JPH10292404A - Construction method for underwater structure - Google Patents
Construction method for underwater structureInfo
- Publication number
- JPH10292404A JPH10292404A JP9103161A JP10316197A JPH10292404A JP H10292404 A JPH10292404 A JP H10292404A JP 9103161 A JP9103161 A JP 9103161A JP 10316197 A JP10316197 A JP 10316197A JP H10292404 A JPH10292404 A JP H10292404A
- Authority
- JP
- Japan
- Prior art keywords
- caisson
- box
- underwater
- water
- underwater 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.)
- Granted
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Foundations (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は水中構造物に関する
ものである。The present invention relates to underwater structures.
【０００２】[0002]
【従来の技術】軟弱地盤である水底に構造物を構築する
場合、図８に示すように、まず止水壁３５を構築して内
部の水を抜きとる。次に、ボイリング等を防ぐため止水
壁３５内の軟弱地盤３６に薬液などを注入して地盤改良
を行う。2. Description of the Related Art When constructing a structure on the water floor which is soft ground, as shown in FIG. 8, a water stop wall 35 is first constructed to drain water from inside. Next, in order to prevent boiling or the like, the ground is improved by injecting a chemical solution or the like into the soft ground 36 in the water stop wall 35.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記のような
構造物の方法は、止水壁の構築および軟弱地盤の改良が
大がかりであるため多大な時間と経費がかかった。However, the method of the above-described structure requires a great deal of time and cost because the construction of the water blocking wall and the improvement of the soft ground are extensive.
【０００４】本発明は上記のような問題点に鑑みてなさ
れたものであり、その目的は、軟弱地盤である水底や水
中に容易に構築できる水中構造物の構築方法を提供する
ことである。The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a method of constructing an underwater structure which can be easily constructed on a soft ground such as a water floor or underwater.
【０００５】[0005]
【課題を解決するための手段】以上の課題を解決するた
めの本発明の水中構造物の構築方法は、水底に平面円形
のケーソンを設置し、該ケーソンを中心にして平面扇形
の函体を複数緊張材で接続するとともに、これらの函体
同士を緊張材で接続することにより浮力で浮かぶ平面円
形の浮揚構造物を形成し、該浮揚構造物上にプレキャス
ト鉄筋コンクリート板を敷並べて基盤を形成し、該基盤
上に上部構造物を構築したことを特徴とする。In order to solve the above-mentioned problems, a method of constructing an underwater structure according to the present invention is to provide a caisson having a plane circular shape on the bottom of a water, and forming a box having a plane fan shape around the caisson. By connecting with a plurality of tendon members, connecting these boxes with tendon members to form a flat circular floating structure floating by buoyancy, laying precast reinforced concrete plates on the levitating structure to form a base An upper structure is constructed on the base.
【０００６】浮揚構造物および上部構造物の全荷重をケ
ーソンで支持地盤に伝達させて支持するとともに、浮揚
構造物が浮力によってバランスを保つ。また水中構造物
が波の影響によって動揺する場合は、水底に設置された
ケーソンの下端部がアンカーで支持地盤に支持されてい
るので、この下端部が重心軸となって、例えば駒のよう
に動揺する。[0006] The entire load of the floating structure and the upper structure is transmitted to and supported by the supporting ground by a caisson, and the floating structure maintains a balance by buoyancy. If the underwater structure is shaken by the influence of waves, the lower end of the caisson installed on the bottom of the water is supported on the supporting ground by the anchor, so this lower end becomes the center of gravity axis and swings like a piece, for example. I do.
【０００７】浮揚構造物の底面が軟弱な水底地盤に設置
された場合は、浮揚構造物がケーソンで支持されている
ため水底地盤の地盤沈下等に影響されない。[0007] When the bottom surface of the floating structure is installed on the soft underwater ground, the floating structure is supported by the caisson and is not affected by the subsidence of the underwater ground.
【０００８】[0008]
【発明の実施の形態】以下、水中構造物の構築方法の実
施の形態の一例を図面に基づいて詳細に説明する。図１
は水中構造物の平面方向の断面図、図２は同縦断面図で
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for constructing an underwater structure will be described below in detail with reference to the drawings. FIG.
