JPH0647828B2 - Offshore structure foundation construction method - Google Patents

Offshore structure foundation construction method

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Publication number
JPH0647828B2
JPH0647828B2 JP63271612A JP27161288A JPH0647828B2 JP H0647828 B2 JPH0647828 B2 JP H0647828B2 JP 63271612 A JP63271612 A JP 63271612A JP 27161288 A JP27161288 A JP 27161288A JP H0647828 B2 JPH0647828 B2 JP H0647828B2
Authority
JP
Japan
Prior art keywords
elements
offshore structure
joint
water
poured
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
Application number
JP63271612A
Other languages
Japanese (ja)
Other versions
JPH02120418A (en
Inventor
晶己 平野
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.)
Kumagai Gumi Co Ltd
Original Assignee
Kumagai Gumi Co Ltd
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 Kumagai Gumi Co Ltd filed Critical Kumagai Gumi Co Ltd
Priority to JP63271612A priority Critical patent/JPH0647828B2/en
Publication of JPH02120418A publication Critical patent/JPH02120418A/en
Publication of JPH0647828B2 publication Critical patent/JPH0647828B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、海洋構造物基礎構築工法に関するものであ
り、特に、完成時の海洋構造物を縦割りのエレメントに
分割した状態で製作し、之を現場まで曳航して構築する
海洋構造物基礎構築工法に関するものである。
Description: TECHNICAL FIELD The present invention relates to a method for constructing an offshore structure foundation, and in particular, a completed offshore structure is manufactured in a state in which it is divided into vertically divided elements, It is related to the offshore structure foundation construction method that is built by towing the building to the site.

[従来の技術] 従来の水中構造物の建築工法に関して特開昭61−23
3132号公報所載のものが知られている。之は海洋構
造物を横に分割してブロツクを構成し、このブロツクを
下段側より順次沈下せしめて積重ねると共に、各ブロツ
ク間を液密とし、少なくとも各ブロツク間の上下の接合
部を排水した後、各ブロツク間を接合するようにしたも
のである。
[Prior Art] Japanese Patent Laid-Open No. 61-23
The one described in Japanese Patent No. 3132 is known. The ocean structure was divided horizontally to form blocks, and the blocks were sequentially submerged from the lower side and stacked, and at the same time, the blocks were made liquid-tight and at least the upper and lower joints between the blocks were drained. After that, the blocks are joined together.

[発明が解決しようとする課題] 上記従来の工法は、海洋構造物を所要数横に分割してブ
ロツクを構成し、之を下段側より順次積重ねる方式を採
用している為、上下の各ブロツク間を液密に保持し、且
つ排水を施す必要がある。従って、各ブロツクの結合手
段が複雑となつて作業性が悪い。特に長い構造物の場合
に於ては、前記横方向に所要数分割したブロツクの上下
の結合手段が極めて困難でありコスト高の原因となつて
いた。そこで、作業性を良好にし工期を短縮してコスト
ダウンにも寄与できるようにするために解決せらるべき
技術的課題が生じてくるのであり、この発明は該課題を
解決することを目的とする。
[Problems to be Solved by the Invention] In the above-mentioned conventional construction method, a required number of laterally divided marine structures are divided into blocks to form blocks, and the blocks are sequentially stacked from the lower side. It is necessary to maintain liquid tightness between the blocks and to drain water. Therefore, the connecting means of each block is complicated and the workability is poor. Particularly in the case of a long structure, it is extremely difficult to connect the blocks at the top and bottom of the block divided by the required number in the lateral direction, which causes a high cost. Therefore, there arises a technical problem to be solved in order to improve workability, shorten the construction period, and contribute to cost reduction, and an object of the present invention is to solve the problem. .

