JPS62273327A - Set caisson work - Google Patents
Set caisson workInfo
- Publication number
- JPS62273327A JPS62273327A JP11485986A JP11485986A JPS62273327A JP S62273327 A JPS62273327 A JP S62273327A JP 11485986 A JP11485986 A JP 11485986A JP 11485986 A JP11485986 A JP 11485986A JP S62273327 A JPS62273327 A JP S62273327A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- filling material
- filler
- ground
- 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
Links
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 38
- 238000010276 construction Methods 0.000 claims description 17
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 11
- 238000009415 formwork Methods 0.000 abstract description 9
- 239000000945 filler Substances 0.000 abstract description 7
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 206010019233 Headaches Diseases 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、設置ケーソン工法に関し、特に、箱状枠と
支持地盤とを結合する際に使用される中詰材の改良に関
する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an installation caisson construction method, and particularly to an improvement in the filling material used when joining a box-shaped frame and supporting ground.
（従来の技術）
周知のように、例えば橋梁下部工等水海中に溝築される
基礎の構築方法の一種として、設置ケーソン工法がある
。(Prior Art) As is well known, one type of construction method for foundations constructed in trenches underwater, such as bridge substructures, is the installation caisson method.
設置ケーソン工法は、岸壁上あるいはドライドツク内で
予め組み立てられた底版を有する箱状鋼製枠を基礎の構
築現場まで曳航によって運搬し、これを支持地盤（岩盤
、砂礫地盤、捨石、コンクリート）の上に設置する方法
である。In the installation caisson construction method, a box-shaped steel frame with a bottom plate that has been preassembled on a quay or in a dry dock is towed to the foundation construction site, and then placed on top of the supporting ground (rock, gravel, rubble, concrete). This is the method of installing it.
この種の工法では、鋼製枠と支持地盤との結合を高める
ために、底版と支持地盤との隙間にコンクリート、モル
タル、セメントミルクなどの中詰材を注入することも行
われているが、特に、この中詰材を注入する時に以下に
説明する問題があった。In this type of construction method, filling materials such as concrete, mortar, and cement milk are injected into the gap between the bottom slab and the supporting ground in order to improve the bond between the steel frame and the supporting ground. In particular, when injecting this filling material, there were problems as described below.
（発明が解決しようとする問題点）
すなわち、従来の設置ケーソン工法では、コンクリート
、モルタル、セメントミルク等の中詰材を隙間に注入す
るときには、中詰材をポンプで圧送し、かつこれらの水
海中への流出を防止するために、隙間の周囲をシールす
るとともに、隙間から水海面上に達する空気法用のドレ
ーンパイプを設置し、中詰材の圧入によってドレーンパ
イプから隙間内の空気ないしは水が排出されるようにし
て行われていた。(Problem to be solved by the invention) In other words, in the conventional installation caisson construction method, when injecting filler materials such as concrete, mortar, and cement milk into gaps, the filler materials are pumped and the water is pumped. To prevent leakage into the sea, seal the area around the gap, install a drain pipe for the air method that reaches above the sea surface from the gap, and press-fit filling material to drain the air or water in the gap from the drain pipe. It was done in such a way that it was discharged.
しかしながら、この様な注入方法では、隙間を完全に埋
めて良好な結合状態を１ｑようとすれば、注入圧を大き
くしなければならないが、注入圧を大きくすると底版に
その圧力が作用して５１ｔＪ枠が浮き上がるので、注入
圧を余り上げることが出来ず、その結果、鋼製枠と支持
地盤との強固な結合を得ることが困難であった。However, with this type of injection method, in order to completely fill the gap and achieve a good bond of 1q, the injection pressure must be increased; Since the frame floats up, the injection pressure cannot be increased too much, and as a result, it is difficult to obtain a strong bond between the steel frame and the supporting ground.
また、中詰材を圧入するためには、これが外部に洩れ出
すことがないようにシールは充分に行う必要があるが、
水中作業が極めて煩雑になるという問題もあった。Also, in order to press-fit the filling material, it is necessary to seal it sufficiently to prevent it from leaking outside.
