as in the underground water storage tank A shown in FIGS. 1 and 2, the above-mentioned assembly 3 is divided into two right and left, and a space sandwiched between partition walls 5 and 5 between the left and right assemblies 3 and 3. If a water-permeable layer 6 made of a collection of small solids such as crushed stones is formed in advance, the scale of one assembly 3 can be suppressed to an appropriate scale, and the stacking member 4 is displaced by the partition wall 5. Not only does the function of fixing so as not to be surely exerted, but also the workability of the stacking member 4 is improved. Also, when water moves from the sump gap of the left aggregate 3 to the sump gap of the right aggregate 3 after passing through the water-permeable layer 6 between the partition walls 5 and 5. The water-permeable layer 6 exerts a water purifying action as a filter. For this reason, if the water-permeable layer 6 is formed of charcoal or a special mineral, the water taken out from the water storage space of the right-side assembly 3 can be effectively utilized according to the degree of purification. Will be possible.
[0057]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, a pair of divided bodies can be combined in an accurate gate shape, and since the portal-shaped stacking members stacked vertically are securely positioned so as not to move, the stacking members can be combined. It has the effect of being easy to stack.
[0058]
Also, when a stacking member formed by combining a pair of divided bodies in a gate shape is stacked in multiple stages vertically, each divided body has a vertical side plate and exhibits a large opposing force against an overload. , Ensure that the water-reservoir space formed in a concave shape in the ground has sufficient strength to support the water-permeable layer and the water-blocking layer that are provided over the opening on the ground surface from below. It is possible to provide a stacking member used for an underground water storage tank or the like which is easy to operate.
[0059]
Furthermore, although the side plate is vertical so as to exert a large opposing force against the overlying load, the stacking member is formed by combining two identically shaped divided bodies, In addition, since each divided body has a side plate and a beam projecting at right angles from the side plate, it is possible to stack a large number of divided bodies in a compact shape, which is a problem in factories and underground water storage. To reduce the space required to store a large number of divided bodies at construction sites such as tanks and underground storage infiltration tanks, and to reduce the transportation cost per divided body when transporting divided bodies by truck. It has the effect of being useful.
[Brief description of the drawings]
FIG. 1 is a partially omitted longitudinal sectional view schematically showing an underground water storage tank constructed using a stacking member according to an embodiment of the present invention.
FIG. 2 is a plan view schematically showing an underground water storage tank.
FIG. 3 is a perspective view of a divided body.
FIG. 4 is a perspective view of the divided body turned in the opposite direction.
FIG. 5 is a perspective view of a stacking member forming a gate shape.
FIG. 6 is a perspective view of a part of the divided body as viewed obliquely from below.
FIG. 7 is a partial front view of a state in which the stacking members are stacked up and down.
FIG. 8 is an explanatory view of a state in which the stacking members are stacked.
FIG. 9 is a perspective view of a divided body according to a modified example.
FIG. 10 is a sectional view of a divided body.
FIG. 11 is a perspective view of a stacking member forming a gate shape.
FIG. 12 is an explanatory view of a state in which the stacking members are stacked.
FIG. 13 is a perspective view showing another modification of the divided body.
FIG. 14 is an explanatory view of a state where conventional container members are stacked.
[Explanation of symbols]
1 pool space
4,4A Stacking member
40 splits
41 Side plate
42 Upper side of side plate
43 Beam
43a Base end of beam
43b Tip of beam
44, 45 rib
46 First protrusion
47,48 First concave
49 Second protrusion
52 Second recess
60 splits
61, 62 prop
63 Connection
64 side plate
65 Beam
65a Base end of beam
65b Tip of beam
66 hollow body
67 core material
71, 72, 73, 74, 75 holes
76 Connector
81,83 hole
85,86 holes

Claims

A stacking member that is arranged side by side in a water reservoir space formed in a concave shape in the ground, or is used by being stacked on a side by side arranged,
It has a square side plate and a beam portion that is narrower than the side plate and has a base end located on the upper side of the side plate and protrudes at a right angle from the upper side, and the pair of members is opposed to each other. By combining the tip of the beam part of one thing with the upper side of the side plate of the other, and the tip of the beam part of the other thing with the upper part of the side plate of one thing, When the beam portions are arranged horizontally, a gate shape in which the side plates of one and the side plates of the other one face each other and the beam portions horizontally arranged between the side plates are bridged. A stacking member comprising a pair of synthetic resin divided bodies having the same shape to be formed.

A first projection is provided on one of a lower end of the side plate and a base end and a distal end of the beam in the split body, and the other split body superimposed on the split body is provided on the other side. A first recess into which the first projection is fitted;
A second protrusion is provided on one of the upper side of the side plate and the tip of the beam in the split body, and the other of the other split bodies combined with the split body to form a gate shape is provided on the other side. The stacking member according to claim 1, further comprising a second recess into which the second protrusion is fitted.

The said side plate of the said divided body is provided with the many rib arranged in the width direction, The said beam part of the said divided body is equipped with the many rib arranged in the width direction. The stacking member described in 1.

The first projection is provided downward at a lower end of the side plate in the divided body, and the other divided body superimposed on the divided body is provided at each of a base end and a distal end of the beam portion in the divided body. 4. The stacking member according to claim 1, wherein said groove-shaped first concave portion into which said first projection is fitted is provided upward.

The second projection is provided downward at the tip of the beam portion of the divided body, and the second projection of the other divided body combined with the divided body to form a gate shape is provided on the upper side of the side plate. The stacking member according to any one of claims 1, 2, 3, and 4, wherein the groove-shaped second concave portion to be fitted is provided upward.

A stacking member that is arranged side by side in a water reservoir space formed in a concave shape in the ground, or is used by being stacked on a side by side arranged,
A side plate integrally provided with a pair of parallel strut portions and a connecting portion provided between the strut portions, and a base end portion at an upper end portion of the strut portion on one side, which is narrower than the side plate and is one side. And a beam protruding at a right angle from the upper end of the supporting column, and a pair of the beams is combined in the opposite direction so that the tip of one of the beams is connected to the other of the other. When all the beam portions are horizontally arranged by overlapping the upper end portion of the support portion on one side and the tip end of the beam portion of the other one on the upper end portion of the support portion on the other side of the other one. A pair of synthetic resin of the same shape forming a gate shape in which the side plate of one thing and the side plate of the other thing face each other and the beam portions horizontally arranged between the side plates form a bridge. A stacking member comprising a divided body.

The lower end of the column on one side, the base end of the beam, the tip of the beam, the lower end of the column on the other side, and the upper end of the column on the other side. The stacking member according to claim 6, further comprising a hole provided with a hole, and a connecting member that is fitted into the holes that overlap each other when the divided bodies are overlapped and positions the holes.

Holes are respectively provided at the lower end of the column on one side, the lower end of the column on the other side, and the tip of the beam, and the upper end of the column on one side and the column on the other side. 7. The stacking member according to claim 6, wherein a projection fitted to the hole corresponding to the divided body when the divided bodies are overlapped is provided on an upper end portion.

Holes are respectively provided at the tip of the beam, the upper end of the support on one side, and the upper end of the support on the other side, and the lower end of the support on one side and the support on the other side. 7. The stacking member according to claim 6, wherein a projection fitted into the hole corresponding to the divided body when the divided bodies are stacked is provided at a lower end portion.

The said support | pillar part is a thing which loaded the core material which has bending rigidity larger than the bending rigidity of the hollow body in the internal space of the pipe-shaped hollow body. 9. The stacking member according to any one of 9.