JP2004285735A - Method of constructing temporary landing bridge by using truss frame - Google Patents

Method of constructing temporary landing bridge by using truss frame Download PDF

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Publication number
JP2004285735A
JP2004285735A JP2003080391A JP2003080391A JP2004285735A JP 2004285735 A JP2004285735 A JP 2004285735A JP 2003080391 A JP2003080391 A JP 2003080391A JP 2003080391 A JP2003080391 A JP 2003080391A JP 2004285735 A JP2004285735 A JP 2004285735A
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Japan
Prior art keywords
truss frame
pile
fixed
support
girder
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JP2003080391A
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Japanese (ja)
Inventor
Hiroshige Takano
広茂 高野
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I KOGYO KK
Kochi Marutaka KK
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I KOGYO KK
Kochi Marutaka KK
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Priority to JP2003080391A priority Critical patent/JP2004285735A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of constructing a temporary landing bridge available at sea and on land, which is small in the number of construction steps in the field, shortens a construction period, is excellent in construction efficiency and construction accuracy, and ensures the installation accuracy thereof on the ground. <P>SOLUTION: According to the method, a truss frame consisting of side members, cross members, and diagonal members connecting intersections between the side and cross members, is arranged at a predetermined altitude from a sea level or a land level, and fixed piles are driven along guide pipes provided for the truss frame, followed by temporarily fixing the truss frame to the fixed piles. Thereafter support piles each formed of a steel pipe are driven inside the guide pipes into the ground, and down-the-hole hammers are inserted into the respective steel pipes to excavate the ground to a predetermined depth. Further the support piles are further deeply driven, and beam seats and girders are sequentially fixed on the truss frame, followed by laying lining plates on the girders. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は仮設桟橋の施工方法に関し、より詳しくはトラス枠と杭を用いて海上や陸上に仮設桟橋を構築するための施工方法に関する。
【0002】
【従来の技術】
海上に桟橋を施工する方法としては、例えば斜張橋方式の桟橋架設工法が知られている。
このような斜張式の桟橋架設工法は、一般には図23に示すように、
(1)上部パネル(P)をクレーンにより吊り込み、
(2)既設の橋脚部(A)と斜張ケーブル(K)に連結し、
(3)鋼管からなる杭橋脚(A1)を打設した後、
(4)打設された杭橋脚(A1)に充填材を注入して杭頭処理を行う
という一連の工程により実施される。
しかしながら、このような斜張橋式の桟橋架設工法は、現場での施工工数が多いために施工期間が長くなるという問題があった。また、施工現場が不安定であるために施工能率や施工精度の面でもやや問題があった。
【0003】
かかる実情に鑑み、施工期間の短縮を図るために、トラス構造を有する枠体を利用した桟橋の架設工法が提案されている(例えば、特許文献1参照)。
【0004】
【特許文献1】
特開2002−206218号公報
【0005】
また、同様にトラス枠を用いた仮設桟橋として、杭を挿入するためのガイド鋼管を備えたトラス枠を用いる方法が存在している。
この方法は、海上や陸上の地盤に予め杭を打設し、次いでクレーンで吊下されたガイド枠を降下させてガイド鋼管内に杭を挿入させ、それからガイド枠を杭に固定して杭頭処理や桁の設置を行うものである。
【0006】
【発明が解決しようとする課題】
しかしながら、上記した従来のトラス枠を用いた施工方法には以下に述べるような課題が存在していた。
先ず、前者の方法、即ち特許文献1の開示技術は、施工期間を短縮することができるというメリットはあるが、杭を使用せずに地盤上に直接トラス構造体を設置する構造であるために、地盤が軟弱な場合には安定性に問題があり、施工可能な場所が限られるという課題があった。
一方、後者の方法は、杭を用いるために桟橋が安定するというメリットがあるが、打設された杭に対してトラス枠を位置決めすることが難しく、施工性が悪いという課題があった。
【0007】
本発明は上記した従来技術の課題を解決すべくなされたものであって、現場での施工工数が少なく施工期間を短縮することができるとともに、施工能率や施工精度にも優れており、地盤への設置強度も確実に確保することが可能な海上及び陸上における仮設桟橋の施工方法を提供せんとするものである。
【0008】
【課題を解決するための手段】
