JPS598832A - Sheet for stabilizing basal bottom of structure under water - Google Patents
Sheet for stabilizing basal bottom of structure under waterInfo
- Publication number
- JPS598832A JPS598832A JP11409382A JP11409382A JPS598832A JP S598832 A JPS598832 A JP S598832A JP 11409382 A JP11409382 A JP 11409382A JP 11409382 A JP11409382 A JP 11409382A JP S598832 A JPS598832 A JP S598832A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- steel tube
- sand
- under water
- perforated
- 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
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 239000004576 sand Substances 0.000 abstract description 16
- 239000002689 soil Substances 0.000 abstract description 7
- 238000009991 scouring Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Revetment (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は例えばケーソンの如き水中構造物の基底部に敷
設され、水流、波浪等による水底地盤の洗掘に基く前記
水中構造物の沈下、傾斜を防止する水中構造物の基底部
安定用シートの改良に係り、水中構造物の基底部に敷設
される可撓性シートの自由端に鋼管を装着するとともに
、同鋼管内に挿通された索条を介して有孔管を連結して
なることを特徴とするもので、その目的とする処は、簡
単な構成で、前記シートにおける水中構造物の基底部周
縁から突出する自由端部の波浪、水流による揺動に基因
する同端部の下部の土砂の洗掘を防止する、改良された
水中構造物の基底部安定用シートを供する点にある。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an underwater structure that is installed at the base of an underwater structure such as a caisson, and that prevents the underwater structure from sinking or tilting due to scour of the underwater ground by water currents, waves, etc. Regarding the improvement of the base stabilization sheet for underwater structures, a steel pipe is attached to the free end of the flexible sheet laid at the base of the underwater structure, and a perforated pipe is attached to the free end of the flexible sheet laid at the base of the underwater structure. The purpose of this is to have a simple structure, and to prevent the sheet from shaking due to waves or water currents at the free end of the sheet that protrudes from the base periphery of the underwater structure. An object of the present invention is to provide an improved sheet for stabilizing the base of an underwater structure, which prevents scouring of earth and sand at the lower part of the same end.
本発明に係る安定用シートは前記したように可撓性シー
ト本体の端部に装着された鋼管に挿通された索条を介し
て有孔鋼管及び有孔コンクリート管の如き有孔管に対し
て揺動自在に連結されているので、本発明のシートを水
中構造物の基底部に敷設すると、同基底部の周縁より突
出する前記シート端部における前記有孔管の中空部に初
め下部より土砂が進入堆積することによって重量が増し
、水底地盤内に沈降し、この沈降の進行に伴って周辺の
土砂、漂砂が上部より進入し、有孔管は砂とともに水底
地盤内に埋没し、同地盤内の土砂と有孔管内の土砂とが
連通ずることによって水底地盤と有孔管とが一体化され
たアンカ一部が構成され、かくして同有孔管が水中地盤
に確固と碇着される。As described above, the stabilizing sheet according to the present invention is attached to perforated pipes such as perforated steel pipes and perforated concrete pipes through cables inserted through steel pipes attached to the ends of the flexible sheet main body. Since the sheets of the present invention are connected so as to be swingable, when the sheet of the present invention is laid at the base of an underwater structure, earth and sand are first poured from the bottom into the hollow part of the perforated tube at the end of the sheet that protrudes from the periphery of the base. As the water enters and accumulates, its weight increases and it sinks into the water bed ground. As this sedimentation progresses, surrounding earth and sand and alluvial sand enter from above, and the perforated pipe is buried in the water bed ground along with the sand, causing the same ground to sink. The communication between the earth and sand inside the perforated pipe forms a part of the anchor in which the underwater ground and the perforated pipe are integrated, and the perforated pipe is thus firmly anchored to the underwater ground.
