EP0099938A1 - Under-water supporting construction and its installation in deep waters for self raising sea platforms - Google Patents

Under-water supporting construction and its installation in deep waters for self raising sea platforms Download PDF

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Publication number
EP0099938A1
EP0099938A1 EP82106808A EP82106808A EP0099938A1 EP 0099938 A1 EP0099938 A1 EP 0099938A1 EP 82106808 A EP82106808 A EP 82106808A EP 82106808 A EP82106808 A EP 82106808A EP 0099938 A1 EP0099938 A1 EP 0099938A1
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EP
European Patent Office
Prior art keywords
main
installation
substructure
support frame
beams
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
Application number
EP82106808A
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German (de)
French (fr)
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EP0099938B1 (en
Inventor
Giunio Guido Santi
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Individual
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Individual
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Priority to DE8282106808T priority Critical patent/DE3270405D1/en
Priority to EP19820106808 priority patent/EP0099938B1/en
Priority to AU86792/82A priority patent/AU555240B2/en
Priority to CA000408885A priority patent/CA1203989A/en
Publication of EP0099938A1 publication Critical patent/EP0099938A1/en
Application granted granted Critical
Publication of EP0099938B1 publication Critical patent/EP0099938B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/027—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto steel structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0039—Methods for placing the offshore structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0039—Methods for placing the offshore structure
    • E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure

Definitions

  • the object of the invention is to create an underwater substructure system which also for greater depths the installation of a fixed, stable, anchored in the sea floor, constantly submerged substructure is permitted and is not exposed to wind and waves.
  • connection of the lower ends of the main beams to the respective support frame is preferably carried out via a universal joint.
  • the main girders For the installation and also for the stability of the installed substructure, the main girders contain ballast material in their lower ends and buoyancy material in their upper ends.
  • Cable winches with ropes on the individual parts of the system to be connected are also provided for the installation.
  • the main girders consisting of a tubular structure are suitable for the formation of storage containers, e.g. for crude oil.
  • the complete system shown in FIGS. 1 and 2 consists of the known, self-lifting platform 11, the legs 10 of which are connected to the legs 9 of an optional intermediate structure, which is placed on a fin-like structure 8, which in turn by means of double hinges 5 are connected to the upper ends of the five main supports 2 of the substructure system according to the invention.
  • the upper ends of the main beams 2 are connected by means of a horizontal connecting frame 3 Double hinges 6, 7 connected to each other.
  • a depth of 650 m below the water level is assumed for the sea floor, while the platform 11 is 39 m above the water level.
  • the substructure system according to the invention is constantly completely under water and below the effective range of the waves, as shown in FIG. 1 at the top left.
  • To the right of Fig. 1 is a sectional view of a main support, which is suitable with its dimensions for forming storage tanks for crude oil.
  • the lower ends of the main carrier 2 contain ballast material and the upper ends contain buoyant material, as indicated in FIG. 1 by 14 and 15.
  • the installation of the substructure system according to the invention is described below with reference to FIGS. 4 to 14.
  • the exact distances and quotas of the five base points A, B, C, are measured using a submarine (Smg).
  • D, E measured for the five main beams.
  • the piles 4 with the support frame 1 at the measured base points driven into the seabed, as shown in Fig.5.
  • the main beams 2 are brought floating over the base points and, thanks to their ballasts 14 and buoyancy materials 15, vertically next to the base points placed on the seabed as shown in Fig. 6.
  • the length of the individual carriers 2 is determined by the measured quotas of the individual base points, which in the example, according to FIG. 1, are up to 200 m apart.
  • a winch 16 with rope 17 is arranged in the lower end of each carrier 2.
  • the free end of the rope 17 is connected to the support frame 1 by means of the (Smg); thereupon, also with the help of the (Smg,), such a quantity of the ballast material 14 is drawn off via a hose line 20 that the carrier 2, thanks to the drive material 15 in its upper end, the position shown in FIG. 7 occupies.
  • the connecting frame 3 is brought into position according to FIG. 10 and connected to the carriers 2 by means of ropes 22, which can be done with the help of a diving bell 23 or with the help of the submarine (Smg).
  • the connecting frame 3 is lowered and the supports 2 are inclined so far that the hinge parts 6, 7 on the connecting frame 3 with the corresponding hinge parts 6, 7 on the supports 2 come into contact whereupon the bolts are inserted into the hinges, so that the position shown in FIG. 11 is created.
  • ballast material 14 and the buoyancy material 15 are brought into a ratio in the carriers 2 such that the carriers 2 are under their own stress and each carrier 2 is in equilibrium with its universal joint 13 on the supporting frame 1.
  • the 15 shows a modified mounting of the supports 2 on the support frame 1, with instead of the universal joint, the supports 2 are placed on the support frame 1 by gravity, with a corresponding hemispherical shape 13, is provided.
  • the substructure according to the invention can also be doubled by placing two substructure systems of this type on top of one another, the lower end of the lower system being designed as shown and the upper system being on the lower one by means of a fin-like structure 8 - as in FIG. 1 - can be attached,

