JPS60159224A - Method of installing caisson - Google Patents

Method of installing caisson

Info

Publication number
JPS60159224A
JPS60159224A JP1212384A JP1212384A JPS60159224A JP S60159224 A JPS60159224 A JP S60159224A JP 1212384 A JP1212384 A JP 1212384A JP 1212384 A JP1212384 A JP 1212384A JP S60159224 A JPS60159224 A JP S60159224A
Authority
JP
Japan
Prior art keywords
caisson
concrete
underwater
foundation
underwater concrete
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.)
Granted
Application number
JP1212384A
Other languages
Japanese (ja)
Other versions
JPH0379487B2 (en
Inventor
Kazuhiro Koshiro
小城 一廣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toa Corp
Original Assignee
Toa Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toa Corp filed Critical Toa Corp
Priority to JP1212384A priority Critical patent/JPS60159224A/en
Publication of JPS60159224A publication Critical patent/JPS60159224A/en
Publication of JPH0379487B2 publication Critical patent/JPH0379487B2/ja
Granted legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00Caissons; Construction or placing of caissons
    • E02D23/02Caissons able to be floated on water and to be lowered into water in situ

Abstract

PURPOSE:To improve working efficiency, by a method wherein a caisson is sunk for installation on a levelling foundation in water with underwater concrete located therebetween in a condition in which the concrete is before curing. CONSTITUTION:Underwater concrete 4 is placed in a position, where a caisson 1 is installed on a levelling foundation 3, by guiding the concrete through a tremie 9 extending from an underwater concrete plant ship 5 with the aid of a diver 6 in a manner that the concrete is placed up to a level where the unevenness on the surface of the foundation 3 is concealed. After the caisson 1 is tugged to a site by a tugging ship before the concrete 4 is cured, the caisson 1 is sunk for installation on the foundation 3. Thereafter, overlay stones 8 are placed around the caisson 1. After the concrete 4 is previously placed in a netty bag body placed on the bottom of the caisson 1, the caisson 1 may be sunk for installation.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は防波堤等を築造する際に水中に構築された捨石
基礎上に沈設されるケーソンの据付方法に関するもので
ある。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for installing a caisson that is sunk on a rubble foundation constructed underwater when constructing a breakwater or the like.

〔従来技術〕[Prior art]

従来、防波堤を築造する際には、捨石基礎をその予定さ
れる水中に構築し、その上に、ケーソンやコンクリート
ブロック、またはセルラーブロック等によシ上部工を構
築する混成堤と称する構造体が経済的であり広く採用さ
れている。
Conventionally, when constructing a breakwater, a structure called a hybrid levee was constructed by constructing a rubble foundation in the planned water, and then constructing a superstructure using caissons, concrete blocks, cellular blocks, etc. on top of it. It is economical and widely adopted.

しかしながら、この場合、ケーソンを水平に沈設するた
めには、海中に投入された捨石を均らさねばならず、潜
水夫による作業となり、特に大水深の場合には能率も悪
く、かつその作業性も非常に悪いという問題がある。
However, in this case, in order to sink the caisson horizontally, the rubble thrown into the sea must be leveled, and this work is done by divers, which is inefficient and difficult to do, especially in deep water. The problem is that it is also very bad.

そこで、この捨石の均し作業を機械的に行なうことも可
能であるが、大規模な均し機械のため費用がかさむと共
に、信頼性に欠けるという欠点があった。
Therefore, it is possible to perform this work of leveling the rubble mechanically, but this has the drawbacks of being expensive and lacking in reliability due to the large-scale leveling machine.

〔発明の目的〕[Purpose of the invention]

そこで本発明は前記従来の混成堤の築造時の捨石均し作
業を省き、作業性の良いケーソンの据付方法を提供する
ことを目的としたものである。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method of installing a caisson with good workability by omitting the work of leveling the rubble during the construction of the conventional hybrid embankment.

