JP3380341B2 - Repair method for floating structures - Google Patents
Repair method for floating structuresInfo
- Publication number
- JP3380341B2 JP3380341B2 JP25814994A JP25814994A JP3380341B2 JP 3380341 B2 JP3380341 B2 JP 3380341B2 JP 25814994 A JP25814994 A JP 25814994A JP 25814994 A JP25814994 A JP 25814994A JP 3380341 B2 JP3380341 B2 JP 3380341B2
- Authority
- JP
- Japan
- Prior art keywords
- floating
- air
- storage case
- air storage
- body structure
- 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 - Lifetime
Links
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、浮桟橋、台船、その他
の水上浮体構造物の調査や補修のための工法に関するも
のである。
【０００２】
【従来の技術】水上、特に海上に浮体構造物として配置
されている浮桟橋は、海水による侵食や電蝕によって補
修、あるいは調査が必要になってくる。例えば浮桟橋の
本体を鋼板で作ったものにおいては、他の手摺やポラー
ドなどにステンレススチールを用いると電蝕が起こり、
15mm厚の鋼板でも一年で穴が開く場合がある。そのため
に従来はダイバーによる水中作業を行なったり、浮桟橋
をクレーンで吊り上げたり、アンカーチェンや海底に打
込んで固定している支柱から解放してドックに移動させ
て補修、あるいは調査を行なっている。
【０００３】
【発明が解決しようとする課題】従来のこのようなダイ
バーによる水中作業は陸上作業に比べると作業能率や補
修結果が悪いし、経費も多くかかる難点がある。また、
溶接が水中では困難であるし、また、コンクリートは水
中養生が困難であるから、水上浮体構造物をクレーンで
吊り上げたり、ドックに移動させて作業を行う場合が多
い。その場合、前記難点が解決したり、作業能率や補修
結果は良好となるが、海上クレーンの費用や、移動費用
が多くかかる難点がある。
【０００４】
【課題を解決するための手段】本発明は水上浮体構造物
の補修あるいは調査に際して、該水上浮体構造物の水中
部に対して空気収容ケース及びその内部に浮揚方向に作
用する空気袋又は気密シールを施して、空気収容ケース
又は空気袋に送込む空気量の加減によって水上浮体構造
物の必要浮揚高さを確保したのち補修あるいは調査する
ことを特徴とする水上浮体構造物の補修工法である。
【０００５】前記空気袋の空気収容ケースは、一面が開
口の合板(ベニヤ板,コンパネ等)製壁面とその補強枠か
らなり、空気袋は、前記空気収容ケースの開口面と同じ
面が開口した袋体が好適である。これらは水上浮体構造
物が小規模のものの場合は単体で形成してもよいが、水
上浮体構造物が大規模な場合は複数個で浮上するに必要
なエアーの体積を確保するようにするとよい。
【０００６】
【作用】本発明は水上浮体構造物を現場で浮上させるの
で、水上浮体構造物の没水部の体積を計算し、浮上の必
要部分を確認し、その確認部分が浮上するだけのエアー
の体積を計算しさえすれば、用いる空気収容ケースの容
積が決まり、その容積に見合う空気収容ケースを合板製
壁面とその補強枠で作ると共にその内部へビニールシー
トを袋状にして用意するだけで、あとはその空気収容ケ
ースごと水中の水上浮体構造物の底面へ配備し、それに
エアーを吹込むだけで水上浮体構造物が浮き上がるので
作業が水上で出来る。空気収容ケースの全空気充填容積
の増減によって水上浮体構造物の浮上程度を決定できる
し、水上浮体構造物の必要浮上部位を空気収容ケースの
取付け位置によって決定できる。
【０００７】
【実施例】図１,２は水上浮体構造物１が浮桟橋(ポンツ
ーン)の例で、アンカーチェン２と繋留チェン12で移動
が規制されているものに本発明を実施している様子を示
すもので、(a)は平面図、(b)は側面図である。図１は通
常の浮桟橋の状況を示している。この浮桟橋の補修ある
いは調査に際して、図２のように、水上浮体構造物１の
水中部底面に対して複数の空気収容ケース３を取付けて
いる。空気収容ケース３はこの例では図５に示すように
内部に気密シールが施された箱体である。空気収容ケー
スは３×６の標準サイズの合板６枚により、サイズが1.