Is a cross-sectional view of the underwater structure in a plane direction, and FIG. 2 is a longitudinal sectional view of the same.
【０００９】本実施の形態の水中構造物は海底の軟弱な
沖積粘土層３０上に構築されたものであり、大型の水中
構造物１と小型の水中構造物２とが水中トンネル３で接
続されている。大型の水中構造物１は水底に打設された
ケーソン４と、該ケーソン４を中心にして接続された函
体５よりなる浮揚構造物６と、該浮揚構造物６上に構築
された上部構造物７とから構成されている。The underwater structure according to the present embodiment is constructed on a soft alluvial clay layer 30 on the sea floor, and a large underwater structure 1 and a small underwater structure 2 are connected by an underwater tunnel 3. ing. The large underwater structure 1 includes a caisson 4 cast on the bottom of the water, a flotation structure 6 composed of a box 5 connected to the caisson 4 as a center, and an upper structure built on the flotation structure 6. And an object 7.
【００１０】ケーソン４は円筒４ａの上部に、該円筒４
ａよりも大きな平面円形の空隙体４ｂを備え、該空隙体
４ｂの内部が隔壁４ｃにより複数の部屋４ｄに分割さ
れ、空隙体４ｂの外面には函体５を載せる載置部４ｅが
形成されている。The caisson 4 is provided above the cylinder 4a.
A space 4b having a plane circular shape larger than a is provided, and the inside of the space 4b is divided into a plurality of rooms 4d by partition walls 4c, and a mounting portion 4e for mounting the box 5 is formed on the outer surface of the space 4b. ing.
【００１１】函体５は、図３に示すように、プレキャス
ト鉄筋コンクリートで形成され、内部が隔壁８および内
壁２３により３つの部屋９、１０に区画され、外側の部
屋１０はバラストとしての水を入れるために密閉されて
いる。また函体５の側面外周には上部を除いて鍔部１１
が形成され、該鍔部１１の表面にはゴムパッキン１２が
貼り付けられている。As shown in FIG. 3, the box 5 is formed of precast reinforced concrete, and the inside is divided into three rooms 9 and 10 by a partition wall 8 and an inner wall 23, and the outer room 10 is filled with water as ballast. Sealed for. The outer periphery of the side surface of the box 5 except for the upper part has a flange 11
Is formed, and a rubber packing 12 is attached to the surface of the flange portion 11.
【００１２】図３の（４）は函体５を、中空のブロック
５ａで形成したものであり、このように小さく分割する
ことにより、運搬が容易となるので、軟弱地盤や水中で
あっても簡単に形成することができる。FIG. 3 (4) shows the case 5 in which the box 5 is formed of a hollow block 5a. By dividing the case 5 into small pieces as described above, transportation becomes easy. It can be easily formed.
【００１３】以下、上記の大型の水中構造物の構築方法
について説明する。まず、水中構造物１の中心となるケ
ーソン４および函体５を陸上で製作する。そして、図４
に示すように、ケーソン４を所定箇所まで海上運送して
ニューマチックケーソン工法によって海底の軟弱な沖積
粘土層３０に打設する。この打設はケーソン４の下端が
洪積砂礫層３１に達するまで行い、その下端部をアンカ
ー１３で支持地盤に支持させる。Hereinafter, a method for constructing the large underwater structure will be described. First, a caisson 4 and a box 5 serving as the center of the underwater structure 1 are manufactured on land. And FIG.
As shown in (1), the caisson 4 is transported by sea to a predetermined location, and is driven into the soft alluvial clay layer 30 on the sea floor by the pneumatic caisson method. This casting is performed until the lower end of the caisson 4 reaches the dirt and gravel layer 31, and the lower end is supported on the supporting ground by the anchor 13.
【００１４】次に、函体５もケーソン４と同じように海
上に浮かべた状態で運搬してケーソン４に接続する。こ
の接続は、ケーソン４に設置したクレーン１４で函体５
の先端部を吊り上げて載置部４ｅに載せるとともに、先
端部の壁体１５からケーソン４に差し通した緊張材１６
でプレストレスを付与して行う。Next, the box 5 is connected to the caisson 4 by transporting the box 5 in the same manner as the caisson 4 while floating on the sea. This connection is made by the crane 14 installed in the caisson 4
Is lifted and placed on the mounting portion 4e, and the tension member 16 inserted into the caisson 4 from the wall 15 at the distal end.