〔発明の構成〕[Structure of the invention]

即ち、本発明のケーソンの据付方法は、水中に構築され
た捨石基礎上に、水中コノクリートをその硬化する前の
状態で介在させながらケーソンを沈設さ、せることを特
徴とするが、上記のケーソンが沈設される際に、その水
中コンクリートがケーソンの底面に装着された網状袋体
内に打設されていることも有効な方法である。
That is, the caisson installation method of the present invention is characterized by sinking the caisson on a rubble foundation constructed underwater while interposing underwater conocrete in a state before hardening. Another effective method is to place the underwater concrete into a mesh bag attached to the bottom of the caisson when the caisson is being sunk.

〔実施例〕〔Example〕

以下図面を参照して本発明のケーソン据付方法を適用し
た各実施例を説明するが、各実施例においてそれぞれ同
じ部品は同じ部品番号で示している。
Each embodiment to which the caisson installation method of the present invention is applied will be described below with reference to the drawings, and in each embodiment, the same parts are indicated by the same part numbers.

まず、第1図、第2図及び第3図の実施例1においては
、湖底G上の水中に構築された捨石基礎3上に海面Wに
浮上して曳航されてきたケーソン1を据付る際に、その
捨石基礎乙の上面のケーソン10据付 プラント船5よりトレミー管9を経て、潜水夫6が誘導
して水中コンクリート4を圧送または自然流下により打
設する。
First, in Embodiment 1 shown in FIGS. 1, 2, and 3, when installing the caisson 1 that has been floated to the sea surface W and towed onto the rubble foundation 3 constructed underwater on the lake bed G, Then, a diver 6 guides the caissons 10 on the top surface of the rubble foundation B from the plant ship 5 through the tremie pipe 9 and pours the underwater concrete 4 by force-feeding or gravity.

その際、水中コンクIJ − 1− 4は捨石基礎6の
堤表面の捨石の突出などによる凹凸がかくれるところ迄
打設し、この水中コンクリート4が硬化する前に第2図
のごとくケーソン1を曳船7により据付する位置まで曳
航し、その函室内に注水することにより沈設するが、こ
のケーソン1は捨石基礎6上に水中コンクリート4を介
在させながら沈設することになる。
At this time, the underwater concrete IJ-1-4 is placed until the unevenness caused by the protrusion of the rubble on the surface of the rubble foundation 6 is covered, and before the underwater concrete 4 hardens, the caisson 1 is placed as shown in Fig. 2. The caisson 1 is towed by a tugboat 7 to the installation position and is submerged by pouring water into its box chamber, and the caisson 1 is submerged on a rubble foundation 6 with underwater concrete 4 interposed therebetween.

その結果、第3図に示すごとく、水中コンクリート4は
捨石基礎6の堤表面にケーソン1本体の自重により圧着
され、表面の凹凸を埋め、表層■空隙を充填し、ケーソ
ン1と捨石基礎6との密着がはかれることになるが、上
記ケーソン1の沈設後にはその周囲に更に被覆石8の施
工を行ないケーン/1の据付作業が完了する。
As a result, as shown in Fig. 3, the underwater concrete 4 is pressed onto the embankment surface of the rubble foundation 6 by the weight of the caisson 1 body, filling in the unevenness of the surface, filling the voids in the surface layer, and bonding the caisson 1 and the rubble foundation 6 together. After the caisson 1 is sunk, a covering stone 8 is further constructed around the caisson 1, and the installation work of the cane 1 is completed.

次に、第4図から第15図までに示す実施例2において
は、実施例1と同様にケーソン1を捨石基礎3上に水中
コンクリート4を介在させながら沈設させる際に、その
水中コンクリート4をケーソン1の底面に第8図のごと
く装着した網状袋体2内に事前に打設するようにしてい
る。
Next, in the second embodiment shown in FIGS. 4 to 15, when the caisson 1 is sunk on the rubble foundation 3 with the underwater concrete 4 interposed, similar to the first embodiment, the underwater concrete 4 is It is placed in advance in a mesh bag 2 attached to the bottom of the caisson 1 as shown in FIG.

