JP4108456B2

JP4108456B2 - Civil engineering structure with planting part and its construction method

Info

Publication number: JP4108456B2
Application number: JP2002341336A
Authority: JP
Inventors: 崇之水原; 久大隈; 謙吾堀; 俊介寺山
Original assignee: Nippon Steel and Sumikin Metal Products Co Ltd
Current assignee: Nippon Steel Metal Products Co Ltd
Priority date: 2002-11-25
Filing date: 2002-11-25
Publication date: 2008-06-25
Anticipated expiration: 2022-11-25
Also published as: JP2004176314A

Description

【０００１】
【発明の属する技術分野】
この発明は、短尺の鋼矢板から成る外壁、又は間伐材から成る外壁の内側にコンクリート等の硬化材を充填して構築された植栽部を備えた土木構造物及びその構築工法の技術分野に属し、更に云えば、階段状の法面勾配が形成され、その平面スペースに植栽部を備えることにより、土留め擁壁、或いは治山堰堤、砂防堰堤の下流側の外壁に好適に使用される、土木構造物及びその構築工法に関する。
【０００２】
【従来の技術】
短尺の鋼矢板をコンクリート型枠兼用の外壁材として用い、前記外壁材と地山の法面との間にコンクリートを打設した土留め擁壁及びその構築工法として、本出願人が提案した技術が今般出願公開された（特許文献１参照）。
この土留め擁壁及びその構築工法は、明細書の段落番号［0002］〜［0007］に記載しているように、従来技術の問題点を全て解消した技術であり、施工的及び経済的並びに構造力学的に大変優れており、万全であると云える。
また、本出願人は、前記技術に派生して、特願２００２−１９９９２１、特願２００２−２０９４２０に提案しているように、短尺の鋼矢板等の外壁材を長手方向の両側面位置に沿って並立させ、これら相対峙する一対の外壁材の内側にコンクリート等の硬化材を充填して構築された所謂ダブルウォール型の土木構造物及びその構築工法を開発している。この技術は、主に砂防堰堤や治山堰堤に好適に実施されるが、やはり、従来技術の問題点を全て解消した技術であり、施工的及び経済的並びに構造力学的に大変優れており、万全であると云える。
【特許文献１】
特開２００２−２４２２１０号公報
【０００３】
【本発明が解決しようとする課題】
しかしながら、本出願人が開発した土留め擁壁、砂防堰堤等の上記土木構造物は、施工的及び経済的並びに構造力学的には大変優れているものの、その外観全面が鋼矢板等の外壁材で覆われているため、自然の景観を損ねてしまい、環境の保護と調和を重視するニーズに対応できていない点で改良の余地が残されていると云える。
したがって、本発明の目的は、施工的及び経済的並びに構造力学的に大変優れていると共に、自然の景観を損なわず、環境の保護と調和を重視するニーズに十分に対応できる、地球に優しい、植栽部を備えた土木構造物及びその構築工法を提供することにある。
【０００４】
【課題を解決するための手段】
上記従来技術の課題を解決するための手段として、請求項１に記載した発明に係る植栽部を備えた土木構造物は、
外壁の内側にコンクリート等の硬化材を充填して構築された土木構造物であって、
土木構造物の外壁は、一定の高さ位置毎に厚さ方向に後退して、そこに一定幅の植栽部が設けられていること、
前記外壁は、コンクリート基礎の上に複数の短尺の鋼矢板で組み立てられており、その内側に、一定高さ位置毎にほぼ水平姿勢のアンカー材が複数本ずつ設けられ、当該外壁の天端から植栽部に必要な深さを除く高さまで硬化材が充填されて前記アンカー材を埋め込んでおり、前記硬化材の上面に、植栽部の幅寸だけ厚さ方向に後退した部位にコンクリート基礎が設けられ、その上に次上段の外壁が前記鋼矢板で組み立てられ、前記下段の外壁と前記次上段の外壁との間に凹溝状の植栽部が形成され、前記植栽部に植栽用の土砂が充填されていること、
以下、同様にして外壁部分の上下方向に複数段の植栽部が設けられ、植栽が行われていることを特徴とする。
【０００５】
請求項２に記載した発明に係る植栽部を備えた土木構造物は、
外壁の内側にコンクリート等の硬化材を充填して構築された土木構造物であって、
土木構造物の外壁は、一定の高さ位置毎に厚さ方向に後退して、そこに一定幅の植栽部が設けられていること、
前記外壁は、コンクリート基礎の上に複数の間伐材を水平方向に積み重ねて組み立てられており、その内側に、一定高さ位置毎にほぼ水平姿勢のアンカー材が複数本ずつ設けられ、当該外壁の天端から植栽部に必要な深さを除く高さまで硬化材が充填されて前記アンカー材を埋め込んでおり、前記硬化材の上面に、植栽部の幅寸だけ厚さ方向に後退した部位にコンクリート基礎が設けられ、その上に次上段の外壁が前記間伐材を水平方向に積み重ねて組み立てられ、前記下段の外壁と前記次上段の外壁との間に凹溝状の植栽部が形成され、前記植栽部に植栽用の土砂が充填されていること、
以下、同様にして外壁部分の上下方向に複数段の植栽部が設けられ、植栽が行われていることを特徴とする。
【０００６】
請求項３に記載した発明は、請求項１又は２に記載した植栽部を備えた土木構造物において、
外壁の内側に充填する硬化材は、少なくとも一段のアンカー材をほぼ水平な姿勢で埋め込むに足る高さを１ユニットとして、１回又は複数回に分けた分量ずつ充填し、且つ養生を行う工程により充填されていることを特徴とする。
【０００７】
請求項４に記載した発明は、請求項１〜３のいずれか一に記載した植栽部を備えた土木構造物において、
アンカー材は、その一端は腹起こし材に取り付けられ、他端は下向きに折り曲げられていることを特徴とする。
【０００８】
請求項５に記載した発明は、請求項１〜４のいずれか一に記載した植栽部を備えた土木構造物において、
外壁の上縁部の高さは水平方向に一直線状に揃えられ、同上縁部の上に堤冠材が取り付けられていることを特徴とする。
【０００９】
請求項６に記載した発明は、請求項１〜５のいずれか一に記載した植栽部を備えた土木構造物において、
硬化材は、現地発生土と砕石、水及びセメントから成るソイルセメントであることを特徴とする。
【００１０】
請求項７に記載した発明に係る植栽部を備えた土木構造物の構築工法は、
外壁の内側にコンクリート等の硬化材を段階的に充填して構築する土木構造物の構築工法であって、
前記外壁は、コンクリート基礎の上に複数の短尺の鋼矢板で組み立て、その内側に、一定高さ位置毎にほぼ水平姿勢のアンカー材を複数本ずつ段階的に取り付け、当該外壁の天端から植栽部に必要な深さを除く高さまで硬化材を段階的に充填して前記アンカー材を埋め込み、前記硬化材の上面に、植栽部の幅寸だけ厚さ方向に後退した部位にコンクリート基礎を設け、その上に次上段の外壁を前記鋼矢板で組み立てて前記下段の外壁と前記次上段の外壁との間に凹溝状の植栽部を形成し、前記植栽部に植栽用の土砂を充填すること、
前記外壁の下部は、コンクリート基礎の上面に、鋼矢板の下端を挿入できる上向きに開口した溝形断面材である基礎梁を配置し、同コンクリート基礎の上面に固定したアンカー金具によって前記基礎梁を位置決めしており、前記アンカー金具及びこれと結合した斜めのサポート材により比較的短い支柱を所望の法面勾配で立てて、前記支柱の間に水平方向の腹起こし材を支持させ、前記基礎梁の溝内に下端を挿入した鋼矢板を前記腹起こし材と結合して支持せしめること、
以下、同様の工程を繰り返し行い、外壁を一定の高さ位置毎に厚さ方向に後退して外壁部分の上下方向に一定幅の植栽部を複数段設け、植栽を行うことを特徴とする。
【００１１】
請求項８に記載した発明は、請求項７に記載した植栽部を備えた土木構造物の構築工法において、
外壁を構成する短尺の鋼矢板は、コンクリート基礎上の一段目に、モジュール長さ及び略１／２モジュール長さに加工した鋼矢板を互い違いの配置に接合し、その上縁部の継目を上下左右方向に背が低いものと背が高いものとが互い違いの配置となる段違いの千鳥状配置に形成し、充填する硬化材の天端よりも少なくとも一工程分だけ先行して組み立てを進めることを特徴とする。
【００１２】
請求項９に記載した発明に係る植栽部を備えた土木構造物の構築工法は、
外壁の内側にコンクリート等の硬化材を段階的に充填して構築する土木構造物の構築工法であって、
前記外壁は、コンクリート基礎の上に複数の間伐材を水平方向に積み重ねて組み立て、その内側に、一定高さ位置毎にほぼ水平姿勢のアンカー材を複数本ずつ段階的に取り付け、当該外壁の天端から植栽部に必要な深さを除く高さまで硬化材を段階的に充填して前記アンカー材を埋め込み、前記硬化材の上面に、植栽部の幅寸だけ厚さ方向に後退した部位にコンクリート基礎を設け、その上に次上段の外壁を前記間伐材を水平方向に積み重ねて組み立てて前記下段の外壁と前記次上段の外壁との間に凹溝状の植栽部を形成し、前記植栽部に植栽用の土砂を充填すること、
前記外壁の下部は、コンクリート基礎の上面にアンカー金具を固定し、該アンカー金具と結合した斜めのサポート材により前記間伐材を支持するＨ形鋼等の支柱を所望の法面勾配で立てて、前記支柱の間に水平方向の腹起こし材を支持せしめること、
以下、同様の工程を繰り返し行い、外壁を一定の高さ位置毎に厚さ方向に後退して外壁部分の上下方向に一定幅の植栽部を複数段設け、植栽を行うことを特徴とする。
【００１３】
【本発明の実施形態、及び実施例】
先ずは、請求項７に記載した発明に係る植栽部を備えた土木構造物の構築工法の実施形態を図面に基づいて説明し、併せて請求項１に記載した発明に係る植栽部を備えた土木構造物の構成を逐次説明する。
本発明の構築工法は、図１に示したように、地山１の法面１ａが崩落するのを防ぐために構築される土留め擁壁（土木構造物）Ｗの長手方向（紙面と垂直方向）に沿って設置された外壁１１、２１、３１を構築し、その内側に、コンクリート等の硬化材３を段階的に充填して同土木構造物Ｗを構築する工法であり、前記外壁１１、２１、３１を複数の短尺の鋼矢板２で組み立てることを特徴とする。
しかも、前記外壁１１、２１、３１は、一定の高さ位置毎に厚さ方向に順次後退して、そこに一定幅（本実施形態では５０ｃｍ程度）の凹溝状の植栽部１３を設け、その内側面には一定高さ位置毎にほぼ水平姿勢のアンカー材４…を複数本ずつ取り付け、これを硬化材３の中に埋め込み、強度を発現した硬化材３のアンカー作用で、外壁１１、２１、３１の自立支持及び形態保持を行うことも特徴としている。
【００１４】
以下、更に具体的な説明を進める。
先ず、鋼矢板２で組み立てる第一段目の外壁１１の構築について説明する。図２は複数の短尺の鋼矢板２で組み立てた前記第一段目の外壁１１の完成状態の一例を部分的に示し、図３〜図５は同外壁１１の組み立て要領を示している。
図３と図４は、地盤上に打設したコンクリート基礎５の上で第一段目の外壁１１の組み立てを行った状況を示している。コンクリート基礎５の構築に際して予め埋め込みアンカーを用意するか、又は完成したコンクリート基礎５にアンカー用孔を削孔して彫り込みアンカーを用意するなどし、そのアンカーボルト６を利用して、アングル等によるアンカー金具７の内側端部を固定する。同アンカー金具７の外側端部に、鋼矢板２の下端を挿入できその位置を定める上向きに開口した溝形断面材である基礎梁８がほぼ直角な向き（土木構造物Ｗの長手方向）に連結されており、前記アンカー金具７…により、基礎梁８の位置決め固定が行われる。
【００１５】
前記アンカー金具７は、支柱９の設置位置と対応する間隔（約２ｍ）で基礎梁８の長手方向に複数設置されている。下端を前記アンカー金具７とボルト止め等の手段で結合した斜めのサポート材１０の上端部と、やはり下端部を基礎梁８の溝内へ挿入して外壁断面のセンター位置へボルト止め等により位置決めした支柱９の上部とを交わらせ、ボルトで固定する手法により、支柱９は当該土木構造物Ｗについて設計された所望の法面勾配に立てられ強固に支持される。支柱９にはアングル材等が使用され、後記する標準モジュール寸法（一例として長さ約１ｍ）の鋼矢板２Ａよりも少し長い程度で、言うなれば外壁１１の下部の一段目のみを支持する程度に比較的短い支柱９として立てられている。
上記のようにして立てた各支柱９、９…の間に、第一段目及び第二段目の腹起こし材１２ａと１２ｂがそれぞれ水平方向に配置されボルト止め等の手段で結合して架設支持されている。腹起こし材１２には通例アングル材が使用され、その上辺が水平面となる態様で支柱９…へ取り付けられる。
【００１６】
前記第一段目及び第二段目の腹起こし材１２ａ、１２ｂの取り付け位置について説明する。第二段目の腹起こし材１２ｂは、図４の（イ）列の位置に建てた標準モジュール寸法の鋼矢板２Ａの上縁部よりも少し下がった位置にほぼ水平に配置され、その隣の（ロ）列の位置の鋼矢板２Ａの上部とボルト止め等による結合が行われる。第一段目の腹起こし材１２ａは、前記第二段目の腹起こし材１２ｂの位置よりはずっと下方の約１／４高さ付近の位置、即ち、コンクリート基礎５の上に建てた（ロ）列の位置の略１／２モジュール長さの鋼矢板２Ｂとのボルト止め等による結合が可能な高さ位置に設置される。図２中の符号１５は腹起こし材同士の接続金物を指している。
【００１７】
次に、コンクリート基礎５の上に第一段目の鋼矢板２を組み立てる要領を、図３と図４に基づいて説明する。
鋼矢板２としては、軽量型で本発明が標準と定めたモジュール長さ寸法（以下、標準モジュール寸法と云う＝長さ約１ｍ、幅寸は３５５ｍｍ、厚さ４〜６ｍｍ）の標準鋼矢板２Ａと、長さ寸法が約１／２モジュール寸法（長さ約５０ｃｍ）の短いハーフ鋼矢板２Ｂの２種を使用する。第一段目の鋼矢板２Ａと２Ｂは、下端をそれぞれ、コンクリート基礎５上の基礎梁８の溝内へ挿入して互い違いに配置する。隣接する鋼矢板同士はその両側縁に有するグリップ形状のスライドジョイント部３０を接合して（図５参照）、上記の支柱９の傾斜に沿って建て込む。図４中の（ロ）の列に属するハーフ鋼矢板２Ｂは、前記第一段目の腹起こし材１２ａとボルト止め等の手段で結合する。（イ）の列に属する標準鋼矢板２Ａは第一段目及び第二段目の腹起こし材１２ａ、１２ｂのいずれとも結合しない。鋼矢板２の建て込み時に必要な自由度を残すためである。
前記（ロ）の列に属するハーフ鋼矢板２Ｂの上に、標準モジュール寸法の標準鋼矢板２Ａをもう１枚建て込み、これを第二段目の腹起こし材１２ｂと結合して、第一段目の鋼矢板２の組み立て作業を終了する。
【００１８】
したがって、一段目の各鋼矢板２Ａ、２Ｂの上縁部（つまり、上下の鋼矢板２Ａ、２Ｂ同士の継目１４に相当）は、図４に示した通り、上下左右方向に背が低いものと背が高いものとが互い違いの配置、即ち段違いの千鳥状配置に形成される。
図３、図４に示すように、鋼矢板２の第一段目の組み立てを完成した状態で、最初の１ユニットの硬化材３充填工程を実施する。
硬化材３としては、通常コンクリートを使用することが多いが、現地発生土と砕石、水及びセメントから成るソイルセメント（請求項６記載の発明）などを、施工場所等の条件に応じて適宜選択して使用することができる。以下に説明する第２の実施形態についても略同様の技術的思想とする。
【００１９】
硬化材３を充填する工程は、前記第一段目の外壁１１の内側へ、少なくとも一段のアンカー材４をほぼ水平な姿勢で埋め込むに足る高さを１ユニットとして実施する。また、１ユニットの施工は、その層厚（２５〜１５０ｃｍ程度の範囲内、通例１００ｃｍ程度で実施される）を複数に分けた分量ずつ区分して充填し、転圧して養生を行う工程を、当該１ユニットの高さまで複数回に分けて繰り返し行う。なお、前記１ユニットの層厚が２５ｃｍ程度と薄い（低い）場合には複数回に分けて実施する必要はなく、１回で充填し、転圧して養生を行うこともできる（請求項３記載の発明）。以下に説明する第２の実施形態についても略同様の技術的思想とする。
【００２０】
更に、具体的に図３、図４の実施形態に基づいて硬化材３の充填工程を説明する。
コンクリート基礎５の上面から第二段目の腹起こし材１２ｂの位置を少し超える垂直高さＬ_１（約１００ｃｍ）のレベルまで（つまり、図４中（イ）列の標準鋼矢板２Ａの上縁近傍位置まで）を、硬化材３の１ユニットの充填作業として行う。この第一段階の充填作業は、具体的には前記１ユニットの充填層厚（約１００ｃｍ）を例えば２５ｃｍずつ４回に小分けして段階的に進める。その理由は、硬化材３を一定の層厚に充填した後、その層の硬化材３を集中的に振動ローラー等で転圧し、強度を発現するまで養生する工程を効果的に行う配慮による。
【００２１】
１ユニットの充填工程の終局に相当する第４回目の充填作業に先立ち、直前の充填工程で強度を発現し硬化した硬化材３の上面を作業員の足場に利用して、第二段目の腹起こし材１２ｂに予め用意した取付用孔へアンカー材４の一端を引っ掛けて止める等の手法で第一段目のアンカー材４を取り付ける。そして、同アンカー材４を例えば上方からワイヤーで吊るなどして略水平姿勢に保ち、レベルＬ_１までの硬化材３の充填工程を進める。その硬化材３の充填及び転圧、養生の工程を遂行することにより、前記第一段目のアンカー材４はほぼ水平な姿勢に充填材３の中に埋設され、その後強度を発現した硬化材３によるアンカー作用を受ける。よって、このアンカー材４は次上位の組立状態にある外壁１１（鋼矢板２）の自立支持及び形状保持機能を働く。
【００２２】
なお、前記アンカー材４は、外壁１１と硬化材３との一体化を更に高めるべく、その先端部を下向きに折り曲げて、既に充填した硬化材３に埋め込むように実施することが好ましい（請求項４記載の発明）。
上記したように硬化材３をレベルＬ_１まで充填する工程の間、前記外壁１１の下部は、硬化材３の充填圧力、及び転圧等による圧力などに対する耐力、及び剛性（形態保持性能）を、コンクリート基礎５へアンカーしたアンカー金具７とサポート材１０及び支柱９、並びに同支柱９…の間へ水平方向に取り付けた腹起こし材１２ａ、１２ｂによる架構で確保する。次上位以上に組み立てた外壁１１の耐力及び剛性は、上記したように直前のレベルＬ_１まで充填した硬化材３の中に埋設され強度を発現した硬化材３のアンカー作用を受けるアンカー材４の支持力によってもたらされる。
上記のようにして最初の１ユニットのレベルＬ_１まで硬化材３を充填し、その強度が発現した段階で、前記レベルＬ_１の硬化材３の上面を作業員の足場にして、次上位の鋼矢板２の組み立てが行われる。
【００２３】
図４に符号（イ）で示した列の背が低い鋼矢板２Ａの上に、矢印Ｙで示したように、標準モジュール寸法の鋼矢板２Ａ…を、両隣の１／２モジュール長さ分だけ上方へ突き出ている符号（ロ）の列の鋼矢板２Ａ、２Ａのジョイント部３０（図５参照）との接合を行いつつ順次建て込んで継ぎ足す。続いて、前記建て込みの結果、相対的に背が低くなった符号（ロ）の列の鋼矢板２Ａの上に、標準鋼矢板２Ａを両隣の鋼矢板２Ａのジョイント部と接合を行いつつ順次建て込んで継ぎ足す。そして、先に（イ）の列に建て込んだ二段目の鋼矢板２Ａの上縁より少し下がった位置に三段目の腹起こし材１２ｃを配置し、今度も（ロ）の列の鋼矢板２Ａとのみ結合を行って次上位の鋼矢板２の組み立てが終わる。
結局、次上位の鋼矢板２も（ロ）の列の鋼矢板２Ａが１／２モジュール寸法だけ先行して背が高く構築される。鋼矢板２による第一段目の外壁１１の組み立ては以下同様の作業工程を繰り返して行われる。よって各鋼矢板２Ａ、２Ｂの上縁部（継目）は上下左右に互い違いの配置となる千鳥状配置に組み立てられる。
【００２４】