8m×1.8m×0.9mで内容積がほぼ2.9ｍ3のものが簡単にで
きる。
【０００８】この空気収容ケース３内にエアーコンプレ
ッサ10でそれぞれ空気を入れる。沖合が少しづつ浮上を
始めるとアンカーチェン２が張る場合があるのでチェン
を緩める。ここで浮桟橋の固定の必要がある場合には、
仮ロープをシンカー又はチェーンの途中に取付け固定す
る。目的の吃水まで浮上したところで、エアーの管理を
ダイバーで行う。この状態で補修工事を行う。補修は錆
びた付属品の交換や傷んだ浮桟橋本体のコンクリートに
よる補修、塗装等である。
【０００９】図３(a)(b)は、水上浮体構造物１が支柱４
によって支持された浮桟橋の例である。この場合、浮桟
橋は支柱４によって安定に支持されているので、空気収
容ケース３は浮桟橋の底面中央寄りに設けている。空気
収容ケース３はこの例では図６にみられる構造のもので
ある。この空気収容ケース３内には空気袋５が挿入され
ており、これに送込む空気量の加減によって水上浮体構
造物の必要浮揚高さを確保することができる。空気袋の
空気収容ケース３は下面が開口した安価な合板製壁面６
とその周囲を補強枠７が拘束するように設けられてお
り、空気袋は前記空気収容ケースの開口面と同じ一面が
開口した合成樹脂性袋体である。例えば、ポリオレフィ
ン系のフラットヤーンのフイルムラミネート、いわゆる
ブルーシートと称される野積みシートの内張りで簡単に
加工できる。空気袋５にエアーコンプレッサ10でそれぞ
れ空気を入れると浮桟橋が支柱４にしたがって上昇す
る。
【００１０】水上浮体構造物１は図４(a)(b)のように水
上に完全に浮き上げるタイプにすることもできる。その
場合、浮桟橋の底面に左右へ大きく突出させた梁８のＨ
型鋼が渡架されている。この梁の下方へ前記図５や図６
に示すような空気収容ケース６を多数設置すれば、水上
浮体構造物１が転倒することなく安定して完全させるこ
とができる。特に、上記合板製のもの50個を使用すれ
ば、自重100tonの浮桟橋を水面上に持上げることができ
る。
【００１１】合板製の空気収容ケースの製造の容易さと
強度を大にするためには、図７のように、コーナー部に
合成樹脂又はアルミ合金等の押出材で形成した補強部材
９を設けるようにすると、壁面６を構成する合板と補強
部材及びシール材11又は気密シートさえ準備しておけ
ば、現場で簡単に空気収容ケースの組立ができ、しかも
補強部材が高強度を発揮して安定な水上浮体構造物の浮
揚を可能にする。
【００１２】
【発明の効果】本発明によって、ダイバーによる水中作
業が陸上作業に比べると作業能率や補修結果が悪かった
り、経費も多くかかっていたのを解決した。また、溶接
が水中では困難であったのを水上でできるようにし、コ
ンクリートが水中養生で困難であった点も解決した。更
に、水上浮体構造物をクレーンで吊り上げたり、ドック
に移動させて作業を行う必要がなく、その場合の難点も
解決した。作業能率も補修結果も良好となり、多大な効
果が得られた。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for investigating and repairing floating piers, barges, and other floating structures. 2. Description of the Related Art Floating piers arranged as floating structures on water, especially on the sea, need to be repaired or investigated due to erosion or electrolytic corrosion caused by seawater. For example, in the case of the main body of the floating pier made of steel plate, if stainless steel is used for other handrails and poles, electrolytic corrosion occurs,
Even a steel plate with a thickness of 15 mm can make holes in a year. For this purpose, underwater work has been conventionally performed by divers, floating piers are lifted with cranes, anchor chains and struts that are driven into the sea floor and fixed are moved to the dock and repaired or investigated. . [0003] Conventional underwater work by a diver has disadvantages in that work efficiency and repair results are poor and costs are high as compared with land work. Also,
Since welding is difficult underwater and hardening of concrete is difficult underwater, work is often carried out by lifting a floating body structure with a crane or moving it to a dock. In this case, the above-mentioned disadvantages are solved, and the work efficiency and the repair result are improved. SUMMARY OF THE INVENTION The present invention provides an air storage case and an air bag acting in the floating direction on the underwater portion of the underwater floating structure when repairing or investigating the underwater floating structure. Alternatively, a method for repairing a floating watercraft structure, which comprises providing a hermetic seal and adjusting the amount of air sent into an air storage case or an air bag to ensure the required floating height of the floating watercraft structure, and then repairing or investigating the structure. It is. [0005] The air storage case of the air bag comprises a plywood (plywood, control panel, etc.) wall surface having an opening on one side and a reinforcing frame thereof, and the air bag is a bag having an opening on the same surface as the opening surface of the air storage case. The body is preferred. These may be formed singly when the floating structure is small, but when the floating structure is large, it is preferable to secure a volume