この網状袋(4−2は、ナイロン等の合成繊維製等から
なる比較的柔軟な構造に形成し、かつ、第9図に示す型
体とし、その内部に打設する水中コンクリート4の重量
に耐え得るような強度をもつものである。
This mesh bag (4-2) is formed into a relatively flexible structure made of synthetic fibers such as nylon, and has the shape shown in Fig. 9, and is designed to handle the weight of the underwater concrete 4 to be cast inside. It is strong enough to endure.

また、この網状袋体2の周囲上端は第10図及び第11
図に示す鋼製アングル12により固定すると共に、ケー
ソン1の築造時にケーソン1の底面周辺にもあらかじめ
ボルト締め鋼棒11を取り付けておき、これに網状袋体
2をとりつけた′i@製アファングル12押え板16及
びボルト14により取付けることにより、この網状袋体
2をケーソン1の底面に装着している。
Moreover, the upper end of the periphery of this mesh bag 2 is shown in FIGS. 10 and 11.
Afangle 12 manufactured by 'i@' is fixed by a steel angle 12 shown in the figure, and bolted steel rods 11 are also attached in advance around the bottom of the caisson 1 when the caisson 1 is constructed, and the mesh bag body 2 is attached to this. This mesh bag 2 is attached to the bottom surface of the caisson 1 by attaching it with a holding plate 16 and bolts 14.

なお、上記鋼製アングル12の装着部は第9図の網状袋
体2の周囲上端のa−d−e−h−aの部分である。
The mounting portion of the steel angle 12 is a portion a-d-e-h-a at the upper end of the periphery of the mesh bag 2 in FIG.

また、この網状袋(*2のたれ下り及び水中コンクリー
ト4の打設時の破損を防止するために、第9図のb−g
及びc−fの部分には、第12図及び第13図に示すガ
スパイプ16を設けておき、ケーソン1の築造時に取り
付けておいた鋼棒15に、これらガスパイプ16で網状
袋体2の中央部の上端を吊下する。
In addition, in order to prevent this mesh bag (*2) from sagging and damage during pouring of underwater concrete 4,
Gas pipes 16 as shown in FIGS. 12 and 13 are provided in the portions of and c-f, and these gas pipes 16 are connected to the steel rods 15 that were attached when the caisson 1 was constructed. Hang the top end of the

なお、この網状袋体2のメツシュはlQmi内外のもの
を標準として使用するのが好ましい。
Note that it is preferable that the mesh of this net-like bag 2 be used as a standard mesh of lQmi or outside.

そこで、上記網状袋体2をその底面に装着されたケーソ
ン1は曳き船7で捨石基礎6上に第4図に示すように曳
航され、第5図のごとくその据付位置で停止させた後、
第6図に示すように、水中コンクリートプラント船5よ
シトレミー管9を経て水中コンクリート4をあらかじめ
網状袋体2内に打設する。
Then, the caisson 1 with the mesh bag 2 attached to its bottom is towed onto the rubble foundation 6 by a tugboat 7 as shown in FIG. 4, and stopped at its installation position as shown in FIG.
As shown in FIG. 6, underwater concrete 4 is placed in advance into the mesh bag 2 via an underwater concrete plant ship 5 and a sytlemy pipe 9.

上記の水中コンクリート4の打設の際には、第14図及
び第15図に示すごとく、ケーソン1の築造時にその底
部にあらかじめ取付けた・くルブ付のコンクリート充填
パイプ17を使用してケーソン1が傾かないような考慮
をしながら行なわれるものである。
When pouring the above-mentioned underwater concrete 4, as shown in FIGS. 14 and 15, the concrete filling pipe 17 with a groove, which was previously attached to the bottom of the caisson 1 when it was constructed, is used to place the concrete in the caisson 1. This is done with consideration given to ensuring that the situation is not tilted.