[課題を解決するための手段] この発明は、上記目的を達成するために提案せられたも
のであり、浮体構造に形成された海洋構造物であって、
該海洋構造物は浮かせた状態で計画設置点上面まで曳航
され、然る後、該海洋構造物の中空部に注水して該海洋
構造物を着底せしめ、更に、該海洋構造物に設けた導杭
孔より支持杭を打設して該海洋構造物を海底に固定せし
めるようにした海洋構造物の基礎構築工法に於て、前記
海洋構造物は縦割り状に分割して相互に結合できるエレ
メントを構成し、且つ、該エレメントはその分割部位に
夫々隣接のエレメントと結合するための略楔状の継手孔
が上下方向に対峙して設けられており、該エレメントが
前記設置の海底面まで曳航されて海底面に着底される際
には、該エレメントの中空部に中性浮力に近い状態まで
注水して前記海底に仮着底させ、更に、隣接する相互の
エレメントは順次同様にして仮着底させ、更に、隣接の
相互のエレメントの整列状態を調整した後、該エレメン
トの分割部位に設けた前記双方の継手孔に継手部材を上
方から挿入して双方の継手孔に該継手部材を跨架せし
め、更に、該継手孔にグラウト材を注入して隣接相互の
エレメントを結合すると共に、必要により該エレメント
の中空部に注水又は充填材を注入して構築することを特
徴とする海洋構造物基礎構築工法を提供せんとするもの
である。
[Means for Solving the Problems] The present invention has been proposed to achieve the above object, and is an offshore structure formed in a floating structure,
The offshore structure was towed to the upper surface of the planned installation point in a floating state, and then, water was poured into the hollow part of the offshore structure to bottom the offshore structure, and the offshore structure was provided on the offshore structure. In a foundation construction method for an offshore structure in which a support pile is driven through a guide hole to fix the offshore structure to the seabed, the offshore structure can be divided into vertical divisions and connected to each other. The element is provided with a substantially wedge-shaped joint hole in the divided portion facing each other in the vertical direction so as to connect with the adjacent element, and the element is towed to the sea bottom of the installation. When it is struck on the sea floor, it is poured into the hollow part of the element to a state close to neutral buoyancy to make it temporarily land on the sea floor. Bottomed and then adjacent mutual elements After adjusting the alignment state, the joint members are inserted into the joint holes provided in the divided portions of the element from above to bridge the joint members in both joint holes, and further, the grout material is provided in the joint holes. It is intended to provide an offshore structure foundation construction method characterized by injecting water to connect adjacent elements to each other and, if necessary, injecting water or a filler into the hollow portion of the element to construct the foundation structure. .

[作用] 各エレメントは、完成時の海洋構造物を縦割りにした形
状で所要数陸上に於て製作し、而も、該エレメントは浮
体となるように十分な浮力を有する構成となつているの
で、該エレメントを浮かせて計画設置地点まで曳航して
前記計画設置地点に到達したとき、該エレメントの中空
部に該エレメントが中性浮力に近い状態まで注水して軟
着底させる。更に、該エレメントに隣接せるエレメント
を前記の方法と同様にして仮着底させる。そして、隣接
の相互のエレメントの整列状態を調整し、そして、エレ
メントの分割部位に縦方向に設けた楔状の継手孔を相互
に対峙せしめ、そして、該継手孔の上方から継手部材を
挿入して、双方の継手孔に該継手部材を跨架して隣接相
互のエレメントを仮結合する。このとき、前記調整操作
はエレメントの中性浮力状態で為されるので極めて容易
となる。而して、仮結合されたエレメントが仮設時の安
定を十分に得るために、更に、該エレメントの中空部に
注水調整して全体のエレメントの安定的着底を計ること
もできる。斯くして、従来公知の工法に従ってエレメン
トに設けた導杭孔より支持杭を打設して各エレメントを
海底に固定すると共に、前記中空部の余剰部位に注水
し、又は充填材を注入して重力を増大せしめ、更に、前
記エレメントの継手孔にグラウト材を注入して隣接せる
相互のエレメントを一体的に固化し、以て、海洋構造物
の基礎構築を為す。
[Operation] Each element is manufactured on the required number of shores in a vertically divided shape of the completed marine structure, and the elements have sufficient buoyancy so that they become a floating body. Therefore, when the element is floated and towed to the planned installation point and reaches the planned installation point, water is poured into the hollow portion of the element to a state close to neutral buoyancy to softly settle. Further, the element adjacent to the element is temporarily attached to the bottom by the same method as described above. Then, the alignment state of the adjacent mutual elements is adjusted, and the wedge-shaped joint holes vertically provided at the divided portions of the elements are opposed to each other, and the joint member is inserted from above the joint hole. , The joint members are straddled in both joint holes, and the mutually adjacent elements are temporarily coupled. At this time, since the adjusting operation is performed in the neutral buoyancy state of the element, it becomes extremely easy. Thus, in order to sufficiently obtain the stability of the temporarily joined element at the time of temporary installation, it is possible to adjust the water injection into the hollow portion of the element to measure the stable bottom of the entire element. Thus, while supporting each element by driving the support pile from the guide pile hole provided in the element according to a conventionally known construction method, and injecting water into the excess portion of the hollow portion, or injecting a filler. The gravity is increased, and further, the grout material is injected into the joint hole of the element to integrally solidify the adjoining mutual elements, thereby constructing the foundation of the marine structure.