上記外壁板１１の組み立て作業のときも、作業員は、レベルＬ_１まで先行して充填し硬化した硬化材３の上面を足場に利用できるから、外壁１１組み立て用の作業足場を組み立てる必要はない。標準モジュール寸法の鋼矢板２Ａは軽量型（軽量鋼矢板）であるから、人手により容易に運搬や持ち上げ等することができ、重機類を必要としない。
上記のとおり、第一段目の外壁１１を構成する各鋼矢板２Ａ、２Ｂの上縁部は、常に上下左右に段違いの千鳥状配置に接合して組み立てが進められるから、外壁１１の剛性度は平均して高い。また、外壁１１の組み立ては、標準モジュール寸法の鋼矢板２Ａの長さ（約１００ｃｍ）を１ユニットとして行う硬化材３の充填工程よりも、一工程分先行して行われる（請求項８記載の発明）。腹起こし材１２の上下方向ピッチも約１００ｃｍ間隔となる。腹起こし材１２の位置毎に段階的に取り付けを行う各段のアンカー材４の上下方向間隔も約１００ｃｍに配置されることになる。
【００２５】
以下、次のユニットの硬化材３の充填工程を、アンカー材４の設置と併せて上述した内容で行い、更に鋼矢板２の組み立てを先行して行う工程を、順次、所要の高さまで繰り返すことになる。
但し、外壁１１の上端部分に関しては、図２に示したように、再び標準モジュール寸法の１／２長さのハーフ鋼矢板２Ｂを併用することにより、上縁を水平方向に一直線状に揃え、その上縁部の上にアングル材等を使用した堤冠材１４を取り付ける（請求項５記載の発明）。
硬化材３は、前記外壁１１の天端Ｓ（堤冠材１４）から植栽部に必要な深さＴを除く高さＬ_２まで充填する。
つづいて、前記高さＬ_２まで充填した硬化材３の上面における厚さ方向に、植栽部を有するのに必要な幅寸Ｂ（本実施形態では５０ｃｍ程度）後退した部位にコンクリート基礎５を打設し、以下、前記した工程と同様の工程を行って第二段目の外壁２１を組み立てて、硬化材３を所要の高さまで充填する。
【００２６】
即ち、当該コンクリート基礎５の上に、第二段目の外壁２１の下端を挿入できる基礎梁８を配置し、同コンクリート基礎５の上面に固定したアンカー金具７によって前記基礎梁８を位置決めしており、前記アンカー金具７及びこれと結合した斜めのサポート材１０により比較的短い支柱９を法面勾配で立てて、前記支柱９の間に水平方向の腹起こし材１２を支持させる。
前記第二段目の外壁２１は、複数の短尺の鋼矢板２を組み合わせて成り、その第一段目の鋼矢板２の下端を前記基礎梁８の溝内に挿入して前記腹起こし材１２ａと結合し、水平方向に隣接する鋼矢板２同士はジョイント部で繋ぎ、且つ上下方向の鋼矢板２同士を突き合わせ接続して、その水平縁を上下左右方向に段違いの千鳥状配置に接合して前記腹起こし材１２ａと結合して組み立てる。
前記第二段目の外壁２１の内側面の一定高さ位置毎にアンカー材４をほぼ水平な姿勢で複数本ずつ段階的に取り付け、前記第二段目の外壁２１の内側に充填する硬化材３は、少なくとも一段の高さのアンカー材４をほぼ水平な姿勢で埋め込むに足る高さを１ユニットとして充填と養生を行う工程を、１回又は複数回に分けて繰り返し行い、所要の高さまで充填するのである。
【００２７】
つづいて、第一段目の外壁１１上部と第二段目の外壁２１下部との間に凹溝状の植栽部１３を形成し、前記植栽部１３に植栽用の土砂（図示を省略）を充填する。
以下必要に応じて、上記した工程と同様の工程を厚さ方向に繰り返し行うことにより、外壁部分の上下方向に一定幅の植栽部１３を複数段設け、植栽を行う。
ちなみに、本実施形態では、第三段目の外壁３１まで形成し、前記外壁２１、３１の前面にそれぞれ凹溝状の植栽部１３を設けて実施している（以上、請求項１及び７に記載した発明）。
【００２８】
次に、請求項９に記載した発明に係る植栽部を備えた土木構造物の構築工法の実施形態を図面に基づいて説明し、併せて請求項２に記載した発明に係る植栽部を備えた土木構造物の構成を逐次説明する。なお、硬化材３、アンカー材４等については、図１〜図５と同一の符号を付してその説明を適宜省略する。
本発明の構築工法は、図６に示したように、地山１の法面１ａが崩落するのを防ぐために構築される土留め擁壁（土木構造物）Ｖの長手方向（紙面と垂直方向）に沿って設置された外壁１６、２６、３６を構築し、その内側に、コンクリート等の硬化材３を段階的に充填して同土木構造物Ｖを構築する工法であり、前記外壁１６、２６、３６を複数の間伐材１７で組み立てることを特徴とする。
しかも、前記外壁１６、２６、３６は、一定の高さ位置毎に厚さ方向に順次後退して、そこに一定幅（本実施形態では５０ｃｍ程度）の凹溝状の植栽部１３を設け、その内面側には一定の高さ位置毎にほぼ水平姿勢のアンカー材４を複数本ずつ取り付け、これを硬化材３の中に埋め込み、強度を発現した硬化材３のアンカー作用で、外壁１６、２６、３６の自立支持及び形態保持を行うことも特徴としている。
【００２９】
以下、更に具体的な説明を進める。
先ず、間伐材１７で組み立てる第一段目の外壁１６の構築について説明する。図７〜図１３は、間伐材１７で組み立てる前記第一段目の外壁１６の組み立て要領を段階的に示している。
地盤上に打設したコンクリート基礎５ａの構築に際して予め埋め込みアンカーを用意するか、又は完成したコンクリート基礎５ａにアンカー用孔を削孔して彫り込みアンカーを用意するなどし、そのアンカーボルト６を利用して、アングル等によるアンカー金具７の内側端部を固定する。下端を前記アンカー金具７とボルト止め等の手段で結合した斜めのサポート材１０の上端部と、やはり下端を前記アンカー金具７とボルト止め等の手段で結合したＨ形鋼等の支柱１８の下部とを交わらせ、ボルトで固定する手法により、前記支柱１８は当該土木構造物Ｖについて設計された法面勾配に立てられ強固に支持される。前記支柱１８には、水平方向の間伐材１７をきっちり両端支持できる溝部を有するＨ形鋼等の鋼材が好適に使用され、一例として２ｍ程度の支柱１８として立てられている。
【００３０】
因みに、図中の符号１８ａは、前記支柱１８の上端に設けた引っ込みリブを示しており、次上位の支柱１８と一連にボルト接合する場合に用いられる。
なお、本実施形態に係るコンクリート基礎５ａは、前記アンカー金具７、サポート材１０等を少なくとも安定して載置できるように、所要の間隔（３ｍ程度）で断続的に設けて実施しているが、上記した第１の実施形態と同様に、構築する土木構造物Ｖの長手方向に沿って連続して設けて実施することもできる。ちなみに、前記コンクリート基礎５ａを断続的に設けて実施する場合には、隣り合うコンクリート基礎５ａ同士の間は、当該コンクリート基礎５ａの天端までコンクリート（硬化材）３を敷き均して締め固めを行っている。
【００３１】
上記のようにして立てた各支柱１８、１８…の間に、第一段目及び第二段目の腹起こし材１２ａと１２ｂがそれぞれ水平方向に配置されボルト止め等の手段で結合して架設支持されている。腹起こし材１２には通例アングル材が使用され、その上辺が水平面となる態様で支柱１８へ取り付けられる（以上、図７Ａ、Ｂ参照）。
図８に示したように、前記支柱１８、１８…の間に、第一段目の外壁１６を構築する間伐材１７を略水平な姿勢で順次落とし込んで積み重ね、前記支柱１８の略半分の高さ、すなわち１ｍ程度の高さの外壁を構築する。
図９に示したように、コンクリート基礎５ａの上面から第一段目の腹起こし材１２ａの位置を少し超える垂直高さＬ_１（約５０ｃｍ）のレベルまでを、硬化材３の１ユニットの充填作業として行う。この第一段階の充填作業は、具体的には前記１ユニットの充填層厚（約５０ｃｍ）を例えば２５ｃｍずつ２回に小分けして段階的に進める。その理由は、硬化材３を一定の層厚に充填した後、その層の硬化材３を集中的に振動ローラー等で転圧し、強度を発現するまで養生する工程を効果的に行う配慮による。
【００３２】
図１０に示したように、前記アンカー材４は、Ｕ字に曲がった先端部分を腹起こし材１２ａのプレート孔に引っ掛け、他方の折り曲げ加工された先端部分を硬化材３に打ち込むことによって固定する（請求項４記載の発明）。この第一段目のアンカー材４はほぼ水平な姿勢に充填材３の中に埋設され、その後、強度を発現した硬化材３によるアンカー作用を受ける。よって、このアンカー材４は次上位の外壁１６の自立支持及び形状保持機能を働く。
上記したように硬化材３をレベルＬ_１まで充填する工程の間、前記間伐材１７から成る外壁１６は、硬化材３の充填圧力、及び転圧等による圧力などに対する耐力、及び剛性（形態保持性能）を、コンクリート基礎５ａへアンカーしたアンカー金具７とサポート材１０及び支柱１８、並びに同支柱１８…の間へ水平方向に取り付けた腹起こし材１２ａ、１２ｂによる架構で確保する。次上位を形成する外壁１６の耐力及び剛性は、上記したように直前のレベルＬ_１まで充填した硬化材３の中に埋設され強度を発現した硬化材３のアンカー作用を受けるアンカー材４の支持力によってもたらされる。
【００３３】
上記のようにして最初の１ユニットのレベルＬ_１まで硬化材３を充填し、その強度が発現した段階で、前記レベルＬ_１の硬化材３の上面を作業員の足場にして、前記支柱１８、１８…の間に前記間伐材１７を略水平な姿勢で順次落とし込んで積み重ね、当該支柱１８の天端までの外壁を構築した後、前記硬化材３の充填工程を繰り返し行い、支柱１８の天端から５０ｃｍ程度低い高さ、すなわち１５０ｃｍ程度の高さまで土木構造物を構築する（図１１Ａ〜Ｃ参照）。作業員は、レベルＬ_１まで先行して充填し硬化した硬化材３の上面を足場に利用できるから、外壁１６の組み立て用の作業足場を組み立てる必要はない。１本の間伐材１７は、人手により容易に運搬や持ち上げ等することができ重機類を必要としない。
【００３４】
次に、図１２Ａ、Ｂに示したように、前記支柱１８の天端から５０ｃｍ程度低い高さまで硬化材３の打設が完了した後、前記支柱１８の上端に次上位の支柱１８を、その下端に設けた引っ込みリブ１８ａを利用して両者をボルト接合する。前記次上位の支柱１８を接合した後、第三段目の腹起こし材１２ｃを前記した同様の手順で当該支柱１８の内面側に取り付ける。ちなみに、連結する次上位の支柱１８の高さは、１．５ｍ程度とする。
上記のとおり、外壁１６の組み立て、即ち、間伐材１７の積み重ね作業は、１ユニットとして行う硬化材３の充填工程よりも、一工程分先行して行われる。腹起こし材１２の上下方向ピッチは約１００ｃｍ間隔となる。腹起こし材１２の位置毎に段階的に取り付けを行う各段のアンカー材４の上下方向間隔も約１００ｃｍに配置されることになる。
【００３５】
以下、次のユニットの硬化材３の充填工程を、アンカー材４の設置と併せて上述した内容で行い、硬化材３は、前記外壁１６の天端Ｓから植栽部１３に必要な深さＴを除く高さＬ_２（２５０ｃｍ程度）まで充填し、第１段目の外壁１６の構築を完了する。なお、外壁１６の上端部分に関しては、上記第１の実施形態と同様に、その上縁を水平方向に一直線状に揃え、その上縁部の上にアングル材等を使用した堤冠材１４を取り付けて実施してもよい（請求項５記載の発明）。
つづいて、前記高さＬ_２まで充填した硬化材３の上面に、植栽部１３の幅寸Ｂ（本実施形態では５０ｃｍ程度）だけ厚さ方向に後退した部位にコンクリート基礎５ａを打設し、以下、前記した工程と同様の工程を行って第二段目の外壁２６を前記間伐材を水平方向に積み重ねて組み立て、前記硬化材３を所要の高さまで充填する。
【００３６】
即ち、前記コンクリート基礎５ａの上にアンカー金具７を固定し、該アンカー金具７と結合した斜めのサポート材１０により前記間伐材１７を支持するＨ形鋼等の支柱１８を所望の法面勾配で立てて、前記支柱１８、１８…の間に水平方向の腹起こし材１２を支持させる。そして、前記支柱１８、１８…の間に略水平な間伐材１７を順次落とし込んで積み重ねて組み立てる。前記第二段目の外壁２６の内面側の一定高さ位置毎にアンカー材４をほぼ水平な姿勢で複数本ずつ段階的に取り付ける。前記第二段目の外壁２６の内側に充填する硬化材３は、少なくとも一段の高さのアンカー材４をほぼ水平な姿勢で埋め込むに足る高さを１ユニットとして充填と養生を行う工程を、１回又は複数回に分けて繰り返し行い、所要の高さまで充填する。
【００３７】
つづいて、第一段目の外壁１６上部と第二段目の外壁２６下部との間に凹溝状の植栽部１３を形成し、前記植栽部１３に植栽用の土砂（図示を省略）を充填する。
以下必要に応じて、上記した工程と同様の工程を厚さ方向に繰り返し行うことにより、外壁部分の上下方向に一定幅の植栽部１３を複数段設け、植栽を行う。
ちなみに、本実施形態では、第三段目の外壁３６まで形成し、前記外壁２６、３６の前面にそれぞれ凹溝状の植栽部１３を設けて実施している（以上、請求項２及び９に記載した発明）。
以上に実施形態を図面に基づいて説明したが、本発明は、図示例の実施形態の限りではなく、その技術的思想を逸脱しない範囲において、当業者が通常に行う設計変更、応用のバリエーションの範囲を含むことを念のために言及する。
例えば、上記した各実施形態に係る土木構造物は土留め擁壁として実施しているが、治山堰堤、砂防堰堤の下流側の外壁としても好適に実施できる。
【００３８】
【本発明の奏する効果】
請求項１〜９に記載した発明に係る植栽部を備えた土木構造物及びその構築工法によれば、下記する効果を奏する。
１）一定の高さ位置毎に厚さ方向に後退する外壁は、それぞれ独立した構造で、安定して自立しているので、タイロッド等の連結部材及び骨組み等を一切必要とせず、少ない部材点数、少ない工数で安定した土木構造物を構築することができ、コストの削減と作業効率の向上が可能である。
２）また、前記外壁の下端位置及び傾斜角度等を自在に定めることができ、外壁の定型化を容易に行うことができ、構造力学的にも大変優れている。
３）植栽部を備えているので、自然の景観を損なわず、環境の保護と調和を重視するニーズに十分に対応できる。
４）以上、堰堤や擁壁などの急勾配の法面も容易に緑化することができる、地球に優しい植栽部を備えた土木構造物を実現できるのである。
【図面の簡単な説明】
【図１】請求項１に記載した発明に係る土木構造物の実施形態を示す断面図である。
【図２】鋼矢板による外壁を一段目まで組み立てた状態を示す鳥瞰図である。
【図３】鋼矢板による外壁を組み立てる状況を示す側面図である。
【図４】鋼矢板による外壁を組み立てる状況を示す正面図である。
【図５】鋼矢板による外壁の組み立てた状態を示す平面図である。
【図６】請求項２に記載した発明に係る土木構造物の実施形態を示す断面図である。
【図７】Ａは、間伐材による外壁を組み立てる状況を示す正面図であり、Ｂは同側面図である。
【図８】Ａは、間伐材による外壁を組み立てる状況を示す正面図であり、Ｂは同側面図である。
【図９】間伐材による外壁を組み立てる状況を示す側面図である。
【図１０】間伐材による外壁を組み立てる状況を示す側面図である。
【図１１】Ａ〜Ｃは、間伐材による外壁を組み立てる状況を段階的に示す側面図である。
【図１２】Ａは、間伐材による外壁を組み立てる状況を示す正面図であり、Ｂは同側面図である。
【図１３】Ａは、間伐材による外壁を組み立てる状況を示す正面図であり、Ｂは同側面図である。
【符号の説明】
Ｗ、Ｖ土木構造物
１地山
１ａ法面
２鋼矢板
３硬化材（コンクリートなど）
４アンカー材
５、５ａコンクリート基礎
６アンカーボルト
７アンカー金具
８基礎梁
９、１８支柱
１０サポート材
１１、２１、３１鋼矢板による外壁
１６、２６、３６間伐材による外壁
１２腹起こし材
１３植栽部
１４堤冠材
１５接続金物
１７間伐材
３０ジョイント部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a civil engineering structure including a planting part constructed by filling a hard material such as concrete inside an outer wall made of a short steel sheet pile, or an outer wall made of thinned wood, and a construction method thereof. More specifically, a step-like slope is formed, and by providing a planting part in the plane space, it is suitably used for a retaining wall, or an outer wall on the downstream side of a forested dam or a sabo dam. The present invention relates to a civil engineering structure and its construction method.
[0002]
[Prior art]
A technique proposed by the present applicant as a retaining wall in which concrete is cast between the outer wall material and the slope of the natural ground, and a construction method thereof, using a short steel sheet pile as an outer wall material that also serves as a concrete formwork Has been published (see Patent Document 1).
This earth retaining wall and its construction method, as described in paragraphs [0002] to [0007] of the specification, are techniques that have solved all the problems of the prior art, It is very excellent in structural mechanics and can be said to be perfect.
In addition, as proposed in Japanese Patent Application No. 2002-199921 and Japanese Patent Application No. 2002-209420, the present applicant derives the outer wall material such as a short steel sheet pile along the positions of both side surfaces in the longitudinal direction. A so-called double wall type civil engineering structure constructed by filling a pair of outer wall materials facing each other and filled with a hardener such as concrete, and a construction method therefor have been developed. This technology is preferably implemented mainly for sabo dams and forestry dams, but it is also a technology that has solved all the problems of the prior art and is extremely excellent in construction, economics, and structural mechanics. It can be said that.