Is performed by applying a prestress.
【００１５】緊張材１６は、図５の（１）に示すような
防錆処理が施されたＰＣ鋼より線１７が使用される。こ
のＰＣ鋼より線１７は、芯線１７ａおよび側線１７ｂの
外周がそれぞれ合成樹脂粉末塗料の内層筒１８で被覆さ
れるとともに、該内層筒１８の外周が合成樹脂製の中層
筒１９と外層筒２０とで二重に被覆され、これらの中層
筒１９と外層筒２０との間にはグリス等の滑材２１が充
填されて形成されている。As the tendon 16, a PC steel strand 17 subjected to a rust-proof treatment as shown in FIG. 5 (1) is used. In the PC steel strand 17, the outer circumference of the core wire 17a and the outer circumference of the side wire 17b are respectively covered with an inner cylinder 18 made of a synthetic resin powder paint, and the outer circumference of the inner cylinder 18 is made of a synthetic resin middle cylinder 19 and an outer cylinder 20. The middle layer cylinder 19 and the outer layer cylinder 20 are filled with a lubricating material 21 such as grease.
【００１６】そして、図５の（２）に示すように、他の
函体５を海上運送して、前記と同様の方法でケーソン４
に接続する。そしてケーソン４を中心にして接続された
函体５の外壁２２に緊張材１６を差し通して緊張するこ
とによって函体５が横方向で接続されて平面円形の浮揚
構造物６が形成される。Then, as shown in FIG. 5 (2), another box 5 is transported by sea, and the caisson 4 is made in the same manner as described above.
Connect to Then, by inserting the tension member 16 into the outer wall 22 of the box 5 connected around the caisson 4 and tightening it, the box 5 is connected in the lateral direction and the floating circular structure 6 having a plane circular shape is formed.
【００１７】このとき、図６に示すように、函体５の接
続部には空隙部２５が形成されるが、ここに入った水を
ポンプで抜き取ってドライな作業空間とする。この空隙
部２５にはゴムパッキン１２で水が入らないようになっ
ている。At this time, as shown in FIG. 6, a gap 25 is formed in the connection portion of the box 5, and the water entered therein is drawn out by a pump to make a dry working space. Water is prevented from entering the gap 25 by the rubber packing 12.
【００１８】そして、図７に示すように、ドライな作業
空間となった空隙部２５に片持梁２６を構築して緊張材
１６でケーソン４に支持させる。これは現場打ちで構築
するが、ＰＣ梁をケーソン４に接続して構築することも
できる。なおＰＣ梁の場合はケーソン４に接続した後
に、函体５同士の接続を行う。Then, as shown in FIG. 7, a cantilever 26 is constructed in the gap 25 serving as a dry working space, and is supported by the caisson 4 with the tendon 16. Although this is constructed by cast-in-place, it can also be constructed by connecting a PC beam to the caisson 4. In the case of a PC beam, after the connection to the caisson 4, the connection between the boxes 5 is performed.
【００１９】次に、ケーソン４に接続された函体５同士
の接続を行う。これは、図７に示すように、函体５の内
壁２３、壁体１５に両側の函体５から緊張材１６を差し
通し、これを緊張定着することによって各函体５同士が
横方向で接続されて平面円形の浮揚構造物６が形成され
る。Next, the boxes 5 connected to the caisson 4 are connected. As shown in FIG. 7, the tension members 16 are inserted into the inner wall 23 and the wall body 15 of the box 5 from the boxes 5 on both sides, and are tightened and fixed, so that the boxes 5 are laterally connected to each other. They are connected to form a flat circular floating structure 6.
【００２０】このとき各函体５が空隙部２５の片持梁２
６に固定されるため、浮揚構造物６はケーソン４の載置
部４ｅと片持梁２６とで支持されるとともに、浮力によ
ってバランスが保たれる。またバランスを保つために各
函体５の外側の部屋１０にバラストとしての水を注水す
る。At this time, each box 5 is provided with the cantilever 2 of the cavity 25.