[実施例] 以下、この発明の一実施例を別紙添付図面に従つて詳述
する。第1図乃至第5図は海洋構造物(1)を縦割りに分
割された状態に製作されたエレメントの夫々の実施例を
示す。第1図は第1実施例のエレメント(2)の斜面図で
あるが、該エレメント(2)は側面トウバ型に形成され、
且つ第2図の断面図に示す如く中空部(3)に形成され、
更に導杭孔(4)(4)…が上下に貫設されている。又、該エ
レメント(2)の分割部位である両側面には第7図に示す
継手部材(5)(5)を上方より下部に到って打設するための
継手孔(6)(6)が設けられている。そして、該継手孔(6)
(6)は隣接のエレメント(2)(2)を接合したとき(ハ)字状を
形成して前記継手部材(5)を双方に跨架打設せしめて継
手部(12)を構成している。従って、該(ハ)字状に形成さ
れる双方の継手孔(6)(6)を跨架して結合する前記継手部
材(5)は平面(ハ)字状に形成される。又、前記導杭孔(4)
(4)と継手孔(6)(6)は、前記中空部(3)と相互に導通しな
いようにして、該中空部(3)によるエレメント(2)の浮力
を保持することができるように構成されている。
[Embodiment] An embodiment of the present invention will be described below in detail with reference to the attached drawings. 1 to 5 show respective embodiments of the element manufactured in a state where the offshore structure (1) is vertically divided. FIG. 1 is a perspective view of the element (2) of the first embodiment. The element (2) is formed into a side towbar shape,
And as shown in the sectional view of FIG. 2, it is formed in the hollow portion (3),
In addition, guide pile holes (4) (4) ... Are pierced vertically. Further, joint holes (6) and (6) for driving the joint members (5) and (5) shown in FIG. 7 from the upper part to the lower part on both side surfaces which are divisional parts of the element (2). Is provided. And the joint hole (6)
(6) forms a (C) shape when the adjacent elements (2) and (2) are joined, and the joint part (12) is constructed by striking the joint member (5) on both sides. There is. Therefore, the joint member (5), which is connected to the joint holes (6) and (6) formed in the (C) shape, is formed in a plane (C) shape. Also, the guide hole (4)
(4) and the joint holes (6) and (6) are arranged so as not to be electrically connected to the hollow portion (3) so that the buoyancy of the element (2) by the hollow portion (3) can be retained. It is configured.

