JPS5836684B2 - Switch - Google Patents
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- Publication number
- JPS5836684B2 JPS5836684B2 JP50129068A JP12906875A JPS5836684B2 JP S5836684 B2 JPS5836684 B2 JP S5836684B2 JP 50129068 A JP50129068 A JP 50129068A JP 12906875 A JP12906875 A JP 12906875A JP S5836684 B2 JPS5836684 B2 JP S5836684B2
- Authority
- JP
- Japan
- Prior art keywords
- well
- formwork
- cylindrical
- water stop
- pier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【発明の詳細な説明】
本発明は水中における橋脚の構築方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of constructing a bridge pier underwater.
従来の水中における橋脚の構築方法では鋼矢板などによ
る締切工により、または築島などによつて流水が作業現
場に流入するのを防止している。In conventional methods of constructing bridge piers underwater, running water is prevented from flowing into the work site by cofferdams made of steel sheet piles or by built-in islands.
第１図は上記締切工による従来の構築方法を示したもの
である。FIG. 1 shows a conventional construction method using the above-mentioned cofferdam.
この方法は、まず鋼矢板ａなどで締切工を行ない、その
囲堰内で基礎用ウエルｂおよび橋脚基部用ウエルＣを沈
設し、該基部用ウエルＣの底部に蓋ｄをしかつ橋脚の型
枠ｅ（図示せず）を組み、それらによって形成された中
空部にコンクリートを打設し、コンクリートが固化した
後に脱型し、さらに上記鋼矢板ａを撤去するものである
。In this method, a cofferdam is first constructed using steel sheet piles a, etc., a foundation well b and a pier base well C are sunk inside the weir, a lid d is placed on the bottom of the base well C, and the pier shape is A frame e (not shown) is assembled, concrete is poured into the hollow space formed by the frame e, and after the concrete has solidified, it is demolded, and the steel sheet pile a is removed.
本発明は上記従来方法における鋼矢板などによる締切工
およびその撤去作業をなくシ、さらに型枠の組付け、取
外しをなくシ、もって工期の短縮、工事費の節減をはか
った水中における橋脚の構築方法を提供するものであり
、その特徴とするところは、基礎用ウエル、橋脚基部用
ウエル、円筒形型枠および止水用ウエルを順次沈設し、
さらに上記止水用ウエル内の上記円筒形型枠上に型枠用
円筒コンクリート管を配設し、それらによって形成され
た中空部に鉄筋を配してコンクリートを打設し、次いで
上記止水用ウエルを撤去することにある。The present invention eliminates the cofferdam using steel sheet piles and the like and its removal in the conventional method, and also eliminates the assembly and removal of formwork, thereby shortening the construction period and construction costs for constructing underwater bridge piers. The method is characterized by: sequentially depositing a foundation well, a pier base well, a cylindrical formwork, and a water stop well;
Furthermore, a cylindrical concrete pipe for formwork is placed on the cylindrical formwork in the water stop well, reinforcing bars are placed in the hollow space formed by the pipes, and concrete is poured, and then concrete is poured into the hollow part formed by the pipes. The purpose is to remove the well.
以下図面に示した実施例を参照しながら本発明を説明す
る。The present invention will be described below with reference to embodiments shown in the drawings.
本発明に係る水中における橋脚の構築方法は、第２図に
示したようにまず基礎用ウエル１、続いて橋脚基部用ウ
エル２、円筒形型枠３および止水用ウエル４を順次沈設
する。In the underwater construction method of a pier according to the present invention, as shown in FIG. 2, first, a foundation well 1, then a pier base well 2, a cylindrical formwork 3, and a water stop well 4 are sequentially deposited.
上記工程において、図示していないが、各部材間にゴム
パッキンなどを配設して止水を充分に行なう。In the above steps, although not shown, a rubber packing or the like is provided between each member to sufficiently shut off water.
また基礎用ウエル１および橋脚基部用ウエル２にはＰＣ
鋼棒５を挿貫し、それらの部材にブレストレツシングを
施し、ＰＣ鋼棒５の上部を円筒形型枠３内で定着する。In addition, PC is installed in foundation well 1 and pier base well 2.
The steel rod 5 is inserted, those members are subjected to breast stressing, and the upper part of the PC steel rod 5 is fixed within the cylindrical formwork 3.
さらにまた止水用ウェル４には各ウエル４間を強固に圧
着するための鋼棒６を挿貫し、その下端を円筒形型枠３
内で袋ナット７等によって定着している。Furthermore, a steel rod 6 is inserted into the water stop well 4 for firmly crimping between the wells 4, and its lower end is inserted into the cylindrical formwork 3.
It is fixed inside with a cap nut 7 or the like.
なお、図において８は定着用ナット、９はカブラーであ
る。In the figure, 8 is a fixing nut and 9 is a coupler.
次いで、上記止水用ウエル４によって形威される中空部
４′において上記円筒形型枠３の上に型枠用円筒コンク
リート管１０を配設する。Next, a cylindrical concrete pipe 10 for formwork is placed above the cylindrical formwork 3 in the hollow portion 4' formed by the water stop well 4.
型枠用円筒コンクリート管１０は、円筒形型枠３の通し
孔１２′とほぼ同軸的に配設する。The cylindrical concrete pipe 10 for formwork is arranged substantially coaxially with the through hole 12' of the cylindrical formwork 3.