[Patent Document 1]
JP 2002-242210 A
[0003]
[Problems to be solved by the present invention]
However, the civil engineering structures developed by the present applicant, such as retaining retaining walls and sabo dams, are excellent in terms of construction, economics, and structural mechanics, but the entire exterior is made of outer wall materials such as steel sheet piles. It is said that there is still room for improvement in that it does not meet the needs of emphasizing protection and harmony of the environment because the natural landscape is damaged.
Therefore, the object of the present invention is very friendly in terms of construction, economics, and structural mechanics, and does not damage the natural landscape, and can sufficiently meet the needs of emphasizing environmental protection and harmony. It is providing the civil engineering structure provided with the planting part, and its construction method.
[0004]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems of the prior art, a civil engineering structure including a planting part according to the invention described in claim 1 is:
A civil engineering structure constructed by filling the inside of the outer wall with a hardening material such as concrete,
The outer wall of the civil engineering structure retreats in the thickness direction at every certain height position, and there is a planting part with a certain width there,
The outer wall is assembled with a plurality of short steel sheet piles on a concrete foundation, and on the inside thereof, a plurality of anchor materials in a substantially horizontal posture are provided for each fixed height position, from the top end of the outer wall A concrete foundation is placed on the upper surface of the hardened material, which is filled with a hardener to a height excluding the depth required for the planting part, and retreated in the thickness direction by the width of the planting part. And the outer wall of the next upper stage is assembled with the steel sheet pile, and a grooved planting part is formed between the outer wall of the lower stage and the outer wall of the next upper stage, and is planted in the planting part. Filled with soil for planting,
Hereinafter, similarly, a plurality of stages of planting portions are provided in the vertical direction of the outer wall portion, and planting is performed.
[0005]
The civil engineering structure provided with the planting part which concerns on the invention described in Claim 2 is
A civil engineering structure constructed by filling the inside of the outer wall with a hardening material such as concrete,
The outer wall of the civil engineering structure retreats in the thickness direction at every certain height position, and there is a planting part with a certain width there,
The outer wall is assembled by stacking a plurality of thinned timbers on a concrete foundation in a horizontal direction, and a plurality of anchor materials in a substantially horizontal posture are provided inside the outer wall for each fixed height position. A portion that is filled with a hardener from the top to a height excluding the depth required for the planting part and embeds the anchor material, and recedes in the thickness direction by the width of the planting part on the upper surface of the hardener A concrete foundation is provided on the outer wall of the next upper layer, and the thinned timber is stacked in a horizontal direction to form a grooved planting portion between the outer wall of the lower step and the outer wall of the next upper step. The planting part is filled with soil for planting,
Hereinafter, similarly, a plurality of stages of planting portions are provided in the vertical direction of the outer wall portion, and planting is performed.
[0006]
The invention described in claim 3 is the civil engineering structure provided with the planting part described in claim 1 or 2,
The hardening material to be filled inside the outer wall is filled with a unit divided into one or a plurality of times, with a height sufficient to embed at least one anchor material in a substantially horizontal posture, and is cured. It is filled.
[0007]
In the civil engineering structure provided with the planting part described in any one of claims 1 to 3, the invention described in claim 4
The anchor material is characterized in that one end thereof is attached to the belly raising material and the other end is bent downward.
[0008]
In the civil engineering structure provided with the planting part described in any one of claims 1 to 4, the invention described in claim 5
The height of the upper edge portion of the outer wall is aligned in the horizontal direction, and a levee material is attached on the upper edge portion.
[0009]
In the civil engineering structure provided with the planting part described in any one of claims 1 to 5, the invention described in claim 6
The hardener is a soil cement made of locally generated soil and crushed stone, water and cement.
[0010]
The construction method of the civil engineering structure provided with the planting part according to the invention described in claim 7,
It is a construction method for civil engineering structures in which the inside of the outer wall is filled with a hardening material such as concrete in stages,
The outer wall is assembled with a plurality of short steel sheet piles on a concrete foundation, and a plurality of anchor members in a substantially horizontal posture are attached in stages to each of the fixed height positions, and planted from the top end of the outer wall. Fill the hardened material step by step to the height excluding the depth required for the planting section, embed the anchor material, and place the concrete foundation on the upper surface of the hardened material at the site retreated in the thickness direction by the width dimension of the planting part On which the next upper outer wall is assembled with the steel sheet pile to form a grooved planting portion between the lower outer wall and the next upper outer wall, and planted in the planting portion Filling with earth and sand,
The lower part of the outer wall is arranged on the upper surface of the concrete foundation with a foundation beam that is a groove-shaped cross-section material that opens upward so that the lower end of the steel sheet pile can be inserted, and the foundation beam is fixed by an anchor fitting fixed to the upper surface of the concrete foundation. A relatively short column is raised with a desired slope by the anchor bracket and the diagonal support member coupled thereto, and a horizontal erection material is supported between the columns, and the foundation beam A steel sheet pile having a lower end inserted into the groove of the pallet is bonded to and supported by the bellows material,
Hereinafter, the same process is repeated, and the outer wall is retreated in the thickness direction at a certain height position, and a plurality of planting portions having a constant width are provided in the vertical direction of the outer wall portion, and planting is performed. To do.
[0011]
Invention of Claim 8 is the construction method of the civil engineering structure provided with the planting part described in Claim 7,
The short steel sheet piles that make up the outer wall are joined in a staggered arrangement of steel sheet piles processed to the module length and approximately 1/2 module length on the first stage on the concrete foundation, and the upper edge seam is Form a staggered staggered arrangement in which the ones that are short in the left-right direction and the ones that are tall are staggered, and advance assembly by at least one step ahead of the top of the hardened material to be filled. Features.
[0012]
The construction method of the civil engineering structure provided with the planting part according to the invention described in claim 9,
It is a construction method for civil engineering structures in which the inside of the outer wall is filled with a hardening material such as concrete in stages,
The outer wall is constructed by stacking a plurality of thinned timbers on a concrete foundation in a horizontal direction, and by installing a plurality of anchor members in a substantially horizontal position at a certain height in stages, in a stepwise manner. Filled with the hardener stepwise from the edge to the height excluding the depth required for the planting part, embedded the anchor material, and the part of the upper surface of the hardener retreated in the thickness direction by the width dimension of the planting part A concrete foundation is provided on the outer wall of the next upper stage, and the thinned wood is stacked in a horizontal direction and assembled to form a grooved planting portion between the outer wall of the lower stage and the outer wall of the next upper stage, Filling the planting part with soil for planting,
