JP2004251101A

JP2004251101A - Bag body for forming civil-engineering structure and civil-engineering structure using it and slope stabilizing construction method

Info

Publication number: JP2004251101A
Application number: JP2003206869A
Authority: JP
Inventors: Kenichi Shibata; 健一柴田; 和孝 ▲から▼▲さき▼; Kazutaka Karasaki; Kiyomi Tsuji; 清美辻; Junichi Goto; 順一後藤
Original assignee: Ashimori Industry Co Ltd
Current assignee: Ashimori Industry Co Ltd
Priority date: 2002-12-25
Filing date: 2003-08-08
Publication date: 2004-09-09
Anticipated expiration: 2023-08-08
Also published as: JP4115900B2

Abstract

PROBLEM TO BE SOLVED: To provide a bag body for a pressure-receiving plate, which does not depend upon the locational conditions of a construction site because of a light weight and excellent handling properties, for example, the bag body is built even when the locational conditions of the construction site are inferior and heavy machinery cannot be used in a mountainous section or the like, and used properly for a stabilizing construction method for a slope such as a cut. SOLUTION: Slits 11 at two places are formed at approximately the center of a cylindrical woven fabric 1A in a length approximately coinciding with the woven width of the cylindrical woven fabric 1B, the woven fabric 1B is inserted into the slits 11 and sections near to the edges of the slits 11 of the woven fabric 1A and the surface of the woven fabric 1B abutted against the slits 11 are joined by a sewing or the like. A plurality of holes 12 communicating with the inside of the woven fabric 1A from the inside of the woven fabric 1B are formed to the woven fabric 1B positioned in the woven fabric 1A while a filler port 13 for a fluid material is formed to the woven fabric 1B. COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた土木構造物及び斜面安定化工法に関し、特に、切り土等の斜面の安定化工法等の土木工法に広くかつ好適に用いることができる土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた土木構造物及び斜面安定化工法に関するものである。
【０００２】
【従来の技術】
例えば、山間部に道路や宅地等を造成する場合、山肌を削ること、すなわち、切り土を行うことがあるが、このように切り土を行った斜面は、それまであった土の重さがなくなるので膨らもうとするため、不安定となる。
【０００３】
このような切り土を行った斜面の安定化を図るため、従来より、ＰＣ鋼材等の高強度の鋼材からなるグランドアンカーを地盤中に打設し、グランドアンカーの両端部を地盤中と地表面とにそれぞれ定着することにより地盤の緩みを防止するアンカー工法が用いられている。
【０００４】
このアンカー工法では、グランドアンカーを、地表面、すなわち、切り土を行った斜面へ定着させるために、斜面上に反力構造物を設けるようにしている。
そして、反力構造物には、図１３に示すような、斜面からグランドアンカーＧを介して受圧板Ｃが受ける力の大きさに応じて、通常、数トン〜数十トン程度の重量で、十字形や矩形の全体形状を有し、グランドアンカーＧの挿通孔Ｃ１及び固定部Ｃ２を形成した、プレキャストコンクリート製の受圧板Ｃが汎用されている（例えば、特開平６−２９９５５８公報参照）。
【０００５】
【特許文献１】
特開平６−２９９５５８号公報
【０００６】
【発明が解決しようとする課題】
ところで、図１３に示すようなプレキャストコンクリート製の受圧板Ｃは、斜面上に単に設置するだけで反力構造物としての機能を奏するため、施工期間を大幅に短縮でき、また、斜面からグランドアンカーＧを介して受圧板Ｃが受ける力の大きさに応じた受圧板Ｃの重量の大小の選択を容易に行うことができる等の利点を有している。
しかしながら、その反面、プレキャストコンクリート製の受圧板Ｃは、重量が大きく、取扱性が悪いため、山間部等で施工現場の立地条件が悪く重機が使用できない場合等には、施工が不可能になったり、施工コストが上昇する等の問題があった。
【０００７】
本発明は、上記従来のプレキャストコンクリート製の受圧板Ｃの有する問題点に鑑み、軽量で、取扱性がよく、このため、施工現場の立地条件に左右されず、例えば、山間部等で施工現場の立地条件が悪く重機が使用できない場合等でも施工可能で、切り土等の斜面の安定化工法等の土木工法に広くかつ好適に用いることができる土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた土木構造物及び斜面安定化工法を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記目的を達成するため、本発明の土木構造物形成用袋体は、筒状織布に他の筒状織布の織幅に略一致する長さで２箇所の切れ目を入れ、該切れ目に他の筒状織布を挿入して、筒状織布の前記切れ目の縁近傍と該切れ目に当接する他の筒状織布の表面を接合させ、筒状織布の内部に位置する他の筒状織布に、他の筒状織布の内部から筒状織布の内部に通じる孔を形成するとともに、他の筒状織布に流動性材料の注入口を設けたことを特徴とする。
【０００９】
この場合、土木構造物形成用袋体は、希望する土木構造物の形状に応じて、２本の筒状織布を略十字形状に接合するようにしたり、４本の筒状織布を接合してなり、２本の筒状織布に貫通する、前記注入口を設けた他の筒状織布と、前記２本の筒状織布に貫通され、かつ前記注入口を設けた他の筒状織布と略平行に配置される別の筒状織布とから構成するようにしたり、さらに、複数本の筒状織布を接合してなり、複数本の筒状織布に貫通する、前記注入口を設けた他の筒状織布と、前記複数本の筒状織布に貫通され、かつ前記注入口を設けた他の筒状織布と略平行に配置される別の筒状織布とから構成することができる。
【００１０】
また、上記土木構造物形成用袋体を用いる本発明の土木構造物は、上記土木構造物形成用袋体を構成している複数の筒状織布の中に、順に流動性材料を注入して構築したことを特徴とする。
そして、土木構造物形成用袋体の交差部にアンカー定着具を設け、筒状織布の内部に充填して、筒状織布及びアンカー定着具を一体化するようにしたり、さらに、土木構造物形成用袋体の筒状織布の内部、長手方向に補強材を配して、該補強材と筒状織布の端部を固定し、筒状織布の内部に流動性材料を充填して、筒状織布、補強材及びアンカー定着具を一体化するようにすることができる。
【００１１】
また、上記土木構造物形成用袋体を用いる本発明の斜面安定化工法は、上記土木構造物形成用袋体の筒状織布を、斜面に縦横方向になるように設置したり、斜面に斜めに設置し、筒状織布の内部に流動性材料を充填することを特徴とする。
【００１２】
【発明の実施の形態】
以下、本発明の土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた土木構造物及び斜面安定化工法の実施の形態を図面に基づいて説明する。
【００１３】
［実施例１］
図１〜図７に、本発明の土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた土木構造物及び斜面安定化工法の実施例１を示す。
この実施例は、地盤の緩みを防止するアンカー工法に用いられる受圧板に本発明を適用したもので、土木構造物形成用袋体を、一方の筒状織布（以下、本明細書において、「筒状織布１Ａ」という。）の略中央に他方の筒状織布（以下、本明細書において、「筒状織布１Ｂ」という。）の織幅に略一致する長さで２箇所の切れ目１１を入れ、この切れ目１１に筒状織布１Ｂを挿入して、筒状織布１Ａに筒状織布１Ｂを貫通させ、筒状織布１Ａの切れ目１１の縁近傍とこの切れ目１１に当接する筒状織布１Ｂの表面を接着剤、熱融着、縫合等することにより接合させ、筒状織布１Ａの内部に位置する筒状織布１Ｂに、筒状織布１Ｂの内部から筒状織布１Ａの内部に通じる複数個の孔１２を形成し、筒状織布１Ｂに流動性材料としてのモルタル等の流動性固化材の注入口１３を設けて構成するようにしている。
【００１４】
この場合において、筒状織布１Ａ、１Ｂは、特に限定されるものではないが、例えば、直径４００ｍｍ程度の一定の直径を有する透水性を有する筒状の織物であって、円周方向の糸はスパイラル状に連続して織り込まれている。
そして、筒状織布１Ａ、１Ｂの経糸及び緯糸は、耐候性を有する繊維、例えば、ポリエステル繊維からなり、太さは１０００ｄ／２本、密度は経２０本／インチ、緯２０本／インチで、織組織は平織りとしている。具体的には、環状織機で織られたもので、緯糸が筒状織布の前記スパイラル状の糸を構成する。
なお、筒状織布１Ａ、１Ｂの経糸及び／又は緯糸に、高強度繊維やワイヤ等の引張強度の大きい線材を織り込むことにより、筒状織布１Ａ、１Ｂの強度を向上することができる。
【００１５】
また、図１及び図２に示すように、筒状織布１Ａの中央部には対向する位置に２箇所、長さ６００ｍｍの切れ目１１が設けられており、筒状織布１Ｂがそこを貫通するように組み立てられるようにしている。
【００１６】
筒状織布１Ａの切れ目１１の縁近傍とこの切れ目１１に当接する筒状織布１Ｂの表面の接合は、接着剤１１ａによるもので、モルタル等の流動性固化材の充填時に、接合部が剥離しやすい筒状織布１Ａの切れ目両端部のみ、筒状織布１Ａ、１Ｂを一体に縫合１１ｂするようにする。
接着剤は、一般的な低融点のナイロンやウレタン等のホットメルト系接着剤を使用する。
なお、筒状織布１Ａの切れ目１１の縁近傍とこの切れ目１１に当接する筒状織布１Ｂの表面の接合方法は、これに限定されず、例えば、図３に示す変形例のように、筒状織布１Ａの切れ目１１に当接する筒状織布１Ｂを、切れ目１１との当接位置で少しつまんで短く折り返すことにより２重にだぶらせ、この状態で、筒状織布１Ａ、１Ｂを一体に１周又はそれ以上縫製１１ｃするようにすることもでき、これにより、筒状織布１Ａ、１Ｂの接合部における変形の自由度を大きくし、接合部が剥離することを防止することができる。
【００１７】
筒状織布１Ｂの内部から筒状織布１Ａの内部に通じる複数個の孔１２は、図１に示すように、筒状織布１Ａ内部に面した筒状織布１Ｂの側面に、本実施例においては、４箇所設けられ、寸法は直径３０ｍｍに設定している。
【００１８】
筒状織布１Ｂに設けた流動性固化材の注入口１３には、必要に応じて、逆止弁１４を装着することができる。
【００１９】
そして、この土木構造物形成用袋体は、両方の筒状織布１Ａ、１Ｂの内部、長手方向に１本又は複数本の補強材としての異形棒鋼２を配して（補強材の本数と配設位置は、受圧板の荷重設計によるが、２本以上が適当で、配設位置は筒状織布１Ａ、１Ｂが膨らんだ状態でその断面の中心位置より若干下が適当である。なお、本実施例においては、各２本配設するようにしている。）、この補強材２と筒状織布１Ａ、１Ｂの端部を固定するようにしている。
また、両方の筒状織布１Ａ、１Ｂの交差部には、筒状織布１Ａ、１Ｂに固定するようにして、図５に示すアンカー定着具３を設けるようにする。
そして、筒状織布１Ｂに設けた流動性固化材の注入口１３から両方の筒状織布１Ａ、１Ｂの内部に流動性固化材８を充填して、両方の筒状織布１Ａ、１Ｂ、補強材２及びアンカー定着具３を一体化するようにしている。
なお、この場合、筒状織布１Ａの内部、長手方向に配する補強材２は、筒状織布１Ｂに形成した、筒状織布１Ｂの内部から筒状織布１Ａの内部に通じる孔１２を貫通するようにして配設するようにする。
【００２０】
筒状織布１Ａ、１Ｂの内部、長手方向に配する補強材２は、筒状織布１Ａ、１Ｂより若干長く形成した異径棒鋼で構成し、端部にねじ加工を施すようにする。そして、端部をねじ加工した棒鋼を、図１及び図４に示すような２枚の金属板４１、４２（金属板４２の片面には内側に雌ねじ加工が施されている。）及びリング４３からなる端末金具４と、ナット２１（又は図１に示すように、端末金具４の金属板４１Ｘに植設した雌ねじ部材４１ｂ）を用いて固定するようにしている。
なお、本実施例においては、補強材２として、異径棒鋼を用いるようにしているが、このほか、通常の丸棒鋼やＨ型鋼等の形鋼等、任意の断面形状のものを用いることができ、さらには、材質も鋼材製のもののほか、ＦＲＰ製のもの等を用いることができる。
【００２１】
そして、端末金具４には、筒状織布１Ａ、１Ｂの端部を、端末金具４の２枚の金属板４１、４２の間にリング４３を介して挟持し、ボルト４４を金属板４２に形成したねじ孔４２ａに螺合して締め付けることにより、取り付けるようにしている。
この端末金具４の構造により、土木構造物形成用袋体を斜面に設置して筒状織布１Ａ、１Ｂの内部に流動性固化材を充填する際、筒状織布１Ａ、１Ｂに張力をかけることができる。
さらに、片端のねじにナットを固定（溶接、ダブルナット等）した補強材２を用いれば、金属板４２に雌ねじ加工が施されているため、解除する方向にナットを回せば、筒状織布１Ａ、１Ｂをより強固に展張することができる。
これらによって、筒状織布１Ａ、１Ｂがだぶつかず、形状を保持しながら流動性固化材を充填することができる。
【００２２】
アンカー定着具３は、図５に示すように、２枚のフランジ３１、３２とリング３３を両端部に有する筒状金具からなる。
そして、このアンカー定着具３を、筒状織布１Ａ、１Ｂの交差部の上下両面に形成した装着孔１５に挿入し、筒状織布１Ａ、１Ｂの装着孔１５の周縁を、アンカー定着具３のフランジ３２上にリング３３を介して挟持し、フランジ３１に形成したねじ孔３１ａにボルトを螺合してリング３３を締め付けることにより、取り付けるようにしている。
アンカー定着具３の高さは、両端の筒状織布１Ａ、１Ｂを挟み込むフランジ３２、３２間の距離が、筒状織布１Ａ、１Ｂの直径に略等しいかそれよりも若干小さい寸法となるように設定する。
【００２３】
次に、この土木構造物形成用袋体を用いる斜面安定化工法について、図６及び図７を用いて説明する。
まず、筒状織布１Ａの内部、長手方向に配する補強材２は、筒状織布１Ｂに形成した、筒状織布１Ｂの内部から筒状織布１Ａの内部に通じる孔１２を貫通するようにして配設し、両端を、筒状織布１Ａの端部とともに、端末金具４によって固定する。
筒状織布１Ａに補強材２が挿入され、筒状織布１Ｂの流動性固化材の注入口１３に逆止弁１４が装着された状態で、筒状織布１Ｂを筒状織布１Ａに巻き付けるようにしてコンパクトな状態でその他の金具類等とともに工場から施工現場に出荷される（図７（ｂ））。
【００２４】
そして、施工現場では、土木構造物形成用袋体を、筒状織布１Ｂの両端の端末金具４の金属板４１に設けられたリング４１ａを利用してクレーン等を用いて吊り上げ（図７（ｃ））、筒状織布１Ａ、１Ｂを斜面に縦横方向に、すなわち、筒状織布１Ａを斜面の等高線方向に、筒状織布１Ｂを筒状織布１Ａと直交する方向になるように設置し（この場合、流動性固化材の注入口１３が斜面の上方に位置するように設置する。）、端末金具４の金属板４１に設けられたリング４１ａを利用して筒状織布１Ａをアンカー５により斜面に仮固定する（図６（ａ））。
なお、本実施例においては、筒状織布１Ａ、１Ｂを斜面に縦横方向に設置するようにしたが、これに限定されず、例えば、図１２に示すように、複数本の筒状織布１Ｆを略格子状に接合する構造とした場合等には、各筒状織布１Ｆを斜面に斜め方向に、すなわち、筒状織布１Ａ、１Ｂを斜面の等高線に対して、略４５゜の角度をなす方向に設置するようにすることもできる。
筒状織布１Ｂの内部に配する補強材２は、施工現場で挿入され、両端を、筒状織布１Ｂの端部とともに、端末金具４によって固定する。
この場合、筒状織布１Ｂの内部は、単に筒状の空洞があるだけなので補強材２を容易に挿入できる。
そして、筒状織布１Ｂの端末金具４の金属板４１に設けられたリング４１ａを利用して筒状織布１Ｂをアンカー５により斜面に仮固定する（図６（ｂ））。
【００２５】
なお、予め工場で筒状織布１Ｂの内部に配する補強材２を組み込み、両端を、筒状織布１Ｂの端部とともに、端末金具４によって固定することもできる。
この場合も、略十字形状の土木構造物形成用袋体を筒状織布１Ａと筒状織布１Ｂの交差角が小さくなるように折り畳むことにより、コンパクトな状態で工場から施工現場に出荷することができる。
【００２６】
次に、アンカー定着具３を、筒状織布１Ａ、１Ｂの交差部の上下両面に形成した装着孔１５に挿入、取り付ける。
なお、予め工場でアンカー定着具３を取り付けることもできる。
アンカー定着具３には、ＰＣ鋼材等の高強度の鋼材からなるグランドアンカー６を地盤中に打設し、グランドアンカー６の下端部を地盤中に定着する（図６（ｃ））。
【００２７】
この状態で、流動性固化材ポンプ７１を介して流動性固化材プラント７に接続したホース７２を流動性固化材の注入口１３に接続し、流動性固化材の注入口１３から流動性固化材を注入することにより、両方の筒状織布１Ａ、１Ｂの内部に流動性固化材を充填する（図６（ｂ）、図７（ａ））。
この場合、流動性固化材の注入口１３から注入された流動性固化材８は、筒状織布１Ｂの下方から次第に充填され、筒状織布１Ａ、１Ｂの交差部を超えた時点で、筒状織布１Ｂの内部から筒状織布１Ａの内部に通じる孔１２を通して筒状織布１Ａにも充填され始める。
このため、交差部では筒状織布１Ａが十分膨らんだ状態が保たれつつ筒状織布１Ｂに流動性固化材８が充填されていき、最終的に筒状織布１Ｂに流動性固化材８が完全に充填されれば、流動性固化材の注入口１３から注入ホースを取り除いて注入作業を完了する。なお、流動性固化材の注入口１３に逆止弁１４を装着することにより、流動性固化材の流出事故を防止することができる。
【００２８】
筒状織布１Ａ、１Ｂに充填する流動性固化材には、例えば、一般的なポルトランドセメントを用いた通常のモルタルを使用し、最終的な注入圧をやや高めにして筒状織布１Ａ、１Ｂの織目を通して脱水させ、内部の流動性固化材８をち密にして早期に硬化させ、ブリージング等による硬化後の体積減少がないようにする。なお、注入圧は、０．３ＭＰａ程度が適当である。
硬化後の体積減少がない特殊モルタルを使用した場合は、脱水の必要がなく、注入圧はやや低くても構わないが、斜面に設置されているため、ある程度の圧力をかけないと斜面の等高線方向（水平方向）の筒状織布１Ａの断面が流動性固化材の自重で歪な形にとどまってしまうことがある。略円形にするためには、０．１ＭＰａ程度の注入圧が必要である。
また、ここでは、流動性固化材８として、モルタルを例に挙げて説明したが、流動性固化材８としては、このほか、セメントペーストやコンクリート等のセメント系固化材や樹脂系硬化材等の耐候性を有する固化材を用いることができる。
【００２９】
筒状織布１Ａ、１Ｂの表面に、耐候性を付与するための塩化ビニル樹脂、アスファルト等の表面処理が施されている場合は、織目から脱水できないので、硬化後の体積減少がない特殊流動性固化材を使用する。
なお、耐候性を付与するための筒状織布１Ａ、１Ｂの表面処理は、筒状織布１Ａ、１Ｂに充填した流動性固化材８が硬化した後に施すことができる。
【００３０】
このほか、筒状織布１Ａ、１Ｂの表面に、難燃処理等を施すことができる。
【００３１】