次に、第3図に示すエレメント(2a)を説明する。之は全
体が方形のブロツク状を呈しており、その両側面に設け
られた継手孔(6a)(6a)はT字状に形成され、双方のエレ
メント(2a)(2a)を合接したときH形を為すように設けら
れている。そして、該継手孔(6a)(6a)の近傍の前後に夫
々2個の前記導杭孔(4a)(4a),(4a)(4a)が上下に貫設さ
れている。そして、之等の導杭孔(4a)と継手孔(6a)とが
エレメント(2a)の中空部と相互に導通しないように構成
されていることは第1図のエレメント(2)と同様であ
る。
Next, the element (2a) shown in FIG. 3 will be described. The whole is in the shape of a square block, the joint holes (6a) (6a) provided on both sides of the block are formed in a T shape, and when both elements (2a) (2a) are joined. It is provided so as to form an H shape. The two guide pile holes (4a) (4a), (4a) (4a) are vertically provided in the front and rear of the vicinity of the joint holes (6a) (6a). It is similar to the element (2) in FIG. 1 that the guide pile hole (4a) and the joint hole (6a) are configured so as not to be electrically connected to the hollow portion of the element (2a). is there.

次に、第4図に示すエレメント(2b)について説明する。
このエレメント(2b)は第1図のエレメント(2)と同形で
あつて中空体に構成されているが、前記導杭孔(4)(4)は
両面の下段部位に設けられており、更に、両側の分割部
位に設けた継手孔(6b)(6b)は略円形に形成され、そし
て、隣接のエレメント(2b)と接合したときダルマ形とな
るように設けられている。
Next, the element (2b) shown in FIG. 4 will be described.
This element (2b) has the same shape as the element (2) of FIG. 1 and is formed as a hollow body, but the guide pile holes (4) and (4) are provided in the lower part of both surfaces. The joint holes (6b) (6b) provided at the divided portions on both sides are formed in a substantially circular shape, and are provided so as to form a dharma shape when joined to the adjacent element (2b).

又、第5図のエレメント(2c)は、海洋構造物(1)が方形
に構築される場合の角部に相当するものであり、従っ
て、平面L形に構成されると共に、下部には段部が設け
られており、中空部(3)、導杭孔(4)(4)並びに継手孔(6)
(6)を有することは第1図のエレメント(2)と全く同様で
ある。但し、上記エレメント(2)(2a)(2b)(2c)の形状並
び構成は前記の実施例のものに限定せらるべきではな
い。
Further, the element (2c) in FIG. 5 corresponds to a corner when the offshore structure (1) is constructed in a rectangular shape, and therefore is constructed in a plane L shape and has a step at the bottom. The hollow part (3), the guide pile hole (4) (4) and the joint hole (6) are provided.
Having the element (6) is exactly the same as the element (2) in FIG. However, the shape and arrangement of the elements (2) (2a) (2b) (2c) should not be limited to those in the above-mentioned embodiment.

尚、符号(7)(7)…はエレメント(2)(2a)(2b)(2c)の上面
に設けた注水孔を示す。
Reference numerals (7), (7), ... Show water injection holes provided on the upper surfaces of the elements (2), (2a), (2b), and (2c).

上記エレメントを用いた本発明の施工法を第6図及び第
7図に従って説明する。第6図(A)は施工前の海洋状態
を示し、(8)は水面、(9)は軟弱層、(10)は支持層であ
る。同図(B)に示すように、計画設置点の前記軟弱層(9)
の上面には砂層(11)を形成して整地せられる。そこで、
前記エレメントを前記砂層(11)の上面に順次並置するの
であるが、該エレメントは中空に形成され充分な浮力を
有するので、現場まで浮かせて曳航することができるこ
とは当然であるが、前記砂層(11)の上面まで曳航したと
き該エレメントの上面に設けた注水孔(7)(7)…より中性
浮力に近い状態まで適宜注水し乍ら沈下せしめ、同図
(C)に示す如く前記砂層(11)の上面に仮着底せしめるの
である。
A construction method of the present invention using the above element will be described with reference to FIGS. 6 and 7. Figure 6 (A) shows the state of the ocean before construction. (8) is the water surface, (9) is the soft layer, and (10) is the support layer. As shown in the figure (B), the soft layer (9) at the planned installation point
A sand layer (11) is formed on the upper surface of the ground for leveling. Therefore,
The elements are sequentially arranged side by side on the upper surface of the sand layer (11), but since the elements are formed in the hollow and have a sufficient buoyancy, it is natural that they can be floated to the site and towed, but the sand layer ( 11) When towed to the upper surface, the water injection holes (7) (7) provided on the upper surface of the element ... Properly inject water to a state closer to neutral buoyancy and allow it to sink,
As shown in (C), the sand layer (11) is temporarily set on the top surface.