There was also the problem that underwater work became extremely complicated.
この発明は、このような従来の問題点に鑑みてなされた
ものであって、その目的とするところは、Ｗ４製枠と支
持地盤との隙間にシールを設けなくても中詰材による水
海中の汚染が防止され、しかもこれらの間が強固に結合
できる設置ケーソン工法を提供することにある。This invention was made in view of these conventional problems, and its purpose is to prevent the use of filling materials in water or sea without providing a seal in the gap between the W4 frame and the supporting ground. An object of the present invention is to provide an installation caisson construction method that prevents contamination of the caisson and also allows a strong connection between the caisson and the caisson.
（問題点を解決するための手段）
上記目的を達成するために、この発明は、予め形成され
た底版を有する箱状枠を支持地盤上に設けた据付台に設
置した後に、前記底版と支持地盤との間に中詰材を注入
して、箱状枠を支持地盤に結合させる設置ケーソン工法
において、前記中詰材として粘着性流動促進剤が添加さ
れたコンクリートを用いることを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for installing a box-shaped frame having a pre-formed bottom plate on a mounting base provided on a supporting ground, and then attaching the bottom plate to the support base. In the installation caisson construction method in which a filling material is injected between the filling material and the ground to connect the box-shaped frame to the supporting ground, the method is characterized in that concrete to which an adhesive flow accelerator is added is used as the filling material.
（作用）
上記のように構成された設置ケーソン工法によれば、中
詰材として使用するコンクリートには、粘着性流動促進
剤が添加されおり、これが水や海水に洗われた場合にも
構成材料の分離がほとんど生じないので、拡散による汚
染が防止される一方、粘着性流動促進剤の添加により、
流動性が増し、且つセルフレベリング性を備えているの
で、加圧しなくても細かな間隙にも充填され、硬化した
ときに大きな強度が得られる。(Function) According to the installation caisson construction method configured as described above, an adhesive glidant is added to the concrete used as the filling material, and even if this is washed away by water or seawater, the constituent material Little separation occurs, preventing contamination by diffusion, while the addition of a viscous glidant
Because it has increased fluidity and self-leveling properties, it can fill even small gaps without applying pressure, and when it hardens, it has great strength.
（実施例）
以下、この発明の好適な実施例について添付図面を参照
にして詳細に説明する。(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図から第３図はこの発明にかかる設置ケーソン工法
の一実施例を示している。1 to 3 show an embodiment of the installation caisson construction method according to the present invention.
同図に示す設置ケーソン工法は、予め地上、例えば岸壁
、トライドッグ内などで形成された鋼製枠体１０を、設
置場所まで曳航し、これを沈設することにより水海中の
支持地盤１２上に設置した後に、枠体１０と支持地５Ｊ
１１２とを中詰材１４によって結合させる工法である。The installation caisson construction method shown in the same figure involves towing a steel frame 10 formed in advance on the ground, for example, on a quay wall or inside a tri-dog, to an installation location and sinking it onto a supporting ground 12 in the water. After installation, frame 10 and support ground 5J
112 by using a filling material 14.
この実施例では、上記鋼製枠体１０には、その上端から
下端に達する空気ないしは水抜き用のドレーンパイプ１
６．１６が複数本設けられるとともに、その底部には枠
体１０の下方を閉止する底版１０ａが固設されている。In this embodiment, the steel frame 10 has a drain pipe 1 for draining air or water that reaches from its upper end to its lower end.
A plurality of 6.16 are provided, and a bottom plate 10a that closes the lower part of the frame 10 is fixed to the bottom thereof.
支持地盤１２間の枠体１０の設置位置には、予め第１図
に示すように据付台１７が設置されている。At the installation position of the frame body 10 between the supporting ground 12, an installation stand 17 is installed in advance as shown in FIG.
据付台１７が設置されると枠体１０内には、海水を導入
してこれが徐々に降下され、第２図に示すように据付台
１７上に載置される。When the installation stand 17 is installed, seawater is introduced into the frame 10, and this is gradually lowered, and the frame body 10 is placed on the installation stand 17 as shown in FIG.
