DE2411598A1 - SUPPORT PILLAR FOR A CONSTRUCTION IN THE SEA - Google Patents

Description

Dr. F. Zumstein-sen. - Dr, E. Assmann Dr. R. Koenigsberger - DIpI.-Fhys. R. Holzbauer - Dr. F. Zumsteln Jun.

PATENT LAWYERS

TELEPHONE: COLLECTIVE NO. 225341 8 MUNICH 2. TELEX 529979 BRÄUHAUSSTRASSE 4 TELEGRAMS: ZUMPAT

CHECK ACCOUNT: MUNICH 91139-809, BLZ 70010080

BANK ACCOUNT: BANKHAUS H. AUFHÄUSER ACCOUNT NO. 397997, bank code 7O0 306 OO

3 / Li
T049-108

Mitsui Shipbuilding and Engineering Co.Ltd,

Tokyo

Support pillars for one located in the sea

construction

The invention relates to a support pillar for a structure located in the sea, for example for a work platform for carrying out work below the surface of the water. There is already a buttress known whose Foot can be firmly embedded in the seabed. However, it is difficult to firmly fit such a buttress into one to let in soft seabed and to pull it out again when it is deeply inserted into such a soft seabed is.

It is therefore the task on which the invention is based to deliver a buttress that can be securely fixed on a seabed consisting of a soft soil

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can and without any anchor vertical and horizontal loads can withstand.

The support pillar according to the invention is characterized in that at its lower end a buoyancy tank and one of the The lower surface of this tank is provided with a vertical end wall for controlling the buoyancy and a device, Introduce compressed air into the space under the buoyancy tank, so that the buttress is controlled by the buoyancy and Due to the formation of air cushions under the buoyancy tank it can be easily pulled out and into an uneven, sloping slope Ground can be firmly embedded and detached from this again.

In the following an example, preferred embodiment of the invention is explained in more detail with reference to the accompanying drawing:

1 to 3 show the structure of an embodiment of the invention Buttress;

Fig. 4 shows an enlarged cross-sectional view of the essential Part of the embodiment of the invention shown in Figures 1 to 3;

FIG. 5 shows a perspective view of the in FIG. 4 illustrated essential part of the embodiment of the support pillar according to the invention. .

As shown in the drawing, the buttress has 1 at its lower end a buoyancy tank 2 with several watertight sub-compartments 5, which are supported by a base plate 3 and part walls 4 are separated from one another. The buoyancy of the tank 2 can with. Controlled by ballast water 7, which is supplied through tubes 6. An annular cutting edge or end wall 9 extends vertically from the edge the bottom of the tank 2 down and forms a space

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between the bottom of the tank and the soft seabed 8. Pipes 10 are connected to the space under the buoyancy tank, through which air can be introduced into this space.

In Fig. 1, a support pillar is shown, which in a buoyancy B and a weight P with P> B is lowered to the sea floor. After the buttress reaches the seabed has, as it is shown in Fig. 2, the buoyancy B is controlled with the help of ballast water 7 so that a counterforce R (P «B + R) results. To pull the buttress out of the seabed, pressurized air is passed through the pipes 10 passed between the bottom plate of the tank and the seabed. Furthermore, pressurized air is pumped through the pipes 10a inside the end wall into the soft seabed, around a easy separation and lower frictional resistance.

From the above it can be seen that the support pillar according to the invention on a soft seabed, for example with mud deposits, and even on a sloping seabed, and can be easily pulled out again.

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Claims (1)

Claim Support pillars for a structure in the sea, characterized in that at the lower portion of the pillar a buoyancy tank with watertight Sub-compartments is provided that an end wall extends from the edge of the bottom of the buoyancy tank downward, and a device to direct ballast water into the sub-compartments, and a device are provided to feed compressed air into the To pump space inside the end wall. 4Q9839 / 0303