最後に仮アンカー５を除去し、流動性固化材８が完全に硬化した時点でグランドアンカー６の両端部を地盤中とアンカー定着具３とにそれぞれ定着して施工を完了する（図６（ｄ））。
なお、筒状織布１Ａ、１Ｂの端末金具４は、そのままにしておいてもよいが、流動性固化材８が硬化した後撤去して再利用することもできる。この場合、端部からはみ出た補強材２は必要に応じて切断して除去する。
【００３２】
［実施例２］
上記実施例１と同じ筒状織布１Ａ、１Ｂを用い、両端部を斜めに切断する。
斜めに切断した端部を、実施例１と同様、端末金具４で補強材２と一体に固定する。
筒状織布１Ａ、１Ｂ共に、斜めに切断した長い面が下面側（地山側）になるようにする。
そして、筒状織布１Ａ、１Ｂの上面側と補強材２の端末金具４間の距離とを略同じに設定すると、筒状織布１Ａ、１Ｂの下面側の長さが上面側より長くなるため、たるんだ状態になる。
受圧板が設置される斜面は、表面状態が平滑であるとは限らず、かなり凸凹した状態であることも多く不陸があるため、受圧板と斜面間に空隙が生じ、グランドアンカー６の反力構造体として斜面に均等な荷重がかからず、また、受圧板自体も不均等な荷重を受けるため強度が弱くなる。
筒状織布１Ａ、１Ｂの下面にたるんだ部分があると、筒状織布１Ａ、１Ｂの両端末はアンカー５で斜面に仮固定されており、アンカー定着具３にはグランドアンカー６が打ち込まれているので、流動性固化材が注入されることで筒状織布１Ａ、１Ｂの下面は斜面の凹凸に沿って膨らむことができ、不陸調整を自動的に行うことができる。
なお、その他の構成は、実施例１と同じである。
【００３３】
［実施例３］
図８に示すように、筒状織布１Ａ、１Ｂに、直径が長手方向に亘って変化した織物を用い、それ以外は実施例１と同じである。
筒状織布１Ａ、１Ｂの直径は、特に限定されるものではないが、例えば、中央部が直径６００ｍｍのストレート部（長さ６００ｍｍ）から、両側にテーパー状に直径が変化し（長さ１８００ｍｍ）、両端は直径４００ｍｍとなった後、再度ストレート部（長さ２００ｍｍ）が形成されるように設定されている。
筒状織布１Ａ、１Ｂの組み立て、接合、筒状織布１Ｂ内部から筒状織布１Ａ内部に通じる孔１２、流動性固化材の注入口１３、補強材２、アンカー定着具３、端末金具４、受圧板の施工は、実施例１と同じで、アンカー定着具３の高さも、実施例１と同じく、両端の筒状織布１Ａ、１Ｂを挟み込むフランジ３２、３２間の距離が、筒状織布１Ａ、１Ｂの直径に略等しいかそれよりも若干小さい寸法となるように設定する。
流動性固化材の注入後の受圧板の形状は、中央が幅・高さとも大きく、十字の端部側へいくに従いテーパー状に小さくなる。テーパー形状は受圧板の設計手法により曲げモーメントの分布に応じて設定されている。
テーパーを有した筒状織布１Ａ、１Ｂで土木構造物形成用袋体を形成し受圧板として施工した場合、斜面に置かれた状態で、筒状織布１Ａ、１Ｂの両端の端末金具４及び補強材２が自重で筒状織布１Ａ、１Ｂの断面中心より下方に下がる。
したがって、筒状織布１Ａ、１Ｂの下面側は筒状織布１Ａ、１Ｂが長手方向にたるんだ状態となる。このたるみは実施例２と同じく不陸調整に用いることができる。
なお、その他の構成は、実施例１と同じである。
【００３４】
［実施例４］
上記実施例１と同じ筒状織布１Ａ、１Ｂを用い、組み立て等も同様に行うが、図９に示すように、筒状織布１Ａと筒状織布１Ｂの接合を下記の手順で行う。
長さ２００ｍｍの短尺筒状織布１Ｃを用意し、長手方向の中央まで表裏が逆になるように折り返して当て布１Ｃ’を作成する。
筒状織布１Ａの切れ目に、当て布１Ｃ’を挿入し、当て布１Ｃ’の一方の縁（外周側）を筒状織布１Ａの切れ目１１の縁近傍と一体に縫合し、もう一方の縁（内周側）を切れ目１１に当接する筒状織布１Ｂの表面と一体に縫合する。
このようにして、長手方向の中央で折り返した当て布１Ｃ’を介して筒状織布１Ａ、１Ｂを接合することで、流動性固化材を注入することによって筒状織布１Ａ、１Ｂが膨らんだとき、当て布１Ｃ’が緩衝作用をもたらし、接合部が一層破れにくくなる。
なお、その他の構成は、実施例１と同じである。
【００３５】
［実施例５］
上記実施例１と同じ筒状織布１Ａ、１Ｂを用い、組み立て、接合等も同様に行うが、図１０に示すように、筒状織布１Ａ、１Ｂの下面に重なるようにして筒状織布１Ｃ、１Ｄからなる略十字形状の袋体を配設する。
なお、筒状織布１Ｃ、１Ｄを配設することに代えて、筒状織布１Ａ、１Ｂの下面部を流動性固化材の注入空間を備えた２層構造とすることもできる。
この筒状織布１Ｃ、１Ｄには補強材を挿入せず、端末金具を用いず単に縫合によって閉じるだけでありそれ以外は筒状織布１Ａ、１Ｂと同じ構成である。
筒状織布１Ｃ、１Ｄの十字の中央部は、アンカー定着具３により、筒状織布１Ａ、１Ｂの下面側の取り付けとともに一体に固定されている。
そして、筒状織布１Ａ、１Ｂへの流動性固化材の注入後に、筒状織布１Ｃ、１Ｄの適宜箇所に形成した流動性固化材の注入口（図示省略）から筒状織布１Ｃ、１Ｄ内に流動性固化材を注入する。筒状織布１Ｃ、１Ｄへの流動性固化材の注入は、袋体に圧力がほとんど加わらない状態で行い、筒状織布１Ｃ、１Ｄの織布表面は、筒状織布１Ａ、１Ｂの形状及び地山の凹凸に沿って広がるようにする。
このようにして、地山に不陸が大きく存在する場合でも、筒状織布１Ｃ、１Ｄによる不陸調整機能で受圧板と地山の間隙を埋めることができる。また、筒状織布１Ａ、１Ｂは、断面が略円形に膨らむため、実施例２や実施例３のように下面にたるみを取っていないと地山に接する部分が少なくなるが、筒状織布１Ｃ、１Ｄにより筒状織布１Ｃ、１Ｄの下面と地山の隙間自体も埋めることができる。このようにして、受圧板と地山の荷重伝達が円滑に行われる構造となる。
なお、その他の構成は、実施例１と同じである。
そして、この実施例のものは、切り土を施さない法面でも設置、施工を行うことができる。
【００３６】
次に、上記実施例の土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた土木構造物及び斜面安定化工法の作用について説明する。
上記土木構造物形成用袋体によれば、筒状織布１Ａに筒状織布１Ｂを貫通し、織布表面同士を接合させ、筒状織布１Ｂに筒状織布１Ａの内部に通じる孔１２を設け、筒状織布１Ｂには流動性固化材の注入口１３を設けるようにしているため、流動性固化材の注入口１３から注入された流動性固化材８は、交差部において筒状織布１Ｂを十分膨らませてから筒状織布１Ａに注入される。先に筒状織布１Ａに流動性固化材が注入されてしまうと筒状織布１Ｂが交差部で膨らみきれなくなるが、この交差部の構造であれば交差部内部の筒状織布１Ｂが膨らみきらない状態が発生せず、円滑な流動性固化材の注入と安定した筒状織布１Ａ、１Ｂの膨らみが実現する。
これにより、硬化した後の流動性固化材８の表面を、筒状織布１Ａ、１Ｂの連続した繊維で補強し、交差部においては２重に補強することになる。その結果、流動性固化材の注入時の布型枠として良好な機能が得られるだけでなく、一般に表面クラックや欠けが発生しやすい構造物表面の強化にも有効に機能する。
【００３７】
また、受圧板の施工場所へ、袋の状態でコンパクトにたためて持ち込め、プレキャストコンクリート製の受圧板と比べてはるかに軽量であるため、部材の運搬等の問題から現場立地条件が悪い場合でも、施工が容易になる。
【００３８】
筒状織布１Ａ、１Ｂの内部に補強材２を配して端部で一体に固定し、筒状織布１Ａ、１Ｂの貫通する箇所にアンカー定着具３を設け、内部が流動性固化材８で充填されて一体に成形された受圧板は、全体が一体に成形された構造物となり、グランドアンカー６の斜面への定着のための反力構造物として有効に機能する。
筒状織布１Ａと筒状織布１Ｂの表面の接合が接着剤等によるもので、筒状織布１Ａの切れ目１１の両端部のみ筒状織布１Ａ、１Ｂを一体に縫合してあると、流動性固化材の注入時に多少注入圧を高くして筒状織布１Ａの膨らみにより切れ目１１が大きくなっても、筒状織布１Ｂは縫合部により引っ張られ、その間に隙間ができることがなく、流動性固化材の漏れが発生しない。
【００３９】
長手方向の中央で表裏が逆となるように折り返した当て布１Ｃ’を介して筒状織布１Ａ、１Ｂを接合することで、流動性固化材を注入することによって筒状織布１Ａ、１Ｂが膨らんだとき、当て布１Ｃ’が緩衝作用をもたらし、筒状織布１Ａ、１Ｂの互いの膨らみによる動きが接合部において直接相互に影響せず、接合部が一層破れにくくなって流動性固化材の漏れがより発生しにくくなる。
【００４０】
補強材２は、端部がねじ加工されて端末金具４に固定され、筒状織布１Ａ、１Ｂ端部も端末金具４によって挟持されるようにして取り付けられているので、袋体が膨らんだ状態において、補強材は予め設計された適当な本数が適当な位置に配置されることになる。また、端末金具４は流動性固化材８の硬化後撤去することができ、再利用することも可能である。
また、補強材２に異形棒鋼を用いることにより、流動性固化材８との付着、一体性を向上することができる。
【００４１】
筒状織布１Ａ、１Ｂの交差部は、流動性固化材の注入により筒状織布の他の部分より大きく膨らみ、このまま流動性固化材が固化すると、交差部の周囲において筒状織布に括れができてしまい、構造物として応力が集中しやすい形状となってしまう。アンカー定着具３の高さが、筒状織布１Ａ、１Ｂの直径に略等しいかそれよりもやや小さい寸法となっていると、アンカー定着具３がその膨らみを抑え、十字の表面の形状を滑らかなものとなり、応力集中問題が生じない。
【００４２】
筒状織布１Ａ、１Ｂが、長手方向に直径の変化した織物であり、中央部の径が大きく両端部に向かってテーパー状に小さくなっている場合は、略十字形状の受圧板に加わる曲げモーメントの分布に応じて受圧板の剛性を設計することができ、経済的である。
【００４３】
筒状織布１Ａ、１Ｂの下面にたるみを設けてある場合は、流動性固化材の注入により不陸調整が自動で行われ、多少の凹凸がある地山に対しても受圧板下面が沿った状態で形成される。
【００４４】
また、筒状織布１Ａ、１Ｂの下面に重なるようにして筒状織布１Ｃ、１Ｄからなる略十字形状の袋体を設け、不陸調整用の袋とすると、地山の凹凸が大きい場合でも筒状織布１Ｃ、１Ｄの下面が地山の凹凸に密着し、１Ａ、１Ｂの筒状織布に高い注入圧で流動性固化材を注入しても、筒状織布１Ｃ、１Ｄの上面が筒状織布１Ａ、１Ｂに密着して、受圧板と地山の荷重伝達を円滑にする。
【００４５】
ここまで、本発明の土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた受圧板及び斜面安定化工法を、地盤の緩みを防止するアンカー工法に用いられる受圧板に適用した複数の実施例に基づいて説明したが、本発明の適用対象は、受圧板に限定されるものでなく、各種土木構造物に、広く適用することができる。
【００４６】
具体的には、この土木構造物形成用袋体を受圧板として用いる場合には、上記のとおり、２本の筒状織布１Ａ、１Ｂを略十字形状に接合する構造とするが、このほか、図１１に示すように、上部構造物Ｓの沈下防止や地震時における地盤の液状化防止を目的とする地盤安定化工法の基礎部材（地上に設置されるもののほか、海中に設置されるものも含む。）として用いる場合には、４本の筒状織布１Ｅを略井桁状に接合する構造としたり、また、図１２に示すように、処分場の軟弱地盤の補強工法、法面安定化工法、藻（海草）場造成工法（藻場造成シート押さえ用ジャケット）等の広い範囲に適用される土木構造物（地上に設置されるもののほか、海中に設置されるものも含む。）として用いる場合には、複数本の筒状織布１Ｆを略格子状に接合した構造とする等、形成しようとする土木構造物に応じて、任意の形状に組み合わせて用いることができる。
そして、図１１に示すように、４本の筒状織布１Ｅを略井桁状に接合する構造の場合には、流動性材料の注入口１３を備える筒状織布１Ｅ１が、２本の筒状織布１Ｅ２を貫通するように組み立て、さらに２本の筒状織布１Ｅ２が１Ｅ１と同じ方向に配した別の筒状織布１Ｅ３に貫通する形状に組み立てる。そして、筒状織布１Ｅ１、１Ｅ２にはそれぞれ筒状織布１Ｅ２、１Ｅ３に通じる孔１２を設けておく。この構造によると、流動性材料の注入口１３から注入された流動性材料は、筒状織布１Ｅ１の中に充填された後、孔１２を通じて筒状織布１Ｅ２の中に充填され、最後に筒状織布１Ｅ３の中に充填されるので、交差部において筒状織布１Ｅ１と１Ｅ２の間及び筒状織布１Ｅ２と１Ｅ３の間に流動性材料が充填されることがなく、すべての交差部を十分に膨張させることができる。
また、図１２に示すように、複数本の筒状織布１Ｆを略格子状に接合する構造の場合には、筒状織布１Ｆ１に設けた流動性材料の注入口１３から注入した流動性材料を、筒状織布１Ｆ１の内部から筒状織布１Ｅ２の内部に通じる孔を通して複数本の筒状織布１Ｆ２に充填し、さらに、筒状織布１Ｆ２の内部から筒状織布１Ｆ３の内部に通じる孔を通して複数本の筒状織布１Ｆ３に充填するようにする。
さらに、土木構造物形成用袋体を藻場造成シート押さえ用ジャケットとして用いる場合には、土木構造物形成用袋体を生分解性繊維で織成された筒状織布で構成するとともに、筒状織布に充填する流動性材料としてスラリー状の砂や汚泥等を用いることにより、藻場が完成した後に、筒状織布が自然分解して現場に残らないようにすることもできる。
【００４７】
以上、本発明の土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた受圧板及び斜面安定化工法について、複数の実施例に基づいて説明したが、本発明の土木構造物形成用袋体並びにこの土木構造物形成用袋体を用いた受圧板及び斜面安定化工法の構成は、上記実施例に記載したものに限定されるものではなく、上記各実施例に記載した構成を適宜組み合わせる等、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものである。
【００４８】
【発明の効果】
本発明の土木構造物形成用袋体は、コンパクトにたたんで施工現場に持ち込むことができ、プレキャストコンクリート製の受圧板等の従来の土木構造物形成用部材と比べてはるかに軽量で、取扱性がよく、このため、施工現場の立地条件に左右されず、例えば、山間部等で施工現場の立地条件が悪く重機が使用できない場合等でも施工可能で、切り土等の斜面の安定化工法等の土木工法に広くかつ好適に用いることができる。
また、流動性材料を他の筒状織布に形成した孔を介して、当該他の筒状織布に接合した別の筒状織布の中に円滑に充填することができ、安定した形状で筒状織布が膨らむので、応力集中の起こらない土木構造物が得られ、筒状織布に充填した流動性材料が硬化した後は筒状織布による構造物表面の補強機能を併せ奏することができる。
【００４９】
この場合、土木構造物形成用袋体は、希望する土木構造物の形状に応じて、２本の筒状織布を略十字形状に接合するようにしたり、４本の筒状織布を接合してなり、２本の筒状織布に貫通する、前記注入口を設けた他の筒状織布と、前記２本の筒状織布に貫通され、かつ前記注入口を設けた他の筒状織布と略平行に配置される別の筒状織布とから構成するようにしたり、さらに、複数本の筒状織布を接合してなり、複数本の筒状織布に貫通する、前記注入口を設けた他の筒状織布と、前記複数本の筒状織布に貫通され、かつ前記注入口を設けた他の筒状織布と略平行に配置される別の筒状織布とから構成することができ、これにより、本発明の土木構造物形成用袋体を、受圧板を始めとする各種土木構造物の形成に、広く適用することができる。
【００５０】
また、この土木構造物形成用袋体を用いた土木構造物は、筒状織布に充填した流動性材料が硬化した後は、筒状織布及びアンカー定着具、さらには補強材が一体化し、他の筒状織布の内部から当該他の筒状織布に接合した別の筒状織布の内部に通じる孔を介して、固化した流動性固化材が連続した構造物になることとも相俟って、設計上も適切な形状及び強度を有する構造物となり、グランドアンカーの斜面への定着のための反力構造物として有効に機能し、長年の使用に亘って構造物表面のクラック等による欠けの発生を防止することができる。
【００５１】
また、この土木構造物形成用袋体を用いた斜面安定化工法は、筒状織布を斜面に縦横方向になるように設置したり、斜め方向に設置することにより、筒状織布の内部に流動性材料を極めて円滑に充填することができ、斜面安定化の機能を安定して得ることができる。
【図面の簡単な説明】
【図１】本発明を受圧板に適用した実施例１を示す分解図である。
【図２】同交差部の説明図である。
【図３】同交差部の変形例の説明図で、（ａ）は交差部の組み立て工程の説明図、（ｂ）は交差部の断面図である。
【図４】同受圧板の部分説明図で、（ａ）は交差部の内部説明図、（ｂ）は端部説明図、（ｃ）は交差部の縦断面説明図である。
【図５】同アンカー定着具の説明図で、（ａ）は外観斜視図、（ｂ）は部分断面図である。
【図６】本発明の斜面安定化工法の施工工程の説明図である。
【図７】本発明の斜面安定化工法の施工工程の説明図である。
【図８】本発明を受圧板に適用した実施例３の説明図で、（ａ）は土木構造物形成用袋体の外観斜視図、（ｂ）は正面断面図、（ｃ）は側面断面図、（ｄ）は平面図である。
【図９】本発明を受圧板に適用した実施例４の交差部の組み立て工程の説明図である。
【図１０】本発明を受圧板に適用した実施例５の正面断面図である。
【図１１】４本の筒状織布を略井桁状に接合した実施例を示す説明図である。
【図１２】複数本の筒状織布を略格子状に接合した実施例を示す説明図である。
【図１３】従来のアンカー工法の例を示す説明図である。
【符号の説明】
１Ａ筒状織布
１Ｂ筒状織布
１Ｃ筒状織布
１Ｄ筒状織布
１Ｅ筒状織布
１Ｆ筒状織布
１１切れ目
１２孔
１３注入口
１４逆止弁
１５アンカー定着具の装着孔
２補強材（異形棒鋼）
３アンカー定着具
４端末金具
５端末金具
６グランドアンカー
７流動性固化材プラント
７１流動性固化材ポンプ
７２ホース
８流動性固化材（モルタル）[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a civil engineering structure forming bag, and a civil engineering structure and a slope stabilization method using the civil engineering structure forming bag, and particularly to a civil engineering method such as a stabilization method for slopes such as cut soil. The present invention also relates to a civil engineering structure forming bag which can be suitably used, a civil engineering structure using the civil engineering structure forming bag, and a slope stabilization method.
[0002]
[Prior art]
For example, when constructing a road or a residential area in a mountainous area, the mountain surface may be cut, that is, cut may be performed. It becomes unstable because it tries to expand because it disappears.
[0003]
Conventionally, ground anchors made of high-strength steel such as PC steel have been cast into the ground to stabilize the slopes that have undergone such cuts, and both ends of the ground anchors have been grounded into the ground and the ground surface. An anchor method is used to prevent loosening of the ground by fixing each of them.
[0004]
In this anchor method, a reaction force structure is provided on the slope in order to fix the ground anchor to the ground surface, that is, the cut slope.