しかる後、第３図に示すように、据付台１７の外周に型
枠１８が設置される。Thereafter, as shown in FIG. 3, a formwork 18 is installed around the outer periphery of the installation stand 17.
この型枠１８は上下端が開口した中空体であって、その
断面は据付台１７よりも大ぎくなっている。The formwork 18 is a hollow body with open upper and lower ends, and its cross section is larger than the installation base 17.
そして、型枠１８が設置されると供給管１９を介して中
詰材１４が型枠１８内に注入され、中詰材１４には、粘
着性流動促進剤が添加されたコンクリートが使用される
。When the formwork 18 is installed, the filling material 14 is injected into the formwork 18 via the supply pipe 19, and concrete to which an adhesive glidant is added is used as the filling material 14. .
粘着性流動促進剤としては、例えば、セルロースエーテ
ル系の高分子粉末が使用され、粘着性流動促進剤をコン
クリートに添加する場合には、酸性溶液に促進剤を溶解
してスラリー状とした後に、所定の配合比のコンクリー
トに添加して混合すればよい。For example, a cellulose ether-based polymer powder is used as the adhesive glidant, and when adding the adhesive glidant to concrete, the accelerator is dissolved in an acidic solution to form a slurry, and then It can be added to concrete at a predetermined mixing ratio and mixed.
粘着性流動促進剤が添加された中詰材１４は、上方が開
口した型枠１８内に充填し、水ないしは海水によって洗
われたとしても、その拡散が極めて少なく、水海中を汚
染することがほとんどない。The filling material 14 to which the adhesive glidant has been added is filled into a formwork 18 with an open top, and even if it is washed with water or seawater, its diffusion is extremely small and there is no risk of contaminating the water or seawater. rare.
また、型枠１８内に充填されている中詰材１４は、流動
性が大きいのでセルフレベリング性が良好なため圧力を
加えなくても、−小さいヘッド圧があればｔｅｌ！Ｊ枠
体１０の底版１０ａと支持地盤１２間の間隙内に侵入し
、間隙を充分に埋める。In addition, the filling material 14 filled in the formwork 18 has high fluidity and has good self-leveling properties, so even if pressure is not applied, - if there is a small head pressure, tel! It penetrates into the gap between the bottom plate 10a of the J frame body 10 and the supporting ground 12, and fully fills the gap.
第５図は粘着性流動促進剤を添加したコンクリートと、
無添加のコンクリートのスランプ試験の結果を示してお
り、促進剤が添加されたコンクリートは最終スランプに
達するまでの時間が長く、この間は流動しているので良
好なセルフレベリング性を有している。Figure 5 shows concrete with adhesive glidant added,
The graph shows the results of a slump test for concrete without additives. Concrete with additives takes a long time to reach final slump, and during this time it is fluid, so it has good self-leveling properties.
さらに、第６図は粘着性流動促進剤を添加したコンクリ
ートと、無添加のコンクリートのブリージング量を測定
したグラフであって、同図からも明らかなように、促進
剤を単位セメントｆｆｌ （Ｃ）の０．３％以上添加す
るとブリージングは殆ど生じない。Furthermore, Fig. 6 is a graph measuring the amount of breathing of concrete to which a viscous glidant was added and concrete to which no viscous glidant was added. When 0.3% or more is added, breathing hardly occurs.
従って、粘着性流動促進剤を添加した中詰材１４を用い
れば、ブリージングの発生が殆どなく、このためレイタ
ンスの発生が可及的に抑制されるので底版１０ａと中詰
材１４とは極めて良好な状態で結合できる。Therefore, if the filling material 14 containing an adhesive glidant is used, there is almost no occurrence of breathing, and therefore the occurrence of laitance is suppressed as much as possible, so the relationship between the bottom plate 10a and the filling material 14 is extremely good. Can be combined in a state.
