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Partially buoyant offshore platform for offshore wind power, bridges and marine structures and construction method

A technology for offshore platforms and construction methods, which is applied to bridges and marine buildings with local buoyancy and construction, offshore wind power, and can solve the problems of difficult construction and high foundation cost

Active Publication Date: 2016-03-30
黄灿光 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to solve the problems of high foundation cost and difficult construction of existing offshore wind power and other marine (hydraulic) structures in the environment of thick soil layers (5 meters to 80 meters or more), and provide Partially buoyant offshore platform for offshore wind power, bridges and marine structures supporting offshore wind turbines and / or bridges and / or marine building structures

Method used

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  • Partially buoyant offshore platform for offshore wind power, bridges and marine structures and construction method
  • Partially buoyant offshore platform for offshore wind power, bridges and marine structures and construction method
  • Partially buoyant offshore platform for offshore wind power, bridges and marine structures and construction method

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Embodiment 1

[0104] The purpose of construction in this embodiment is to install local buoyancy offshore platforms 10 (hereinafter referred to as partially buoyant offshore platforms 10) for offshore wind power, bridges and marine structures in a sea area where the water depth is 25 meters and the seabed soil layer is about 30 meters. bed, and install a 3MW horizontal axis wind turbine on the partially buoyant ocean platform 10.

[0105] "Partially buoyant" offshore platforms have hollow buoyancy cylinders supported by the buoyancy of the water. The buoyancy of the buoyancy tube offsets the weight of some marine structures, and the buoyancy of the water bears about half the weight of the marine structures, which can reduce the rigidity of the supporting structure of the offshore platform, making its basic vibration frequency avoid the peak frequency of the earthquake, thereby improving the distance between the platform foundation and the foundation. insulation.

[0106] When an earthquake...

Embodiment 2

[0120] Bridges can also be supported on the partially buoyant ocean platform 10 . like Figure 12 as shown, Figure 12 Shown is the use of two buoyancy tubes connected under a cap to form the foundation of the pier. Figure 12 Only two buoyancy tubes 1 supporting the bridge are shown. Of course, three or six buoyancy cylinders 1 can also be symmetrically arranged. Multiple buoyancy cylinders 1 are jointly supported with caps, and bridge piers 35 are supported on the caps, and pier beams 36 are arranged on bridge piers 35. The buoyancy cylinders 1 have a diameter of 8 meters, a height of 30 meters, and a wall thickness of 0.4 meters. The water depth is 30 meters, and the soil layer is about 25 meters thick. The buoyancy cylinder 1 is fixed and embedded in the seabed bedrock 40 or the force-bearing layer 14 through the small-caliber bored pile 21, which is similar to that of the first embodiment.

Embodiment 3

[0122] Marine structures can also be supported on the partially buoyant marine platform 10 . like Figure 13 As shown, the partially buoyant ocean platform 10 is a grid structure, and the buoyancy cylinders 1 are respectively arranged on grid points of the grid; marine structures are supported on the partially buoyant ocean platform 10 . The partially buoyant ocean platform 10 is connected to the building structure secondary beam 33 through the lower building structure connecting beam 34 and the upper building structure main beam 32 . It can also be that multiple partially buoyant ocean platforms 10 form a multi-platform system by connecting beams, for example, as Figure 14 As shown, three sixteen buoyancy cylinder partial buoyancy ocean platforms 10 form a multi-platform system through connecting beams, and the multi-platform system can support marine buildings.

[0123] Prestressed concrete partial buoyancy ocean platform 10 supporting marine building structures or underw...

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Abstract

The invention discloses a local buoyancy ocean platform of offshore wind power, a bridge and an ocean building, and a construction method. The platform comprises at least one buoyancy cylinder, wherein the buoyancy cylinders are arranged vertically; the bottoms of the buoyancy cylinders are conical; and the buoyancy cylinders are hollow cylinders. Buoyancy of the buoyancy cylinders can be used for offsetting the weight of partial hydraulic buildings; small-bore bored piles or small-bore driven piles are arranged at the bottoms of the buoyancy cylinders, and fixed with seabed bed rock or a supporting layer, and support an external force together with a soil layer at the conical bottoms of the buoyancy cylinders; a tilting load borne by a whole foundation is converted into a vertical pressing and up-pull load of a single buoyancy cylinder foundation by a multi-buoyancy-cylinder space structure; the bearing capacity and the tilting resistance of the foundation are very high; multiple platforms can be connected into a multi-platform system; the platform can be cast in land, prefabricated, or assembled on a coast, and then hauled, towed and floated to a mounting position; and the platform is applied to ocean green energy sources such as the offshore wind power, the bridge and the ocean building with a soil layer of above 5m and water depth of about 5m to 50m, and has great potential economic benefits.

Description

technical field [0001] The invention relates to an ocean platform and a construction method thereof, in particular to an offshore wind power, bridge and ocean structure partial buoyancy ocean platform and a construction method. Background technique [0002] Geological conditions, wind and wave loads and water depth of underwater buildings determine the foundation form of underwater buildings. Generally, the foundation of large-scale underwater buildings accounts for 25% to 40% of the overall cost. For moderate to deep water foundations above 30 meters, the load force generated by the marine environment should be considered, such as the huge horizontal force generated by typhoons, huge waves, and high tides, which has become an important control condition that must be considered in its design and construction. [0003] The foundation types of offshore wind turbines in deep water areas are mostly floating platforms, shallow water areas are mainly pile foundations or gravity fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B17/00
Inventor 黄灿光陈立强
Owner 黄灿光
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