Abstract

1. Underwater foundation system, adapted for great depths, for a self-lifting platform, and its installation in the sea, consisting of atleast three main supporting beams (2), the lower ends of which are each collocated oscillably on a supporting frame (1), which is anchored, by means of piles (5), in the sea floor, characterized by the fact that the upper ends of the main supporting beams (2) are connected to each other by means of a connecting frame (3) through double hinges (6,7).

Description

Stand der TechnikState of the art

Während für Wassertiefen bis 250-300 m im allge= meinen fixe Unterbaustrukturen bekannt sind, die entweder mittels Pfählen im Meeresboden befestigt sind, oder mit Schwerkraft darauf aufgesetzt sind, werden bislang für grössere Tiefen meist schwimmen= de oder halbschwimmende Tragstrukturen verwendet. Diese sind der Wirkung von Wind, Wellen und Strö= mungen ausgesetzt, weshalb die Verbindungen mit den fixen Strukturen, wie Bohrlochköpfe, Olleitun= gen, usw. in flexibler Form ausgeführt sein müs= sen, wozu komplizierte Kupplungen erforderlich sind.Whilst fixed substructure structures are generally known for water depths of up to 250-300 m, which are either attached to the seabed by means of piles or are placed on them by gravity, so far floating or semi-floating support structures have been used for greater depths. These are exposed to the effects of wind, waves and currents, which is why the connections to the fixed structures, such as borehole heads, oil pipes, etc., must be carried out in a flexible manner, which requires complicated couplings.

Aufgabe der ErfindungObject of the invention

Die Aufgabe der Erfindung besteht in der Schaf= fung eines Unterwasser-Unterbausystem, das auch für grössere Tiefen die Installation eines fixen, stabilen, im Meeresboden verankerten, ständig unter Wasser bleibenden Unterbaues gestattet und keinerlei Beanspruchung durch Wind und Wellen ausgesetzt ist.The object of the invention is to create an underwater substructure system which also for greater depths the installation of a fixed, stable, anchored in the sea floor, constantly submerged substructure is permitted and is not exposed to wind and waves.

Gegenstand der ErfindungSubject of the invention

Die Erfindung betrifft ein Unterwasser-Unterbau= system und seine Installation in grossen Tiefen für selbsthebende Plattformen im Meer, das aus drei oder mehr Hauptträgern besteht die ständig unterwasser bleiben und mit ihren unteren Enden je auf einem im Meeresboden mittels Pfähle ver= ankerten Tragrahmen schwingbar aufgesetzt sind und mit ihren oberen Enden mittels eines Verbin= dungsrahmens über Doppelscharniere miteinander verbunden sind, wobei die Beine der selbsttragen= den Plattform, oder einer Zwischenstruktur, auf dem Unterbausystem vorzugsweise über ein flossarti= ges Gebilde aufgesetzt sind, das ebenfalls mittels Scharniere mit den oberen Enden der Hauptträger verbunden ist.The invention relates to an underwater substructure = and its installation at great depths for self-lifting platforms in the sea, which consists of three or more main girders that remain constantly underwater and with their lower ends each placed on a supporting frame anchored in the seabed by means of piles and with their upper ends connected to each other by means of a connecting frame via double hinges, whereby the legs of the self-supporting platform or an intermediate structure are preferably placed on the substructure system via a floss-like structure, which is also connected to the upper ones by means of hinges Ends of the main beam is connected.