The reaction force structure usually has a weight of about several tons to several tens tons depending on the magnitude of the force received by the pressure receiving plate C from the slope via the ground anchor G as shown in FIG. A pressure-receiving plate C made of precast concrete, which has an overall shape of a cross or a rectangle and has an insertion hole C1 and a fixing portion C2 of a ground anchor G, is widely used (for example, see Japanese Patent Application Laid-Open No. 6-299558).
[0005]
[Patent Document 1]
JP-A-6-299558
[0006]
[Problems to be solved by the invention]
By the way, the pressure receiving plate C made of precast concrete as shown in FIG. 13 functions as a reaction force structure simply by being installed on the slope, so that the construction period can be greatly shortened, and the ground anchor can be installed from the slope. There is an advantage that the magnitude of the weight of the pressure receiving plate C can be easily selected according to the magnitude of the force received by the pressure receiving plate C via G.
However, on the other hand, the pressure receiving plate C made of precast concrete has a large weight and is difficult to handle. Therefore, when the location of the construction site is poor in mountainous areas and heavy equipment cannot be used, construction becomes impossible. And increased construction costs.
[0007]
The present invention is light in weight and has good handleability in view of the above-mentioned problems of the conventional pressure-receiving plate C made of precast concrete, and is therefore not affected by the location conditions of the construction site. A bag for forming a civil engineering structure which can be constructed even when heavy equipment cannot be used due to poor location conditions, and which can be widely and suitably used for civil engineering methods such as stabilization of slopes such as cut soil, and this civil engineering structure An object of the present invention is to provide a civil engineering structure and a slope stabilization method using a forming bag.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the civil engineering structure forming bag of the present invention is provided with two cuts in the tubular woven fabric at a length substantially corresponding to the weaving width of another tubular woven fabric, Inserting another tubular woven fabric, joining the vicinity of the edge of the cut of the tubular woven fabric and the surface of another tubular woven fabric abutting on the cut, and joining another tubular woven fabric located inside the tubular woven fabric In the tubular woven fabric, a hole communicating from the inside of the other tubular woven fabric to the inside of the tubular woven fabric is formed, and an injection port of a flowable material is provided in the other tubular woven fabric. .
[0009]
In this case, the civil engineering structure forming bag is configured to join two tubular woven fabrics into a substantially cross shape or to join four tubular woven fabrics according to a desired shape of the civil engineering structure. The other tubular woven fabric provided with the inlet and penetrating the two tubular woven fabrics, and the other provided with the inlet and pierced through the two tubular woven fabrics It may be composed of a tubular woven fabric and another tubular woven fabric arranged substantially in parallel, or may be formed by joining a plurality of tubular woven fabrics and penetrating the plurality of tubular woven fabrics. Another tubular woven fabric provided with the inlet, and another tube penetrated by the plurality of tubular woven fabrics, and arranged substantially parallel to the other tubular woven fabric provided with the inlet. Woven fabric.
[0010]
In the civil engineering structure of the present invention using the civil engineering structure forming bag, the fluid material is sequentially injected into a plurality of tubular woven fabrics constituting the civil engineering structure forming bag. It is characterized by having been constructed.
An anchor fixing device is provided at the intersection of the civil engineering structure forming bag, and is filled into the tubular woven fabric to integrate the tubular woven fabric and the anchor fixing device. Inside the tubular woven fabric of the object forming bag, a reinforcing material is arranged in the longitudinal direction, the reinforcing material and the end of the tubular woven fabric are fixed, and the inside of the tubular woven fabric is filled with a flowable material. Thus, the tubular woven fabric, the reinforcing material, and the anchor fixing device can be integrated.
[0011]
Further, the slope stabilization method of the present invention using the civil engineering structure forming bag body, the tubular woven fabric of the civil engineering structure forming bag body is installed on the slope so as to be vertically and horizontally, or on the slope. It is installed diagonally, and the inside of the tubular woven fabric is filled with a fluid material.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a civil engineering structure forming bag, a civil engineering structure using the civil engineering structure forming bag, and a slope stabilization method of the present invention will be described with reference to the drawings.
[0013]
[Example 1]
FIGS. 1 to 7 show a civil engineering structure forming bag of the present invention, a civil engineering structure using the civil engineering structure forming bag, and a slope stabilization method according to a first embodiment.
In this embodiment, the present invention is applied to a pressure receiving plate used in an anchor method for preventing loosening of the ground, and a civil engineering structure forming bag is formed by using one tubular woven fabric (hereinafter, referred to in the present specification, At approximately the center of the “cylindrical woven fabric 1A”, two locations with a length substantially corresponding to the weaving width of the other tubular woven fabric (hereinafter, referred to as “cylindrical woven fabric 1B” in this specification) The tubular woven fabric 1B is inserted into the cut 11 and the tubular woven fabric 1B is penetrated through the tubular woven fabric 1A, and the vicinity of the edge of the cut 11 of the tubular woven fabric 1A and the cut 11 The surface of the tubular woven fabric 1B that comes into contact with the inside of the tubular woven fabric 1B is bonded to the tubular woven fabric 1B located inside the tubular woven fabric 1A by an adhesive, heat fusion, sewing, or the like. A plurality of holes 12 communicating with the inside of the tubular woven fabric 1A are formed in the tubular woven fabric 1B. It is to be constructed by providing the inlet 13 of the fluidity solidifying material.
[0014]
In this case, the tubular woven fabrics 1A and 1B are not particularly limited. For example, the tubular woven fabrics 1A and 1B are water-permeable tubular woven fabrics having a constant diameter of about 400 mm, and have a circumferential yarn. Is continuously woven in a spiral shape.
The warp and weft of the tubular woven fabrics 1A and 1B are made of a fiber having weather resistance, for example, polyester fiber, and have a thickness of 1000d / 2, a density of 20 warp / inch, and a weft of 20 / inch. The weave is plain weave. Specifically, the yarn is woven by an annular loom, and the weft constitutes the spiral yarn of the tubular woven fabric.
The strength of the tubular woven fabrics 1A and 1B can be improved by weaving wires having high tensile strength such as high-strength fibers and wires into the warp and / or weft of the tubular woven fabrics 1A and 1B.
[0015]
Also, as shown in FIGS. 1 and 2, two cuts 11 having a length of 600 mm are provided at opposite positions in the center of the tubular woven fabric 1A, through which the tubular woven fabric 1B passes. So that they can be assembled.
[0016]
The joining of the vicinity of the edge of the cut 11 of the tubular woven fabric 1A and the surface of the tubular woven fabric 1B that comes into contact with the cut 11 is performed by an adhesive 11a. The tubular woven fabrics 1A and 1B are integrally sewn 11b only at both ends of the cuts of the tubular woven fabric 1A which is easily peeled.
As the adhesive, a general hot-melt adhesive such as nylon or urethane having a low melting point is used.
In addition, the joining method of the vicinity of the edge of the cut 11 of the tubular woven fabric 1A and the surface of the tubular woven fabric 1B abutting on the cut 11 is not limited to this, and for example, as in a modified example shown in FIG. The tubular woven fabric 1B contacting the cut 11 of the tubular woven fabric 1A is slightly doubled by being pinched and shortly folded at the contact position with the cut 11, and in this state, the tubular woven fabric 1A, 1B may be integrally sewn one or more times, thereby increasing the degree of freedom of deformation at the joints of the tubular woven fabrics 1A and 1B and preventing the joints from peeling. be able to.
[0017]
As shown in FIG. 1, a plurality of holes 12 communicating from the inside of the tubular woven fabric 1B to the inside of the tubular woven fabric 1A are provided on the side faces of the tubular woven fabric 1B facing the inside of the tubular woven fabric 1A. In the embodiment, four points are provided and the size is set to a diameter of 30 mm.
[0018]