of air necessary for floating by a plurality of floating structures. . According to the present invention, since the floating structure is levitated on site, the volume of the submerged portion of the floating structure is calculated, a necessary portion for floating is confirmed, and the confirmed portion only floats. As long as the volume of air is calculated, the volume of the air storage case to be used is determined, and the air storage case corresponding to the volume is made of the plywood wall and its reinforcing frame, and a vinyl sheet is prepared inside in the shape of a bag. Then, the entire air storage case is placed on the bottom surface of the underwater floating structure, and air is blown into the underwater floating structure to lift the floating structure, so that work can be performed on the water. The degree of floating of the waterborne structure can be determined by increasing or decreasing the total air filling volume of the air storage case, and the required floating part of the waterborne structure can be determined by the mounting position of the air storage case. 1 and 2 show an example in which a floating body structure 1 is a floating pier (pontoon), and the present invention is applied to a structure in which the movement is restricted by an anchor chain 2 and a mooring chain 12. FIG. (A) is a plan view, and (b) is a side view. FIG. 1 shows the situation of a normal floating pier. In repairing or investigating the floating pier, a plurality of air storage cases 3 are attached to the underwater bottom surface of the floating body structure 1 as shown in FIG. In this example, the air storage case 3 is a box having an airtight seal provided inside as shown in FIG. The air storage case is made up of 6 standard 3 x 6 plywood sized 1.
Internal volume with 8m × 1.8 m × 0.9 m can easily include the approximately 2.9 m 3. [0008] Air is injected into the air storage case 3 by the air compressor 10. When the offshore begins to ascend little by little, the anchor chain 2 may be stretched, so loosen the chain. If you need to fix the floating pier here,
Attach the temporary rope in the middle of the sinker or chain and fix it. When you reach the target draft, air management is performed by a diver. Repair work is performed in this state. Repairs include replacing rusted accessories, repairing damaged floating piers with concrete, and painting. FIGS. 3 (a) and 3 (b) show that the floating structure 1
It is an example of a floating pier supported by. In this case, since the floating pier is stably supported by the columns 4, the air storage case 3 is provided near the bottom center of the floating pier. The air storage case 3 has a structure shown in FIG. 6 in this example. An air bag 5 is inserted into the air storage case 3, and the required floating height of the floating body structure can be secured by adjusting the amount of air sent into the air bag 5. The air bag 3 is an inexpensive plywood wall 6 with an open bottom.
The air bag is a synthetic resin bag having an opening on the same side as the opening surface of the air storage case. For example, it can be easily processed by lining a polyolefin-based flat yarn film laminate, that is, a so-called blue sheet laying sheet. When air is injected into the air bag 5 by the air compressor 10, the floating pier rises along the column 4. The floating body structure 1 may be of a type that completely floats on the water as shown in FIGS. 4 (a) and 4 (b). In this case, the H of the beam 8 which protrudes greatly from side to side on the bottom of the floating pier
Section steel has been bridged. 5 and 6 below this beam.