Die Verbindung der unteren Enden der Hauptträger mit dem jeweiligen Tragrahmen erfolgt vorzugsweise über ein Kardangelenk.The connection of the lower ends of the main beams to the respective support frame is preferably carried out via a universal joint.

Für die Installation und auch für die Stabilität des installierten Unterbaues enthalten die Hauptträ= ger in ihren unteren Enden Ballastmaterial und in ihren oberen Enden Auftriebsmaterial.For the installation and also for the stability of the installed substructure, the main girders contain ballast material in their lower ends and buoyancy material in their upper ends.

Für die Installation- sind ferner Seilwinden mit Seilen auf den einzelnen miteinander zu verbin= denden Teilen des Systems vorgesehen.Cable winches with ropes on the individual parts of the system to be connected are also provided for the installation.

Die aus einer Rohrstruktur bestehenden Haupttrager eignen sich für die Bildung von Lagerungsbe= hältern, z.B. für Rohöl.The main girders consisting of a tubular structure are suitable for the formation of storage containers, e.g. for crude oil.

Beschreibung einer Ausführungsform des Erfindungs= gegenstandes mit Bezug auf die ZeichnungenDescription of an embodiment of the invention with reference to the drawings

In den Zeichnungen zeigen:

  • Fig. 1 eine Seitenansicht eines kowpletten Systems mit durch Pfähle (4) im Meeresboden veran= kerten Tragrahmen (1) für die Hauptträger (2) des Unterbaues,mit fakultativer Zwi= schenstruktur (9) und mit selbsthebender Plattform (11);
  • Fig. 2 die um 90° gegenüber der Fig. 1 verdrehte Seitenansicht des gleichen Systems;
  • Fig. 3 eine Draufsicht auf das Unterbausystem nach den Figuren 1 und 2;
  • Figuren 4 bis 14 Installationsschritte des erfin= dungsgemässen Unterbausystems;
  • Fig. 15 eine abgeänderte Form des Aufsetzens der Hauptträger auf den Tragrahmen des Unterbau= systems.
The drawings show:
  • Fig. 1 is a side view of a Kowpletten system with anchored by piles (4) in the seabed = supporting frame (1) for the main girders (2) of the substructure, with an optional intermediate structure (9) and with a self-lifting platform (11);
  • Fig. 2 rotated by 90 ° compared to FIG. 1 Side view of the same system;
  • 3 shows a plan view of the substructure system according to FIGS. 1 and 2;
  • FIGS. 4 to 14 installation steps of the substructure system according to the invention;
  • Fig. 15 shows a modified form of placing the main beam on the supporting frame of the substructure = system.

Dar in den Figuren 1 und 2 dargestellte komplette System besteht aus der, an sich bekannten, selbsthe= benden Plattform 11, deren Beine 10 mit den Beinen 9 einer fakultativen Zwischenstruktur verbunden sind, die auf einen flossartigen Gebilde 8 aufgesetzt ist, welches seinerseits mittels Doppelscharniere 5 mit den oberen Enden der im gezeigten Beispiel fünf Haupt= träger 2 des erfindungsgemässen Unterbausystems ver= bunden sind. Die unteren Enden der Hauptträger 2 sind mittels eines Kardangelenks 13 je mit einem Trpgrah= ren 1 verbunden, der mittels Pfähle 4 im Meeresboden verankert ist. Die oberen Enden der Hauptträger 2 sind mittels eines horizontalen Verbindungsrabmens 3 über Doppelscharniere 6, 7 miteinander verbunden.The complete system shown in FIGS. 1 and 2 consists of the known, self-lifting platform 11, the legs 10 of which are connected to the legs 9 of an optional intermediate structure, which is placed on a fin-like structure 8, which in turn by means of double hinges 5 are connected to the upper ends of the five main supports 2 of the substructure system according to the invention. The lower ends of the main girders 2 are each connected to a Tr p grah = ren 1 by means of a universal joint 13, which is anchored in the seabed by means of piles 4. The upper ends of the main beams 2 are connected by means of a horizontal connecting frame 3 Double hinges 6, 7 connected to each other.