そこで、水中コンクリート4の打設が終了したら、その
水中コノクリート4の硬化前に園内に注水して捨石基礎
6上に沈設させれば、網状袋体2内に充填された水中コ
ンクリート4を介在させながらケーソン1はその自重に
より捨石基礎3の板表面に水中コンクリート4を圧着さ
せ、実施例1と同様にケーソン1と捨石基礎とが密着す
る。
Therefore, once the underwater concrete 4 has been placed, if water is poured into the garden before the underwater conocrete 4 hardens and the concrete is deposited on the rubble foundation 6, the underwater concrete 4 filled in the mesh bag 2 can be interposed. However, the caisson 1 presses the underwater concrete 4 onto the plate surface of the rubble foundation 3 by its own weight, and as in the first embodiment, the caisson 1 and the rubble foundation are brought into close contact.

なお、この実施例2はケーソン1の混成堤構築の計画水
深が大きい場合、または湖底の流れ等の影響が大きい場
合、更にはケーン/1の形状が犬きく、水中コ/りII
−ト4 O打設量の大きな場合に特に有効である。
This Embodiment 2 is suitable for cases where the planned water depth for constructing a hybrid dyke for caisson 1 is large, or when the influence of the current on the lake bottom is large, or when the shape of cane/1 is too sharp, or when underwater co/II is used.
-G4 O This is particularly effective when the amount of pouring is large.

また、本発明で使用される水中コンクリート4としては
、例えば特開昭57−123850 、特開昭58−6
9760に示°されている水中でセメント、砂及び骨材
が分離しない従来一般に使用されている水中コンクリー
トを1吏用することができる。
Further, as the underwater concrete 4 used in the present invention, for example, Japanese Patent Application Laid-open No. 57-123850, Japanese Patent Laid-Open No. 58-6
9760, which is a commonly used underwater concrete in which cement, sand and aggregate do not separate in water, can be used.

〔発明の効果〕〔Effect of the invention〕

従って、本発明のケーン/の据付方法を採用すれば、ケ
ーソンと捨石基礎の板表面との密着が、それらの間に介
在される水中コンクリートによりa好となり、その結果
、従来、ケーソン混合板の構築に不可欠とされてきた捨
石均し作業を全く省略可能になり、多数の潜水夫を削減
することができると共に、大規模な均し機械も必要とし
ないので、経済的にケーソン混合板を構築でき、更にそ
の工期も大幅に短縮することができるという数多くの利
点がある。
Therefore, if the cane/cane installation method of the present invention is adopted, the adhesion between the caisson and the board surface of the rubble foundation will be improved by the underwater concrete interposed between them. It is now possible to completely omit the rubble leveling work that has been considered indispensable for construction, reducing the number of divers, and eliminating the need for large-scale leveling machines, making it possible to construct caisson mixed plates economically. It has many advantages, such as being able to significantly shorten the construction period.

【図面の簡単な説明】[Brief explanation of drawings]