The lower part of the outer wall fixes an anchor metal fitting to the upper surface of a concrete foundation, and stands a pillar such as H-shaped steel that supports the thinned wood with an inclined support material combined with the anchor metal fitting with a desired slope. Supporting a horizontal flank between the struts,
Hereinafter, the same process is repeated, and the outer wall is retreated in the thickness direction at a certain height position, and a plurality of planting portions having a constant width are provided in the vertical direction of the outer wall portion, and planting is performed. To do.
[0013]
[Embodiments and Examples of the Present Invention]
First, an embodiment of a construction method for a civil engineering structure provided with a planting part according to the invention described in claim 7 will be described based on the drawings, and a planting part according to the invention described in claim 1 will be described. The structure of the civil engineering structure provided will be described sequentially.
As shown in FIG. 1, the construction method of the present invention is the longitudinal direction (perpendicular to the paper surface) of the retaining wall (civil structure) W constructed to prevent the slope 1a of the natural ground 1 from collapsing. ) Are constructed along the outer walls 11, 21, and 31, and the inner wall is filled with a hardening material 3 such as concrete step by step to construct the civil engineering structure W. 21 and 31 are assembled with a plurality of short steel sheet piles 2.
Moreover, the outer walls 11, 21, and 31 are sequentially retreated in the thickness direction at a certain height position, and provided with a groove-shaped planting portion 13 having a certain width (about 50 cm in this embodiment). A plurality of anchor members 4 in a substantially horizontal posture are attached to the inner surface of the outer wall 11 at fixed height positions, and the outer walls 11 are embedded in the hardener 3 by the anchor action of the hardener 3 exhibiting strength. , 21 and 31 is also characterized in that it performs self-supporting and shape maintenance.
[0014]
Hereinafter, more specific description will be made.
First, the construction of the first-stage outer wall 11 assembled with the steel sheet pile 2 will be described. FIG. 2 partially shows an example of the completed state of the first-stage outer wall 11 assembled with a plurality of short steel sheet piles 2, and FIGS. 3 to 5 show the assembly procedure of the outer wall 11.
3 and 4 show a state in which the outer wall 11 of the first stage is assembled on the concrete foundation 5 placed on the ground. When constructing the concrete foundation 5, an embedded anchor is prepared in advance, or an anchor is prepared by drilling an anchor hole in the finished concrete foundation 5, and the anchor bolt 6 is used to fix the anchor by an angle or the like. The inner end of the metal fitting 7 is fixed. The bottom end of the steel sheet pile 2 can be inserted into the outer end of the anchor fitting 7 and the foundation beam 8 which is a groove-shaped cross-sectional material opened upward to determine the position thereof is in a substantially perpendicular direction (longitudinal direction of the civil engineering structure W). The foundation beam 8 is positioned and fixed by the anchor metal fittings 7.
[0015]
A plurality of the anchor fittings 7 are installed in the longitudinal direction of the foundation beam 8 at intervals (about 2 m) corresponding to the installation positions of the columns 9. The lower end is joined to the anchor bracket 7 by means such as bolting, and the upper end of the diagonal support member 10 is inserted into the groove of the foundation beam 8 and the center of the outer wall cross section is positioned by bolting or the like. The support column 9 is raised to a desired slope slope designed for the civil engineering structure W and is firmly supported by a method of crossing the upper portion of the support column 9 and fixing with a bolt. Angle material etc. are used for the support | pillar 9, and it is a little longer than the steel sheet pile 2A of the standard module dimension (for example, about 1 m in length) which mentions later, In other words, only the 1st step of the lower part of the outer wall 11 is supported. It is set up as a relatively short support 9.
Between the support columns 9, 9... Standing as described above, the first-stage and second-stage flank members 12 a and 12 b are respectively arranged in the horizontal direction and are joined by means such as bolting. It is supported. An angle material is usually used for the wobbing material 12, and is attached to the column 9 in such a manner that its upper side is a horizontal surface.
[0016]
The attachment positions of the first-stage and second-stage bellows 12a, 12b will be described. The bellows member 12b in the second stage is disposed almost horizontally at a position slightly lower than the upper edge of the steel sheet pile 2A having the standard module dimensions built in the position of the row (a) in FIG. (B) The upper part of the steel sheet pile 2A at the position of the row and the connection by bolting or the like are performed. The first-stage erection material 12a is constructed on a position near a height of about ¼, which is far below the position of the second-stage erection material 12b, that is, on the concrete foundation 5 (b) ) It is installed at a height position where it can be coupled with a steel sheet pile 2B having a length of approximately 1/2 module of the row position by bolting or the like. The code | symbol 15 in FIG.
[0017]
Next, the procedure for assembling the first-stage steel sheet pile 2 on the concrete foundation 5 will be described with reference to FIGS. 3 and 4.
As the steel sheet pile 2, a standard steel sheet pile 2A of a lightweight type and having a module length defined as standard by the present invention (hereinafter referred to as a standard module dimension = length of about 1 m, a width of 355 mm, and a thickness of 4 to 6 mm). Two types of short steel sheet piles 2B having a length dimension of about 1/2 module (length: about 50 cm) are used. The first-stage steel sheet piles 2 </ b> A and 2 </ b> B are alternately arranged by inserting the lower ends into the grooves of the foundation beam 8 on the concrete foundation 5. Adjacent steel sheet piles are joined along the slope of the column 9 by joining the grip-shaped slide joint portions 30 on both side edges (see FIG. 5). The half steel sheet piles 2B belonging to the row (b) in FIG. 4 are coupled to the first-stage bellows 12a by means such as bolting. The standard steel sheet pile 2A belonging to the row (A) is not coupled to any of the first-stage and second-stage bellows 12a, 12b. This is to leave a degree of freedom necessary when the steel sheet pile 2 is built.
On the half steel sheet pile 2B belonging to the row (b), another standard steel sheet pile 2A having a standard module size is built, and this is combined with the second flank member 12b. The assembly work of the steel sheet pile 2 is finished.
[0018]
Therefore, the upper edge of each steel sheet pile 2A, 2B in the first stage (that is, the seam 14 between the upper and lower steel sheet piles 2A, 2B) is short in the vertical and horizontal directions as shown in FIG. The tall ones are formed in a staggered arrangement, that is, in a staggered arrangement of steps.
As shown in FIG. 3 and FIG. 4, in the state where the assembly of the first stage of the steel sheet pile 2 is completed, the first unit of the hardening material 3 filling step is performed.
Concrete is usually used as the hardener 3, but soil cement (invented in claim 6) composed of locally generated soil and crushed stone, water and cement is appropriately selected according to the conditions of the construction site, etc. Can be used. The second embodiment described below has substantially the same technical idea.
[0019]
