JP2004300755A - Construction method for grade separated crossing, grade separated crossing, construction method for bank, and bank - Google Patents

Construction method for grade separated crossing, grade separated crossing, construction method for bank, and bank Download PDF

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JP2004300755A
JP2004300755A JP2003094491A JP2003094491A JP2004300755A JP 2004300755 A JP2004300755 A JP 2004300755A JP 2003094491 A JP2003094491 A JP 2003094491A JP 2003094491 A JP2003094491 A JP 2003094491A JP 2004300755 A JP2004300755 A JP 2004300755A
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Japan
Prior art keywords
girder
embankment
constructed
span
permanent
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JP2003094491A
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Japanese (ja)
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JP4233025B2 (en
Inventor
Tadashi Yoshikawa
正 吉川
Takeshi Narahara
健 楢原
Tomoyuki Uo
朋之 宇尾
Kenichi Suzuki
健一 鈴木
Keita Masumoto
恵太 桝本
Nobuhide Sano
演秀 佐野
Moriyuki Shimai
森幸 嶋井
Yutaka Kotaki
裕 小滝
Shinji Muroi
進次 室井
Koichiro Ono
幸一郎 小野
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Kajima Corp
Nippon Steel Corp
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Kajima Corp
Nippon Steel Corp
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  • Bridges Or Land Bridges (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method for a grade separated crossing which can be constructed in a narrow permanently-installed working zone, the grade separated crossing, a construction method for a bank, and the bank. <P>SOLUTION: A bearing pile 5 and a footing 7 are installed in ground 11. Subsequently, a side-span main girder 25 is precedently assembled in the permanently-installed working zone 33, and jacked up by a hoisting and lowering device 27. After that, an overhanging section 41 is fixed for the formation of a side-span girder 13. While a center-span girder 15 is assembled on a side-span girder 13a, a bridge pier 17 and an abutment 19 are constructed on the footing 7 below the girder 13, and the girder 13 is erected by being jacked down on the bridge pier 17 and the abutment 19. Concurrently with the assembly and erection of the girder, T-shaped precast retaining walls 43 are installed in two rows in the planned position of the bank 23, so that a base section 71 can be formed and so that a backfill 61 can be installed. An L-shaped precast retaining wall 65 is installed to form a side section 73, and back-filling is performed by means of a backfill 67 so that the bank 23 can be constructed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、立体交差の構築方法、立体交差、盛土部の構築方法、盛土部に関するものである。
【0002】
【従来の技術】
従来、都市部における道路の平面交差は、交通渋滞の大きな原因となっている。そこで、交差部の通過交通と右折左折交通を立体化することにより、通過交通を減速あるいは停止させることなく通過させることが可能となる。従来、オーバーパスの立体交差を短期間で施工する方法がある(例えば、特許文献1参照)。
【0003】
【特許文献1】
特願2001−396946号
【0004】
【発明が解決しようとする課題】
しかしながら、構造物幅が8.5m以上の片側2車線の立体交差を構築する際には、9〜10m以上の幅の作業帯が必要となる。都市部の道路では昼間の通行制限は難しく、広い常設作業帯が確保できない場合、工法として成立しない。
【0005】
本発明は、このような問題に鑑みてなされたもので、その目的とするところは、狭い常設作業帯で施工可能な立体交差の構築方法、立体交差、盛土部の構築方法、盛土部を提供することにある。
【0006】
【課題を解決するための手段】
前述した目的を達成するための第1の発明は、作業領域で主桁を組み立て、前記主桁に昇降装置を設置する工程(a)と、前記昇降装置を用いて前記主桁を上昇させる工程(b)と、前記作業領域を拡大し、前記主桁に張出部を取り付ける工程(c)とを具備することを特徴とする立体交差の構築方法である。
【0007】
工程(a)で使用する作業領域は、幅5〜6m程度とする。主桁は、例えば、箱桁等である。張出部は、主桁の側部から橋軸直角方向に張り出して設けられる。昇降装置は、支持杭、支持杭に支持された脚部、脚部に取り付けられた駆動装置とからなる。駆動装置は、主桁を保持しつつ、脚部に沿って昇降可能である。工程(b)で、主桁は、下方を自動車が通行可能な高さまでジャッキアップされる。
【0008】
工程(a)の前には、昇降装置の支持杭を兼ねた基礎が構築される。そして、工程(c)と並行して、基礎上に橋脚が構築される。工程(c)の後、桁は、昇降装置を用いてジャッキダウンされ、橋脚上に設置される。
【0009】
工程(c)の後、桁をジャッキダウンする前に、必要に応じて、桁の上で他の桁を組み立てる。その場合、上載された他の桁は、下の桁を橋脚上に設置した後、押出しあるいは引出し架設される。