、第1図、第2図及び第3図は本発明の実施例1におけ
るケーソンの据付方法を説明する一連の説明図、第4図
、第5図、第6図及び第7図は実施例2におけるケーソ
ンの据付方法を説明する一連の説明図、第8図は第4図
のケーソンの拡大斜視図、第9図は第8図の網状装本の
斜視図、第10図は第9図の網状袋体の周囲上端を固定
する鋼製アングル部分の拡大斜視図、第11図は第10
図の鋼製アングルのケーソンに取付けた状態を示す断面
図、第12図は第9図の網状袋体の中央部を吊下するガ
スパイプの拡大斜視図、第13図は第12図のガスパイ
プのケーソンに取付けた状態を示す断面図、第14図及
び第15図は第6図の水中コンクリート打設の手順を説
明する一連の断面図である。 1・・・ケーソン、2・・・網状袋体、6・・・捨石基
礎、4・・・水中コンクリート。 代理人 弁理士 小 川 信 − 弁理士 野 口 賢 照 弁理士 斎 下 和 彦 第1図 第8図 第9図 @12図 第13図
, FIG. 1, FIG. 2, and FIG. 3 are a series of explanatory views explaining the caisson installation method in Embodiment 1 of the present invention, and FIG. 4, FIG. 5, FIG. 6, and FIG. 8 is an enlarged perspective view of the caisson in FIG. 4, FIG. 9 is a perspective view of the mesh binding in FIG. 8, and FIG. Figure 11 is an enlarged perspective view of the steel angle part that fixes the upper edge of the mesh bag.
Fig. 12 is an enlarged perspective view of the gas pipe suspending the central part of the mesh bag shown in Fig. 9, and Fig. 13 is a cross-sectional view showing the steel angle shown in the figure attached to the caisson. 14 and 15 are a series of sectional views illustrating the underwater concrete placement procedure shown in FIG. 6. 1...Caisson, 2...Mesh bag, 6...Rubble foundation, 4...Underwater concrete. Agent Patent Attorney Shin Ogawa - Patent Attorney Masaru Noguchi Patent Attorney Kazuhiko Saishita Figure 1 Figure 8 Figure 9 @ Figure 12 Figure 13

Claims (1)

【特許請求の範囲】 1、 水中に構築された捨石基礎上に、水中コンクリー
トをその硬化する前の状態で介在させながらケーソンを
沈設させることを特徴とするケーソンの据付方法。 Z 水中に構築された捨石基礎上に、水中コンクリート
をその硬化する前の状態で介在させながらケーソンを沈
設させる際に、その水中コンクIJ )がケーソンの底
面に装着された網状袋体内に打設されている特許請求の
範囲第1項記載のケーソンの据付方法。
[Scope of Claims] 1. A method for installing a caisson, which comprises sinking the caisson onto a rubble foundation built underwater, with underwater concrete interposed in a state before it hardens. Z When the caisson is submerged on the rubble foundation built underwater, with the underwater concrete interposed in its unhardened state, the underwater concrete (IJ) is poured into the mesh bag attached to the bottom of the caisson. A method for installing a caisson according to claim 1.
JP1212384A 1984-01-27 1984-01-27 Method of installing caisson Granted JPS60159224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1212384A JPS60159224A (en) 1984-01-27 1984-01-27 Method of installing caisson

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1212384A JPS60159224A (en) 1984-01-27 1984-01-27 Method of installing caisson

Publications (2)

Publication Number Publication Date
JPS60159224A true JPS60159224A (en) 1985-08-20
JPH0379487B2 JPH0379487B2 (en) 1991-12-19

Family

ID=11796759

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1212384A Granted JPS60159224A (en) 1984-01-27 1984-01-27 Method of installing caisson

Country Status (1)

Country Link
JP (1) JPS60159224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62273327A (en) * 1986-05-21 1987-11-27 Ohbayashigumi Ltd Set caisson work

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52126908A (en) * 1976-04-17 1977-10-25 Dekotsupu Enjiniyaringu Kk Method of horizontally installing preecast concrete foundation in building preefabricated structure
JPS5673721U (en) * 1979-11-06 1981-06-17
JPS58150629A (en) * 1982-03-03 1983-09-07 Penta Ocean Constr Co Ltd Construction of caisson levee

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52126908A (en) * 1976-04-17 1977-10-25 Dekotsupu Enjiniyaringu Kk Method of horizontally installing preecast concrete foundation in building preefabricated structure
JPS5673721U (en) * 1979-11-06 1981-06-17
JPS58150629A (en) * 1982-03-03 1983-09-07 Penta Ocean Constr Co Ltd Construction of caisson levee

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62273327A (en) * 1986-05-21 1987-11-27 Ohbayashigumi Ltd Set caisson work
JPH0472931B2 (en) * 1986-05-21 1992-11-19 Obayashi Constr Co Ltd

Also Published As

Publication number Publication date
JPH0379487B2 (en) 1991-12-19

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