請求項1に係る発明は、縦材と横材とこれらの交点同士を繋ぐ斜材とからなるトラス枠を海面又は陸上面から所定高さに配置し、該トラス枠に設けられたガイド管に沿って固定杭を打設し、該固定杭に対してトラス枠を仮固定し、その後前記ガイド管内に鋼管からなる支持杭を地盤に打込み、該鋼管内にダウンザホールハンマを挿入して所定深さまで掘削して前記支持杭をさらに深く打込んだ後、前記トラス枠上に桁受及び桁を順次固定し、該桁上に覆工板を敷設することを特徴とするトラス枠を用いた仮設桟橋の施工方法に関する。
【0009】
請求項2に係る発明は、海上の所定位置に横材と縦材とこれらの交点同士を繋ぐ斜材とからなるトラス枠を載せた台船を回航し、該台船上のトラス枠に設けられたガイド管に沿って固定杭を打設し、次いで該トラス枠を吊り上げて前記台船をトラス枠の下部から移動させた後、該トラス枠を所定高さ位置にて前記固定杭に仮固定し、その後前記ガイド管内に鋼管からなる支持杭を海底の支持層まで打込み、該鋼管内にダウンザホールハンマを挿入して所定深さまで掘削して前記支持杭をさらに深く打込んだ後、前記トラス枠上に桁受及び桁を順次固定し、該桁上に覆工板を敷設することを特徴とするトラス枠を用いた仮設桟橋の施工方法に関する。
請求項3に係る発明は、海上に自己昇降式台船を配置し、該自己昇降式台船を基準とした位置測定により前記トラス枠の位置決めを行うとともに、該自己昇降式台船上に配置されたクレーンを使用して前記固定杭及び支持杭の打設を行うことを特徴とする請求項2記載のトラス枠を用いた仮設桟橋の施工方法に関する。
【0010】
請求項4に係る発明は、縦材と横材とこれらの交点同士を繋ぐ斜材とからなるトラス枠を陸上に設置したクレーンで吊下して陸上又は海上の所定位置に配置し、該吊下されたトラス枠に設けられたガイド管に沿って固定杭を打設し、次いで該トラス枠を所定高さ位置にて前記固定杭に仮固定し、その後前記ガイド管内に鋼管からなる支持杭を地盤に打込み、該鋼管内にダウンザホールハンマを挿入して所定深さまで掘削して前記支持杭をさらに深く打込んだ後、前記トラス枠上に桁受及び桁を順次固定し、該桁上に覆工板を敷設することを特徴とするトラス枠を用いた仮設桟橋の施工方法に関する。
【0011】
【発明の実施の形態】
以下、本発明に係る仮設桟橋の施工方法について、図面を参照しつつ説明する。
図1乃至図11は本発明に係る施工方法の一例を工程順に示した説明図である。これらの図示例は、海上に仮設桟橋を構築する方法であって全ての作業を海上にて行う方法を示している。
先ず、仮設桟橋の施工位置の近傍箇所に自己昇降式台船(以下、SEP台船と称す)(1)を配置し、作業足場となるプラットフォーム(2)を海面上に浮上させる。
そして、SEP台船(1)のプラットフォーム(2)上に逃げの基準線を出し、この逃げの基準線から施工される桟橋の位置を定める。このSEP台船を基準とした位置測定に際しては、電波測位儀や光波測位儀による測位システム、或いはGPSやジャイロコンパスを利用した測位システム等の公知のシステムを使用することができる。
このとき、SEP台船が海面上に浮上しているため、非常に高精度の位置測定を行うことが可能となる。
【0012】
次いで、海上の桟橋施工位置にトラス構造を有する枠体からなるトラス枠(3)を載せた平台船(4)を回航し、SEP台船(1)のプラットフォーム(2)上に配置したクローラクレーン等のクレーン(5)を利用して該トラス枠(3)を台船(4)上で所定位置にセットする(図1参照)。
このとき、SEP台船(1)のプラットフォーム(2)の逃げから測定を行いながら、トラス枠(3)又は平台船(4)をSEP台船(1)から鋼材(図示略)で固定する。
【0013】
トラス枠(3)は、図12に示すような縦材(31)と横材(32)からなる直方体形状の枠体単体を縦横方向に多数連設し、縦材(31)と横材(32)の交点同士を繋ぐように斜材(ブレース材)(33)を設けた構造からなり、縦材(31)は中空筒状とされ、打設される杭を垂直方向にガイドするガイド管としての役割を果たす。
【0014】
図13はトラス枠(3)を構成する縦材(31)を示す図であり、(a)は上面図(平面図)、(b)は正面図である。
図示の如く、縦材(31)を構成する鋼管の上端部には、平面視正方形状の金属製のプレート(34)が固着されている。尚、(b)に符号(35)で示された部材は、斜材(33)と横材(32)及び縦材(31)を接合するための金属製プレートである(図12では省略されている)。
【0015】
プレート(34)は、中心に鋼管の内径と略同じ径の円形穴(34a)を有しており、その四隅近傍位置には多数の貫通孔(34b)が設けられている。
また、縦材(31)を構成する鋼管には、周方向に等角度間隔(図示例では90°間隔)で形成された貫通孔が、鋼管の縦方向に等間隔で複数箇所(図示例では5箇所)に設けられており、鋼管の外面にはこれらの貫通孔と中心穴が一致するようにナット(34c)が固着される。
これらのナット(34c)には、鋼管内に向けて前進可能にボルト(図示せず)が螺合され、これによって、鋼管内に挿入された杭に対してボルトの先端を当接させて、杭を鋼管内にて位置決め固定することが可能となる。
【0016】
また、プレート(34)に形成された貫通孔(34b)は、後述する杭頭処理の際に利用される。
具体的には、ガイド管(縦材)の上端部から突出した杭頭を切断した後、その杭頭切断面を上方から覆うように、図14に示すような平面視正方形状の天蓋プレート(36)を被せて、図15に示すように該天蓋プレート(36)とプレート(34)をボルト及びナットで固定することにより杭頭を被覆する。尚、この天蓋プレートは後述するキャップ(13)に相当する。
【0017】
上記した如く台船(4)上の所定位置にトラス枠(3)をセットした後、該トラス枠(3)に設けられたガイド管(31)内に沿って、トラス枠(3)を固定するための固定杭(6)を海底地盤に打設する(図2参照)。
この固定杭(6)の打設は、SEP台船(1)のプラットフォーム(2)上に配置したクレーン(5)からバイブロフォンサ(7)を用いて行う。
固定杭(6)は、固定の為の必要最小限の本数で、トラス枠(3)に多数設けられたガイド管(31)の一部のみに打設すればよく、通常はトラス枠(3)の四隅近傍を含む4〜8本程度とされ、残りの大部分のガイド管(31)には後述する支持杭(10)が打設される。
【0018】
次いで、SEP台船(1)のプラットフォーム(2)上に配置したクレーン(5)によりトラス枠(3)を僅かに(例えば10cm程度)吊り上げて、引船(8)によって台船(4)をトラス枠(3)の下部から引き抜いて移動させる(図3参照)。
そして、クレーン(5)によりトラス枠(3)を所定高さにセットして(図4参照)、トラス枠(3)をパワージャッキ(9)等により高さ調整して固定杭(6)に仮固定する(図5参照)。
【0019】
トラス枠(3)を固定杭(6)に仮固定した後、該固定杭(6)が挿通されていないトラス枠(3)のガイド管(31)内に沿って鋼管からなる支持杭(10)を、海底の砂礫層(11)下の支持層(12)まで打込む(図6参照)。
この支持杭(10)の打設も固定杭(6)の場合と同様に、SEP台船(1)のプラットフォーム(2)上に配置したクレーン(5)からバイブロフォンサ(7)を用いて行う。
【0020】
次いで、支持杭(10)を構成する鋼管内にダウンザホールハンマを挿入して所定深さまで鋼管内を掘削し(図7参照)、その後、鋼管(10)内に根固め用のモルタルを注入してから(図8参照)、バイブロフォンサ(7)を用いて支持杭(鋼管)(10)をさらに支持層(12)の下方へと深く打込む(図9参照)。
これらの工程も全て、SEP台船(1)のプラットフォーム(2)上に配置したクレーン(5)を利用して行われる。
【0021】
支持杭(10)を所定深さまで打設した後、杭頭をトラス枠(3)が上端部と略揃うように支持杭(10)とトラス枠(3)を固定処理し、支持杭(10)の上端開口穴を塞ぐようにキャップ(13)を取り付ける(図10参照)。