If a large number of the air storage cases 6 as shown in FIG. 1 are installed, the floating body structure 1 can be stably completed without overturning. In particular, if 50 of the above-mentioned plywood are used, the floating pier with its own weight of 100 tons can be lifted above the water surface. In order to increase the ease of manufacture and the strength of the plywood-made air storage case, as shown in FIG. 7, a reinforcing member 9 formed of an extruded material such as a synthetic resin or an aluminum alloy is provided at the corner. When the plywood and the reinforcing member and the sealing material 11 or the airtight sheet constituting the wall surface 6 are prepared, the air storage case can be easily assembled on site, and the reinforcing member exhibits high strength and is stable. The floating of the floating structure is enabled. According to the present invention, it has been solved that underwater work by a diver has poorer work efficiency and repair results and higher cost than underground work. In addition, we made it possible to perform welding on water, which was difficult underwater, and solved the problem that concrete was difficult to cure underwater. Furthermore, there is no need to lift the floating structure on a crane or move it to the dock to perform the work, and the difficulties in that case have been solved. Both the work efficiency and the repair result became good, and a great effect was obtained.
【図面の簡単な説明】 【図１】浮桟橋の(a)は平面図、(b)は側面図である。 【図２】浮桟橋の(a)は平面図、(b)は側面図である。 【図３】浮桟橋の(a)は平面図、(b)は側面図である。 【図４】浮桟橋の(a)は平面図、(b)は側面図である。 【図５】空気収容ケースの斜視図である。 【図６】空気収容ケースの斜視図である。 【図７】コーナー補強材を設けた例の断面図である。 【符号の説明】 １ 水上浮体構造物 ２ アンカーチェン ３ 空気収容ケース ４ 支柱 ５ 空気袋 ６ 合板製壁面 ７ 補強枠 ８ 梁 ９ 補強部材 10 エアーコンプレッサ 11 シール材 12 繋留チェン[Brief description of the drawings] FIG. 1 (a) is a plan view and FIG. 1 (b) is a side view of a floating pier. FIG. 2A is a plan view and FIG. 2B is a side view of the floating pier. 3A is a plan view and FIG. 3B is a side view of the floating pier. 4A is a plan view and FIG. 4B is a side view of the floating pier. FIG. 5 is a perspective view of an air storage case. FIG. 6 is a perspective view of an air storage case. FIG. 7 is a sectional view of an example in which a corner reinforcing material is provided. [Explanation of symbols] 1 Water floating structure 2 Anchor chain 3 air storage case 4 props 5 air bag 6 Plywood wall 7 Reinforcement frame 8 beams 9 Reinforcement members 10 Air compressor 11 Seal material 12 Mooring chain
Claims (1)
して、該水上浮体構造物の底面に左右へ大きく突出させ
て渡架した梁の下方へ空気収容ケースを多数設置し、前
記空気収容ケースの開口面と同じ一面が開口した袋体で
浮揚方向に作用する空気袋を施して、空気袋に送込む空
気量の加減によって水上浮体構造物の必要浮揚高さを確
保したのち補修あるいは調査することを特徴とする水上
浮体構造物の補修工法。(57) [Claims 1] When repairing or investigating a floating body structure, it is made to protrude largely left and right from the bottom surface of the floating body structure.
A large number of air storage cases are installed below the beam
Subjected to air bag same one side to the opening face of the serial air housing case is applied to <br/> buoyant direction bag having an opening, it requires flotation height of water floating structure by subtraction of the amount of air Komu sent to air bag A method of repairing a floating body structure, characterized in that it is repaired or inspected after securing its height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25814994A JP3380341B2 (en) | 1994-10-24 | 1994-10-24 | Repair method for floating structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25814994A JP3380341B2 (en) | 1994-10-24 | 1994-10-24 | Repair method for floating structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08119192A JPH08119192A (en) | 1996-05-14 |
| JP3380341B2 true JP3380341B2 (en) | 2003-02-24 |
Family
ID=17316210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25814994A Expired - Lifetime JP3380341B2 (en) | 1994-10-24 | 1994-10-24 | Repair method for floating structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3380341B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140029880A (en) * | 2012-08-31 | 2014-03-11 | 박영현 | Airbag pontoon |
-
1994
- 1994-10-24 JP JP25814994A patent/JP3380341B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08119192A (en) | 1996-05-14 |
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