【0010】
第1の発明では、まず、作業領域で主桁を組み立て、主桁に昇降装置を設置する。そして、昇降装置を用いて主桁を上昇させた後、作業領域を拡大し、主桁に張出部を取り付ける。
【0011】
第2の発明は、第1の発明の立体交差の構築方法を用いて構築された立体交差である。
【0012】
第3の発明は、2列の先行する側部および底版部を形成する工程(a)と、前記先行する側部の間に第1の埋め戻し材を充填する工程(b)と、前記底版部の片側の縁に第1の本設側部を形成する工程(c)と、前記先行する側部と前記第1の本設側部の間に第2の埋め戻し材を充填する工程(d)と、前記底版部のもう一方の縁に第2の本設側部を形成する工程(e)と、前記先行する側部と前記第2の本設側部の間に第3の埋め戻し材を充填する工程(f)とを具備することを特徴とする盛土部の構築方法である。
【0013】
盛土部を構築するための施工ヤードが狭い場合には、工程(c)および工程(d)によって盛土部上に少なくとも2車線を確保した後、工程(e)および工程(f)を行う。施工ヤードが十分な場合には、工程(c)から工程(d)と、工程(e)から工程(f)を並行して行ってもよい。
【0014】
2列の先行する側部は、橋軸直角方向の断面が逆T字型またはL字型のプレキャスト部材を2列に並べて形成される。または、矢板を2列に並べて形成してもよい。底版部は、プレキャスト部材や矢板を設置した後、現場打ちコンクリートを打設して形成される。
【0015】
第1の本設側部および第2の本設側部は、橋軸直角方向の断面がL字型のプレキャスト部材を、底版部上に配置して形成される。
【0016】
第1の埋め戻し材、前記第2の埋め戻し材、前記第3の埋め戻し材は、軽量骨材、軽量材とジオテキスタイル、発泡プラスチック等である。埋め戻し材は、人力で設置できるような軽量のものとするのが望ましい。
【0017】
第3の発明では、まず、先行する側部および底版部を形成し、先行する側部の間に埋め戻し材を充填する。そして、先行する側部の外側に本設側部を形成し、先行する側部と本設側部の間にも埋め戻し材を充填する。本設側部は、施工場所の条件に応じて、片側ずつ形成してもよいし、両側を並行して形成してもよい。
【0018】
第4の発明は、第3の発明の盛土部の構築方法を用いて構築された盛土部である。
【0019】
【発明の実施の形態】
以下、図面に基づいて、本発明の実施例を詳細に説明する。図1は、道路橋1の平面図、図2は、道路橋1の立面図を示す。図1に示すように、道路橋1は、基礎である支持杭5、フーチング7、側径間桁13、中央径間桁15、橋脚17、橋台19、盛土部23等からなる。
【0020】
図3は、道路橋1の構築方法を示すフローチャート、図4は、側径間主桁25を組み立てた状態の平面図、図5は側径間主桁25をジャッキアップする前の状態の立面図を示す。以下に、図3のフローチャートを用いて、道路3(図1)上に道路橋1を構築する方法について説明する。
【0021】
図4に示す道路橋1の計画位置37に道路橋1を構築するには、まず、道路3上に確保された夜間作業帯35を使用して、ジャッキ支持杭兼用基礎である支持杭5、フーチング7を構築する(ステップ101)。支持杭5およびフーチング7は、ジャッキである昇降装置27(図5)の支持杭と、橋脚17や橋台19の基礎を兼ねるものである。支持杭5は、地盤11の支持層9まで根入れされる。計画された道路橋1が片側2車線の場合、常設作業帯33の幅は5〜6m程度、夜間作業帯35の幅は12m程度とする。
【0022】
次に、昇降装置27及び側径間主桁25を設置する(ステップ102)。側径間主桁25は、側径間桁13(図1)の主桁であり、箱桁等とする。側径間主桁25は、架台(図示せず)等の上で組み立てられる。
【0023】
昇降装置27は、側径間主桁15のコーナー部に設置された脚29、脚に取り付けられた駆動装置31からなる。脚29は、側径間主桁25の組み立てと並行して、フーチング7上に設置される。側径間主桁25は、駆動装置31を介して脚29に取り付けられる。
【0024】
昇降装置27の設置や、側径間主桁25の組み立ては、夜間作業帯35を使用して行われる。昼間には、常設作業帯33内で、側径間主桁の溶接や塗装等が行われる。
【0025】
ステップ102の後、常設作業帯33を使用して、側径間主桁25をジャッキアップする(ステップ103)。駆動装置31は、側径間主桁25を保持しつつ、脚29に沿って昇降可能である。ステップ103では、昇降装置27を用いて、図5の矢印Aに示すように、側径間主桁25を上昇させる。側径間主桁25は、張出部41(図7)を設置した後、その下方で自動車の通行が可能な程度までジャッキアップされる。
【0026】
図6は、側径間主桁25に張出部41を設置した状態での平面図、図7は、側径間主桁25の片側に張出部41を設置した状態での断面図、図8は、側径間主桁25の両側に張出部41を設置した状態での断面図を示す。図7、図8は、図6のB−BまたはC−Cに示す位置での断面図である。
【0027】
側径間主桁25をジャッキアップした後、側径間主桁25に張出部41を取り付ける(ステップ105)。張出部41は、夜間に作業帯を利用して、片方ずつ取り付ける。図7に示すように、側径間主桁25の左車線側に張出部41を固定する際には、夜間には常設作業帯33を左車線側に拡幅した夜間作業帯39a(図6)を使用し、側径間主桁25a、側径間主桁25bの左車線側の側部にそれぞれ張出部41a、張出部41bを取り付ける。昼間には常設作業帯33(図6)を使用し、下方の通行に支障のないボルトの本締め、溶接、塗装などの作業を行う。
【0028】
同様に、図8に示すように、側径間主桁25の右車線側に張出部41を固定する際には、夜間には常設作業帯33を右車線側に拡幅した夜間作業帯39bを使用し、側径間主桁25a、側径間主桁25bの右車線側の側部にそれぞれ張出部41a、張出部41bを取り付ける。昼間には常設作業帯33(図6)を使用し、下方の通行に支障のないボルトの本締め、溶接、塗装などの作業を行う。
【0029】
図9は、中央径間桁15を組み立てた状態での平面図、図10は、中央径間桁15、盛土部43、橋脚17および橋台19を組み立てる工程での立面図、図11は、中央径間桁15を組み立てた状態での断面図を示す。図11は、図10のF−Fによる断面図である。
【0030】
図6、図8に示すように、側径間主桁25の両側に張出部41を固定して側径間桁13を完成させた後、側径間桁13a上に中央径間桁15を設置する(ステップ106)。中央径間桁15を組み立てる際には、夜間に、夜間作業帯35(図4)を使用して、側径間桁13a上に軌条設備49、台車51を設置し、その上に中央径間桁15を設置する。昼間には、常設作業帯33(図4)を使用して、溶接や塗装等の作業を行う。
【0031】
中央径間桁15は、中央径間主桁47と張出部53からなる。中央径間桁15の中央径間主桁47と張出部53は、側径間桁13と同様の分割施工、あるいは同時施工のどちらで組み立ててもよい。
【0032】
ステップ106と並行して、側径間桁13の下方で、ステップ101で未施工の残りの杭5およびフーチング7を構築し、続いて、フーチング7上に橋脚17、橋脚19を構築する(ステップ104)。図10、図11に示すように、中央径間桁13の構築と並行して、側径間桁13aの下方では、フーチング7a上に橋台19aを、フーチング7b上に橋脚17aを構築する。また、側径間桁13bの下方では、フーチング7c上に橋脚17bを、フーチング7d上に橋台19bを構築する。ステップ104は、夜間、昼間を通して行われる。
【0033】
図12は、橋脚17および橋台19上に側径間桁13を架設した状態での立面図を、図13は、橋脚17上に側径間桁13を架設した状態での断面図を示す。図13は、図12のL−Lによる断面図である。
【0034】
ステップ104、ステップ106の後、側径間桁13を橋脚17、橋台19上にジャッキダウンする(ステップ107)。図10に示すように、中央径間桁15の組み立て、橋脚17と橋台19の構築を終えた後、昇降装置27を用いて、中央径間桁15を載せた側径間桁13aを矢印Gに示す方向に下降させ、図12に示すように、橋脚17a、橋台19a上に架設する。同様に、側径間桁13bを矢印Gに示す方向に下降させ、橋脚17b、橋台19b上に架設する。