このとき、トラス枠(3)に仮固定されている固定杭(6)については、パワージャッキ(9)を取り外して、固定杭(6)を支持杭(10)と同様に所定深さまで打設後、支持杭(10)と杭頭が揃うように杭頭処理をしてトラス枠(3)と固定し、同様にキャップ(13)を取り付ければよい。
そして、トラス枠(3)のキャップ(13)上に桁受(14)をボルトにて固定し、次いで桁受(14)の上部に主桁(15)と横桁(16)を架設し、これらの桁の上部に覆工板(17)を敷設して、高欄(18)を設置する(図11参照)。
【0022】
以上の工程によって海上に桟橋の架設が完了し、このように架設された桟橋は、例えば橋脚を立設する際の作業足場等として利用することができる。
【0023】
図16乃至図22は本発明に係る施工方法の別の例を工程順に示した説明図である。これらの図示例は、陸上に設置したクレーンを利用して海上又は陸上に仮設桟橋を構築する方法である。
先ず、陸上に設置したクレーン(5)によりトラス枠(3)を吊下して、該トラス枠(3)を、陸上(山や丘等)又は海上の所定位置に、陸上面又は海面から所定高さ浮かせた状態で配置位置決めする(図16参照)。尚、位置決め方法としては、前述したような公知の側位システムを利用した方法が用いられる。
次いで、吊下されたトラス枠(3)に設けられたガイド管(31)内に沿って、トラス枠(3)を固定するための固定杭(6)を地盤に打設する(図17参照)。
この固定杭(6)の打設は、陸上の別の位置に配置した別のクレーン(51)からバイブロフォンサ(7)を用いて行う。
固定杭(6)は、トラス枠(3)に多数設けられたガイド管(31)の一部のみに打設され、残りの大部分のガイド管(31)には後述する支持杭(10)が打設される。
【0024】
次いで、クレーン(5)によりトラス枠(3)を所定高さにセットして(図18参照)、図5に示したのと同様に、トラス枠(3)をパワージャッキ(9)等により高さ調整して固定杭(6)に仮固定する。
【0025】
トラス枠(3)を固定杭(6)に仮固定した後、該固定杭(6)が挿通されていないトラス枠(3)のガイド管(31)内に沿って鋼管からなる支持杭(10)を、砂礫層(11)下の支持層(12)まで打込む(図19参照)。
この支持杭(10)の打設も固定杭(6)の場合と同様に、クレーン(51)からバイブロフォンサ(7)を用いて行う。
【0026】
次いで、支持杭(10)を構成する鋼管内にダウンザホールハンマを挿入して所定深さまで鋼管内を掘削し(図20参照)、その後、鋼管(10)内に根固め用のモルタルを注入してから(図21参照)、バイブロフォンサ(7)を用いて支持杭(鋼管)(10)をさらに支持層(12)の下方へと深く打込む(図22参照)。
これらの工程も全て、クレーン(51)を利用して行われる。
【0027】
支持杭(10)を所定深さまで打設した後、図10に示したのと同様に、杭頭をトラス枠(3)が上端部と略揃うように支持杭(10)とトラス枠(3)を固定処理し、支持杭(10)の上端開口穴を塞ぐようにキャップ(13)を取り付ける。
このとき、トラス枠(3)に仮固定されている固定杭(6)については、パワージャッキ(9)を取り外して、固定杭(6)を支持杭(10)と同様に所定深さまで打設後、支持杭(10)と杭頭が揃うように杭頭処理をしてトラス枠(3)と固定し、同様にキャップ(13)を取り付ければよい。
そして、図11に示したのと同様に、トラス枠(3)のキャップ(13)上に桁受(14)をボルトにて固定し、次いで桁受(14)の上部に主桁(15)と横桁(16)を架設し、これらの桁の上部に覆工板(17)を敷設して、高欄(18)を設置する。
【0028】
以上の工程によって、陸上からの作業によって、山や丘等の陸上もしくは海上に桟橋の架設が完了し、このように架設された桟橋は、例えば橋脚を立設する際の作業足場等として利用することができる。
【0029】
【発明の効果】
以上説明したように、請求項1に係る発明によれば、トラス枠を所定高さに配置した後に、該トラス枠に設けられたガイド管に沿って固定杭を打設することによって、現場での施工工数が少なく施工期間を短縮することができるとともに、施工能率や施工精度にも優れており、地盤への設置強度も確実に確保することが可能な海上及び陸上における仮設桟橋の施工方法が提供される。
【0030】
請求項2に係る発明によれば、海上仮設桟橋の施工において、現場での施工工数を少なくして施工期間を短縮することができるとともに、地盤への設置強度も確実に確保することができる。また、潜水溶接工や水中作業員が不要となり、施工コストを低減することが可能となる。更に、工場で製作したトラス枠を利用することによって、現場での危険作業を削減することができる。
請求項3に係る発明によれば、施工精度に非常に優れ、しかも作業足場が固定されているため施工能率にも優れた、海上仮設桟橋の施工方法が提供される。
請求項4に係る発明によれば、山や丘などの陸上或いは陸地に近い海上における仮設桟橋の施工を効率良く、しかも高い精度で安定して行うことが可能となる。
【図面の簡単な説明】
【図1】本発明に係る施工方法を工程順に示した説明図である。
【図2】本発明に係る施工方法を工程順に示した説明図である。
【図3】本発明に係る施工方法を工程順に示した説明図である。
【図4】本発明に係る施工方法を工程順に示した説明図である。
【図5】本発明に係る施工方法を工程順に示した説明図である。
【図6】本発明に係る施工方法を工程順に示した説明図である。
【図7】本発明に係る施工方法を工程順に示した説明図である。
【図8】本発明に係る施工方法を工程順に示した説明図である。
【図9】本発明に係る施工方法を工程順に示した説明図である。
【図10】本発明に係る施工方法を工程順に示した説明図である。
【図11】本発明に係る施工方法を工程順に示した説明図である。
【図12】本発明に係る施工方法において用いられるトラス枠の外観斜視図である。
【図13】トラス枠を構成する縦材を示す図であり、(a)は上面図(平面図)、(b)は正面図である。
【図14】トラス枠のガイド管(縦材)に被せて固定される天蓋プレートの平面図である。
【図15】杭頭処理の方法を示す図である。
【図16】本発明に係る施工方法の別の例を工程順に示した説明図である。
【図17】本発明に係る施工方法の別の例を工程順に示した説明図である。
【図18】本発明に係る施工方法の別の例を工程順に示した説明図である。
【図19】本発明に係る施工方法の別の例を工程順に示した説明図である。
【図20】本発明に係る施工方法の別の例を工程順に示した説明図である。
【図21】本発明に係る施工方法の別の例を工程順に示した説明図である。
【図22】本発明に係る施工方法の別の例を工程順に示した説明図である。
【図23】従来の海上に桟橋を施工する方法の一例を示す説明図である。
【符号の説明】
1 自己昇降式台船
3 トラス枠
31 縦材(ガイド管)
32 横材
33 斜材(ブレース材)
4 台船(平台船)
6 固定杭
10 支持杭
12 支持層
14 桁受
15 主桁
16 横桁
17 覆工板
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for constructing a temporary pier, and more particularly to a method for constructing a temporary pier on the sea or land using a truss frame and a pile.
[0002]
[Prior art]
As a method of constructing a pier on the sea, for example, a cable-stayed bridge pier construction method is known.