A check valve 14 can be attached to the injection port 13 of the fluidized solidifying material provided in the tubular woven fabric 1B, if necessary.
[0019]
The civil engineering structure forming bag is provided with one or a plurality of deformed steel bars 2 as reinforcing materials in the longitudinal direction in both tubular woven fabrics 1A and 1B (the number of reinforcing materials and The disposition position depends on the load design of the pressure receiving plate, but two or more are appropriate. The disposition position is appropriately slightly below the center position of the cross section of the tubular woven fabrics 1A and 1B in a swelled state. In this embodiment, two of each are arranged.), And the reinforcing member 2 and the ends of the tubular woven fabrics 1A and 1B are fixed.
At the intersection of both tubular woven fabrics 1A and 1B, anchor fixing device 3 shown in FIG. 5 is provided so as to be fixed to tubular woven fabrics 1A and 1B.
Then, the fluid solidifying material 8 is filled into the inside of both the tubular woven fabrics 1A and 1B from the inlet 13 for the fluid solidifying material provided in the tubular woven fabric 1B, and both the tubular woven fabrics 1A and 1B are filled. , The reinforcing member 2 and the anchor fixing device 3 are integrated.
In this case, inside the tubular woven fabric 1A, the reinforcing material 2 disposed in the longitudinal direction is a hole formed in the tubular woven fabric 1B and communicating from the inside of the tubular woven fabric 1B to the inside of the tubular woven fabric 1A. 12 so as to pass therethrough.
[0020]
The reinforcing material 2 disposed inside the tubular woven fabrics 1A and 1B in the longitudinal direction is made of a different-diameter steel bar formed to be slightly longer than the tubular woven fabrics 1A and 1B, and the ends are subjected to threading. Then, the bar steel whose end is threaded is formed from two metal plates 41 and 42 (one side of the metal plate 42 is internally threaded on one side) and a ring 43 as shown in FIGS. 1 and 4. And a nut 21 (or a female screw member 41b planted on a metal plate 41X of the terminal fitting 4 as shown in FIG. 1).
In this embodiment, as the reinforcing member 2, different-diameter steel bars are used. In addition, a steel bar having an arbitrary cross-sectional shape such as a normal round steel bar or a shaped steel such as an H-shaped steel may be used. The material may be made of steel, FRP, or the like.
[0021]
The ends of the tubular woven fabrics 1 A and 1 B are sandwiched between the two metal plates 41 and 42 of the terminal fitting 4 via a ring 43, and the bolts 44 are attached to the metal plates 42. Attachment is made by screwing into the formed screw hole 42a and tightening.
With the structure of this terminal fitting 4, when the bag for civil engineering structure formation is installed on the slope and the inside of the tubular woven fabrics 1A and 1B is filled with the flowable solidifying material, tension is applied to the tubular woven fabrics 1A and 1B. You can call.
Furthermore, if the reinforcing member 2 in which a nut is fixed to one end of the screw (welding, double nut, etc.) is used, since the female screw is applied to the metal plate 42, if the nut is turned in the releasing direction, a cylindrical woven fabric is formed. 1A and 1B can be expanded more firmly.
As a result, the tubular woven fabrics 1A and 1B can be filled with the flowable solidifying material while keeping the shape without sticking.
[0022]
As shown in FIG. 5, the anchor fixing device 3 is composed of a cylindrical metal fitting having two flanges 31, 32 and a ring 33 at both ends.
Then, the anchor fixing device 3 is inserted into the mounting holes 15 formed on the upper and lower surfaces of the intersection of the tubular woven fabrics 1A and 1B, and the periphery of the mounting holes 15 of the tubular woven fabrics 1A and 1B is fixed to the anchor fixing device. 3 is clamped on the flange 32 via a ring 33, and a bolt is screwed into a screw hole 31 a formed in the flange 31, and the ring 33 is tightened to be attached.
The height of the anchor fixing device 3 is such that the distance between the flanges 32 sandwiching the tubular woven fabrics 1A, 1B at both ends is approximately equal to or slightly smaller than the diameter of the tubular woven fabrics 1A, 1B. Set as follows.
[0023]
Next, a slope stabilization method using the civil engineering structure forming bag will be described with reference to FIGS. 6 and 7.
First, the reinforcing material 2 arranged in the longitudinal direction inside the tubular woven fabric 1A penetrates a hole 12 formed in the tubular woven fabric 1B and communicating from the inside of the tubular woven fabric 1B to the inside of the tubular woven fabric 1A. Then, both ends are fixed together with the end of the tubular woven fabric 1A by the terminal fitting 4.
In a state where the reinforcing material 2 is inserted into the tubular woven fabric 1A and the check valve 14 is attached to the inlet 13 of the fluidized solidifying material of the tubular woven fabric 1B, the tubular woven fabric 1B is replaced with the tubular woven fabric 1A. And is shipped from the factory to the construction site together with other fittings and the like in a compact state (FIG. 7B).
[0024]
Then, at the construction site, the civil engineering structure forming bag is lifted using a crane or the like using the ring 41a provided on the metal plate 41 of the terminal fitting 4 at both ends of the tubular woven fabric 1B (FIG. 7 ( c)) The tubular woven fabrics 1A and 1B are inclined in the vertical and horizontal directions, that is, the tubular woven fabric 1A is in the contour direction of the inclined surface, and the tubular woven fabric 1B is in a direction orthogonal to the tubular woven fabric 1A. (In this case, the liquid solidifying material is set so that the inlet 13 is located above the slope). The tubular woven fabric is formed using the ring 41 a provided on the metal plate 41 of the terminal fitting 4. 1A is temporarily fixed to the slope by the anchor 5 (FIG. 6A).
In the present embodiment, the tubular woven fabrics 1A and 1B are installed on the slope in the vertical and horizontal directions. However, the present invention is not limited to this. For example, as shown in FIG. In the case where the first woven fabric 1F is joined in a substantially lattice shape, the respective tubular woven fabrics 1F are inclined obliquely to the slopes, that is, the tubular woven fabrics 1A and 1B are approximately 45 ° away from the contours of the slopes. It can also be arranged in an angled direction.
The reinforcing material 2 disposed inside the tubular woven fabric 1B is inserted at the construction site, and both ends are fixed together with the end of the tubular woven fabric 1B by the terminal fitting 4.
In this case, since the inside of the tubular woven fabric 1B merely has a tubular cavity, the reinforcing member 2 can be easily inserted.
Then, the tubular woven fabric 1B is temporarily fixed to the slope by the anchor 5 using the ring 41a provided on the metal plate 41 of the terminal fitting 4 of the tubular woven fabric 1B (FIG. 6B).
[0025]
It is also possible to incorporate a reinforcing material 2 disposed inside the tubular woven fabric 1B in advance at the factory, and fix both ends together with the end of the tubular woven fabric 1B with the terminal fitting 4.
Also in this case, the substantially cruciform shaped civil engineering structure forming bag is folded so that the crossing angle between the tubular woven fabric 1A and the tubular woven fabric 1B is reduced, so that the factory is shipped from the factory to the construction site in a compact state. be able to.
[0026]
Next, the anchor fixing device 3 is inserted and attached to the mounting holes 15 formed on both upper and lower surfaces of the intersection of the tubular woven fabrics 1A and 1B.
Note that the anchor fixing device 3 can be attached in advance at a factory.
A ground anchor 6 made of a high-strength steel material such as a PC steel material is cast into the ground on the anchor fixing device 3, and the lower end of the ground anchor 6 is fixed in the ground (FIG. 6C).
[0027]
In this state, a hose 72 connected to the fluidized solid material plant 7 via the fluidized solidified material pump 7 is connected to the fluidized solidified material inlet 13, and the fluidized solidified material is injected from the fluidized solidified material inlet 13. To fill the inside of both the tubular woven fabrics 1A and 1B with the flowable solidifying material (FIGS. 6 (b) and 7 (a)).
In this case, the flowable solidifying material 8 injected from the injection port 13 of the flowable solidification material is gradually filled from below the tubular woven fabric 1B, and at the time when the fluidized solidification material 8 crosses the intersection of the tubular woven fabrics 1A and 1B, The filling of the tubular woven fabric 1A also starts through the holes 12 leading from the inside of the tubular woven fabric 1B to the inside of the tubular woven fabric 1A.