【0035】
次に、図12の矢印Mに示すように、橋脚17上に中央径間桁15を押出し(または引出し)架設する(ステップ108)。中央径間桁15は、軌条設備49、台車51、多輪台車63等を用いて、図1に示すように、橋脚17aと橋脚17bの間に架設される。なお、昇降装置27は、側径間桁13の架設後、適宜撤去される。ステップ107、ステップ108を行うときには、30時間程度の集中工事期間113(図3)を設け、昼間に夜間作業帯35(図4)と同じくらいの作業帯を確保する。
【0036】
ステップ105からステップ106と並行して、盛土部23のT型プレキャスト擁壁43を設置し(ステップ109)、底版部71の片側の縁に沿ってL型プレキャスト擁壁65を設置する(ステップ110)。
【0037】
図14は、盛土部23の底版部71を構築した状態での断面図、図15は、底版部71の片側の縁に沿ってL型プレキャスト擁壁65を設置した状態での断面図である。図14は、図9のD−DまたはE−Eに示す位置での断面図、図15は、図10のH−HまたはI−Iに示す位置での断面図である。
【0038】
ステップ109、ステップ110は、例えば、ステップ106と並行して行われる。ステップ109では、まず、図14に示すように、道路3の舗装を撤去して地盤11を掘削し、表層改良部21を設ける。そして、表層改良部21上に、断面が逆T字型のプレキャスト部材であるT型プレキャスト擁壁43を2列に並べて配置し、隣り合うT型プレキャスト擁壁43の水平部材42の間に現場打ちコンクリート59を打設して、底版部71を形成する。
【0039】
そして、2列のT型プレキャスト擁壁43の垂直部材44の間に埋め戻し材61を充填し、埋め戻し材61の上に路盤55を設置する。2列のT型プレキャスト擁壁43の垂直部材44は、(先行する)側部として機能する。T型プレキャスト擁壁43の垂直部材44同士の距離は、常設作業帯33の中で施工可能なように、常設作業帯33(図1)の幅より狭いものとする。
【0040】
埋め戻し材61には、例えば、軽量骨材、軽量材とジオテキスタイル等を用いる。または、発泡スチロールを用いたEPS工法により埋め戻しを行ってもよい。
【0041】
ステップ109では、夜間に夜間作業帯39a、夜間作業帯39b(図6)を使用してT型プレキャスト擁壁43の設置を行う。埋め戻し材61の充填等は、常設作業帯33の外側に覆工盤57を設置した状態で、昼間に常設作業帯33を使用して行うのが好ましい。図14に示すように底版71を構築した後、昼間は、T型プレキャスト擁壁43の両側に、それぞれ2車線が確保される。
【0042】
ステップ110では、まず、図15に示すように、底版部71の片側の縁、すなわち2列に設置されたT型プレキャスト擁壁43のうちの一方の水平部材42の上にL型プレキャスト擁壁65を設置する。そして、T型プレキャスト擁壁43とL型プレキャスト擁壁65との間の空間に埋め戻し材67を充填し、その上に路盤55を設置して、舗装工69を行う。
【0043】
ステップ110により、盛土部23の片側では、T型プレキャスト部材43の垂直部材44である先行する側部の外側に、本設の側部73が形成される。ステップ110の後、盛土部23の両側にはそれぞれ1車線ずつが、盛土部23の上部には2車線が確保される。
【0044】
ステップ110の後、底版部71のもう一方の縁に沿ってL型プレキャスト擁壁65を設置し(ステップ111)、盛土部23の埋戻しを行う(ステップ112)。
ステップ111、ステップ112は、例えば、ステップ107、ステップ108と並行して、集中工事期間114中に行われる。
【0045】
図16は、盛土部23の断面図を示す。図16は、図12のJ−JまたはK−Kに示す位置での断面図である。集中工事期間114には、夜間作業帯35(図4)と同等の幅の作業帯が使用できる。この作業帯を使用して、図16に示すように、底版部71のもう一方の縁、すなわちステップ110でL型プレキャスト擁壁65を設置しなかったT型プレキャスト擁壁43の水平部材42の上にもL型プレキャスト擁壁65を設置する。
【0046】
ステップ112では、T型プレキャスト擁壁43とステップ111で設置したL型プレキャスト擁壁65との間の空間に埋め戻し材67を充填し、その上に路盤55を設置する。なお、埋め戻し材67として用いる材料や埋め戻し材67の設置方法は、埋め戻し材61と同様である。ステップ111、ステップ112により、盛土部23の両側に、本設の側部73が形成される。
【0047】
ステップ110、ステップ111で、L型プレキャスト擁壁65の転倒を防止するには、先行して設置したT型プレキャスト擁壁43の水平部材42とL型プレキャスト擁壁65の水平部材64をボルト(図示せず)等で接合する。または、T型プレキャスト擁壁43の垂直部材44とL型プレキャスト擁壁65の垂直部材66をセパレート、タイロッドで連結する。
【0048】
ステップ105からステップ108までと、ステップ109からステップ112までの工程がそれぞれ終了した後、集中工事期間114を利用して仕上げ工を行う(ステップ113)。ステップ113では、夜間作業帯35(図4)を使用して、盛土部23の舗装工69等を含む、道路橋1の仕上げ工を行い、図1、図2に示す道路橋1を完成する。
【0049】
このように、本実施の形態では、側径間桁13を側径間主桁25と張出部41とに分割し、張出部41を夜間に設置するので、張出部41の設置後にその下を通行可能にでき、常設作業帯33が通常より狭い場合にも橋桁を構築できる。また、側径間桁13の完成後は、その上を中央径間桁15の作業ヤードとして使用することができる。側径間主桁25のジャッキアップ後や、側径間桁13の完成後には、これらの下を作業ヤードとして橋脚17や橋台19を構築できる。
【0050】
盛土部23では、T型プレキャスト擁壁43を用いて先行する側部を形成し、L型プレキャスト擁壁65を用いて本設の側部73を片側ずつ形成することで、施工ヤードが狭い場合にも、先行する側部(垂直部材44)の両側や構築されつつある盛土部23の上部に、必要な本数の車線を確保することができる。
【0051】
また、T型プレキャスト擁壁43を用い、T型プレキャスト擁壁43の水平部材42を精度良く設置して底版部71を形成することで、両外側のL型プレキャスト部材65を短時間で設置できる。
【0052】
さらに、軽量骨材、軽量材とジオテキスタイル、発泡スチロール等の軽量の埋め戻し材61、埋め戻し材67を用いることで、軟弱地盤でも、表層改良部21の施工を簡略化できる。さらに、人出による急速施工が可能で、機械の故障などのリスクを軽減できる。廃材利用の軽量骨材を使用すれば、環境負荷の軽減も可能となる。
【0053】
本実施の形態では、側径間桁13の分割施工方法と、先行する側部を構築する盛土部23の施工方法を組み合わせることにより、短期間で片側2車線の道路橋1を構築できる。
【0054】
なお、本実施の形態では、道路橋を例として説明したが、同様の方法で道路橋以外の立体交差も構築できる。側径間桁以外の桁を分割施工する場合もある。また、図3では、ステップ105からステップ108と並行して盛土部23の構築を行ったが、盛土部23の構築時期はこれに限らず、必要な作業帯と時間が確保できるときに構築すればよい。
【0055】
さらに、図3では、盛土部23を、ステップ110、ステップ111に示すように、本設の側部を形成するためのL型プレキャスト擁壁65を片側ずつ2段階施工で設置したが、施工ヤードの広さ、資材の運搬・仮置き状況によって、ステップ110とステップ111を並行して行い、両側のL型プレキャスト擁壁65を1段階施工で同時に設置してもよい。
【0056】
本実施の形態では、桁の分割施工方法と、先行する側部を構築する盛土部の施工方法を組み合わせたが、それぞれ単独で用いてもよい。例えば、桁の分割施工と、他の盛土部の施工方法を組み合わせる場合もある。また、他の桁の施工方法と、先行する側部を構築する盛土部の施工方法を組み合わせる場合もある。
【0057】
盛土部23では、T型プレキャスト擁壁43を用いて先行する側部を構築したが、他の部材を用いて先行する側部を構築してもよい。図17、図18は、他の部材を用いて先行する側部を構築した盛土部の断面図を示す。
【0058】