Generally, such a cable-stayed pier construction method is shown in FIG.
(1) Hang the upper panel (P) with a crane,
(2) Connect to the existing pier (A) and cable stayed cable (K),
(3) After placing a pile pier (A1) made of steel pipe,
(4) It is carried out by a series of steps of injecting a filler into the piled pier (A1) and performing pile head treatment.
However, such a cable-stayed bridge-type pier construction method has a problem that the construction period is long because the number of construction steps on site is large. In addition, since the construction site is unstable, there are some problems in terms of construction efficiency and construction accuracy.
[0003]
In view of such circumstances, in order to shorten the construction period, a pier construction method using a frame having a truss structure has been proposed (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-2002-206218
Similarly, there is a method using a truss frame provided with a guide steel pipe for inserting a pile as a temporary pier using a truss frame.
In this method, a pile is placed in advance on the ground on the sea or land, then the guide frame suspended by a crane is lowered to insert the pile into the guide steel pipe, and then the guide frame is fixed to the pile and the pile head It performs processing and installation of girders.
[0006]
[Problems to be solved by the invention]
However, the above-described conventional construction method using a truss frame has the following problems.
First, the former method, that is, the technology disclosed in Patent Document 1 has an advantage that the construction period can be shortened, but since the truss structure is directly installed on the ground without using a pile, However, when the ground is soft, there is a problem in stability, and there is a problem in that a place where construction is possible is limited.
On the other hand, the latter method has an advantage that the pier is stabilized by using the pile, but has a problem that it is difficult to position the truss frame with respect to the piled in, and the workability is poor.
[0007]
The present invention has been made in order to solve the above-described problems of the prior art, and can reduce the number of construction steps on site, shorten the construction period, and have excellent construction efficiency and construction accuracy, and It is an object of the present invention to provide a method for constructing a temporary pier on the sea and on the land which can ensure the installation strength of the pier.
[0008]
[Means for Solving the Problems]
The invention according to claim 1 is that a truss frame composed of a vertical member, a horizontal member, and a diagonal member connecting these intersections is arranged at a predetermined height from the sea surface or land surface, and a guide pipe provided on the truss frame is provided. A fixed pile is driven along, a truss frame is temporarily fixed to the fixed pile, and a support pile made of a steel pipe is driven into the ground in the guide pipe, and a down-the-hole hammer is inserted into the steel pipe to a predetermined depth. A temporary pier using a truss frame, wherein after excavating and driving the support pile further deeply, a girder support and a girder are sequentially fixed on the truss frame, and a lining plate is laid on the girder. Construction method.