Therefore, at the intersection, the tubular woven fabric 1B is filled with the fluidized solidifying material 8 while the tubular woven fabric 1A is kept in a sufficiently expanded state, and finally, the fluidized solidified material is added to the tubular woven fabric 1B. When 8 is completely filled, the injection hose is removed from the injection port 13 of the fluidized solidifying material, and the injection operation is completed. By mounting the check valve 14 at the inlet 13 of the flowable solidifying material, it is possible to prevent the flowable solidification material from flowing out.
[0028]
As the fluidized solidifying material to be filled into the tubular woven fabrics 1A and 1B, for example, ordinary mortar using general Portland cement is used, and the final injection pressure is slightly increased to make the tubular woven fabric 1A, Dewatering is performed through the texture of 1B, and the fluidized solidified material 8 inside is densified and cured early so that the volume after curing due to breathing or the like does not decrease. The injection pressure is suitably about 0.3 MPa.
If special mortar with no volume decrease after curing is used, there is no need for dehydration and the injection pressure may be slightly lower, but since it is installed on a slope, the contour of the slope must be applied to some extent without applying some pressure. The cross section of the tubular woven fabric 1A in the direction (horizontal direction) may remain in a distorted shape due to the weight of the fluidized solidifying material. In order to obtain a substantially circular shape, an injection pressure of about 0.1 MPa is required.
Further, here, the mortar has been described as an example of the fluidized solidifying material 8, but other examples of the fluidized solidifying material 8 include cement-based solidified materials such as cement paste and concrete, and resin-based hardened materials. A solidifying material having weather resistance can be used.
[0029]
When the surface of the tubular woven fabrics 1A and 1B has been subjected to a surface treatment such as vinyl chloride resin or asphalt for imparting weather resistance, it cannot be dewatered from the weave, so there is no volume loss after curing. Use a flowable solidifier.
The surface treatment of the tubular woven fabrics 1A and 1B for imparting weather resistance can be performed after the fluidized solidifying material 8 filled in the tubular woven fabrics 1A and 1B is cured.
[0030]
In addition, the surfaces of the tubular woven fabrics 1A and 1B can be subjected to a flame retardant treatment or the like.
[0031]
Finally, the temporary anchor 5 is removed, and when the fluidized solidifying material 8 is completely hardened, both ends of the ground anchor 6 are fixed to the ground and the anchor fixing device 3, respectively, to complete the construction (FIG. 6 (d)). )).
Note that the terminal fittings 4 of the tubular woven fabrics 1A and 1B may be left as they are, but may be removed after the fluidized solidifying material 8 is hardened and reused. In this case, the reinforcing material 2 protruding from the end is cut and removed as necessary.
[0032]
[Example 2]
Using the same tubular woven fabrics 1A and 1B as in Example 1, both ends are cut obliquely.
The obliquely cut end is fixed integrally with the reinforcing member 2 with the terminal fitting 4 as in the first embodiment.
In both the tubular woven fabrics 1A and 1B, the long surface cut obliquely is on the lower surface side (ground side).
When the distance between the upper surfaces of the tubular woven fabrics 1A and 1B and the terminal fittings 4 of the reinforcing member 2 is set to be substantially the same, the length of the lower surfaces of the tubular woven fabrics 1A and 1B becomes longer than the upper surface. Therefore, it is in a sagging state.
The slope on which the pressure plate is installed is not always smooth, and the surface is not always smooth. Therefore, a gap is formed between the pressure plate and the slope. As a force structure, an even load is not applied to the slope, and the pressure receiving plate itself also receives an uneven load, so that the strength is weakened.
If there is a sagging portion on the lower surfaces of the tubular woven fabrics 1A and 1B, both ends of the tubular woven fabrics 1A and 1B are temporarily fixed to the slope by the anchors 5, and the ground anchor 6 is driven into the anchor fixing device 3. Since the flowable solidifying material is injected, the lower surfaces of the tubular woven fabrics 1A and 1B can swell along the irregularities of the slopes, and the unevenness can be automatically adjusted.
Other configurations are the same as those of the first embodiment.
[0033]
[Example 3]
As shown in FIG. 8, the tubular woven fabrics 1A and 1B are the same as those in the first embodiment except that the woven fabrics have diameters changed in the longitudinal direction.
Although the diameter of the tubular woven fabrics 1A and 1B is not particularly limited, for example, the diameter changes in a tapered shape on both sides from a straight portion (length 600 mm) with a diameter of 600 mm at the center (length 1800 mm). ), Both ends are set to have a diameter of 400 mm, and then a straight portion (length 200 mm) is formed again.
Assembling and joining the tubular woven fabrics 1A and 1B, holes 12 communicating from the inside of the tubular woven fabric 1B to the inside of the tubular woven fabric 1A, an inlet 13 for a fluidized solidifying material, a reinforcing material 2, an anchor fixing device 3, and terminal fittings 4. The construction of the pressure receiving plate is the same as that of the first embodiment. The height of the anchor fixing device 3 is the same as that of the first embodiment, and the distance between the flanges 32 sandwiching the tubular woven fabrics 1A and 1B at both ends is the same as that of the first embodiment. The dimensions are set to be substantially equal to or slightly smaller than the diameter of the woven fabrics 1A and 1B.
The shape of the pressure receiving plate after the injection of the fluidized solidifying material is large in width and height at the center, and becomes smaller in a tapered shape toward the end of the cross. The tapered shape is set according to the distribution of the bending moment by the design method of the pressure receiving plate.
When a civil engineering structure forming bag is formed of tapered tubular woven fabrics 1A and 1B and constructed as a pressure receiving plate, terminal fittings 4 at both ends of tubular woven fabrics 1A and 1B are placed on a slope. And the reinforcing member 2 is lowered by its own weight below the center of the cross section of the tubular woven fabrics 1A and 1B.
Accordingly, the lower surfaces of the tubular woven fabrics 1A and 1B are in a state in which the tubular woven fabrics 1A and 1B are slackened in the longitudinal direction. This slack can be used for unevenness adjustment as in the second embodiment.
Other configurations are the same as those of the first embodiment.
[0034]
[Example 4]
Using the same tubular woven fabrics 1A and 1B as in the first embodiment, assembling is performed in the same manner, but as shown in FIG. 9, joining of the tubular woven fabric 1A and the tubular woven fabric 1B is performed in the following procedure. .
A short tubular woven fabric 1C having a length of 200 mm is prepared, and folded back so that the front and back are reversed up to the center in the longitudinal direction to form a backing cloth 1C '.
The patch cloth 1C 'is inserted into the cut of the tubular woven cloth 1A, and one edge (outer peripheral side) of the patch cloth 1C' is integrally sewn with the vicinity of the edge of the cut 11 of the tubular woven cloth 1A, and the other is sewn. The edge (inner peripheral side) is sewn integrally with the surface of the tubular woven fabric 1B that comes into contact with the cut 11.
In this way, by joining the tubular woven fabrics 1A and 1B via the backing 1C 'folded back at the center in the longitudinal direction, the tubular woven fabrics 1A and 1B are expanded by injecting the fluidized solidifying material. At this time, the patch cloth 1C 'provides a buffering action, and the joint is more difficult to be broken.
Other configurations are the same as those of the first embodiment.
[0035]
[Example 5]
Using the same tubular woven fabrics 1A and 1B as in Example 1, assembling and joining are performed in the same manner, but as shown in FIG. 10, the tubular woven fabrics are overlapped on the lower surfaces of the tubular woven fabrics 1A and 1B. A substantially cross-shaped bag made of cloths 1C and 1D is provided.
Instead of disposing the tubular woven fabrics 1C and 1D, the lower surfaces of the tubular woven fabrics 1A and 1B may have a two-layer structure including a space for injecting a fluidized solidifying material.
No reinforcing material is inserted into the tubular woven fabrics 1C and 1D, and the woven fabrics are simply closed by suturing without using terminal fittings. The other configuration is the same as that of the tubular woven fabrics 1A and 1B.
The central portions of the crosses of the tubular woven fabrics 1C and 1D are integrally fixed by the anchor fixing device 3 together with the attachment of the lower surfaces of the tubular woven fabrics 1A and 1B.