The step of filling the hardening material 3 is carried out with a height sufficient to embed at least one anchor material 4 in a substantially horizontal posture inside the outer wall 11 of the first stage. In addition, the construction of one unit is a process in which the layer thickness (within a range of about 25 to 150 cm, typically implemented at about 100 cm) is divided into a plurality of divided portions, filled, rolled, and cured. Repeat the process in several times up to the height of the unit. In addition, when the layer thickness of said 1 unit is as thin as about 25 cm (it is low), it is not necessary to carry out by dividing into multiple times, and it can carry out curing by filling and rolling in one time. Invention). The second embodiment described below has substantially the same technical idea.
[0020]
Furthermore, the filling step of the curing material 3 will be described specifically based on the embodiment of FIGS.
Vertical height L slightly exceeding the position of the second-stage flank 12b from the top surface of the concrete foundation 5 ₁ Filling up to the level of (about 100 cm) (that is, up to the position near the upper edge of the standard steel sheet pile 2A in row (a) in FIG. 4) is performed as a filling operation of one unit of the hardener 3 Specifically, the filling operation in the first stage is advanced stepwise by subdividing the packed layer thickness (about 100 cm) of the one unit into 4 times, for example, 25 cm. The reason is due to consideration of effectively performing a curing process after filling the curing material 3 to a certain layer thickness and then intensively rolling the curing material 3 of the layer with a vibration roller or the like to develop strength.
[0021]
Prior to the fourth filling operation corresponding to the end of the filling process of one unit, the upper surface of the hardened material 3 that has developed and hardened in the immediately preceding filling process is used as a scaffold for the worker. The first-stage anchor material 4 is attached by a method such as hooking one end of the anchor material 4 to a mounting hole prepared in advance in the belly urging material 12b. Then, the anchor material 4 is kept in a substantially horizontal posture by suspending it with a wire from above, for example, level L ₁ The filling process of the hardener 3 is advanced. By performing the filling, rolling, and curing processes of the hardener 3, the first-stage anchor material 4 is embedded in the filler 3 in a substantially horizontal posture, and thereafter the hardener that has developed strength. 3 receives the anchor action. Therefore, this anchor material 4 functions as a self-supporting and shape maintaining function of the outer wall 11 (steel sheet pile 2) in the next higher assembly state.
[0022]
In addition, it is preferable to implement the said anchor material 4 so that the integration of the outer wall 11 and the hardening | curing material 3 may be further improved, and the front-end | tip part may be bent downward and embedded in the already-filled hardening | curing material 3 (Claims). 4).
As described above, set the curing material 3 to level L. ₁ During the step of filling up to the bottom, the lower part of the outer wall 11 is provided with an anchor fitting 7 that anchors the filling pressure of the hardener 3 and the proof stress and the rigidity (form retention performance) to the concrete foundation 5 with respect to the pressure due to rolling and the like. It secures with the frame by the support material 10 and the support | pillar 9, and the belly raising materials 12a and 12b attached to the horizontal direction between the support | pillars 9 .... As described above, the strength and rigidity of the outer wall 11 assembled to the next higher level or higher is the level L just before ₁ This is brought about by the supporting force of the anchor material 4 which receives the anchor action of the hardened material 3 embedded in the hardened material 3 filled up to and having developed strength.
Level L of the first unit as above ₁ In the stage where the hardening material 3 is filled and the strength is developed, the level L ₁ The upper steel sheet pile 2 is assembled using the upper surface of the hardened material 3 as a scaffold for the worker.
[0023]
As shown by the arrow Y, the steel sheet pile 2A of the standard module dimension is placed on the steel sheet pile 2A having the short height in the row indicated by the symbol (A) in FIG. The steel sheet piles 2 </ b> A and 2 </ b> A in the row (b) protruding upward are sequentially built and added while being joined to the joint portion 30 (see FIG. 5). Subsequently, as a result of the erection, the standard steel sheet pile 2A is sequentially joined to the joint portions of the adjacent steel sheet piles 2A on the steel sheet piles 2A of the row (B) whose height is relatively low. Build and add. Then, the third-stage flank member 12c is arranged at a position slightly lower than the upper edge of the second-stage steel sheet pile 2A previously built in the row (A). Only the sheet pile 2A is connected, and the assembly of the next upper steel sheet pile 2 is completed.
Eventually, the steel sheet pile 2 of the next higher rank is constructed taller with the steel sheet pile 2A in the row (B) being advanced by 1/2 module dimension. The assembly of the outer wall 11 of the first stage by the steel sheet pile 2 is performed by repeating the same operation process below. Therefore, the upper edge part (seam) of each steel sheet pile 2A, 2B is assembled in the zigzag arrangement which becomes an arrangement | positioning alternately up and down and right and left.
[0024]
Even during the assembly work of the outer wall plate 11, ₁ It is not necessary to assemble a work scaffold for assembling the outer wall 11 because the upper surface of the hardened material 3 that has been filled and cured in advance can be used as a scaffold. Since the steel sheet pile 2A having standard module dimensions is a lightweight type (lightweight steel sheet pile), it can be easily transported and lifted manually, and does not require heavy machinery.
As described above, the upper edge portions of the steel sheet piles 2A and 2B constituting the outer wall 11 of the first stage are always joined in a staggered arrangement of steps up and down and left and right. Is high on average. Further, the assembly of the outer wall 11 is performed one step ahead of the filling step of the hardened material 3 in which the length (about 100 cm) of the steel sheet pile 2A having a standard module size is set as one unit (claim 8). invention). The vertical pitch of the erection material 12 is also about 100 cm apart. The vertical spacing of the anchor material 4 at each stage, which is attached step by step for each position of the stomach raising material 12, is also arranged at about 100 cm.
[0025]
Hereinafter, the process of filling the hardening material 3 of the next unit is performed with the contents described above in conjunction with the installation of the anchor material 4, and the process of preceding assembly of the steel sheet pile 2 is sequentially repeated to the required height. become.
However, with respect to the upper end portion of the outer wall 11, as shown in FIG. 2, the upper edge is aligned in a straight line in the horizontal direction by using the half steel sheet pile 2B of 1/2 length of the standard module size again. A bank member 14 using an angle member or the like is attached on the upper edge (the invention according to claim 5).
The hardening material 3 has a height L excluding a depth T necessary for the planting part from the top edge S (the bank material 14) of the outer wall 11. ₂ Fill up to.
Next, the height L ₂ In the thickness direction on the upper surface of the hardened material 3 filled up to, the concrete foundation 5 is placed in a portion that is retreated by the width B (about 50 cm in the present embodiment) necessary to have a planting portion. A process similar to the process is performed to assemble the outer wall 21 of the second stage, and the curing material 3 is filled to a required height.
[0026]
That is, on the concrete foundation 5, a foundation beam 8 capable of inserting the lower end of the second-stage outer wall 21 is arranged, and the foundation beam 8 is positioned by the anchor metal fitting 7 fixed to the upper surface of the concrete foundation 5. A relatively short support column 9 is raised with a slope of slope by the anchor fitting 7 and the diagonal support member 10 coupled thereto, and a horizontal urging member 12 is supported between the support columns 9.