[0009]
The invention according to claim 2 circulates a barge carrying a truss frame composed of a horizontal member, a vertical member, and a diagonal member connecting these intersections at a predetermined position on the sea, and is provided on the truss frame on the barge. After placing the fixed pile along the guide pipe, lifting the truss frame and moving the barge from the lower part of the truss frame, the truss frame is temporarily fixed to the fixed pile at a predetermined height. After that, a support pile made of a steel pipe is driven into the guide pipe to the support layer on the seabed, a down-the-hole hammer is inserted into the steel pipe, excavated to a predetermined depth, and the support pile is driven further deeply. The present invention relates to a method for constructing a temporary pier using a truss frame, in which a girder support and a girder are sequentially fixed thereon, and a lining plate is laid on the girder.
The invention according to claim 3 arranges a self-elevating barge on the sea, performs positioning of the truss frame by position measurement with reference to the self-elevating barge, and is disposed on the self-elevating barge. 3. The method for constructing a temporary pier using a truss frame according to claim 2, wherein the fixed pile and the support pile are driven by using a crane.
[0010]
The invention according to claim 4 is that a truss frame composed of a vertical member, a horizontal member, and a diagonal member connecting these intersections is suspended by a crane installed on land and arranged at a predetermined position on land or at sea, and A fixed pile is driven along a guide pipe provided on the lowered truss frame, and then the truss frame is temporarily fixed to the fixed pile at a predetermined height position, and then a support pile made of a steel pipe is provided in the guide pipe. Into the ground, insert a down-the-hole hammer into the steel pipe, excavate to a predetermined depth and drive the support pile further deeply, then fix the girder support and girder sequentially on the truss frame, and place it on the girder The present invention relates to a method for constructing a temporary pier using a truss frame characterized by laying a lining plate.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a method for constructing a temporary pier according to the present invention will be described with reference to the drawings.
1 to 11 are explanatory views showing an example of a construction method according to the present invention in the order of steps. These illustrated examples show a method of constructing a temporary pier on the sea and performing all the work on the sea.
First, a self-elevating type barge (hereinafter, referred to as an SEP barge) (1) is arranged near a construction position of a temporary pier, and a platform (2) serving as a work platform is floated on the sea surface.
Then, an escape reference line is drawn on the platform (2) of the SEP barge (1), and the position of the pier to be constructed is determined from the escape reference line. For the position measurement based on the SEP barge, a known system such as a positioning system using a radio positioning system or a light wave positioning system, or a positioning system using a GPS or a gyro compass can be used.
At this time, since the SEP barge is floating on the sea surface, it is possible to perform position measurement with extremely high accuracy.
[0012]
Next, a flat barge (4) carrying a truss frame (3) composed of a frame having a truss structure is circulated at an offshore pier construction position, and a crawler crane placed on the platform (2) of the SEP barge (1). The truss frame (3) is set at a predetermined position on the barge (4) using a crane (5) such as (see FIG. 1).
At this time, the truss frame (3) or the flat barge (4) is fixed from the SEP barge (1) with steel (not shown) while measuring from the escape of the platform (2) of the SEP barge (1).
[0013]
The truss frame (3) includes a large number of rectangular parallelepiped frame bodies each composed of a vertical member (31) and a horizontal member (32) as shown in FIG. 32) A structure in which a diagonal member (brace material) (33) is provided so as to connect the intersections of 32), and the vertical member (31) is formed in a hollow cylindrical shape and guides a pile to be driven in a vertical direction. Play a role.
[0014]
FIG. 13 is a view showing a vertical member (31) constituting the truss frame (3), (a) is a top view (plan view), and (b) is a front view.
As shown in the figure, a metal plate (34) having a square shape in a plan view is fixed to an upper end portion of a steel pipe constituting the vertical member (31). The member indicated by reference numeral (35) in (b) is a metal plate for joining the diagonal member (33) with the horizontal member (32) and the vertical member (31) (omitted in FIG. 12). ing).
[0015]
The plate (34) has a circular hole (34a) having a diameter substantially equal to the inner diameter of the steel pipe at the center, and a number of through holes (34b) are provided near four corners thereof.
In the steel pipe constituting the vertical member (31), through holes formed at equal angular intervals (90 ° intervals in the illustrated example) in the circumferential direction are provided at a plurality of locations (in the illustrated example, at equal intervals) in the vertical direction of the steel pipe. (5 places), and a nut (34c) is fixed to the outer surface of the steel pipe so that these through holes and the center hole coincide with each other.
Bolts (not shown) are screwed into these nuts (34c) so as to be able to advance into the steel pipe, whereby the tips of the bolts are brought into contact with the piles inserted into the steel pipe, The pile can be positioned and fixed in the steel pipe.
[0016]
Further, the through hole (34b) formed in the plate (34) is used at the time of the pile head processing described later.
Specifically, after cutting the pile head protruding from the upper end of the guide tube (vertical member), a square canopy plate as viewed in plan as shown in FIG. 36) and cover the pile head by fixing the canopy plate (36) and plate (34) with bolts and nuts as shown in FIG. This canopy plate corresponds to a cap (13) described later.
[0017]
After setting the truss frame (3) at a predetermined position on the barge (4) as described above, the truss frame (3) is fixed along the guide pipe (31) provided on the truss frame (3). A fixed pile (6) is cast on the seabed (see FIG. 2).