Then, after injecting the fluidized solidifying material into the tubular woven fabrics 1A and 1B, the tubular woven fabric 1C is formed through an inlet (not shown) of the fluidized solidified material formed at an appropriate position in the tubular woven fabrics 1C and 1D. Inject the flowable solidifying material into 1D. Injection of the fluidized solidifying material into the tubular woven fabrics 1C and 1D is performed in a state where almost no pressure is applied to the bag body, and the woven fabric surfaces of the tubular woven fabrics 1C and 1D correspond to the tubular woven fabrics 1A and 1B. Spread along the shape and unevenness of the ground.
In this way, even if there is a large unevenness in the ground, the gap between the pressure receiving plate and the ground can be filled by the unevenness adjusting function of the tubular woven fabrics 1C and 1D. Further, since the cross-section of the tubular woven fabrics 1A and 1B swells in a substantially circular shape, the portions in contact with the ground are reduced if the lower surface is not slack as in the second and third embodiments. The gaps between the lower surfaces of the tubular woven fabrics 1C and 1D and the ground itself can be filled with the cloths 1C and 1D. In this manner, a structure in which the load is smoothly transmitted between the pressure receiving plate and the ground is obtained.
Other configurations are the same as those of the first embodiment.
In this embodiment, installation and construction can be performed even on a slope without cutting.
[0036]
Next, the operation of the civil engineering structure forming bag of the above embodiment, the civil engineering structure using the civil engineering structure forming bag and the slope stabilization method will be described.
According to the bag for forming a civil engineering structure, the tubular woven fabric 1A penetrates the tubular woven fabric 1B, the woven fabric surfaces are joined to each other, and the tubular woven fabric 1B communicates with the inside of the tubular woven fabric 1A. Since the holes 12 are provided and the injection port 13 of the flowable solidifying material is provided in the tubular woven fabric 1B, the flowable solidification material 8 injected from the injection port 13 of the flowable solidification material is formed at the intersection. After the tubular woven fabric 1B is sufficiently expanded, it is poured into the tubular woven fabric 1A. If the flowable solidifying material is first injected into the tubular woven fabric 1A, the tubular woven fabric 1B cannot be fully expanded at the intersection, but with this intersection structure, the tubular woven fabric 1B inside the intersection is A state in which no swelling is generated does not occur, and smooth injection of the fluidized solidifying material and stable swelling of the tubular woven fabrics 1A and 1B are realized.
As a result, the surface of the fluidized solidified material 8 after hardening is reinforced by continuous fibers of the tubular woven fabrics 1A and 1B, and double reinforced at intersections. As a result, not only can a good function be obtained as a cloth mold frame at the time of injecting the flowable solidifying material, but also it can effectively function to strengthen the surface of a structure in which surface cracks and cracks are generally likely to occur.
[0037]
In addition, even if the site location conditions are poor due to problems such as transportation of members, because it is much lighter than the pressure receiving plate made of precast concrete, it can be brought into the construction place of the pressure receiving plate in a compact state in a bag state and it is much lighter than the pressure receiving plate made of precast concrete. Construction becomes easy.
[0038]
The reinforcing material 2 is disposed inside the tubular woven fabrics 1A and 1B and fixed integrally at the ends, and the anchor fixing device 3 is provided at a portion where the tubular woven fabrics 1A and 1B penetrate, and the inside is made of a fluid solidifying material. The pressure receiving plate filled with 8 and integrally formed is a structure integrally formed as a whole, and effectively functions as a reaction force structure for fixing the ground anchor 6 to the slope.
When the surfaces of the tubular woven fabric 1A and the tubular woven fabric 1B are joined with an adhesive or the like, and the tubular woven fabrics 1A and 1B are integrally sewn only at both ends of the cut 11 of the tubular woven fabric 1A. Even when the injection pressure is slightly increased during the injection of the fluidized solidifying material and the cut 11 becomes large due to the bulging of the tubular woven fabric 1A, the tubular woven fabric 1B is pulled by the stitching portion and there is no gap between them. No leakage of the fluidized solidifying material occurs.
[0039]
By joining the tubular woven fabrics 1A and 1B via the backing cloth 1C 'which is turned upside down at the center in the longitudinal direction, the tubular woven fabrics 1A and 1B are injected by injecting a fluidized solidifying material. Swells, the backing cloth 1C 'provides a buffering action, and the movement of the tubular woven fabrics 1A, 1B due to the swelling does not directly affect each other at the joint, so that the joint is less likely to be torn and the fluidized solidified Material leakage is less likely to occur.
[0040]
Since the reinforcing member 2 is screwed at the end and fixed to the terminal fitting 4, and the tubular woven fabrics 1 A and 1 B are also attached so as to be clamped by the terminal fitting 4, the bag bulges. In this state, an appropriate number of reinforcements designed in advance are arranged at appropriate positions. In addition, the terminal fitting 4 can be removed after the flowable solidifying material 8 has been hardened, and can be reused.
In addition, by using a deformed steel bar as the reinforcing material 2, the adhesion to the fluidized solidifying material 8 and the integrity can be improved.
[0041]
The intersection of the tubular woven fabrics 1A and 1B bulges more than the other part of the tubular woven fabric due to the injection of the fluidized solidifying material, and when the fluidized solidified material is solidified as it is, the tubular woven fabric is formed around the intersection. The constriction is formed, and the structure has a shape in which stress is easily concentrated. If the height of the anchor fixing device 3 is substantially equal to or slightly smaller than the diameter of the tubular woven fabrics 1A and 1B, the anchor fixing device 3 suppresses the bulging and reduces the shape of the surface of the cross. It becomes smooth and no stress concentration problem occurs.
[0042]
In the case where the tubular woven fabrics 1A and 1B are woven fabrics having diameters changed in the longitudinal direction, and the diameter of the central portion is large and tapered toward both ends, the bending applied to the substantially cross-shaped pressure receiving plate The rigidity of the pressure receiving plate can be designed according to the moment distribution, which is economical.
[0043]
When the lower surface of the tubular woven fabrics 1A and 1B is provided with a slack, the unevenness is automatically adjusted by injecting the fluidized solidifying material. It is formed in the state where it was.
[0044]
In addition, if a substantially cruciform bag made of the tubular woven fabrics 1C and 1D is provided so as to overlap the lower surfaces of the tubular woven fabrics 1A and 1B, and the bag is used for unevenness adjustment, the unevenness of the ground is large. However, even if the lower surfaces of the tubular woven fabrics 1C and 1D are closely adhered to the unevenness of the ground and the fluid solidifying material is injected into the tubular woven fabrics 1A and 1B with a high injection pressure, the lower surface of the tubular woven fabrics 1C and 1D can be obtained. The upper surface is in close contact with the tubular woven fabrics 1A and 1B, so that load transfer between the pressure receiving plate and the ground is smooth.
[0045]
Up to now, the civil engineering structure forming bag of the present invention and the pressure receiving plate and slope stabilization method using the civil engineering structure forming bag have been applied to the pressure receiving plate used in the anchoring method for preventing the ground from loosening. Although the description has been given based on a plurality of embodiments, the application object of the present invention is not limited to the pressure receiving plate, but can be widely applied to various civil engineering structures.
[0046]
Specifically, when the civil engineering structure forming bag is used as a pressure receiving plate, as described above, the two tubular woven fabrics 1A and 1B are joined in a substantially cross shape. As shown in FIG. 11, foundation members of the ground stabilization method for preventing subsidence of the upper structure S and preventing liquefaction of the ground during an earthquake (besides those installed on the ground and those installed under the sea ), Four tubular woven fabrics 1E may be joined in a substantially cross-girder shape, or as shown in FIG. Civil engineering structures, seaweed (seagrass) ground construction methods (seaweed bed creation sheet holding jacket) and other civil engineering structures (including those installed on the ground as well as those installed in the sea) applicable to a wide range of areas When used, a plurality of tubular woven fabrics 1F are substantially lattice-shaped. Etc. to a joining structure in accordance with the civil structures to be formed, it can be used in any combination of shapes.