Im gezeigten Beispiel ist für den Meeresboden eine Tiefe von 650 m unter Wasserspiegel ange= nommen, während die Plattform 11 sich 39 m über dem Wasserspiegel befindet. Das erfindungsgemäs= se Unterbausystem ist ständig vollkommen unter= wasser und unterhalb des Wirkungsbereichs der Wellen, wie in Fig. 1 links oben eingezeichnet ist. Rechts neben der Fig. 1 ist eine Schnittan= sicht eines Hauptträgers gezeichnet, der mit sei= nen Abmessungen zur Bildung von Lagerungstanks für Rohöl geeignet ist.In the example shown, a depth of 650 m below the water level is assumed for the sea floor, while the platform 11 is 39 m above the water level. The substructure system according to the invention is constantly completely under water and below the effective range of the waves, as shown in FIG. 1 at the top left. To the right of Fig. 1 is a sectional view of a main support, which is suitable with its dimensions for forming storage tanks for crude oil.

Die unteren Enden der Hauptträger 2 enthalten Bal= lastmaterial und die oberen Enden enthalten Auf= triebsmaterial,wie in Fig. 1 mit 14 und 15 ange= deutet ist.The lower ends of the main carrier 2 contain ballast material and the upper ends contain buoyant material, as indicated in FIG. 1 by 14 and 15.

Die Installation des erfindungsgemässen Unterbau= systems ist nachstehend mit Bezug auf die Figu= ren 4 bis 14 beschriebene Zunächst werden, laut Fig. 4, mittels eines Unterseebootes (Smg) die ge= nauen Abstände und Quoten der fünf Basispunkte A, B, C, D,E für die fünf Hauptträger ausgemessen. Dann werden mittels eines Baischiffes die Pfähle 4 mit dem Tragrahmen 1 an den ausgemessenen Basis= punkten in den Meeresboden eingetrieben, wie in Fig.5 gezeigt ist. Die Hauptträger 2 werden schwimmend über die Basispunkte gebracht und dank ihrer Ballaste 14 und Auftriebsmaterialien 15 vertikal neben den Basispunkten

Figure imgb0001
auf den Meeresboden aufgestellt, wie in Fig. 6 gezeigt ist. Die Länge der einzelnen Träger 2 ist durch die ausgemessenen Quoten der einzelnen Basis= punkte bestimmt, die im Beispiel, laut Fig. 1 , bis zu 200 m voneinander entfernt sind.The installation of the substructure system according to the invention is described below with reference to FIGS. 4 to 14. First, according to FIG. 4, the exact distances and quotas of the five base points A, B, C, are measured using a submarine (Smg). D, E measured for the five main beams. Then the piles 4 with the support frame 1 at the measured base = points driven into the seabed, as shown in Fig.5. The main beams 2 are brought floating over the base points and, thanks to their ballasts 14 and buoyancy materials 15, vertically next to the base points
Figure imgb0001
placed on the seabed as shown in Fig. 6. The length of the individual carriers 2 is determined by the measured quotas of the individual base points, which in the example, according to FIG. 1, are up to 200 m apart.