The setting of the fixed pile (6) is performed by using a vibrating force (7) from a crane (5) arranged on the platform (2) of the SEP barge (1).
The fixed stake (6) is required to be fixed to the truss frame (3) and only a part of the guide tubes (31) provided in the truss frame (3) is required. ), Including the vicinity of the four corners, about 4 to 8 rods, and a support pile (10) to be described later is cast into most of the remaining guide pipes (31).
[0018]
Next, the truss frame (3) is slightly lifted (for example, about 10 cm) by the crane (5) arranged on the platform (2) of the SEP barge (1), and the barge (4) is trussed by the tug (8). It is pulled out from the lower part of the frame (3) and moved (see FIG. 3).
Then, the truss frame (3) is set at a predetermined height by the crane (5) (see FIG. 4), the height of the truss frame (3) is adjusted by a power jack (9) or the like, and the truss frame (3) is fixed to the fixed pile (6). Temporarily fix (see FIG. 5).
[0019]
After the truss frame (3) is temporarily fixed to the fixed pile (6), the support pile (10) made of a steel pipe extends along the guide pipe (31) of the truss frame (3) through which the fixed pile (6) is not inserted. ) To the support layer (12) under the gravel layer (11) on the sea floor (see FIG. 6).
In the same manner as in the case of the fixed pile (6), the support pile (10) is cast by using the vibro-foncer (7) from the crane (5) arranged on the platform (2) of the SEP barge (1). Do.
[0020]
Next, a down-the-hole hammer is inserted into the steel pipe constituting the support pile (10) to excavate the steel pipe to a predetermined depth (see FIG. 7), and then mortar for consolidation is injected into the steel pipe (10). Then, the support pile (steel pipe) (10) is driven deeper below the support layer (12) using the vibrating force (7) (see FIG. 9).
All of these steps are performed using a crane (5) arranged on the platform (2) of the SEP barge (1).
[0021]
After the support pile (10) is driven to a predetermined depth, the support pile (10) and the truss frame (3) are fixed to the pile head so that the truss frame (3) is substantially aligned with the upper end, and the support pile (10) is fixed. The cap (13) is attached so as to close the upper end opening hole of ()) (see FIG. 10).
At this time, with respect to the fixed pile (6) temporarily fixed to the truss frame (3), the power jack (9) is removed, and the fixed pile (6) is driven to a predetermined depth in the same manner as the support pile (10). After that, the pile head is treated so that the support pile (10) and the pile head are aligned, fixed to the truss frame (3), and a cap (13) may be attached in the same manner.
Then, the girder (14) is fixed on the cap (13) of the truss frame (3) with bolts, and then the main girder (15) and the horizontal girder (16) are erected on the upper part of the girder (14). A lining plate (17) is laid on the upper part of these girders, and a rail (18) is installed (see FIG. 11).
[0022]
The pier construction on the sea is completed by the above steps, and the pier constructed in this manner can be used, for example, as a work platform when erecting a pier.
[0023]
16 to 22 are explanatory views showing another example of the construction method according to the present invention in the order of steps. These illustrated examples are methods of constructing a temporary pier on the sea or on land using a crane installed on land.
First, a truss frame (3) is suspended by a crane (5) installed on land, and the truss frame (3) is placed at a predetermined position on land (mountains, hills, etc.) or on the sea from a land surface or sea surface. Positioning and positioning is performed with the height raised (see FIG. 16). As a positioning method, a method using a known lateral position system as described above is used.
Next, a fixed pile (6) for fixing the truss frame (3) is cast on the ground along the guide pipe (31) provided in the suspended truss frame (3) (see FIG. 17). ).
The placing of the fixed pile (6) is performed using a vibrating forceps (7) from another crane (51) arranged at another position on land.
The fixed pile (6) is cast into only a part of the guide pipes (31) provided in a large number on the truss frame (3), and the remaining most of the guide pipes (31) has support piles (10) described later. Is installed.
[0024]
Next, the truss frame (3) is set to a predetermined height by the crane (5) (see FIG. 18), and the truss frame (3) is raised by the power jack (9) or the like as shown in FIG. Adjust and temporarily fix to fixed pile (6).
[0025]
After the truss frame (3) is temporarily fixed to the fixed pile (6), the support pile (10) made of a steel pipe extends along the guide pipe (31) of the truss frame (3) through which the fixed pile (6) is not inserted. ) To the support layer (12) below the gravel layer (11) (see FIG. 19).
The driving of the support pile (10) is also carried out from the crane (51) using the vibro-foncer (7) as in the case of the fixed pile (6).
[0026]
Next, a down-the-hole hammer is inserted into the steel pipe constituting the support pile (10) to excavate the steel pipe to a predetermined depth (see FIG. 20), and then mortar for consolidation is injected into the steel pipe (10). Then (see FIG. 21), the support pile (steel pipe) (10) is further driven deeper below the support layer (12) by using the vibro-foncer (7) (see FIG. 22).
All of these steps are performed using a crane (51).
[0027]
After the support stake (10) has been driven to a predetermined depth, the pile head is moved to the support stake (10) and the truss frame (3) in such a manner that the truss frame (3) is substantially aligned with the upper end as shown in FIG. ) Is fixed, and a cap (13) is attached so as to cover the opening at the upper end of the support pile (10).
At this time, with respect to the fixed pile (6) temporarily fixed to the truss frame (3), the power jack (9) is removed, and the fixed pile (6) is driven to a predetermined depth in the same manner as the support pile (10). After that, the pile head is treated so that the support pile (10) and the pile head are aligned, fixed to the truss frame (3), and a cap (13) may be attached in the same manner.