The outer wall 21 of the second stage is formed by combining a plurality of short steel sheet piles 2, and the lower end of the first stage steel sheet pile 2 is inserted into the groove of the foundation beam 8 so as to form the bellows 12a. The steel sheet piles 2 that are adjacent to each other in the horizontal direction are connected by a joint portion, and the steel sheet piles 2 in the vertical direction are butted and connected to each other, and the horizontal edges thereof are joined in a staggered arrangement that is uneven in the vertical and horizontal directions. Assemble and assemble with the bellows 12a.
A plurality of anchor materials 4 are attached step by step in a substantially horizontal posture at every fixed height position on the inner side surface of the second-stage outer wall 21 and filled inside the second-stage outer wall 21. 3. Repeat the process of filling and curing at least one step at a height sufficient to embed at least one level of anchor material 4 in a substantially horizontal posture, once or several times, up to the required height Fill.
[0027]
Subsequently, a groove-shaped planting part 13 is formed between the upper part of the outer wall 11 of the first stage and the lower part of the outer wall 21 of the second stage, and soil for planting (shown in the figure) is formed in the planting part 13. (Omitted) is filled.
Thereafter, if necessary, the same steps as those described above are repeated in the thickness direction to provide a plurality of stages of planting portions 13 having a certain width in the vertical direction of the outer wall portion, and planting is performed.
Incidentally, in this embodiment, it forms to the outer wall 31 of the 3rd step | paragraph, and it has implemented by providing the groove-shaped planting part 13 in the front surface of the said outer walls 21 and 31, respectively (above, Claim 1 and 7). Invention described in the above).
[0028]
Next, an embodiment of a construction method for a civil engineering structure provided with a planting part according to the invention described in claim 9 will be described based on the drawings, and a planting part according to the invention described in claim 2 will be described. The structure of the civil engineering structure provided will be described sequentially. In addition, about the hardening | curing material 3, the anchor material 4, etc., the code | symbol same as FIGS. 1-5 is attached | subjected and the description is abbreviate | omitted suitably.
As shown in FIG. 6, the construction method of the present invention is the longitudinal direction (perpendicular to the paper surface) of the retaining wall (civil structure) V constructed to prevent the slope 1a of the natural ground 1 from collapsing. ) Are constructed along the inner walls 16, 26, and 36, and the inside of the outer walls 16, 26, and 36 are gradually filled with a hardening material 3 such as concrete to construct the civil engineering structure V, and the outer walls 16, 26 and 36 are assembled with a plurality of thinned materials 17.
Moreover, the outer walls 16, 26, and 36 are sequentially retreated in the thickness direction at a certain height position, and provided with a groove-shaped planting portion 13 having a certain width (about 50 cm in this embodiment). On the inner surface side, a plurality of anchor members 4 in a substantially horizontal posture are attached at every fixed height position, embedded in the hardening material 3, and the outer wall 16 is anchored by the anchoring action of the hardening material 3 exhibiting strength. , 26 and 36 are characterized in that they are self-supporting and form-maintaining.
[0029]
Hereinafter, more specific description will be made.
First, the construction of the first outer wall 16 assembled with the thinned material 17 will be described. 7 to 13 show steps for assembling the first-stage outer wall 16 assembled with the thinned material 17 in stages.
When the concrete foundation 5a placed on the ground is constructed, an embedded anchor is prepared in advance or an anchor hole is prepared by drilling an anchor hole in the completed concrete foundation 5a. Then, the inner end of the anchor fitting 7 is fixed by an angle or the like. An upper end portion of an oblique support member 10 having a lower end coupled to the anchor fitting 7 by means such as bolting, and a lower portion of a column 18 such as an H-shaped steel having a lower end coupled to the anchor fitting 7 by means such as bolting. And the column 18 are fixed with bolts, and the column 18 is firmly supported by the slope slope designed for the civil engineering structure V. A steel material such as an H-shaped steel having a groove that can support both ends of the thinning material 17 in the horizontal direction is preferably used for the support column 18. As an example, the support column 18 stands as a support column 18 of about 2 m.
[0030]
Incidentally, reference numeral 18a in the figure denotes a retraction rib provided at the upper end of the support column 18 and is used when a bolt connection is made in series with the next higher support column 18.
In addition, although the concrete foundation 5a which concerns on this embodiment is provided intermittently by the required space | interval (about 3 m) so that the said anchor metal fitting 7, the support material 10, etc. can be mounted at least stably, it is implementing. Similarly to the first embodiment described above, the construction can be carried out continuously along the longitudinal direction of the civil engineering structure V to be constructed. By the way, when the concrete foundation 5a is intermittently provided, the concrete (hardening material) 3 is spread and compacted between the adjacent concrete foundations 5a up to the top of the concrete foundation 5a. Is going.
[0031]
Between the support columns 18, 18... Standing as described above, the first-stage and second-stage bell-raised members 12 a and 12 b are respectively arranged in the horizontal direction and are joined by means such as bolting. It is supported. An angle material is usually used for the wobbing material 12, and is attached to the support column 18 in such a manner that its upper side is a horizontal surface (see FIGS. 7A and 7B).
As shown in FIG. 8, the thinned wood 17 for constructing the outer wall 16 of the first stage is sequentially dropped and stacked in a substantially horizontal posture between the pillars 18, 18. That is, an outer wall having a height of about 1 m is constructed.
As shown in FIG. 9, the vertical height L slightly exceeds the position of the first raising member 12 a from the upper surface of the concrete foundation 5 a. ₁ Up to the level of (about 50 cm) is performed as a filling operation for one unit of the curing material 3. More specifically, the filling operation in the first stage proceeds stepwise by dividing the packed layer thickness (about 50 cm) of the one unit into, for example, 25 cm by two. The reason is due to consideration of effectively performing a curing process after filling the curing material 3 to a certain layer thickness and then intensively rolling the curing material 3 of the layer with a vibration roller or the like to develop strength.
[0032]
As shown in FIG. 10, the anchor material 4 is fixed by hooking the tip portion bent in a U shape into the plate hole of the flank material 12 a and driving the other bent tip portion into the hardening material 3. (Invention of Claim 4). The anchor material 4 in the first stage is embedded in the filler 3 in a substantially horizontal posture, and thereafter receives an anchor action by the hardening material 3 exhibiting strength. Accordingly, the anchor material 4 functions to support and support the shape of the outer wall 16 of the next higher level.
As described above, set the curing material 3 to level L. ₁ The outer wall 16 made of the thinned material 17 is anchored to the concrete foundation 5a with the strength against the filling pressure of the hardened material 3 and the pressure caused by rolling or the like, and the rigidity (form retention performance). It secures with the frame by the belly raising materials 12a and 12b attached to the metal fitting 7, the support material 10, the support | pillar 18, and the support | pillar 18 ... in the horizontal direction. As described above, the proof stress and rigidity of the outer wall 16 forming the next higher level are the level L immediately before. ₁ This is brought about by the supporting force of the anchor material 4 which receives the anchor action of the hardened material 3 embedded in the hardened material 3 filled up to and having developed strength.
[0033]