このようにして型枠用円筒コンクリート管１０を配設す
るとともに上記橋脚基部用ウエル２の底部に蓋１１をし
、これらによって形成される中空部１２（図において斜
線部）に鉄筋（図示せず）を配してコンクリートを打設
する。In this way, the cylindrical concrete pipe 10 for the formwork is arranged, a lid 11 is placed on the bottom of the well 2 for the pier base, and a reinforcing bar (not shown) is placed in the hollow part 12 (shaded part in the figure) formed by these. ) and pour concrete.
ここで橋脚基部用ウエル２は内部に段１３を設け、この
段に蓋１１を載置するようにしている。Here, the pier base well 2 is provided with a step 13 inside, and the lid 11 is placed on this step.
また円筒形型枠３は金属製で橋脚の基部の主要部を成形
するためのものであり、上記通し孔１２′の周囲上面に
上記型枠用円筒コンクリート管１０の載置部１２“を備
える。The cylindrical formwork 3 is made of metal and is used to form the main part of the base of the pier, and is provided with a mounting part 12'' for the formwork cylindrical concrete pipe 10 on the upper surface around the through hole 12'. .
型枠用円筒コンクリート管１０は、ヒューム管を順次連
結し、その肉厚部に挿貫したＰＣ鋼棒１４を緊張して管
１０にブレストレツシングを施す。The cylindrical concrete pipe 10 for formwork is made by sequentially connecting Hume pipes, and applying tension to the pipe 10 by tensioning a PC steel rod 14 inserted into the thick part of the Hume pipe.
なお図において１５は定着ナット、１６はカブラーであ
る。In the figure, 15 is a fixing nut, and 16 is a coupler.
次いで鋼棒６を回転して袋ナット７から外して止水用ウ
エル４を撤去し、作業は完了する。Next, the steel rod 6 is rotated and removed from the cap nut 7, and the water stop well 4 is removed, completing the work.
施工後、型枠用円筒コンクリート管１０は、橋脚の一部
を構成することとなる。After construction, the cylindrical concrete pipe 10 for formwork will constitute a part of the bridge pier.
本発明に係る橋脚の構築方法は、上記のように締切工お
よびその撤去並びに型枠の組付けおよびその取外し作業
がないので工期の短縮、工事費の節減に極めて効を奏す
る。The method for constructing a bridge pier according to the present invention is extremely effective in shortening the construction period and reducing construction costs because there is no need for cofferdams and their removal, and formwork assembly and removal as described above.
また上記止水用ウエルは、上方から単に積み重ねられて
行くだけであり、引き上げも容易なので、傷みが少なく
再利用が可能である。Furthermore, the water stop wells are simply stacked from above and can be easily pulled up, so they are less likely to be damaged and can be reused.
第１図は従来工法を示した縦断面図、第２図は本発明に
係る橋脚の構築方法を示した縦断面図である。
１・・・・・・基礎用ウエル、２・・・・・・橋脚基部
用ウエル、３・・・・・・円筒形型枠、４・・・・・・
止水用ウエル、１１・・・・・・蓋、１２・・・・・・
中空部。FIG. 1 is a longitudinal sectional view showing a conventional construction method, and FIG. 2 is a longitudinal sectional view showing a method of constructing a bridge pier according to the present invention. 1... Well for foundation, 2... Well for pier base, 3... Cylindrical formwork, 4...
Water stop well, 11... Lid, 12...
Hollow part.
Claims (1)
止水用ウエルをこれら各部材間に止水工事を施しつつ順
次に沈設し、上記止水用ウエルを上記円筒形型枠の上面
にボルト、ナットによって固定する工程と、上記橋脚基
部用ウエルの底部に蓋をし、上記沈設した止水用ウエル
によって形成される中空部において上記円筒形型枠の上
面に設けた載置部に該円筒形型枠の上面の通し孔とほぼ
同軸的に型枠用円筒コンクリート管を配設する工程と、
型枠用円筒コンクリート管、円筒形型枠および橋脚基部
用ウエル内に形成された中空部に鉄筋を配してコンクリ
ートを打設する工程と、次いで上記止水用ウエルを撤去
する工程とを順次に行なうことを特徴とする水中におけ
る橋脚の構築方法。1. Sink the foundation well, pier base well, cylindrical formwork, and water stop well in sequence while performing water stop work between these parts, and bolt the water stop well to the top surface of the cylindrical formwork. , a step of fixing with a nut, and placing a lid on the bottom of the pier base well, and placing the cylindrical cylinder on a mounting part provided on the top surface of the cylindrical form in the hollow part formed by the sunken water stop well. A step of arranging a cylindrical concrete pipe for the formwork almost coaxially with the through hole on the top surface of the formwork;
The process of placing reinforcing bars in the hollow parts formed in the cylindrical concrete pipe for formwork, the cylindrical formwork, and the well for the pier base and pouring concrete, followed by the process of removing the water stop well, are carried out sequentially. A method for constructing a bridge pier underwater, characterized by the following steps:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50129068A JPS5836684B2 (en) | 1975-10-27 | 1975-10-27 | Switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50129068A JPS5836684B2 (en) | 1975-10-27 | 1975-10-27 | Switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5252448A JPS5252448A (en) | 1977-04-27 |
| JPS5836684B2 true JPS5836684B2 (en) | 1983-08-11 |
Family
ID=15000279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50129068A Expired JPS5836684B2 (en) | 1975-10-27 | 1975-10-27 | Switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5836684B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5559205A (en) * | 1978-10-26 | 1980-05-02 | Nippon Hume Pipe | Method of building bridge pier |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416646B2 (en) * | 1973-04-25 | 1979-06-23 |
-
1975
- 1975-10-27 JP JP50129068A patent/JPS5836684B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5252448A (en) | 1977-04-27 |
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