次に、該仮着底せしめたエレメントに接合せらるべきエ
レメントを前述と同様の操作にて砂層(11)の上面に仮着
底せしめて海洋構造物(1)を縦割り状態に形成した各エ
レメントを並列せしめる。このとき、各エレメントを整
列させるとき、前記浮力を利用して仮着底せしめている
関係上、該整列調整操作が容易となる。斯くして隣接の
エレメントによつて形成される継手孔を跨架して、第7
図(A)(B)(C)に示す平面形の夫々の継手部材(5)を上方よ
り打設する。この打設操作は起重船(13)に備えたバイブ
ロハンマー(14)を用いて第6図(D)(E)に示す手順で行わ
れる。斯くして、各エレメントは仮結合されるのである
が、このとき再度、各エレメントの中空部(3)に注水し
乍ら前記砂層(11)の上面に着座せしめてもよい。その
後、第6図(F)に示す如く各エレメントの導杭孔(4)(4)
の上面より前記起重船(13)に備えた前記バイブロハンマ
ー(14)にて支持杭(15)(15)…を夫々打設して各エレメン
トを固定し、海洋構造物(1)を完成するのであるが、必
要により各エレメントの中空部(3)(3)…に注水又は充填
材を注入すると共に、継手孔にグラウト注入等の手段を
用いてモルタル(16)を注入して硬化せしめ、全体を安定
させるのである。斯くして、第8図(B)に示すようなシ
エル構造とすることもできる。
Next, the elements to be joined to the temporarily set bottom element are temporarily set on the upper surface of the sand layer (11) by the same operation as described above to form the marine structure (1) in a vertically divided state. Put the elements in parallel. At this time, when the elements are aligned, the alignment adjustment operation is facilitated due to the fact that the buoyancy is used to temporarily set the bottom. Thus, the joint hole formed by the adjacent elements is straddled to form the seventh
The flat joint members (5) shown in FIGS. (A), (B) and (C) are driven from above. This placing operation is performed by the procedure shown in FIGS. 6 (D) and 6 (E) using the vibro hammer (14) provided on the hoisting ship (13). Thus, each element is temporarily joined, but at this time, water may be poured into the hollow portion (3) of each element again to be seated on the upper surface of the sand layer (11). Then, as shown in Fig. 6 (F), the guide pile holes (4) (4) of each element
The support piles (15), (15) ... are respectively driven by the vibro hammer (14) provided on the hoisting ship (13) from the upper surface of each to fix each element, and the offshore structure (1) is completed. However, if necessary, water or filler is injected into the hollow parts (3) (3) of each element, and mortar (16) is injected into the joint hole by means such as grout injection to cure it. , Stabilize the whole thing. Thus, a shell structure as shown in FIG. 8 (B) can be obtained.

而して、前記支持杭(15)(15)…を打設したとき、該支持
杭(15)(15)…は海底の支持層(10)に深く打設され、各エ
レメントを海底に安定的に固定させるのであるが、該エ
レメントには適当な浮力を保持せしめて着底せしめてお
くこともできる。更に、該支持杭(15)(15)…の頭部に設
けたフランジとエレメントの頭部間にジヤツキー等を取
付けて押圧すれば、エレメントが沈下し、依って軟弱層
(9)内に喰込み埋設された状態となつて安定することに
なる。このような二つの事例に於ては双方とも軟弱層
(9)の掘削作業を要しない。
Thus, when the support piles (15) (15) ... are cast, the support piles (15) (15) ... are deeply cast in the seabed support layer (10) to stabilize each element on the seabed. However, it is also possible for the element to be set on the bottom by holding an appropriate buoyancy. Further, if a jack key or the like is attached and pressed between the flange provided on the heads of the support piles (15) (15) ... And the head of the element, the element sinks, and the soft layer
(9) It will be stable as it is embedded in the inside. In these two cases, both are in the soft layer.
The excavation work of (9) is not required.