Level L of the first unit as above ₁ In the stage where the hardening material 3 is filled and the strength is developed, the level L ₁ With the upper surface of the hardened material 3 used as a scaffold for workers, the thinned material 17 was sequentially dropped and stacked in a substantially horizontal posture between the pillars 18, 18... To construct an outer wall up to the top of the pillar 18. Then, the filling process of the said hardening material 3 is repeated, and a civil engineering structure is constructed | assembled to the height about 50 cm low from the top end of the support | pillar 18, ie, about 150 cm (refer FIG. 11A-C). Workers are at level L ₁ Since the upper surface of the hardened material 3 that has been filled and cured in advance can be used as a scaffold, there is no need to assemble a work scaffold for assembling the outer wall 16. One thinned material 17 can be easily transported and lifted manually, and does not require heavy machinery.
[0034]
Next, as shown in FIGS. 12A and 12B, after the setting of the curing material 3 is completed to a height about 50 cm lower than the top end of the support column 18, the next upper support column 18 is placed on the upper end of the support column 18. Both of them are bolted together using a retraction rib 18a provided at the lower end. After the next upper strut 18 is joined, the third-stage belly raising material 12c is attached to the inner surface side of the strut 18 in the same procedure as described above. Incidentally, the height of the next upper strut 18 to be connected is about 1.5 m.
As described above, the assembly of the outer wall 16, that is, the stacking operation of the thinned material 17, is performed one process ahead of the filling process of the hardened material 3 performed as one unit. The up-and-down direction pitch of the erection material 12 is about 100 cm. The vertical spacing of the anchor material 4 at each stage, which is attached step by step for each position of the stomach raising material 12, is also arranged at about 100 cm.
[0035]
Hereinafter, the filling process of the curing material 3 of the next unit is performed with the above-described content in conjunction with the installation of the anchor material 4, and the curing material 3 has a depth necessary for the planting part 13 from the top end S of the outer wall 16. Height L excluding T ₂ (Up to about 250 cm), the construction of the outer wall 16 of the first stage is completed. As for the upper end portion of the outer wall 16, as in the first embodiment, the upper edge of the outer wall 16 is aligned in a straight line in the horizontal direction, and an embankment material 14 using an angle material or the like is provided on the upper edge portion. It may be carried out by attaching (the invention according to claim 5).
Next, the height L ₂ A concrete foundation 5a is placed on the upper surface of the hardened material 3 filled up to a site that is retreated in the thickness direction by a width B (about 50 cm in the present embodiment) of the planting portion 13, and the same as the above-described steps. The above-described process is performed to assemble the second stage outer wall 26 by stacking the thinned materials in the horizontal direction and filling the hardened material 3 to a required height.
[0036]
That is, the anchor bracket 7 is fixed on the concrete foundation 5a, and the pillars 18 such as H-shaped steel that supports the thinned material 17 by the diagonal support member 10 coupled to the anchor bracket 7 are formed with a desired slope. The horizontal erection material 12 is supported between the uprights 18, 18. And the substantially horizontal thinning material 17 is dropped sequentially between the pillars 18, 18. A plurality of anchor members 4 are attached step by step in a substantially horizontal posture at every fixed height position on the inner surface side of the outer wall 26 of the second stage. The curing material 3 to be filled inside the second-stage outer wall 26 is a process of filling and curing at a height sufficient to embed the anchor material 4 having at least one height in a substantially horizontal posture, as a unit. Repeat once or multiple times to fill up to the required height.
[0037]
Subsequently, a concave groove-shaped planting part 13 is formed between the upper part of the outer wall 16 of the first stage and the lower part of the outer wall 26 of the second stage. (Omitted) is filled.
Thereafter, if necessary, the same steps as those described above are repeated in the thickness direction to provide a plurality of stages of planting portions 13 having a certain width in the vertical direction of the outer wall portion, and planting is performed.
Incidentally, in this embodiment, it forms to the outer wall 36 of the 3rd step | paragraph, and it has implemented by providing the groove-shaped planting part 13 in the front surface of the said outer walls 26 and 36, respectively (above, Claim 2 and 9). Invention described in the above).
The embodiments have been described with reference to the drawings. However, the present invention is not limited to the illustrated embodiments, and design modifications and application variations that are usually made by those skilled in the art are within the scope of the technical idea of the invention. Note that it includes the range.
For example, although the civil engineering structure according to each of the embodiments described above is implemented as a retaining retaining wall, it can also be suitably implemented as an outer wall on the downstream side of a forested dam or a sabo dam.
[0038]
[Effects of the present invention]
According to the civil engineering structure provided with the planting part which concerns on the invention described in Claims 1-9, and its construction method, there exist the effects described below.
1) The outer wall that retreats in the thickness direction at every fixed height position is independent and stable and independent, so there is no need for connecting members such as tie rods and frames, and the number of members is small. Therefore, it is possible to construct a stable civil engineering structure with less man-hours, and it is possible to reduce costs and improve work efficiency.
2) Further, the lower end position and the inclination angle of the outer wall can be freely determined, the outer wall can be easily shaped, and the structural mechanics is very excellent.
3) Since it has a planting department, it can fully meet the needs of environmental protection and harmony without damaging the natural landscape.
4) As described above, it is possible to realize a civil engineering structure equipped with an earth-friendly planting section that can easily plant steep slopes such as dams and retaining walls.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a civil engineering structure according to the first aspect of the present invention.
FIG. 2 is a bird's eye view showing a state where the outer wall of the steel sheet pile is assembled to the first level.
FIG. 3 is a side view showing a situation in which an outer wall is assembled from steel sheet piles.
FIG. 4 is a front view showing a situation in which an outer wall is assembled from steel sheet piles.
FIG. 5 is a plan view showing an assembled state of the outer wall of the steel sheet pile.
FIG. 6 is a cross-sectional view showing an embodiment of a civil engineering structure according to the second aspect of the present invention.
FIG. 7A is a front view showing a state of assembling an outer wall made of thinned wood, and FIG. 7B is a side view of the same.
FIG. 8A is a front view showing a situation of assembling an outer wall made of thinned wood, and B is a side view thereof.
FIG. 9 is a side view showing a state of assembling an outer wall made of thinned wood.
FIG. 10 is a side view showing a state of assembling an outer wall made of thinned wood.
FIGS. 11A to 11C are side views showing steps of assembling an outer wall made of thinned wood. FIGS.
FIG. 12A is a front view showing a situation in which an outer wall is made of thinned wood, and FIG. 12B is a side view of the same.
FIG. 13A is a front view showing a situation in which an outer wall is assembled from thinned wood, and FIG. 13B is a side view of the same.
[Explanation of symbols]
W, V Civil engineering structures
1 Ground
1a Slope
2 Steel sheet pile
3 Hardener (concrete, etc.)
4 Anchor material
5, 5a Concrete foundation
6 Anchor bolt
7 Anchor bracket
8 Foundation beams
9, 18 prop
10 Support material
11, 21, 31 Outer wall made of steel sheet pile
16, 26, 36 Outer wall made of thinned wood
12 Upset material
13 Planting department
14 Embankment material
15 Connection hardware
17 Thinned wood
30 Joint part