Im unteren Ende eines jeden Trägers 2 ist eine Seilwinde 16 mit Seil 17 angeordnet. Das freie Ende des Seils 17 wird mit Hilfe des(Smg)mit dem Tragrahmen 1 verbunden; daraufhin wird, eben= falls mit Hilfe des(Smg,) über eine Schlauchlei= tung 20 eine solche Menge des Ballastmaterials 14 abgesogen, dass der Träger 2, dank des Auf= triebsmaterials 15 in seinem oberen Ende, die in Fig. 7 gezeigte Stellung einnimmt. Nun werden von den auf dem Kardangelenk 13 angebrachten Win= den 19 die Seite 18 abgezogen und mit dem Trag= rahmen 1 verbunden - siehe Fig. 8. Durch Betä= tigung der Winden 19 -über das U-Boot (Smg)-werden die Seile 18 wieder von den Winden 19 auf= gewickelt und damit der Träger 2 abgesenkt und mit seinem Kardangelenk 13 in den Tragrahmen 1 eingesetzt - siehe Fig. 9. Dank des Auftriebs= materials 15 in dem oberen Ende bleibt der Trä= ger 2 in vertikaler Lage.A winch 16 with rope 17 is arranged in the lower end of each carrier 2. The free end of the rope 17 is connected to the support frame 1 by means of the (Smg); thereupon, also with the help of the (Smg,), such a quantity of the ballast material 14 is drawn off via a hose line 20 that the carrier 2, thanks to the drive material 15 in its upper end, the position shown in FIG. 7 occupies. Now remove the side 18 from the winches 19 attached to the universal joint 13 and connect them to the supporting frame 1 - see Fig. 8 adjustment of the winches 19 - via the submarine (Smg) - the ropes 18 are wound up again by the winches 19 and thus the carrier 2 is lowered and inserted with its cardan joint 13 into the support frame 1 - see FIG. 9 Buoyancy materials 15 in the upper end of the carrier 2 remain in a vertical position.

Nun wird gemäss Fig. 10 der Verbindungsrahmen 3 in Stellung gebracht und mittels Seile 22 mit den Trägern 2 verbunden, was mit Hilfe einer Taucherglocke 23, oder mit Hilfe des U-Bootes (Smg), erfolgen kann. Durch Betätigung der Win= den 21 wird der Verbindungsrahmen 3 abgesenkt und dabei werden die Träger 2 soweit geneigt, dass die Scharnierteile 6, 7 auf dem Verbin= dungsrahmen 3 mit den entsprechenden Scharnier= teilen 6, 7 auf den Trägern 2 in Dingriff kom= men, worauf die Bolzen in die Scharniere einge= setzt werden, sodass die in Fig. 11 gezeigte Stellung entsteht.Now the connecting frame 3 is brought into position according to FIG. 10 and connected to the carriers 2 by means of ropes 22, which can be done with the help of a diving bell 23 or with the help of the submarine (Smg). By actuating the winches 21, the connecting frame 3 is lowered and the supports 2 are inclined so far that the hinge parts 6, 7 on the connecting frame 3 with the corresponding hinge parts 6, 7 on the supports 2 come into contact whereupon the bolts are inserted into the hinges, so that the position shown in FIG. 11 is created.

Nun kann die selbsthebende Plattform 11, entwe= der unmittelbar, oder wie im gernigten Beispiel über eine Zwischenstruktur mit Beinen 9 und flossartigem Gebilde 8 montiert werden.Now the self-lifting platform 11, either = immediately or, as in the preferred example, via an intermediate structure with legs 9 and fin-like structure 8 can be mounted.

Hierzu sind auf dem Gebilde 8 finden 24 mit Seilen 25 vorgesehen, deren freie Enden mit den oberen Enden der Träger 2 verbunden werden, so= dass das Gebilde 8 durch Betätigung der Win= den 24 abgesenkt werden kann und mittels Schar= niere 5 (Fig. 1) mit den Trägern 2 verbunden werden kann - siehe Figuren 12 und 13.For this purpose, 24 with ropes 25 are provided on the structure 8, the free ends of which are connected to the upper ends of the supports 2, so that the structure 8 can be lowered by actuating the winches 24 and by means of a kidney 5 (FIG 1) can be connected to the supports 2 - see FIGS. 12 and 13.

Nach der so erfokgten Installation werden die Kardangelenke 13 in den Tragrahmen 1 mittels Zement vergossen - siehe Fig. 14.After the installation has been carried out in this way, the universal joints 13 are poured into the supporting frame 1 by means of cement - see FIG. 14.