この結果、前記シートの自由端部は水底地盤上に安定し
た状態に保持される。従って水中構造物の基底部周縁よ
り突出した前記シートにおける自由端部の水流、波浪に
よる揺動が防止され、この揺動によるシート自由端部の
下部地盤の洗掘が防止され、地耐力の不均等に基因する
水中構造物の不等沈下が防止されるものである。As a result, the free end of the sheet is held stable on the underwater ground. Therefore, the free end of the sheet protruding from the periphery of the base of the underwater structure is prevented from swinging due to water currents and waves, and the ground beneath the free end of the sheet is prevented from being scoured due to this swinging, thereby reducing the soil bearing capacity. Unequal sinking of underwater structures due to uniformity is prevented.
前記シートの端部に重量物をアンカーとして装着した場
合、同アンカーが洗掘によって水底地盤の土砂中に深く
埋没することは不可能で、アンカーとしての所期の目的
を十分に達成できない憾みがあるが、本発明においては
アンカーとしての有孔管が屈撓自在の索を介してシート
本体自由端部の鋼管に連結されているので、前記有孔管
は容易に水底地盤の土砂中に深く埋没してアンカー効果
を挙げることができる。またこの際、前記有孔管の連結
索条がシート本体の端部鋼管に挿通、連結されているの
で、有孔管の埋没に伴って索条に緊張力が作用した際、
シート本体の自由端部が剪断されることがない等、本発
明は多くの利点を有するものである。When a heavy object is attached to the end of the sheet as an anchor, it is impossible for the anchor to be deeply buried in the soil of the underwater ground due to scouring, and it is regrettable that the intended purpose of the anchor cannot be fully achieved. However, in the present invention, the perforated pipe serving as the anchor is connected to the steel pipe at the free end of the seat body via a flexible rope, so the perforated pipe can be easily inserted deeply into the earth and sand at the bottom of the water. It can be buried and create an anchor effect. In addition, at this time, since the connecting cables of the perforated pipes are inserted and connected to the end steel pipes of the seat body, when tension is applied to the cables as the perforated pipes are buried,
The present invention has many advantages, including that the free end of the sheet body is not sheared.
以下本発明を図示の実施例について説明する。The present invention will be described below with reference to the illustrated embodiments.
（１）は塩化ビニールシート等より構成された水中構造
物の基底部安定用のシート本体で、その端部に所要間隔
を存して配設された鋼管（２）が巻込まれ、四巻込端部
（１ａ）をシート本体（１）に溶着することによって、
鋼管（２）がシート本体（１）の自由端部に装着されて
いる。(1) is a sheet body for stabilizing the base of an underwater structure made of vinyl chloride sheet, etc. Steel pipes (2) arranged at the required intervals are wound around the ends of the sheet, and four windings are formed. By welding the end portion (1a) to the sheet body (1),
A steel tube (2) is attached to the free end of the seat body (1).
（３）は多数の透孔（お−）を有する有孔鋼管で、前記
鋼管（２）に挿通された−仕りプロピレン等の索条（４
）を介して連結されている。(3) is a perforated steel pipe having a large number of through-holes (O-), which is inserted into the steel pipe (2).
) are connected via.
前記のように構成されて水中構造物の基底部安定用シー
トは、ケーソンの如き水中構造物（５）の基底部に敷設
されるもので、同構造物（Ａ）の基底部周縁より突出し
たシート本体（１）の自由端部における鋼管（２）に索
条（４）を介して連結された有孔鋼管（３）内に初めＦ
部より透孔（３ｈ）を介して進入し、同有孔鋼管（３）
内に堆積することによって同鋼管（３）が自然に沈降し
、この沈降に伴って周辺の土砂及び漂砂が上部より進入
し、有孔鋼管（３）は砂とともに水底地盤（Ｔ３）内に
埋設し、同地盤（Ｉ３）内の土砂と有孔鋼管（３）内の
土砂とが連通ずることによって水底地盤（１３）と有孔
鋼管（３）とが一体化されたアンカ一部が構成され、前
記ノート本体（１）の端部が水底地盤（５）上に安定し
た状態で保持されるものである。The sheet for stabilizing the base of an underwater structure constructed as described above is laid at the base of an underwater structure (5) such as a caisson, and is a sheet that protrudes from the periphery of the base of the structure (A). F is first inserted into the perforated steel pipe (3) connected to the steel pipe (2) via the cable (4) at the free end of the seat body (1).