図17に示す盛土部では、先行する側部を形成する際に、盛土部23のT型プレキャスト擁壁43の代わりに、L型プレキャスト擁壁83が用いられる。2列に並べられたL型プレキャスト擁壁83の間と外側には、場所打ちコンクリート59が打設され、底版部81が形成される。L型プレキャスト部材65は、底版部81の場所打ちコンクリート59上に設置される。
【0059】
図18に示す盛土部では、先行する側部を形成する際に、盛土部23のT型プレキャスト擁壁43の代わりに、矢板87が用いられる。2列に設置された矢板87の間と外側には、場所打ちコンクリート59が打設され、底版部85が形成される。L型プレキャスト部材65は、底版部85の場所打ちコンクリート59上に設置される。
【0060】
図17、図18に示すように、L型プレキャスト擁壁83や矢板87を用いて先行する側部を形成することにより、盛土部23と同様に、施工ヤードが狭い場合にも、先行する側部の両側や構築されつつある盛土部の上部に、必要な本数の車線を確保することができる。また、軽量骨材、軽量材とジオテキスタイル、発泡スチロール等の軽量の埋め戻し材61、埋め戻し材67や、L型プレキャスト部材65を用いることで、短期間で盛土部を構築できる。
【0061】
【発明の効果】
以上、詳細に説明したように、本発明によれば、狭い常設作業帯で施工可能な立体交差の構築方法、立体交差、盛土部の構築方法、盛土部を提供できる。
【図面の簡単な説明】
【図1】道路橋1の平面図
【図2】道路橋1の立面図
【図3】道路橋1の構築方法を示すフローチャート
【図4】側径間主桁25を組み立てた状態の平面図
【図5】側径間主桁25をジャッキアップする前の状態の立面図
【図6】ジャッキアップ後の側径間主桁25に張出部41を設置した状態での平面図
【図7】ジャッキアップ後の側径間主桁25の片側に張出部41を設置した状態での断面図
【図8】ジャッキアップ後の側径間主桁25の両側に張出部41を設置した状態での断面図
【図9】側径間桁13aの上で中央径間桁15を組み立てた状態の平面図
【図10】側径間桁13aの上で中央径間桁15、盛土部43、橋脚17および橋台19を組み立てる工程での立面図
【図11】中央径間桁15を組み立てた状態での断面図
【図12】側径間桁13a、側径間桁13bをジャッキダウンし、橋脚17および橋台19上に側径間桁13を架設した状態での立面図
【図13】橋脚17上に側径間桁13を架設した状態での断面図
【図14】盛土部23の底版部を構築した状態での断面図
【図15】底版部71の片側の縁に沿ってL型プレキャスト擁壁65を設置した状態での断面図
【図16】盛土部23の断面図
【図17】他の部材を用いて先行する側部を構築した盛土部の断面図
【図18】他の部材を用いて先行する側部を構築した盛土部の断面図
【符号の説明】
1………道路橋
5………支持杭
7………フーチング
9………支持層
11………地盤
13、13a、13b………側径間桁
15………中央径間桁
17、17a、17b………橋脚
19、19a、19b………橋台
23、23a、23b………盛土部
25、25a、25b………側径間主桁
27………昇降装置
41、41a、41b、53………張出部
42、64………水平部材
43、43a、43b、83………T型プレキャスト擁壁
44、66………垂直部材
47………中央径間主桁
59………場所打ちコンクリート
61、67………埋め戻し材
65………L型プレキャスト部材
71、81、85………底版部
73………側部
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method for constructing a grade separation, a grade separation, a method for constructing a bank, and a bank.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, road intersections in urban areas have been a major cause of traffic congestion. Therefore, by making the passing traffic at the intersection and the right-turning left-turning traffic three-dimensional, the passing traffic can be passed without being decelerated or stopped. Conventionally, there is a method of constructing an overpass overpass in a short period of time (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Application No. 2001-396946
[Problems to be solved by the invention]
However, when constructing a two-lane crossover with a structure width of 8.5 m or more, a work zone having a width of 9 to 10 m or more is required. It is difficult to restrict daytime traffic on urban roads, and if a wide permanent work zone cannot be secured, this method will not be established.
[0005]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a method of constructing an overpass, a method of constructing an overpass, an embankment portion, and an embankment portion that can be constructed in a narrow permanent work zone. Is to do.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, a main girder is assembled in a work area, and a lifting device is installed on the main girder, and the main girder is raised using the lifting device. (B) and a step (c) of enlarging the work area and attaching an overhang to the main girder.
[0007]
The work area used in the step (a) has a width of about 5 to 6 m. The main girder is, for example, a box girder. The overhang portion is provided so as to overhang from the side of the main girder in a direction perpendicular to the bridge axis. The lifting device includes a support pile, a leg supported by the support pile, and a drive device attached to the leg. The driving device can move up and down along the legs while holding the main girder. In step (b), the main girder is jacked up to a height below which vehicles can pass.