そして、中詰材１４は、ドレーンバイブ１６内にも侵入
するので、その侵入状態を確認すれば、鋼製枠体１０と
支持地！２１１２との間に介在する中詰材１４の状態も
判る。The filling material 14 also enters the drain vibe 16, so if you check the state of its entry, the steel frame 10 and the supporting material will be separated! The condition of the filling material 14 interposed between it and 2112 can also be seen.
この後に、中詰材１４は時間の経過によって硬化、鋼製
枠体１０と支持地盤１２とを結合させる。Thereafter, the filler material 14 hardens over time and joins the steel frame 10 and the supporting ground 12 together.
さて、以上のような方法でａＩＩ製枠体１０を設置する
この発明の設置ケーソン工法によれば、中詰材１４を加
圧することなく注入するので、ｍａ枠体１０の浮き上が
りを伴なうことながない。また、中詰材１４による水海
中の汚染を伴なうことなく枠体１０を支持地盤１２上に
強固に固定できる。Now, according to the installation caisson construction method of the present invention in which the aII frame 10 is installed in the manner described above, the filling material 14 is injected without applying pressure, so that the ma frame 10 is not lifted up. It's long. In addition, the frame body 10 can be firmly fixed onto the supporting ground 12 without contaminating the water or sea due to the filling material 14.
なお、上記実施例では、中込材１４を供給管１９を介し
て注入する方法を例示したが、供給管１９に代えてドレ
ーンバイブ１６を使用して注入することもでき、また、
中詰材１４を支持地盤１２上に予め設置した形枠１８内
に充填した後にｗ４製枠体１０を設置固定する方法でも
よい。In addition, in the above embodiment, the method of injecting the filling material 14 through the supply pipe 19 was exemplified, but it is also possible to inject using the drain vibe 16 instead of the supply pipe 19.
A method may also be used in which the W4 frame 10 is installed and fixed after filling the filling material 14 into the frame 18 that has been previously installed on the supporting ground 12.
第４図はこの発明の他の実施例を示しており、以下にそ
の特徴点についてのみ説明する。FIG. 4 shows another embodiment of the present invention, and only its features will be explained below.
この実施例では、上記型枠１８に代えて、支持地盤１２
に掘削形成された凹部２０を設けである。In this embodiment, instead of the formwork 18, supporting ground 12
A recess 20 is provided by excavating and forming.
この四部２０内には、上記実施例と同様に粘着性流動促
進剤を添加したコンクリートからなる中詰材１４を予め
充填するか、或いは、鋼製枠体１０を凹部２０内に設置
した後に、ドレーンバイブ１６ないしは供給管１９を介
して中詰材１４が注入される。The four parts 20 are filled in advance with the filling material 14 made of concrete to which an adhesive glidant is added as in the above embodiment, or after the steel frame 10 is installed in the recess 20, The filling material 14 is injected through the drain vibe 16 or the supply pipe 19.
このように構成した設置ケーソン工法によっても、上記
実施例と同じ効果が得られる。The same effect as the above embodiment can be obtained by the installation caisson construction method constructed in this way.
なお、上記実施例では設置ケーソンとして鋼製枠１０を
例示したが、ケーソンは鋼製に限定されることはなく、
例えば鉄筋コンクリートであってもよい。In addition, although the steel frame 10 was illustrated as the installation caisson in the above embodiment, the caisson is not limited to steel.
For example, it may be reinforced concrete.
また、ケーソンの設置個所も水海中に限定されず、地上
に掘削した孔部内にケーソンを設置する際にも適用でき
るし、沈埋工法にも応用できる。Furthermore, the location where the caisson is installed is not limited to underwater, but can also be applied when installing the caisson in a hole drilled on the ground, and can also be applied to a submerged method.