Claims

A civil engineering structure constructed by filling the inside of the outer wall with a hardening material such as concrete,
The outer wall of the civil engineering structure retreats in the thickness direction at every certain height position, and there is a planting part with a certain width there,
The outer wall is assembled with a plurality of short steel sheet piles on a concrete foundation, and on the inside thereof, a plurality of anchor materials in a substantially horizontal posture are provided for each fixed height position, from the top end of the outer wall A concrete foundation is placed on the upper surface of the hardened material, which is filled with a hardener to a height excluding the depth required for the planting part, and retreated in the thickness direction by the width of the planting part. And the outer wall of the next upper stage is assembled with the steel sheet pile, and a grooved planting part is formed between the outer wall of the lower stage and the outer wall of the next upper stage, and is planted in the planting part. Filled with soil for planting,
Hereinafter, similarly, the civil engineering structure provided with the planting part, wherein a plurality of planting parts are provided in the vertical direction of the outer wall part, and planting is performed.

A civil engineering structure constructed by filling the inside of the outer wall with a hardening material such as concrete,
The outer wall of the civil engineering structure retreats in the thickness direction at every certain height position, and there is a planting part with a certain width there,
The outer wall is assembled by stacking a plurality of thinned timbers on a concrete foundation in a horizontal direction, and a plurality of anchor materials in a substantially horizontal posture are provided inside the outer wall for each fixed height position. A portion that is filled with a hardener from the top to a height excluding the depth required for the planting part and embeds the anchor material, and recedes in the thickness direction by the width of the planting part on the upper surface of the hardener A concrete foundation is provided on the outer wall of the next upper layer, and the thinned timber is stacked in a horizontal direction to form a grooved planting portion between the outer wall of the lower step and the outer wall of the next upper step. The planting part is filled with soil for planting,
Hereinafter, similarly, the civil engineering structure provided with the planting part, wherein a plurality of planting parts are provided in the vertical direction of the outer wall part, and planting is performed.

The hardening material to be filled inside the outer wall is filled with a quantity divided into one time or a plurality of times, with a height sufficient to embed at least one anchor material in a substantially horizontal posture, and curing is performed. The civil engineering structure provided with the planting part of Claim 1 or 2 characterized by being filled.

The civil engineering structure provided with the planting part according to any one of claims 1 to 3, wherein one end of the anchor material is attached to the bellows material and the other end is bent downward. .

The height of the upper edge portion of the outer wall is aligned in a straight line in the horizontal direction, and a levee material is attached on the upper edge portion, according to any one of claims 1 to 4. Civil engineering structure with planting part.

The civil engineering structure provided with the planting part according to any one of claims 1 to 5, wherein the hardener is a soil cement composed of locally generated soil, crushed stone, water, and cement.

It is a construction method for civil engineering structures in which the inside of the outer wall is filled with a hardening material such as concrete in stages,
The outer wall is assembled with a plurality of short steel sheet piles on a concrete foundation, and a plurality of anchor members in a substantially horizontal posture are attached in stages to each of the fixed height positions, and planted from the top end of the outer wall. Fill the hardened material step by step to the height excluding the depth required for the planting section, embed the anchor material, and place the concrete foundation on the upper surface of the hardened material at the site retreated in the thickness direction by the width dimension of the planting part On which the next upper outer wall is assembled with the steel sheet pile to form a grooved planting portion between the lower outer wall and the next upper outer wall, and planted in the planting portion Filling with earth and sand,
The lower part of the outer wall is arranged on the upper surface of the concrete foundation with a foundation beam that is a groove-shaped cross-section material that opens upward so that the lower end of the steel sheet pile can be inserted, and the foundation beam is fixed by an anchor fitting fixed to the upper surface of the concrete foundation. A relatively short column is raised with a desired slope by the anchor bracket and the diagonal support member coupled thereto, and a horizontal erection material is supported between the columns, and the foundation beam A steel sheet pile having a lower end inserted into the groove of the pallet is bonded to and supported by the bellows material,
Hereinafter, the same process is repeated, the outer wall is set back at a certain height position in the thickness direction, and a plurality of planting portions having a certain width are provided in the vertical direction of the outer wall portion, and planted. A construction method for civil engineering structures with planting parts.

The short steel sheet piles that make up the outer wall are joined to the first stage on the concrete foundation by joining the steel sheet piles processed in module length and approximately ½ module length in a staggered arrangement, and the upper edge seam Form a staggered staggered arrangement in which the ones that are short and tall in the left-right direction are staggered, and advance assembly by at least one step ahead of the top of the hardened material to be filled. The construction method of the civil engineering structure provided with the planting part of Claim 7 characterized by the above-mentioned.

It is a construction method for civil engineering structures in which the inside of the outer wall is filled with a hardening material such as concrete in stages,
The outer wall is constructed by stacking a plurality of thinned timbers on a concrete foundation in a horizontal direction, and by installing a plurality of anchor members in a substantially horizontal position at a certain height in stages, in a stepwise manner. Filled with the hardener stepwise from the edge to the height excluding the depth required for the planting part, embedded the anchor material, and the part of the upper surface of the hardener retreated in the thickness direction by the width dimension of the planting part A concrete foundation is provided on the outer wall of the next upper stage, and the thinned wood is stacked in a horizontal direction and assembled to form a grooved planting portion between the outer wall of the lower stage and the outer wall of the next upper stage, Filling the planting part with soil for planting,
The lower part of the outer wall fixes an anchor metal fitting to the upper surface of a concrete foundation, and stands a pillar such as H-shaped steel that supports the thinned wood with an inclined support material combined with the anchor metal fitting with a desired slope. Supporting a horizontal flank between the struts,
Hereinafter, the same process is repeated, the outer wall is set back at a certain height position in the thickness direction, and a plurality of planting portions having a certain width are provided in the vertical direction of the outer wall portion, and planted. A construction method for civil engineering structures with planting parts.