Then, in the same manner as shown in FIG. 11, the girder (14) is fixed on the cap (13) of the truss frame (3) with bolts, and then the main girder (15) is placed on the upper part of the girder (14). And a horizontal girder (16) are erected, and a lining plate (17) is laid on the upper part of these girder to set up a railing (18).
[0028]
Through the above steps, pier construction is completed on land or sea, such as mountains and hills, by work from land, and the pier constructed in this way is used as a work platform or the like when erecting a pier, for example. be able to.
[0029]
【The invention's effect】
As described above, according to the first aspect of the present invention, after arranging the truss frame at a predetermined height, the fixed pile is driven along the guide pipe provided on the truss frame, so that it can be used on site. The construction method of temporary piers on the sea and on land, which can reduce the construction man-hours and shorten the construction period, is also excellent in construction efficiency and construction accuracy, and can reliably secure the installation strength on the ground Provided.
[0030]
According to the second aspect of the present invention, in the construction of the marine temporary pier, the number of construction steps on site can be reduced to shorten the construction period, and the strength of installation on the ground can be reliably ensured. Also, a submersible welder and a submersible worker are not required, and the construction cost can be reduced. Furthermore, by using a truss frame manufactured in the factory, dangerous work on site can be reduced.
According to the third aspect of the present invention, there is provided a method for constructing a marine temporary pier, which is very excellent in construction accuracy and also excellent in construction efficiency because a work scaffold is fixed.
According to the invention of claim 4, it is possible to efficiently and stably perform the construction of the temporary pier on land such as a mountain or a hill or on the sea near the land.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 2 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 3 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 4 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 5 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 6 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 7 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 8 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 9 is an explanatory diagram showing a construction method according to the present invention in the order of steps.
FIG. 10 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 11 is an explanatory view showing a construction method according to the present invention in the order of steps.
FIG. 12 is an external perspective view of a truss frame used in the construction method according to the present invention.
FIGS. 13A and 13B are diagrams showing vertical members constituting the truss frame, wherein FIG. 13A is a top view (plan view) and FIG. 13B is a front view.
FIG. 14 is a plan view of a canopy plate fixed over the guide tube (vertical member) of the truss frame.
FIG. 15 is a diagram showing a method of pile head processing.
FIG. 16 is an explanatory view showing another example of the construction method according to the present invention in the order of steps.
FIG. 17 is an explanatory view showing another example of the construction method according to the present invention in the order of steps.
FIG. 18 is an explanatory view showing another example of the construction method according to the present invention in the order of steps.
FIG. 19 is an explanatory view showing another example of the construction method according to the present invention in the order of steps.
FIG. 20 is an explanatory view showing another example of the construction method according to the present invention in the order of steps.
FIG. 21 is an explanatory view showing another example of the construction method according to the present invention in the order of steps.
FIG. 22 is an explanatory view showing another example of the construction method according to the present invention in the order of steps.
FIG. 23 is an explanatory view showing an example of a conventional method of constructing a pier on the sea.
[Explanation of symbols]
1 Self-elevating barge 3 Truss frame 31 Vertical member (guide tube)
32 Horizontal material 33 Diagonal material (Brace material)
4 barges (flat barges)
6 fixed pile 10 support pile 12 support layer 14 girder support 15 main girder 16 cross girder 17 lining plate

Claims (4)

縦材と横材とこれらの交点同士を繋ぐ斜材とからなるトラス枠を海面又は陸上面から所定高さに配置し、該トラス枠に設けられたガイド管に沿って固定杭を打設し、該固定杭に対してトラス枠を仮固定し、その後前記ガイド管内に鋼管からなる支持杭を地盤に打込み、該鋼管内にダウンザホールハンマを挿入して所定深さまで掘削して前記支持杭をさらに深く打込んだ後、前記トラス枠上に桁受及び桁を順次固定し、該桁上に覆工板を敷設することを特徴とするトラス枠を用いた仮設桟橋の施工方法。A truss frame composed of a vertical member, a horizontal member, and a diagonal member connecting these intersections is arranged at a predetermined height from the sea surface or land surface, and a fixed pile is driven along a guide pipe provided on the truss frame. Temporarily fixing a truss frame to the fixed pile, then driving a support pile made of a steel pipe into the ground into the guide pipe, inserting a down-the-hole hammer into the steel pipe and excavating to a predetermined depth to further support the support pile. A method of constructing a temporary pier using a truss frame, comprising: after deeply driving, sequentially fixing a girder support and a girder on the truss frame, and laying a lining plate on the girder. 