6, the floating structure 6 is supported by the mounting portion 4e of the caisson 4 and the cantilever 26, and the balance is maintained by buoyancy. In addition, water as ballast is injected into the room 10 outside each box 5 in order to maintain balance.
【００２１】このように浮揚構造物６が構築され後に、
図２に示すように、その上面にプレキャスト鉄筋コンク
リート板を敷き並べて基盤２７をつくり、これが片持梁
２６の上面と、函体の側壁の上面で支持されている。After the floating structure 6 is constructed in this way,
As shown in FIG. 2, a precast reinforced concrete plate is laid on the upper surface to form a base 27, which is supported by the upper surface of the cantilever 26 and the upper surface of the side wall of the box.
【００２２】そして基盤２７上に、各種の上部構造物７
を構築する。この構築方法は在来の方法で行い、これを
透明な膜や枠体等の被覆材２８で覆って波や風の影響を
避ける。Then, on the base 27, various upper structures 7
To build. This construction method is performed by a conventional method, which is covered with a covering material 28 such as a transparent film or a frame to avoid the influence of waves and wind.
【００２３】また大型の水中構造物１に水中トンネル３
で接続された小型の水中構造物２も前記と同様の方法で
構築する。さらに本実施の形態では浮揚構造物６を軟弱
地盤上に構築した場合について説明したが、これを水中
に構築する場合も前記と同様の方法で構築する。The underwater tunnel 3 is mounted on the large underwater structure 1.
The small underwater structure 2 connected by the above is also constructed in the same manner as described above. Further, in the present embodiment, the case where the levitating structure 6 is constructed on soft ground has been described. However, when the levitating structure 6 is constructed underwater, it is constructed in the same manner as described above.
【００２４】小型の水中構造物２は、函体５が平面扇形
でかつ縦壁２９ａで横方向に分割された２つの部屋２９
を備えた点を除いて、上記の大型の水中構造物１と同一
の構成である。The small underwater structure 2 is composed of two rooms 29 in which the box 5 has a flat fan shape and is divided horizontally by a vertical wall 29a.
It has the same configuration as the large underwater structure 1 except that it is provided with
【００２５】[0025]
【発明の効果】水中構造物を、水底に設置したケーソン
を中心にして形成された浮揚構造物上に構築したことに
より、軟弱地盤上や水中であっても水中構造物が構築で
きる。According to the present invention, an underwater structure can be constructed on a soft ground or underwater by constructing the underwater structure on a floating structure formed around a caisson installed on the bottom of the water.
【００２６】軟弱地盤上や水中に構造物を構築する場
合、止水壁の設置工事や地盤改良工事等を省略できる。In the case of constructing a structure on soft ground or in water, installation work of a water stop wall, ground improvement work, and the like can be omitted.
【００２７】浮揚構造物および上部構造物の全荷重をケ
ーソンで支持地盤に伝達させて支持するとともに、浮揚
構造物が浮力によってバランスされているため、構造物
が軟弱地盤の地盤沈下や不同沈下の影響を受けない。The entire load of the levitating structure and the upper structure is transmitted to the supporting ground by a caisson and supported, and since the levitating structure is balanced by the buoyancy, the structure is subject to land subsidence or uneven subsidence of soft ground. Not affected.
【００２８】函体がプレキャスト鉄筋コンクリートで製
造できるため、水中構造物が短期間でかつ簡単に構築で
きる。Since the box can be made of precast reinforced concrete, an underwater structure can be easily constructed in a short time.
【００２９】ケーソンの下端部が水底に設置され、かつ
アンカーで支持地盤に固定されているので、水中構造物
が波によって動揺したとしても、ケーソンの下端部が重
心軸となって、例えば駒のように動揺する。Since the lower end of the caisson is installed on the bottom of the water and is fixed to the supporting ground by the anchor, even if the underwater structure is shaken by the waves, the lower end of the caisson becomes the axis of the center of gravity, for example, like a piece. Upset.