Zuletzt werden das Ballastmaterial 14 und das Auftriebsmaterial 15 in den Trägern 2 in ein solches Verhältnis gebracht, dass die Träger 2 unter Eigenspannung stehen und jeder Träger 2 mit seinem Kardangelenk 13 im Gleichgewicht auf dem Tragrahmen 1 steht.Finally, the ballast material 14 and the buoyancy material 15 are brought into a ratio in the carriers 2 such that the carriers 2 are under their own stress and each carrier 2 is in equilibrium with its universal joint 13 on the supporting frame 1.

Die Fig. 15 zeigt eine abgeänderte Lagerung der Träger 2 auf dem Tragrahmen 1, wobei anstel= le des Kardangelenkes ein Aufsetzen der Träger 2 mit Schwerkraft auf dem Tragrahmen 1, bei entsprechender halbkugelförmiger Formgebung 13, vorgesehen ist.15 shows a modified mounting of the supports 2 on the support frame 1, with instead of the universal joint, the supports 2 are placed on the support frame 1 by gravity, with a corresponding hemispherical shape 13, is provided.

Für noch grössere Tiefen als in Fig. 1 beispiels= weise angegeben ist, kann der erfindungsgemäs= se Unterbau auch verdoppelt werden, in dem zwei derartige Unterbausysteme übereinandergesetzt werden, wobei das untere Ende des unteren Systems wie gezeigt ausgeführt ist und das obere System auf das untere mittels eines flossartigen Ge= bildes 8 - wie in Fig. 1 - aufgesetzt werden kann,For even greater depths than indicated in FIG. 1, for example, the substructure according to the invention can also be doubled by placing two substructure systems of this type on top of one another, the lower end of the lower system being designed as shown and the upper system being on the lower one by means of a fin-like structure 8 - as in FIG. 1 - can be attached,

Es ist auch möglich, gemäss einer weiteren Aus= führungsform, zwischen den oberen und den unte= ren Enden des Unterbausystems horizontale Ver= bindungsbalken vorzusehen, die mit den Trägern 2 über Doppelscharniere 6, 7 verbunden werden.It is also possible, according to a further embodiment, to provide horizontal connecting bars between the upper and lower ends of the substructure system, which are connected to the beams 2 via double hinges 6, 7.

Claims (11)