Then, as shown in FIG. 11, in the case of a structure in which the four tubular woven fabrics 1E are joined in a substantially cross-girder shape, the tubular woven fabric 1E1 provided with the inlet 13 for the fluid material is formed of two tubular woven fabrics 1E. Assembled so as to penetrate the woven fabric 1E2, and further assembled into a shape in which two tubular woven fabrics 1E2 penetrate another tubular woven fabric 1E3 arranged in the same direction as 1E1. The tubular woven fabrics 1E1 and 1E2 are provided with holes 12 communicating with the tubular woven fabrics 1E2 and 1E3, respectively. According to this structure, the flowable material injected from the injection port 13 of the flowable material is filled into the cylindrical woven fabric 1E2 through the holes 12, and then filled into the cylindrical woven fabric 1E2. Since the inside of the tubular woven fabric 1E3 is filled, no fluid material is filled between the tubular woven fabrics 1E1 and 1E2 and between the tubular woven fabrics 1E2 and 1E3 at the intersections, and all the intersections are formed. The part can be expanded sufficiently.
Also, as shown in FIG. 12, in the case of a structure in which a plurality of tubular woven fabrics 1F are joined in a substantially lattice shape, the fluidity injected from the fluid material injection port 13 provided in the tubular woven fabric 1F1 is used. The material is filled into the plurality of tubular woven fabrics 1F2 through holes communicating from the inside of the tubular woven fabric 1F1 to the inside of the tubular woven fabric 1E2. A plurality of tubular woven fabrics 1F3 are filled through holes communicating therewith.
Furthermore, when the civil engineering structure forming bag is used as a seaweed bed creation sheet holding jacket, the civil engineering structure forming bag is formed of a tubular woven fabric woven of biodegradable fibers, By using slurry-like sand or sludge as the fluid material to be filled in the woven fabric, the tubular woven fabric can be prevented from spontaneously decomposing and remaining at the site after the seaweed bed is completed.
[0047]
As described above, the civil engineering structure-forming bag of the present invention, and the pressure receiving plate and the slope stabilization method using the civil engineering structure-forming bag have been described based on the plurality of embodiments. The configurations of the forming bag and the pressure receiving plate and the slope stabilization method using the civil engineering structure forming bag are not limited to those described in the above-described embodiments, but are described in the above-described respective embodiments. The configuration can be appropriately changed within a range not departing from the gist, for example, by appropriately combining.
[0048]
【The invention's effect】
INDUSTRIAL APPLICABILITY The civil engineering structure forming bag of the present invention can be folded into a compact form and brought to a construction site, and is much lighter than conventional civil engineering structure forming members such as a pressure-receiving plate made of precast concrete, and can be handled more easily. Therefore, it is not affected by the location conditions of the construction site.For example, it can be constructed even when heavy construction equipment cannot be used due to poor construction site conditions in mountainous areas, etc. Can be widely and suitably used in civil engineering methods such as
In addition, the fluid material can be smoothly filled into another tubular woven fabric bonded to the other tubular woven fabric through the holes formed in the other tubular woven fabric, and the stable shape can be obtained. As the tubular woven fabric swells, a civil structure without stress concentration is obtained, and after the fluid material filled in the tubular woven fabric is hardened, the tubular woven fabric also has the function of reinforcing the surface of the structure. be able to.
[0049]
In this case, the civil engineering structure forming bag is configured to join two tubular woven fabrics into a substantially cross shape or to join four tubular woven fabrics according to a desired shape of the civil engineering structure. The other tubular woven fabric provided with the inlet and penetrating the two tubular woven fabrics, and the other provided with the inlet and pierced through the two tubular woven fabrics It may be composed of a tubular woven fabric and another tubular woven fabric arranged substantially in parallel, or may be formed by joining a plurality of tubular woven fabrics and penetrating the plurality of tubular woven fabrics. Another tubular woven fabric provided with the inlet, and another tube penetrated by the plurality of tubular woven fabrics, and arranged substantially parallel to the other tubular woven fabric provided with the inlet. And thereby, the civil engineering structure forming bag of the present invention can be widely applied to the formation of various civil engineering structures including pressure receiving plates. .
[0050]
Further, in the civil engineering structure using the civil engineering structure forming bag, after the fluid material filled in the cylindrical woven fabric is cured, the cylindrical woven fabric, the anchor fixing device, and the reinforcing material are integrated. It is also possible that the solidified fluidized solidified material becomes a continuous structure through a hole communicating from the inside of the other tubular woven fabric to the inside of another tubular woven fabric joined to the other tubular woven fabric. Together with this, the structure has an appropriate shape and strength in terms of design, effectively functions as a reaction force structure for fixing the ground anchor to the slope, and cracks on the structure surface over many years of use. This can prevent the occurrence of chipping due to, for example,
[0051]
In addition, the slope stabilization method using the civil engineering structure forming bag body is such that the tubular woven fabric is installed on the slope so as to be vertically and horizontally, or by being installed diagonally, so that the inside of the tubular woven fabric is formed. Can be extremely smoothly filled with the fluid material, and the function of stabilizing the slope can be stably obtained.
[Brief description of the drawings]
FIG. 1 is an exploded view showing a first embodiment in which the present invention is applied to a pressure receiving plate.
FIG. 2 is an explanatory diagram of the intersection.
3A and 3B are explanatory views of a modification of the intersection, in which FIG. 3A is an explanatory view of an assembly process of the intersection, and FIG. 3B is a cross-sectional view of the intersection.
FIGS. 4A and 4B are partial explanatory views of the pressure receiving plate, wherein FIG. 4A is an internal explanatory view of an intersection, FIG. 4B is an end explanatory view, and FIG.
5A and 5B are explanatory views of the anchor fixing device, wherein FIG. 5A is an external perspective view, and FIG. 5B is a partial cross-sectional view.
FIG. 6 is an explanatory view of a construction process of the slope stabilization method of the present invention.
FIG. 7 is an explanatory view of a construction step of the slope stabilization method of the present invention.
8A and 8B are explanatory diagrams of a third embodiment in which the present invention is applied to a pressure receiving plate, wherein FIG. 8A is an external perspective view of a civil engineering structure forming bag, FIG. 8B is a front sectional view, and FIG. FIG. 3D is a plan view.
FIG. 9 is an explanatory view of a process of assembling an intersection according to a fourth embodiment in which the present invention is applied to a pressure receiving plate.
FIG. 10 is a front sectional view of a fifth embodiment in which the present invention is applied to a pressure receiving plate.
FIG. 11 is an explanatory view showing an embodiment in which four tubular woven fabrics are joined in a substantially cross-girder shape.
FIG. 12 is an explanatory view showing an embodiment in which a plurality of tubular woven fabrics are joined in a substantially lattice shape.
FIG. 13 is an explanatory view showing an example of a conventional anchor method.
[Explanation of symbols]
1A tubular woven fabric
1B tubular woven fabric
1C tubular woven fabric
1D tubular woven fabric
1E tubular woven fabric
1F tubular woven fabric
11 cut
12 holes
13 Inlet
14 Check valve
15 Anchor fixing device mounting holes
2 Reinforcing material (deformed bar)
3 anchor anchor
4 Terminal fittings
5 Terminal fittings
6 ground anchor
7 Fluidized solidification plant
71 Fluidizing solidification material pump
72 hose
8 Fluidity solidifying material (mortar)