[0008]
Before the step (a), a foundation that also serves as a support pile of the lifting device is constructed. Then, in parallel with the step (c), a pier is constructed on the foundation. After step (c), the girders are jacked down using a lifting device and placed on a pier.
[0009]
After step (c), as needed, assemble other girders on the girders before jacking down the girders. In this case, the other girders are extruded or drawn out after the lower girders are installed on the piers.
[0010]
In the first invention, first, a main girder is assembled in a work area, and an elevating device is installed on the main girder. Then, after raising the main girder using the elevating device, the work area is enlarged, and an overhang is attached to the main girder.
[0011]
A second invention is a three-dimensional intersection constructed using the method of constructing a three-dimensional intersection of the first invention.
[0012]
According to a third aspect of the present invention, there is provided a step (a) of forming two rows of preceding side portions and a bottom plate portion, a step (b) of filling a first backfill material between the preceding side portions, and (C) forming a first permanent side at one edge of the part, and filling a second backfill between the preceding side and the first permanent side ( d), forming a second permanent side at the other edge of the bottom slab, and (e) forming a third filling between the preceding side and the second permanent side. And a step (f) of filling a return material.
[0013]
When the construction yard for constructing the embankment is narrow, at least two lanes are secured on the embankment by the steps (c) and (d), and then the steps (e) and (f) are performed. If the construction yard is sufficient, steps (c) to (d) and steps (e) to (f) may be performed in parallel.
[0014]
The two rows of leading sides are formed by arranging two rows of precast members having an inverted T-shaped or L-shaped cross section in the direction perpendicular to the bridge axis. Alternatively, the sheet piles may be formed in two rows. The bottom plate portion is formed by placing a precast member or a sheet pile and then pouring cast-in-place concrete.
[0015]
The first permanent side portion and the second permanent side portion are formed by disposing a precast member having an L-shaped cross section in a direction perpendicular to the bridge axis on the bottom plate portion.
[0016]
The first backfill material, the second backfill material, and the third backfill material are lightweight aggregates, lightweight materials and geotextiles, foamed plastics, and the like. It is desirable that the backfill material be lightweight so that it can be installed manually.
[0017]
In the third invention, first, a preceding side portion and a bottom plate portion are formed, and a backfill material is filled between the preceding side portions. Then, a permanent side portion is formed outside the preceding side portion, and the space between the preceding side portion and the permanent side portion is filled with the backfill material. The permanent side portion may be formed one by one or may be formed on both sides in parallel according to the conditions of the construction place.
[0018]
A fourth invention is an embankment constructed using the embankment construction method of the third invention.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of the road bridge 1, and FIG. 2 is an elevation view of the road bridge 1. As shown in FIG. 1, the road bridge 1 includes a support pile 5, a footing 7, a side span girder 13, a center span girder 15, a pier 17, an abutment 19, an embankment 23, and the like, which are foundations.
[0020]
FIG. 3 is a flowchart showing a method of constructing the road bridge 1, FIG. 4 is a plan view showing a state where the main span girder 25 is assembled, and FIG. 5 is a standing view before jacking up the main span girder 25. FIG. Hereinafter, a method of constructing the road bridge 1 on the road 3 (FIG. 1) will be described with reference to the flowchart of FIG.
[0021]
In order to construct the road bridge 1 at the planned position 37 of the road bridge 1 shown in FIG. 4, first, using the night work zone 35 secured on the road 3, the support pile 5 serving as the jack support pile and The footing 7 is constructed (step 101). The support pile 5 and the footing 7 serve as a support pile of the lifting device 27 (FIG. 5), which is a jack, and also serve as a foundation of the pier 17 and the abutment 19. The support pile 5 is embedded into the support layer 9 of the ground 11. When the planned road bridge 1 has two lanes on each side, the width of the permanent work zone 33 is about 5 to 6 m, and the width of the night work zone 35 is about 12 m.
[0022]
Next, the lifting device 27 and the side span main girder 25 are installed (step 102). The side span main girder 25 is the main girder of the side span girder 13 (FIG. 1), and is a box girder or the like. The side span main girder 25 is assembled on a gantry (not shown) or the like.
[0023]
The elevating device 27 includes a leg 29 installed at a corner of the side span main girder 15 and a driving device 31 attached to the leg. The legs 29 are installed on the footing 7 in parallel with the assembly of the main span 25. The side span main girder 25 is attached to the leg 29 via a drive device 31.
[0024]
The installation of the elevating device 27 and the assembling of the side span main girder 25 are performed using the nighttime work zone 35. In the daytime, welding, painting, and the like of the side span main girder are performed in the permanent work zone 33.
[0025]
After step 102, the side span main girder 25 is jacked up using the permanent work belt 33 (step 103). The driving device 31 can move up and down along the legs 29 while holding the side span main girder 25. In step 103, the side span main girder 25 is raised by using the lifting / lowering device 27 as shown by the arrow A in FIG. 5. After the side span main girder 25 is provided with the overhang portion 41 (FIG. 7), the main span girder 25 is jacked up to the extent that a vehicle can pass below the overhang portion 41 (FIG. 7).
[0026]
FIG. 6 is a plan view in a state where the overhang 41 is installed on the side span main girder 25, FIG. 7 is a cross-sectional view in a state where the overhang 41 is installed on one side of the side span main girder 25, FIG. 8 is a cross-sectional view in a state where the projecting portions 41 are installed on both sides of the side span main girder 25. 7 and 8 are cross-sectional views at the positions indicated by BB or CC in FIG.
[0027]
After jacking up the side span main girder 25, the overhang portion 41 is attached to the side span main girder 25 (step 105). The overhang portion 41 is attached one by one using a work belt at night. As shown in FIG. 7, when the overhanging portion 41 is fixed to the left lane side of the side span main girder 25, the nighttime working band 39 a (FIG. ), The overhang portions 41a and 41b are attached to the left-lane side of the side span main girder 25a and the side span main girder 25b, respectively. In the daytime, the permanent work belt 33 (FIG. 6) is used to perform work such as final tightening of bolts, welding, and painting that do not hinder the traffic below.
[0028]
Similarly, as shown in FIG. 8, when the overhanging portion 41 is fixed to the right lane side of the side span main girder 25, the nighttime working zone 39 b in which the permanent working zone 33 is widened to the right lane side at night. The overhanging portions 41a and 41b are attached to the right lane side of the side span main girder 25a and side span main girder 25b, respectively. In the daytime, the permanent work belt 33 (FIG. 6) is used to perform work such as final tightening of bolts, welding, and painting that do not hinder the traffic below.