1.) Unterwasser-Unterbausystem, geeignet für grosse Tiefen, für eine selbsthebende Plattform und seine Installation im Meer, dadurch gekenn= zeichnet, dass das System aus mindestens drei Hauptträgern (2) besteht, deren untere Enden je auf einem im Meeresboden mittels Pfähle (4) ver= ankerte Tragrahmen (1) schwingbar aufgesetzt sind und deren obere Enden mittels eines Verbin= dungsrahmen (3) über Doppelscharniere (6,7) mit= einander verbunden sind.1.) Underwater substructure system, suitable for great depths, for a self-lifting platform and its installation in the sea, characterized in that the system consists of at least three main girders (2), the lower ends of which are each supported on one in the seabed by means of piles ( 4) anchored supporting frames (1) are placed in a swingable manner and the upper ends of which are connected to each other by means of a connecting frame (3) via double hinges (6,7). 2.) Unterwasser-Unterbausystem nach Anspruch 1, dadurch gekennzeichnet, dass die selbsthebende Plattform (11), unmittelbar, oder über eine Zwi= schenstruktur (9), mittels eines flossartigen Ge= bildes (8) mit den oberen Enden des Unterbau= systems über Scharniere (5) verbunden ist.2.) Underwater substructure system according to claim 1, characterized in that the self-lifting platform (11), directly or via an intermediate structure (9), by means of a fin-like structure (8) with the upper ends of the substructure system is connected via hinges (5). 3.) Unterwasser-Unterbausystem, nach Anspruch 1, dadurch gekennzeichnet, dass die unteren Enden der Hauptträger (2) mit dem jeweiligen Tragrah= men (1) mittels eines Kardangelenkes (13) ver= bunden sind.3.) Underwater substructure system, according to claim 1, characterized in that the lower ends of the main carrier (2) with the respective support frame = men (1) by means of a universal joint (13) ver = are bound. 4.) System nach den Ansprüchen 1 und 3, da= durch gekennzeichnet, dass die Hauptträger (2) in ihren unteren Enden Ballastmaterial (14) und in ihren oberen Enden Auftriebsmaterial (15) enthalten.4.) System according to claims 1 and 3, da = characterized in that the main beams (2) contain ballast material (14) in their lower ends and buoyancy material (15) in their upper ends. 5.) System nach den Ansprüchen 1 bis 4, da= durch gekennzeichnet, dass jeder Hauptträger (2) nahe dem unteren Ende eine Seilwinde ( 16) mit Seil (17) enthält, wobei das freie Ende des Seils, zur Installation, von der Winde abge= wickelt, mit dem Tragrahmen (1) verbunden, und dann wieder aufgewickelt wird.5.) System according to claims 1 to 4, da = characterized in that each main beam (2) near the lower end contains a winch (16) with rope (17), the free end of the rope, for installation, from the The winch is unwound, connected to the support frame (1), and then rewound. 6.) System nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass auf dem am unteren Ende des Hauptträgers (2) angebrachten Kardangelenk (13) zwei Winden (19) mit Seilen (18) vorge= sehen sind, deren freie Enden, zur Installati= on, abgewickelt, mit dem Tragrahmen (1) verbun= den und dann wieder aufgewickelt werden.6.) System according to claims 1 to 5, characterized in that on the lower end of the main support (2) attached cardan joint (13) two winches (19) with ropes (18) are provided =, the free ends of which Installati = on, unwound, connected to the support frame (1) and then rewound. 7.) System nach den Ansprüchen 1 bis 6, da= durch gekennzeichnet,dass im Verbindungsrah= men (3) Seilwinden (21) mit Seilen (22) vorge= sehen sind, deren freie Enden zur Installation, abgewickelt, mit den oberen Enden der Hauptträ= ger (2) verbunden und dann wieder aufgewickelt werden.7.) System according to claims 1 to 6, da = characterized in that in the connecting frame = men (3) winches (21) with ropes (22) are provided =, the free ends of which are unwound for installation, connected to the upper ends of the main girders (2) and then rewound. 8.) System nach den Ansprüchen 1 bis 7, dadurch gekennzeichnet, dass nach erfolgtem Aufsetzen des Kardangelenkes (13) auf den Tragrahmen (1), dieser mit Zement ausgegossen wird.8.) System according to claims 1 to 7, characterized in that after the gimbal (13) has been placed on the support frame (1), this is poured with cement. 9.) System nach den Ansprüchen 1 bis 8, da= durch gekennzeichnet, dass die Hauptträger (2) mittels eines halbkugelförmigen Teils ( 13) (Fig.15) in einem entsprechend geformten Trag= rahmen (1) eingesetzt werden.9.) System according to claims 1 to 8, da = characterized in that the main carrier (2) by means of a hemispherical part (13) (Fig.15) are used in a correspondingly shaped support frame (1). 10.) System nach den Ansprüchen 1 bis 9, dadurch gekennzeichnet, dass die Hauptträger (2) mittels horizontaler Verbindungsbalken zwischen den obe= ren und unteren Enden der Träger (2) miteinan= der verbunden warden.10.) System according to claims 1 to 9, characterized in that the main beams (2) by means of horizontal connecting beams between the upper = ren and lower ends of the beams (2) were connected to each other. 11.) System nach den Ansprüchen 1 bis 10, da= durch gekennzeichnet, dass zwei erfindungsgemäs= se Unterbausysteme übereinander angeordnet sind.11.) System according to claims 1 to 10, characterized in that two substructure systems according to the invention are arranged one above the other.
EP19820106808 1982-07-28 1982-07-28 Under-water supporting construction and its installation in deep waters for self raising sea platforms Expired EP0099938B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8282106808T DE3270405D1 (en) 1982-07-28 1982-07-28 Under-water supporting construction and its installation in deep waters for self raising sea platforms
EP19820106808 EP0099938B1 (en) 1982-07-28 1982-07-28 Under-water supporting construction and its installation in deep waters for self raising sea platforms
AU86792/82A AU555240B2 (en) 1982-07-28 1982-08-05 Offshore platform
CA000408885A CA1203989A (en) 1982-07-28 1982-08-06 System of subacqueous foundation module to be installed at great depths, for offshore selflifting platforms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19820106808 EP0099938B1 (en) 1982-07-28 1982-07-28 Under-water supporting construction and its installation in deep waters for self raising sea platforms