【００３０】各函体とケーソン、および函体同士はそれ
ぞれ防錆処理された緊張材でストレスが付与されて接続
されたことにより、海水等による緊張材の錆が防げる。Each of the cases, the caisson, and the cases are connected with each other by applying a stress with a rust-preventing tendon, thereby preventing rust of the tendon due to seawater or the like.
【００３１】浮揚構造物が、ケーソンの載置部と函体両
側の空隙部内に形成された片持梁とで堅固に支持されて
いる。The floating structure is firmly supported by the caisson mounting portion and the cantilever beams formed in the gaps on both sides of the box.
【００３２】函体を上で製作して水上に浮かばせて運搬
できるとともに、函体同士を接続した場合に、その接続
部にドライな空隙部を形成できる。The box can be manufactured above and floated on the water, and when the boxes are connected to each other, a dry gap can be formed at the connection.
【００３３】函体の部屋内にバラストとしての水を入れ
ることにより、浮揚構造物全体のバランスをとることが
できる。By putting water as ballast into the box room, the entire floating structure can be balanced.
【図１】水中構想物の水平方向の断面図である。FIG. 1 is a horizontal sectional view of an underwater concept.
【図２】水中構想物の縦断面図である。FIG. 2 is a longitudinal sectional view of an underwater concept.
【図３】（１）は函体の水平方向の断面図、（２）は同
縦断面図、（３）は同側面図、（４）は中空のブロック
で形成する函体の平面図である。Fig. 3 is a horizontal sectional view of the box, (2) is a longitudinal sectional view of the box, (3) is a side view of the box, and (4) is a plan view of a box formed of a hollow block. is there.
【図４】（１）はケーソンに函体を接続する平面図、
（２）は同断面図である。FIG. 4 is a plan view of connecting a box to a caisson,
(2) is the same sectional view.
【図５】（１）はＰＣ鋼より線の断面図、（２）はケー
ソンに函体を接続する平面図、函体とケーソンとの接続
部を示す断面図である。5A is a cross-sectional view of a PC stranded wire, FIG. 5B is a plan view of connecting a box to a caisson, and a cross-sectional view showing a connection portion between the box and the caisson.
【図６】（１）および（２）は函体同士の接続を示す断
面図である。FIGS. 6 (1) and (2) are cross-sectional views showing connections between boxes.
【図７】（１）は函体の接続を示す拡大断面図、（２）
は函体とケーソンの接続部の断面図、（３）は函体同士
の接続部の断面図である。FIG. 7 is an enlarged cross-sectional view showing connection of a box, and FIG.
Is a cross-sectional view of the connection between the box and the caisson, and (3) is a cross-sectional view of the connection between the boxes.
【図８】従来の水中構造物の構築方法を示す断面図であ
る。FIG. 8 is a cross-sectional view illustrating a conventional method of constructing an underwater structure.
１ 大型の水中構造物 ２ 小型の水中構造物 ３ 水中トンネル ４ ケーソン ４ｅ 載置部 ５ 函体 ６ 浮揚構造物 ７ 上部構造物 DESCRIPTION OF SYMBOLS 1 Large underwater structure 2 Small underwater structure 3 Underwater tunnel 4 Caisson 4e Placement part 5 Case 6 Floating structure 7 Upper structure
Claims (4)
ケーソンを中心にして平面扇形の函体を複数緊張材で接
続するとともに、これらの函体同士を緊張材で接続する
ことにより浮力で浮かぶ平面円形の浮揚構造物を形成
し、該浮揚構造物上にプレキャスト鉄筋コンクリート板
を敷並べて基盤を形成し、該基盤上に上部構造物を構築
したことを特徴とする水中構造物の構築方法。A flat circular caisson is installed on the bottom of the water, and a plurality of flat fan-shaped boxes are connected with a plurality of tendons around the caisson, and these boxes are connected with a tendon to provide buoyancy. A method for constructing an underwater structure, comprising: forming a floating circular floating structure in a plane shape; laying a precast reinforced concrete plate on the floating structure to form a base; and building an upper structure on the base.
持されていることを特徴とする請求項１に記載の水中構
造物の構築方法。2. The method according to claim 1, wherein the caisson is supported on a supporting ground by an anchor.