尚、本発明は、本発明の精神を逸脱しない限り種々の改
変を為す事ができ、そして、本発明が該改変せられたも
のに及ぶことは当然である。
The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified one.

[発明の効果] 完成時の海洋構造物を分割してエレメントを構成し、そ
して、該エレメントは中空状に形成して充分な浮力を保
持させた点、並びに該エレメントに導杭孔を設け、該導
杭孔に支持杭を打設できるようにした点、及び該エレメ
ントは海水に浮かせた状態で計画設置地点まで曳航さ
れ、そして、該エレメントの中空部に注水して海底に着
底させ、更に、前記導杭孔より支持杭を打設して該エレ
メントを海底に固定させるようにした点は従来例と実質
的に同一である。
[Effect of the invention] The completed marine structure is divided into the elements, and the elements are formed in a hollow shape to retain sufficient buoyancy, and the element is provided with guide pile holes. A point where a support pile can be placed in the guide pile hole, and the element is towed to a planned installation point in a state of floating in seawater, and water is poured into the hollow portion of the element to reach the bottom of the sea, Further, the point that a support pile is driven from the guide pile hole to fix the element to the seabed is substantially the same as the conventional example.

而して、前記分割されたエレメントは従来は横に分割さ
れ、そして、下段側より順次積重ねる方式を採用してい
たため、既述のように諸種の不具合な点が生じた。そこ
で、本発明のエレメントは、完成時の海洋構造物を縦割
りにした形状で所要数陸上にて製作する。勿論、該エレ
メントは従来と同様に浮体構造とするために中空に形成
され、そして、該エレメントを浮かせて計画設置地点ま
で曳航して該計画設置地点に到達したとき、該エレメン
トの中空部に該エレメントが中性浮力に近い状態まで注
水して緩やかに仮着底させる。更に、該エレメントに隣
接せるエレメントを前述の方法と同様にして仮着底させ
る。そして、隣接の相互のエレメントの整列状態を調整
する。然るときは、各エレメントの分割部位に縦方向に
設けた継手孔は相互に対峙するので、該継手孔の上方か
ら継手材を挿入し、そして、該継手材を双方の継手孔に
跨架せしめて双方のエレメントを仮結合させる。このと
き、前記エレメントの整列の調整操作はエレメントの中
性浮力状態で為されるので、極めて容易確実に行われ
る。斯くして、仮結合されたエレメントが仮設時の安定
を十分に得るためには、更に注水して全体のエレメント
の安定的着底を計ることもできる。然る後、公知の工法
の通り、各エレメントに設けた導杭孔より支持杭を打設
して各エレメントを海底に固定すると共に、前記中空部
の余剰部位に再度注水し、又は充填材を注入して重力を
増大せしめ、更に、前記仮結合されている部位の継手孔
にグラウト材を注入して固化させる。而して、該継手孔
は略楔状に形成してあるため、該グラウト材は隣接のエ
レメント相互を強力に一体的に固化せしめることができ
る。
Thus, the divided elements are conventionally divided horizontally, and a method of sequentially stacking from the lower side has been adopted, so that various problems have occurred as described above. Therefore, the element of the present invention is manufactured on the required number of shores in a shape in which the completed marine structure is vertically divided. Of course, the element is formed in a hollow structure to have a floating structure as in the conventional case, and when the element is floated and towed to the planned installation point and reaches the planned installation point, the element is hollowed in the hollow portion. Water is poured until the element is close to neutral buoyancy, and the bottom is gently set. Further, the element adjacent to the element is temporarily attached to the bottom by the same method as described above. Then, the alignment state of adjacent mutual elements is adjusted. In that case, since the joint holes provided in the longitudinal direction at the divided portions of each element face each other, the joint material is inserted from above the joint hole, and the joint material is bridged over both joint holes. At the very least, both elements are temporarily combined. At this time, since the adjustment operation of the alignment of the elements is performed in the neutral buoyancy state of the elements, it is extremely easily and surely performed. Thus, in order to obtain sufficient stability of the temporarily joined elements at the time of temporary installation, it is possible to measure the stable bottom of the entire element by further pouring water. After that, as in the known construction method, while fixing each element to the seabed by driving a support pile from the guide pile hole provided in each element, refilling the excess portion of the hollow portion with water, or filling material. The grouting material is injected to increase the gravity, and further, the grout material is injected into the joint hole at the temporarily bonded portion to be solidified. Since the joint hole is formed in a substantially wedge shape, the grout material can strongly solidify the adjacent elements together.