Publications (2)

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EP0099938A1 true EP0099938A1 (en) 1984-02-08
EP0099938B1 EP0099938B1 (en) 1986-04-09

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EP19820106808 Expired EP0099938B1 (en) 1982-07-28 1982-07-28 Under-water supporting construction and its installation in deep waters for self raising sea platforms

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EP (1) EP0099938B1 (en)
AU (1) AU555240B2 (en)
CA (1) CA1203989A (en)
DE (1) DE3270405D1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4669917A (en) * 1984-12-04 1987-06-02 Norsk Hydro A.S. Fixed marine steel structure and procedure for assembly of the structure
WO1987004742A1 (en) * 1986-02-04 1987-08-13 Riles William G Offshore platform construction including preinstallation of pilings
US8157481B1 (en) 1994-05-02 2012-04-17 Shell Oil Company Method for templateless foundation installation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR102012031610B1 (en) * 2012-12-11 2022-03-08 Marcelo Caire SUB-FIXED FLOATING PLATFORM

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1423492A (en) * 1973-05-04 1976-02-04 Fluor Corp Offshore platform structures and method for the construction thereof
FR2359248A1 (en) * 1976-07-23 1978-02-17 Doris Dev Richesse Sous Marine Submersible columns for supporting platforms above water level - which rest on ball connectors to allow racking but maintain vertical alignment
DE2736937A1 (en) * 1977-08-16 1979-02-22 Howaldtswerke Deutsche Werft Offshore platform assembly - using guide ropes between base structure and deck structure during leg lowering operation
GB2054710A (en) * 1979-05-25 1981-02-18 Cjb Bearl & Wright Ltd Levelling seabed templates
DE2938181A1 (en) * 1979-09-21 1981-04-09 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Offshore oil drilling platform - having automatically controlled water pumps in feed to extend legs to provide stable footing on uneven sea bed

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1423492A (en) * 1973-05-04 1976-02-04 Fluor Corp Offshore platform structures and method for the construction thereof
FR2359248A1 (en) * 1976-07-23 1978-02-17 Doris Dev Richesse Sous Marine Submersible columns for supporting platforms above water level - which rest on ball connectors to allow racking but maintain vertical alignment
DE2736937A1 (en) * 1977-08-16 1979-02-22 Howaldtswerke Deutsche Werft Offshore platform assembly - using guide ropes between base structure and deck structure during leg lowering operation
GB2054710A (en) * 1979-05-25 1981-02-18 Cjb Bearl & Wright Ltd Levelling seabed templates
DE2938181A1 (en) * 1979-09-21 1981-04-09 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Offshore oil drilling platform - having automatically controlled water pumps in feed to extend legs to provide stable footing on uneven sea bed

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4669917A (en) * 1984-12-04 1987-06-02 Norsk Hydro A.S. Fixed marine steel structure and procedure for assembly of the structure
WO1987004742A1 (en) * 1986-02-04 1987-08-13 Riles William G Offshore platform construction including preinstallation of pilings
US8157481B1 (en) 1994-05-02 2012-04-17 Shell Oil Company Method for templateless foundation installation

Also Published As

Publication number Publication date
AU555240B2 (en) 1986-09-18
CA1203989A (en) 1986-05-06
AU8679282A (en) 1984-02-09
DE3270405D1 (en) 1986-05-15
EP0099938B1 (en) 1986-04-09

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