面に空隙部を形成したことを特徴とする請求項１に記載
の水中構造物の構築方法。3. The method for constructing an underwater structure according to claim 1, wherein voids are formed on both side surfaces of the connection between the boxes.
て接続することを特徴とする請求項１に記載の水中構造
物の構築方法。4. The method for constructing an underwater structure according to claim 1, wherein water as a ballast is put in the box and connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9103161A JP2948778B2 (en) | 1997-04-21 | 1997-04-21 | How to build underwater structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9103161A JP2948778B2 (en) | 1997-04-21 | 1997-04-21 | How to build underwater structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10292404A true JPH10292404A (en) | 1998-11-04 |
| JP2948778B2 JP2948778B2 (en) | 1999-09-13 |
Family
ID=14346791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9103161A Expired - Fee Related JP2948778B2 (en) | 1997-04-21 | 1997-04-21 | How to build underwater structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2948778B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155582A (en) * | 2015-10-06 | 2015-12-16 | 东北石油大学 | On-water floating and splitting lift type energy-saving building structure system and construction method |
| JP2020176458A (en) * | 2019-04-19 | 2020-10-29 | 黒沢建設株式会社 | Construction method for reclaimed land on sea |
| CN112478100A (en) * | 2020-12-18 | 2021-03-12 | 览越工程管理咨询有限公司 | Method for building concrete spherical underwater building |
-
1997
- 1997-04-21 JP JP9103161A patent/JP2948778B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155582A (en) * | 2015-10-06 | 2015-12-16 | 东北石油大学 | On-water floating and splitting lift type energy-saving building structure system and construction method |
| CN105155582B (en) * | 2015-10-06 | 2017-03-29 | 东北石油大学 | Floating on water surface split hoisting type energy-saving building structural system and construction method |
| JP2020176458A (en) * | 2019-04-19 | 2020-10-29 | 黒沢建設株式会社 | Construction method for reclaimed land on sea |
| CN112478100A (en) * | 2020-12-18 | 2021-03-12 | 览越工程管理咨询有限公司 | Method for building concrete spherical underwater building |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2948778B2 (en) | 1999-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9175493B2 (en) | Core component and tower assembly for a tower structure | |
| KR101675507B1 (en) | Buoyant body for marine buoyancy structure and the fabricating method therefor | |
| JP2948778B2 (en) | How to build underwater structures | |
| KR102512405B1 (en) | An caisson structure by caisson block bonding method | |
| US20050183363A1 (en) | Prefabricated tower foundation comprising equipment shelters and a method for its deployment on site | |
| JPH0921141A (en) | Construction of undersea or under-river tunnel | |
| JP2948777B2 (en) | Underwater structures | |
| JP2681503B2 (en) | Steel sink and its installation method | |
| JP2564429B2 (en) | How to build a synthetic slab bridge | |
| JP2948779B2 (en) | Underwater structures | |
| JP2000110153A (en) | Sea bottom soft fixed offshore concrete structure | |
| RU2135386C1 (en) | Floating platform | |
| JP2001182032A (en) | Floating box body | |
| JPH039252B2 (en) | ||
| JP2887712B2 (en) | Underground diaphragm wall method | |
| SU1721169A1 (en) | Built-up hydraulic structure | |
| JP2503854Y2 (en) | Wave control structure using columnar members | |
| JP2001049649A (en) | Method for constructing floating artificial ground | |
| JP3808552B2 (en) | Form for constructing underwater caisson, underwater caisson and construction method thereof | |
| JPS605063Y2 (en) | floating structure | |
| JP2000144674A (en) | Built-up wave-suppressing caisson and its construction method | |
| JPH08109646A (en) | Steel frame body for composite structure settling box and composite structure settling box making use thereof | |
| JP2000212969A (en) | Caisson footing of honeycomb structure | |
| JP2973177B2 (en) | PC girder installation method | |
| JPH09125473A (en) | Water storage tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070702 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080702 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090702 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100702 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110702 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110702 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120702 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130702 Year of fee payment: 14 |
|
| LAPS | Cancellation because of no payment of annual fees |