更に、該エレメントは前述の如く縦割り構造であるた
め、施工途中に於ても構造物の安定性を保持できると共
に、状況変化による施工変更にも適応性を有し、且つ、
小型化することにより機械化施工も容易となり、更に、
エレメント相互の接続が容易であるため、短時間にシェ
ル構造とすることも可能となり、その他複合構造として
のメリットを短時間に得ることも可能となる。
Further, since the element has the vertically split structure as described above, it is possible to maintain the stability of the structure even in the middle of construction, and also to adapt to construction changes due to changing conditions, and
The smaller size makes mechanized construction easier, and
Since the elements can be easily connected to each other, it is possible to form the shell structure in a short time, and it is also possible to obtain the other advantages of the composite structure in a short time.

斯くの如く、海洋構造物は極めて強固に海底に構築され
ると共に、従来例に比し、構築作業が容易迅速且つ確実
に行われ、コストダウンにも寄与することになる。
As described above, the offshore structure is extremely strongly constructed on the seabed, and the construction work is easier, quicker and more reliable than the conventional example, which also contributes to cost reduction.

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

図は本発明の一実施例を示し、第1図、第3図、第4
図、第5図は夫々の実施の態様を示すエレメントの斜面
図であり、第2図は第1図のA−A線断面図、第6図
(A)(B)(C)(D)(E)(F)は施工手順を示す解説図、第7図
(A)(B)(C)はエレメントの接合部を示す一部切欠平面
図、第8図(A)(B)は海洋構造物を示す平面図である。 (1)……海洋構造物 (2)(2a)(2b)(2c)……エレメント (3)……中空部、(4)(4a)(4b)……導杭孔 (5)……継手部材、(6)(6a)(6b)……継手孔 (7)……注水孔、(8)……水面 (9)……軟弱層、(10)……支持層 (11)……砂層、(12)……継手部 (13)……起重船 (14)……バイブロハンマー (15)……支持杭、(16)……モルタル
FIG. 1 shows an embodiment of the present invention, which is shown in FIGS. 1, 3, and 4.
5 and 5 are perspective views of elements showing respective embodiments, and FIG. 2 is a sectional view taken along line AA of FIG. 1 and FIG.
(A) (B) (C) (D) (E) (F) are explanatory drawings showing the construction procedure, Fig. 7
(A) (B) (C) is a partially cutaway plan view showing a joint portion of elements, and FIGS. 8 (A) and (B) are plan views showing an offshore structure. (1) …… Offshore structure (2) (2a) (2b) (2c) …… Element (3) …… Hollow part, (4) (4a) (4b) …… Guide pile hole (5) …… Joint member, (6) (6a) (6b) …… Joint hole (7) …… Water injection hole, (8) …… Water surface (9) …… Soft layer, (10) …… Support layer (11) …… Sand layer, (12) …… Joint part (13) …… Hoisting ship (14) …… Vibro hammer (15) …… Support pile, (16) …… Mortar