Claims

Two cuts are made in the tubular woven fabric at a length substantially corresponding to the weaving width of the other tubular woven fabric, and another tubular woven fabric is inserted into the cut, and the cut of the tubular woven fabric is cut. The surface of the other tubular woven fabric that is in contact with the vicinity of the edge and the cut is joined, and the other tubular woven fabric located inside the tubular woven fabric is joined to the other tubular woven fabric from the inside of the other tubular woven fabric. A hole for forming a civil engineering structure, characterized in that a hole communicating with the inside of the tubular structure is formed and an inlet for a flowable material is provided in another tubular woven fabric.

The civil engineering structure forming bag according to claim 1, wherein the two tubular woven fabrics are joined in a substantially cross shape.

Four tubular woven fabrics are joined, penetrating through two tubular woven fabrics, another tubular woven fabric provided with the inlet, and pierced through the two tubular woven fabrics, 2. The civil engineering structure forming bag according to claim 1, comprising another tubular woven fabric provided with the injection port and another tubular woven fabric arranged substantially in parallel.

It is formed by joining a plurality of tubular woven fabrics, penetrates the plurality of tubular woven fabrics, and another tubular woven fabric provided with the injection port, and is pierced by the plurality of tubular woven fabrics, 2. The civil engineering structure forming bag according to claim 1, comprising another tubular woven fabric provided with the injection port and another tubular woven fabric arranged substantially in parallel.

A civil engineering structure comprising a plurality of tubular woven fabrics constituting the civil engineering structure forming bag according to claim 1, wherein a fluid material is injected into the plurality of tubular woven fabrics in order. object.

An anchor fixing device is provided at an intersection of the civil engineering structure forming bag body, and the inside of the tubular woven fabric is filled to integrate the tubular woven fabric and the anchor fixing device. 5. The civil engineering structure according to 5.

Inside the tubular woven fabric forming the civil engineering structure forming bag, a reinforcing material is disposed in the longitudinal direction, the reinforcing material and the end of the tubular woven fabric are fixed, and the inside of the tubular woven fabric flows. The civil engineering structure according to claim 5 or 6, wherein a tubular material, a reinforcing material, and an anchor fixing device are integrated by filling a conductive material.

A tubular woven fabric constituting the civil engineering structure-forming bag according to claim 1, 2, 3, or 4, is installed in a vertical and horizontal direction on a slope, and the inside of the tubular woven fabric is filled with a fluid material. Features slope stabilization method.

The cylindrical woven fabric of the civil engineering structure forming bag according to claim 1, 2, 3, or 4, is installed obliquely on a slope, and the inside of the cylindrical woven fabric is filled with a fluid material. Slope stabilization method.