[0029]
9 is a plan view in a state where the center span girder 15 is assembled, FIG. 10 is an elevation view in a process of assembling the center span girder 15, the embankment 43, the pier 17 and the abutment 19, and FIG. The sectional view in the state where the center span girder 15 was assembled is shown. FIG. 11 is a sectional view taken along line FF of FIG.
[0030]
As shown in FIGS. 6 and 8, after the projecting portions 41 are fixed on both sides of the side span main girder 25 to complete the side span girder 13, the center span girder 15 is placed on the side span girder 13 a. Is installed (step 106). At the time of assembling the center span girder 15, at night, using the night work zone 35 (FIG. 4), the rail equipment 49 and the bogie 51 are installed on the side span girder 13a, and the center span girder is placed thereon. The girder 15 is installed. In the daytime, work such as welding and painting is performed using the permanent work zone 33 (FIG. 4).
[0031]
The center span girder 15 includes a center span main girder 47 and an overhang 53. The center span main girder 47 and the overhang portion 53 of the center span girder 15 may be assembled by either the same split construction as the side span girder 13 or simultaneous construction.
[0032]
In parallel with step 106, below the side span girder 13, the remaining unconstructed pile 5 and footing 7 are constructed in step 101, and subsequently, the pier 17 and the pier 19 are constructed on the footing 7 (step 104). As shown in FIGS. 10 and 11, in parallel with the construction of the center span girder 13, below the side span girder 13a, the abutment 19a is constructed on the footing 7a and the pier 17a is constructed on the footing 7b. Below the side span girder 13b, the pier 17b is constructed on the footing 7c, and the abutment 19b is constructed on the footing 7d. Step 104 is performed at night and throughout the day.
[0033]
FIG. 12 is an elevation view in a state where the side span girder 13 is erected on the pier 17 and the abutment 19, and FIG. 13 is a cross-sectional view in a state where the side span girder 13 is erected on the pier 17. . FIG. 13 is a sectional view taken along line LL of FIG.
[0034]
After step 104 and step 106, the side span girder 13 is jacked down on the pier 17 and the abutment 19 (step 107). As shown in FIG. 10, after the assembly of the center span girder 15 and the construction of the pier 17 and the abutment 19 are completed, the side span girder 13a on which the center span girder 15 is mounted is moved by the arrow G using the elevating device 27. Then, as shown in FIG. 12, it is erected on the pier 17a and the abutment 19a. Similarly, the side span girder 13b is lowered in the direction shown by the arrow G, and is erected on the pier 17b and the abutment 19b.
[0035]
Next, as shown by an arrow M in FIG. 12, the center span girder 15 is extruded (or drawn) on the pier 17 (step 108). The center span girder 15 is installed between the pier 17a and the pier 17b using the rail equipment 49, the bogie 51, the multi-wheel bogie 63, and the like, as shown in FIG. The elevating device 27 is appropriately removed after the span girder 13 is erected. When performing Steps 107 and 108, an intensive construction period 113 (FIG. 3) of about 30 hours is provided, and a work zone equivalent to the night work zone 35 (FIG. 4) is secured in the daytime.
[0036]
In parallel with steps 105 to 106, the T-type precast retaining wall 43 of the embankment 23 is installed (step 109), and the L-type precast retaining wall 65 is installed along one edge of the bottom slab 71 (step 110). ).
[0037]
FIG. 14 is a cross-sectional view in a state where the bottom slab 71 of the embankment part 23 is constructed, and FIG. 15 is a cross-sectional view in a state where an L-shaped precast retaining wall 65 is installed along one edge of the bottom slab 71. . FIG. 14 is a cross-sectional view at the position shown by DD or EE in FIG. 9, and FIG. 15 is a cross-sectional view at the position shown by HH or II in FIG.
[0038]
Steps 109 and 110 are performed in parallel with step 106, for example. In step 109, first, as shown in FIG. 14, the pavement of the road 3 is removed, the ground 11 is excavated, and the surface layer improving unit 21 is provided. A T-shaped precast retaining wall 43, which is a precast member having an inverted T-shaped cross section, is arranged in two rows on the surface layer improving portion 21, and a site between adjacent horizontal members 42 of the T-shaped precast retaining wall 43. Pour concrete 59 is cast to form bottom slab 71.
[0039]
Then, the backfill material 61 is filled between the vertical members 44 of the two rows of the T-type precast retaining walls 43, and the roadbed 55 is set on the backfill material 61. The vertical members 44 of the two rows of T-shaped precast retaining walls 43 function as (preceding) sides. The distance between the vertical members 44 of the T-type precast retaining wall 43 is smaller than the width of the permanent work zone 33 (FIG. 1) so that the vertical members 44 can be installed in the permanent work zone 33.
[0040]
As the backfill material 61, for example, a lightweight aggregate, a lightweight material and geotextile, or the like is used. Alternatively, backfilling may be performed by an EPS method using styrene foam.
[0041]
In step 109, the T-type precast retaining wall 43 is installed at night using the night work zone 39a and the night work zone 39b (FIG. 6). The filling of the backfill material 61 and the like is preferably performed using the permanent work band 33 in the daytime with the lining board 57 installed outside the permanent work band 33. After the bottom slab 71 is constructed as shown in FIG. 14, two lanes are secured on both sides of the T-type precast retaining wall 43 in the daytime.
[0042]
In step 110, first, as shown in FIG. 15, the L-shaped precast retaining wall is placed on one edge of the bottom slab 71, that is, on one of the horizontal members 42 of the T-shaped precast retaining walls 43 installed in two rows. 65 is installed. Then, the space between the T-type precast retaining wall 43 and the L-type precast retaining wall 65 is filled with the backfill material 67, and the roadbed 55 is installed thereon, and the pavement 69 is performed.
[0043]
According to step 110, on one side of the embankment 23, a permanent side 73 is formed outside the preceding side that is the vertical member 44 of the T-shaped precast member 43. After step 110, one lane is secured on each side of the embankment 23, and two lanes are secured above the embankment 23.
[0044]
After step 110, the L-shaped precast retaining wall 65 is installed along the other edge of the bottom slab 71 (step 111), and the embankment 23 is backfilled (step 112).
Steps 111 and 112 are performed during the intensive construction period 114, for example, in parallel with steps 107 and 108.
[0045]
FIG. 16 shows a sectional view of the embankment 23. FIG. 16 is a cross-sectional view at a position indicated by JJ or KK in FIG. During the intensive work period 114, a work zone having the same width as the night work zone 35 (FIG. 4) can be used. Using this working band, as shown in FIG. 16, the other edge of the bottom plate 71, that is, the horizontal member 42 of the T-type precast retaining wall 43 where the L-type precast retaining wall 65 was not installed in step 110. An L-shaped precast retaining wall 65 is also installed on the upper side.