Enter through the through hole (3h) from the same perforated steel pipe (3).
As a result, the steel pipe (3) naturally sinks due to the sedimentation inside, and with this settling, surrounding earth and sand enters from above, and the perforated steel pipe (3) is buried with sand in the underwater ground (T3). However, by communicating the earth and sand in the same ground (I3) and the earth and sand in the perforated steel pipe (3), a part of the anchor where the underwater ground (13) and the perforated steel pipe (3) are integrated is formed. , the end of the notebook body (1) is held stably on the underwater ground (5).
この結果、シート本体（１）の自由端部の、波浪、水流
による揺動が閉止され、同自由端部下方の水底地盤（Ｂ
）の土砂の洗掘による不等沈下に基因する水中構造物（
Ａ）の傾斜、沈下が未然に防止されるものである。As a result, the free end of the seat body (1) is prevented from shaking due to waves and water currents, and the water bottom ground (B
Underwater structures (
This prevents tilting and subsidence in A).
以上本発明を実施例について説明したが、本発明は勿論
このような実施例にだけ局限されるものではなく、本発
明の精神を逸脱しない範囲内で種々の設計の改変を施し
うるものである。Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .
第１図は本発明に係る水中構造物の基底部安定用シート
の一実施例を示す平面図、第２図はその側面図、第６図
はその使用状態を示す縦断面図、第４図はその部分拡大
図である。
（１）・・・シート本体、（２）・・・鋼管、（３）・
・・有孔鋼管、（３ａ）・・・透孔、（４）・・・索条
。
代理人 弁理士 岡 本 重 文
外２名Fig. 1 is a plan view showing an embodiment of the sheet for stabilizing the base of an underwater structure according to the present invention, Fig. 2 is a side view thereof, Fig. 6 is a longitudinal cross-sectional view showing its usage state, and Fig. 4 is a partially enlarged view. (1) Seat body, (2) Steel pipe, (3)
... Perforated steel pipe, (3a) ... Through hole, (4) ... Cable. Agent: Patent attorney: Shige Okamoto, 2 other people
Claims (1)
に鋼管を装着するとともに、同鋼管内に挿通された索条
を介して有孔管を連結してなることを特徴とする水中構
造物の基底部安定用シート。An underwater structure characterized in that a steel pipe is attached to the free end of a flexible sheet laid at the base of an underwater structure, and a perforated pipe is connected to the steel pipe through a cable inserted through the steel pipe. Sheet for stabilizing the base of structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11409382A JPS6053125B2 (en) | 1982-07-02 | 1982-07-02 | Sheet for stabilizing the base of underwater structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11409382A JPS6053125B2 (en) | 1982-07-02 | 1982-07-02 | Sheet for stabilizing the base of underwater structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS598832A true JPS598832A (en) | 1984-01-18 |
| JPS6053125B2 JPS6053125B2 (en) | 1985-11-22 |
Family
ID=14628922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11409382A Expired JPS6053125B2 (en) | 1982-07-02 | 1982-07-02 | Sheet for stabilizing the base of underwater structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6053125B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5216201A (en) * | 1989-09-05 | 1993-06-01 | Fuji Photo Film Co., Ltd. | Liquid electrophotographic developing device |
-
1982
- 1982-07-02 JP JP11409382A patent/JPS6053125B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5216201A (en) * | 1989-09-05 | 1993-06-01 | Fuji Photo Film Co., Ltd. | Liquid electrophotographic developing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6053125B2 (en) | 1985-11-22 |
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