海上の所定位置に縦材と横材とこれらの交点同士を繋ぐ斜材とからなるトラス枠を載せた台船を回航し、該台船上のトラス枠に設けられたガイド管に沿って固定杭を打設し、次いで該トラス枠を吊り上げて前記台船をトラス枠の下部から移動させた後、該トラス枠を所定高さ位置にて前記固定杭に仮固定し、その後前記ガイド管内に鋼管からなる支持杭を海底の支持層まで打込み、該鋼管内にダウンザホールハンマを挿入して所定深さまで掘削して前記支持杭をさらに深く打込んだ後、前記トラス枠上に桁受及び桁を順次固定し、該桁上に覆工板を敷設することを特徴とするトラス枠を用いた仮設桟橋の施工方法。Cruise a barge on which a truss frame composed of a vertical member, a horizontal member and a diagonal member connecting these intersections is mounted at a predetermined position on the sea, and fix the fixed pile along a guide pipe provided on the truss frame on the barge. After the truss frame is lifted and the barge is moved from the lower part of the truss frame, the truss frame is temporarily fixed to the fixed pile at a predetermined height position, and then the steel pipe is inserted into the guide pipe. Driving a support pile consisting of a support layer on the seabed, inserting a down-the-hole hammer into the steel pipe, excavating the steel pile to a predetermined depth and driving the support pile further deeply, and sequentially placing a girder support and a girder on the truss frame. A method for constructing a temporary pier using a truss frame, wherein the pier is fixed and a lining plate is laid on the girder. 海上に自己昇降式台船を配置し、該自己昇降式台船を基準とした位置測定により前記トラス枠の位置決めを行うとともに、該自己昇降式台船上に配置されたクレーンを使用して前記固定杭及び支持杭の打設を行うことを特徴とする請求項2記載のトラス枠を用いた仮設桟橋の施工方法。A self-elevating barge is placed on the sea, the truss frame is positioned by position measurement with reference to the self-elevating barge, and the fixed using a crane arranged on the self-elevating barge The method for constructing a temporary pier using a truss frame according to claim 2, wherein the pile and the support pile are driven. 縦材と横材とこれらの交点同士を繋ぐ斜材とからなるトラス枠を陸上に設置したクレーンで吊下して陸上又は海上の所定位置に配置し、該吊下されたトラス枠に設けられたガイド管に沿って固定杭を打設し、次いで該トラス枠を所定高さ位置にて前記固定杭に仮固定し、その後前記ガイド管内に鋼管からなる支持杭を地盤に打込み、該鋼管内にダウンザホールハンマを挿入して所定深さまで掘削して前記支持杭をさらに深く打込んだ後、前記トラス枠上に桁受及び桁を順次固定し、該桁上に覆工板を敷設することを特徴とするトラス枠を用いた仮設桟橋の施工方法。A truss frame composed of a vertical member, a horizontal member, and a diagonal member connecting these intersections is suspended by a crane installed on land and arranged at a predetermined position on land or at sea, and is provided on the suspended truss frame. A fixed pile is driven along the guide pipe, and the truss frame is temporarily fixed to the fixed pile at a predetermined height position. Thereafter, a support pile made of a steel pipe is driven into the ground in the guide pipe, and After inserting a down-the-hole hammer into the hole and excavating it to a predetermined depth and driving the support pile further deeply, sequentially fixing the girder support and the girder on the truss frame, and laying a lining plate on the girder. Construction method of temporary pier using truss frame which is characteristic.
JP2003080391A 2003-03-24 2003-03-24 Method of constructing temporary landing bridge by using truss frame Pending JP2004285735A (en)

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CN102152038A (en) * 2011-04-18 2011-08-17 武船重型工程有限公司 Installation method of K brace of steel pipe truss arch
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CN107313355A (en) * 2017-08-18 2017-11-03 中国十七冶集团有限公司 A kind of steel trestle construction method waterborne
CN110565531A (en) * 2019-08-29 2019-12-13 成都天府轨谷科技有限公司 Construction channel structure and installation method
CN111424557A (en) * 2020-04-21 2020-07-17 中铁大桥局第七工程有限公司 A construction passageway of can leveling for steel purlin arched bridge tie member
JP2020159162A (en) * 2019-03-28 2020-10-01 株式会社奥村組 Temporary structure and construction method thereof
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JP2007138388A (en) * 2005-11-14 2007-06-07 Kouchi Marutaka:Kk Tsunami evacuation facility and its construction method
JP2012102574A (en) * 2010-11-11 2012-05-31 Jfe Engineering Corp Construction method of artificial ground on water
CN102152038A (en) * 2011-04-18 2011-08-17 武船重型工程有限公司 Installation method of K brace of steel pipe truss arch
CN102152038B (en) * 2011-04-18 2013-12-18 武船重型工程股份有限公司 Installation method of K brace of steel pipe truss arch
KR101077820B1 (en) 2011-05-11 2011-11-03 박명옥 Temporary bride construction method using module member
KR101742283B1 (en) * 2015-07-14 2017-06-23 주식회사 영진스틸 Temporary bridge construction methode
CN107313355A (en) * 2017-08-18 2017-11-03 中国十七冶集团有限公司 A kind of steel trestle construction method waterborne
CN107313355B (en) * 2017-08-18 2019-03-12 中国十七冶集团有限公司 A kind of steel trestle construction method waterborne
JP2020159162A (en) * 2019-03-28 2020-10-01 株式会社奥村組 Temporary structure and construction method thereof
JP7148080B2 (en) 2019-03-28 2022-10-05 株式会社奥村組 Temporary structure and its construction method
CN110565531A (en) * 2019-08-29 2019-12-13 成都天府轨谷科技有限公司 Construction channel structure and installation method
CN110565531B (en) * 2019-08-29 2024-04-16 成都天府轨谷科技有限公司 Construction channel structure and installation method
CN111424557B (en) * 2020-04-21 2021-08-10 中铁大桥局第七工程有限公司 A construction passageway of can leveling for steel purlin arched bridge tie member
CN111424557A (en) * 2020-04-21 2020-07-17 中铁大桥局第七工程有限公司 A construction passageway of can leveling for steel purlin arched bridge tie member
CN114808660A (en) * 2022-03-31 2022-07-29 中国人民解放军92228部队 Offshore self-propelled quick lap landing trestle device based on dynamic positioning
CN114808660B (en) * 2022-03-31 2023-10-27 中国人民解放军92228部队 Near-shore self-propelled quick lap-joint trestle device based on dynamic positioning
WO2024021426A1 (en) * 2022-07-26 2024-02-01 中国港湾工程有限责任公司 Fully staged steel trestle and construction method therefor

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