[0046]
In step 112, the space between the T-type precast retaining wall 43 and the L-type precast retaining wall 65 set in step 111 is filled with the backfill material 67, and the roadbed 55 is placed thereon. The material used as the backfill material 67 and the method of installing the backfill material 67 are the same as those of the backfill material 61. By the steps 111 and 112, the permanent side portions 73 are formed on both sides of the embankment portion 23.
[0047]
In steps 110 and 111, the horizontal member 42 of the T-type precast retaining wall 43 and the horizontal member 64 of the L-type precast retaining wall 65 are bolted ( (Not shown). Alternatively, the vertical member 44 of the T-type precast retaining wall 43 and the vertical member 66 of the L-type precast retaining wall 65 are connected by a separate tie rod.
[0048]
After the processes from step 105 to step 108 and from step 109 to step 112 are completed, finishing work is performed using the concentrated construction period 114 (step 113). In step 113, using the night work zone 35 (FIG. 4), the road bridge 1 including the pavement 69 of the embankment 23 is finished to complete the road bridge 1 shown in FIGS. .
[0049]
As described above, in the present embodiment, the side span girder 13 is divided into the side span main girder 25 and the overhang portion 41, and the overhang portion 41 is installed at night. A bridge girder can be constructed even when the permanent work zone 33 is narrower than usual. After the completion of the side span girder 13, it can be used as a work yard for the center span girder 15. After jack-up of the main span girder 25 or completion of the side span girder 13, the pier 17 and the abutment 19 can be constructed under these working yards.
[0050]
In the embankment portion 23, the leading side portion is formed by using the T-type precast retaining wall 43, and the main side portion 73 is formed one by one using the L-type precast retaining wall 65, so that the construction yard is narrow. In addition, the required number of lanes can be secured on both sides of the preceding side portion (vertical member 44) and on the top of the embankment portion 23 being constructed.
[0051]
Further, by using the T-type precast retaining wall 43 and accurately setting the horizontal member 42 of the T-type precast retaining wall 43 to form the bottom slab 71, the L-type precast members 65 on both outer sides can be installed in a short time. .
[0052]
Further, by using the lightweight backfill material 61 and the backfill material 67 such as lightweight aggregate, lightweight material and geotextile, styrofoam, etc., the construction of the surface layer improving section 21 can be simplified even on soft ground. Furthermore, rapid construction can be carried out by staffing, and the risk of machine failure can be reduced. If lightweight aggregates made of waste materials are used, environmental load can be reduced.
[0053]
In the present embodiment, the road bridge 1 having two lanes on one side can be constructed in a short period of time by combining the method for dividing the side span girder 13 and the method for constructing the embankment portion 23 for constructing the preceding side portion.
[0054]
In this embodiment, a road bridge is described as an example, but a three-dimensional intersection other than a road bridge can be constructed in the same manner. In some cases, girders other than the side span girder are divided and constructed. In FIG. 3, the embankment 23 is constructed in parallel with Steps 105 to 108. However, the construction time of the embankment 23 is not limited to this, and the embankment 23 is constructed when necessary work zones and time can be secured. Just fine.
[0055]
Further, in FIG. 3, as shown in Steps 110 and 111, the embankment portion 23 is provided with the L-shaped precast retaining wall 65 for forming the side portion of the permanent construction in two-stage construction for each side. Step 110 and Step 111 may be performed in parallel, and the L-shaped precast retaining walls 65 on both sides may be installed simultaneously in one-step construction, depending on the size of the material and the state of material transportation and temporary placement.
[0056]
In this embodiment, the method of dividing the girder and the method of constructing the embankment for constructing the preceding side portion are combined, but they may be used alone. For example, there is a case where the split construction of the girder and the construction method of another embankment are combined. In some cases, the construction method of another girder is combined with the construction method of the embankment for constructing the preceding side portion.
[0057]
In the embankment 23, the leading side is constructed using the T-type precast retaining wall 43, but the leading side may be constructed using other members. FIG. 17 and FIG. 18 are cross-sectional views of the embankment portion in which the preceding side portion is constructed using other members.
[0058]
In the embankment shown in FIG. 17, an L-type precast retaining wall 83 is used instead of the T-type precast retaining wall 43 of the embankment 23 when forming the preceding side portion. Cast-in-place concrete 59 is cast between and outside the L-shaped precast retaining walls 83 arranged in two rows, and a bottom slab portion 81 is formed. The L-shaped precast member 65 is installed on the cast-in-place concrete 59 of the bottom slab 81.
[0059]
In the embankment shown in FIG. 18, a sheet pile 87 is used instead of the T-type precast retaining wall 43 of the embankment 23 when forming the preceding side portion. Cast-in-place concrete 59 is cast between and outside the sheet piles 87 installed in two rows, and a bottom slab portion 85 is formed. The L-shaped precast member 65 is installed on the cast-in-place concrete 59 of the bottom slab 85.
[0060]
As shown in FIGS. 17 and 18, by forming the leading side using the L-shaped precast retaining wall 83 and the sheet pile 87, similarly to the embankment part 23, even when the construction yard is narrow, the leading side is formed. The required number of lanes can be secured on both sides of the section and above the embankment being constructed. In addition, the embankment can be constructed in a short period of time by using the lightweight backfill material 61, the backfill material 67, such as the lightweight aggregate, the lightweight material, the geotextile, and the styrene foam, and the L-shaped precast member 65.
[0061]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to provide a method of constructing a three-dimensional intersection, a method of constructing a three-dimensional intersection and an embankment portion, and an embankment portion that can be constructed in a narrow permanent work zone.