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】浮体構造に形成された海洋構造物であっ
て、該海洋構造物は浮かせた状態で計画設置点上面まで
曳航され、然る後、該海洋構造物の中空部に注水して該
海洋構造物を着底せしめ、更に、該海洋構造物に設けた
導杭孔より支持杭を打設して該海洋構造物を海底に固定
せしめるようにした海洋構造物の基礎構築工法に於て、
前記海洋構造物は縦割り状に分割して相互に結合できる
エレメントを構成し、且つ、該エレメントはその分割部
位に夫々隣接のエレメントと結合するための略楔状の継
手孔が上下方向に対峙して設けられており、該エレメン
トが前記設置の海底面まで曳航されて海底面に着底され
る際には、該エレメントの中空部に中性浮力に近い状態
まで注水して前記海底に仮着底させ、更に、隣接する相
互のエレメントは順次同様にして仮着底させ、更に、隣
接の相互のエレメントの整列状態を調整した後、該エレ
メントの分割部位に設けた前記双方の継手孔に継手部材
を上方から挿入して双方の継手孔に該継手部材を跨架せ
しめ、更に、該継手孔にグラウト材を注入して隣接相互
のエレメントを結合すると共に、必要により該エレメン
トの中空部に注水又は充填材を注入して構築することを
特徴とする海洋構造物基礎構築工法。
1. An offshore structure formed in a floating structure, the offshore structure being towed to the upper surface of a planned installation point in a floating state, and then water is poured into a hollow portion of the offshore structure. A method of constructing a foundation for an offshore structure, wherein the offshore structure is set to the bottom, and further, a support pile is driven through a guide pile hole provided in the offshore structure to fix the offshore structure to the seabed. hand,
The marine structure constitutes an element that can be divided into vertical divisions and can be connected to each other, and the element has a substantially wedge-shaped joint hole facing each other in the vertical direction for connecting with adjacent elements. When the element is towed to the bottom of the installation and reaches the bottom of the sea, water is poured into the hollow part of the element to a state close to neutral buoyancy and temporarily attached to the bottom of the sea. Then, the adjacent mutual elements are temporarily fixed in the same manner in the same manner, and after adjusting the alignment state of the adjacent mutual elements, the joint holes are jointed to the both joint holes provided in the divided portions of the elements. A member is inserted from above so that the joint members are laid across both joint holes, and further, a grout material is injected into the joint holes to join adjacent mutual elements, and water is poured into the hollow portion of the elements if necessary. Marine structure foundation construction method, characterized in that constructed by injecting a filler.
JP63271612A 1988-10-27 1988-10-27 Offshore structure foundation construction method Expired - Lifetime JPH0647828B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63271612A JPH0647828B2 (en) 1988-10-27 1988-10-27 Offshore structure foundation construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63271612A JPH0647828B2 (en) 1988-10-27 1988-10-27 Offshore structure foundation construction method

Publications (2)

Publication Number Publication Date
JPH02120418A JPH02120418A (en) 1990-05-08
JPH0647828B2 true JPH0647828B2 (en) 1994-06-22

Family

ID=17502497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63271612A Expired - Lifetime JPH0647828B2 (en) 1988-10-27 1988-10-27 Offshore structure foundation construction method

Country Status (1)

Country Link
JP (1) JPH0647828B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015500931A (en) * 2011-12-09 2015-01-08 シー・ウインド・タワーズ・ソシエダッド・リミターダSea Windtowers,S.L. How to assemble telescopic tower

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487140B1 (en) * 2000-12-11 2005-05-03 가산토건 주식회사 Y-shaped structure element, construction methods of deep foundations and retaining structures by using the Y-shaped structure element
EP1404927B1 (en) 2001-06-28 2007-03-21 Tamnor Management & Consulting Ltd. Modular marine structures
KR101384165B1 (en) * 2012-05-02 2014-04-10 한국해양과학기술원 A cap for protecting foundation scouring for offshore wind turbine
JP6342097B1 (en) * 2018-03-09 2018-06-13 有限会社Laut Water-stopping steel material and construction method of water-stop wall using the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4963208A (en) * 1972-10-18 1974-06-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015500931A (en) * 2011-12-09 2015-01-08 シー・ウインド・タワーズ・ソシエダッド・リミターダSea Windtowers,S.L. How to assemble telescopic tower

Also Published As

Publication number Publication date
JPH02120418A (en) 1990-05-08

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