（発明の効果）
以上説明したように、この発明では、予め形成された箱
状鋼製枠を水海中の支持地盤上に設置した後にｍ製枠と
支持地盤とを中詰材によって結合させる設置ケーソン工
法において、前記中詰材として粘着性流動促進剤が添加
されたコンクリートを用いるので、中詰材の注入による
鋼製枠の浮き上がりがなく、しかも、中詰材による汚染
も防止できる。(Effects of the Invention) As explained above, in this invention, a pre-formed box-shaped steel frame is installed on the supporting ground in the water, and then the m-made frame and the supporting ground are connected with the filling material. In the caisson construction method, since concrete to which an adhesive glidant is added is used as the filling material, there is no lifting of the steel frame due to the injection of the filling material, and furthermore, contamination by the filling material can be prevented.
第１図から第３図はこの発明にかかる設置ケーソン工法
の一実施例を工程順に示したそれぞれの説明図、第４図
は同工法の他の実施例を示す説明図、第５図は本発明工
法に用いる中詰材のセルフレベリング性を測定したグラ
フ、第６図は同中詰材のブリージングを測定したグラフ
である。Figures 1 to 3 are explanatory diagrams showing one embodiment of the installation caisson construction method according to the present invention in the order of steps, Figure 4 is an explanatory diagram showing another embodiment of the same construction method, and Figure 5 is an illustration of the present invention. A graph measuring the self-leveling property of the filling material used in the invention method, and FIG. 6 is a graph measuring the breathing of the filling material.
Claims (1)
た据付台に設置した後に、該底版と該支持地盤との間に
中詰材を注入して、該箱状枠を該支持地盤に結合させる
設置ケーソン工法において、該中詰材として粘着性流動
促進剤が添加されたコンクリートを用いることを特徴と
する設置ケーソン工法。After installing a box-shaped frame having a pre-formed bottom plate on a mounting base provided on the supporting ground, filling material is injected between the bottom plate and the supporting ground, and the box-shaped frame is placed on the supporting ground. An installed caisson construction method characterized in that concrete to which an adhesive glidant is added is used as the filling material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11485986A JPS62273327A (en) | 1986-05-21 | 1986-05-21 | Set caisson work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11485986A JPS62273327A (en) | 1986-05-21 | 1986-05-21 | Set caisson work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62273327A true JPS62273327A (en) | 1987-11-27 |
| JPH0472931B2 JPH0472931B2 (en) | 1992-11-19 |
Family
ID=14648486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11485986A Granted JPS62273327A (en) | 1986-05-21 | 1986-05-21 | Set caisson work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62273327A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001073373A (en) * | 1999-09-02 | 2001-03-21 | Masami Fukuoka | Constructing method for retaining wall |
| JP2008075245A (en) * | 2006-09-19 | 2008-04-03 | Japan Bridge Engineering Center | Construction method for pedestal concrete |
| JP2009209577A (en) * | 2008-03-04 | 2009-09-17 | Chugoku Electric Power Co Inc:The | Marine structure and construction method for marine structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5948252A (en) * | 1982-09-09 | 1984-03-19 | Yamaha Motor Co Ltd | Small-sized snow car |
| JPS60159224A (en) * | 1984-01-27 | 1985-08-20 | Toa Harbor Works Co Ltd | Method of installing caisson |
-
1986
- 1986-05-21 JP JP11485986A patent/JPS62273327A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5948252A (en) * | 1982-09-09 | 1984-03-19 | Yamaha Motor Co Ltd | Small-sized snow car |
| JPS60159224A (en) * | 1984-01-27 | 1985-08-20 | Toa Harbor Works Co Ltd | Method of installing caisson |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001073373A (en) * | 1999-09-02 | 2001-03-21 | Masami Fukuoka | Constructing method for retaining wall |
| JP2008075245A (en) * | 2006-09-19 | 2008-04-03 | Japan Bridge Engineering Center | Construction method for pedestal concrete |
| JP4699320B2 (en) * | 2006-09-19 | 2011-06-08 | 財団法人 海洋架橋・橋梁調査会 | Construction method of pedestal concrete |
| JP2009209577A (en) * | 2008-03-04 | 2009-09-17 | Chugoku Electric Power Co Inc:The | Marine structure and construction method for marine structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0472931B2 (en) | 1992-11-19 |
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