[Brief description of the drawings]
FIG. 1 is a plan view of the road bridge 1. FIG. 2 is an elevation view of the road bridge 1. FIG. 3 is a flowchart showing a method of constructing the road bridge 1. FIG. FIG. 5 is an elevation view of the state before the side span main girder 25 is jacked up. FIG. 6 is a plan view of the side span main girder 25 after the jack up with the overhang 41 installed. FIG. 7 is a cross-sectional view of the main span girder 25 after jacking-up, in which an overhang 41 is installed on one side of the main span 25. FIG. 8 is a cross-sectional view of the main span girder 25 after jacking-up. FIG. 9 is a cross-sectional view of the installed state. FIG. 9 is a plan view of a state where the center span girder 15 is assembled on the side span girder 13a. FIG. 10 is a center span girder 15 on the side span girder 13a. FIG. 11 is an elevational view in a process of assembling the part 43, the pier 17 and the abutment 19; FIG. An elevation view in a state where the side span girder 13a and the side span girder 13b are jacked down and the side span girder 13 is erected on the pier 17 and the abutment 19. [FIG. 13] The side span girder on the pier 17 FIG. 14 is a cross-sectional view of a state in which a bottom plate portion of the embankment portion 23 is constructed. FIG. 15 is an L-type precast retaining wall 65 installed along one edge of a bottom plate portion 71. FIG. 16 is a cross-sectional view of the embankment portion 23. FIG. 17 is a cross-sectional view of the embankment portion where the preceding side portion is constructed using another member. FIG. 18 is a preceding side portion using another member. Sectional view of embankment part where part was constructed
1 ... road bridge 5 ... support pile 7 ... footing 9 ... support layer 11 ... ground 13, 13a, 13b ... side span girder 15 ... center span girder 17, 17a, 17b ... Pier 19, 19a, 19b ... Abutment 23, 23a, 23b ... Embankment part 25, 25a, 25b ... Side span main girder 27 ... Lifting device 41, 41a, 41b , 53 ... Overhang portions 42, 64 ... Horizontal members 43, 43a, 43b, 83 ... T-shaped precast retaining walls 44, 66 ... Vertical members 47 ... Central span main girder 59 Cast-in-place concrete 61, 67 Backfill material 65 L-shaped precast members 71, 81, 85 Bottom plate 73 Side

Claims (12)

作業領域で主桁を組み立て、前記主桁に昇降装置を設置する工程(a)と、
前記昇降装置を用いて前記主桁を上昇させる工程(b)と、
前記作業領域を拡大し、前記主桁に張出部を取り付ける工程(c)と、
を具備することを特徴とする立体交差の構築方法。
(A) assembling a main girder in a work area and installing a lifting device on the main girder;
(B) raising the main girder using the lifting device;
(C) enlarging the work area and attaching an overhang to the main girder;
A method of constructing a grade separation, comprising:
前記工程(a)の前に形成した基礎上に、前記工程(c)と並行して橋脚を構築することを特徴とする請求項1記載の立体交差の構築方法。The method according to claim 1, wherein a bridge pier is constructed on the foundation formed before the step (a) in parallel with the step (c). 前記工程(c)の後、前記桁を下降させて前記橋脚上に設置する工程(d)をさらに具備することを特徴とする請求項2記載の立体交差の構築方法。The method according to claim 2, further comprising, after the step (c), a step (d) of lowering the girder and installing the girder on the pier. 請求項1から請求項3のいずれかに記載された立体交差の構築方法により構築されたことを特徴とする立体交差。A three-dimensional intersection constructed by the method of constructing a three-dimensional intersection according to any one of claims 1 to 3. 2列の先行する側部および底版部を形成する工程(a)と、
前記先行する側部の間に第1の埋め戻し材を充填する工程(b)と、
前記底版部の片側の縁に第1の本設側部を形成する工程(c)と、
前記先行する側部と前記第1の本設側部の間に第2の埋め戻し材を充填する工程(d)と、
前記底版部のもう一方の縁に第2の本設側部を形成する工程(e)と、
前記先行する側部と前記第2の本設側部の間に第3の埋め戻し材を充填する工程(f)と、
を具備することを特徴とする盛土部の構築方法。
(A) forming two rows of leading side and bottom slabs;
(B) filling a first backfill between said preceding sides;
(C) forming a first permanent side at one edge of the bottom plate;
(D) filling a second backfill between the preceding side and the first permanent side;
(E) forming a second permanent side at the other edge of the bottom plate;
Filling a third backfill between said leading side and said second permanent side (f);
A method for constructing an embankment, comprising:
前記工程(d)の後、盛土部上に少なくとも2車線が確保されることを特徴とする請求項5記載の盛土部の構築方法。The method according to claim 5, wherein at least two lanes are secured on the embankment after the step (d). 前記工程(c)から前記工程(d)と、前記工程(e)から前記工程(f)を並行して行うことを特徴とする請求項5記載の盛土部の構築方法。The method according to claim 5, wherein the steps (c) to (d) and the steps (e) to (f) are performed in parallel. 前記先行する側部は、橋軸直角方向の断面が逆T字型またはL字型のプレキャスト部材を2列に並べて形成されることを特徴とする請求項5記載の盛土部の構築方法。6. The method according to claim 5, wherein the leading side portion is formed by arranging precast members having an inverted T-shaped or L-shaped cross section in a direction perpendicular to the bridge axis in two rows. 前記先行する側部は、矢板を2列に並べて形成されることを特徴とする請求項5記載の盛土部の構築方法。The method according to claim 5, wherein the leading side portion is formed by arranging sheet piles in two rows. 前記第1の本設側部および前記第2の本設側部は、橋軸直角方向の断面がL字型のプレキャスト部材を、前記底版部上に配置して形成されることを特徴とする請求項5記載の盛土部の構築方法。The first permanent construction side part and the second permanent construction side part are formed by disposing a precast member having an L-shaped cross section in a direction perpendicular to the bridge axis on the bottom slab. A method for constructing an embankment according to claim 5. 前記第1の埋め戻し材、前記第2の埋め戻し材、前記第3の埋め戻し材は、軽量骨材、ジオテキスタイル、発泡プラスチック等であることを特徴とする請求項5記載の盛土部の構築方法。The construction of the embankment according to claim 5, wherein the first backfill material, the second backfill material, and the third backfill material are lightweight aggregate, geotextile, foamed plastic, or the like. Method. 請求項5から請求項11のいずれかに記載された盛土部の構築方法により構築されたことを特徴とする盛土部。An embankment constructed by the embankment construction method according to any one of claims 5 to 11.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007285031A (en) * 2006-04-18 2007-11-01 Maeda Corp Approach construction method
CN113944107A (en) * 2021-10-28 2022-01-18 中铁二十局集团有限公司 Land short pier bridge roadbed filling type bridge-climbing channel and construction method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102234979B (en) * 2010-04-30 2013-07-10 华泰(南通)船务有限公司 Main pier steel sinking well for bridge and process for integrally hoisting and installing steel sinking well sections thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007285031A (en) * 2006-04-18 2007-11-01 Maeda Corp Approach construction method
CN113944107A (en) * 2021-10-28 2022-01-18 中铁二十局集团有限公司 Land short pier bridge roadbed filling type bridge-climbing channel and construction method thereof
CN113944107B (en) * 2021-10-28 2023-10-03 中铁二十局集团有限公司 Land short pier bridge roadbed filling type bridge loading channel and construction method thereof

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