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A prefabricated offshore fixed platform and its installation method

A technology for fixing platforms and installation methods, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve the problems of uneven force, easy gaps, and difficult control of gravel filling effects, etc., to increase stability, Installation is fast and smooth

Active Publication Date: 2015-12-09
CHINA ROAD & BRIDGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the foundation environment, the effect of gravel filling is not easy to control, and gaps are likely to appear between the bottom plate and the surface of the gravel layer, resulting in uneven stress and affecting the stability of the bottom.

Method used

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  • A prefabricated offshore fixed platform and its installation method
  • A prefabricated offshore fixed platform and its installation method
  • A prefabricated offshore fixed platform and its installation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] refer to Figure 1-3 , a prefabricated offshore fixed platform, including a main body 1 with a bottom plate 2, a positioning hole 4 is provided on the main body 1, and a movable positioning pile 3 that can extend to the bottom of the bottom plate 2 is arranged in the positioning hole 4, and on the main body 1 A plurality of conical piles 5 perpendicular to the bottom plate 2 are arranged on the outside of the bottom plate 2 , and the conical head 6 of each conical pile 5 extends out of the bottom plate 2 of the main body 1 . A through hollow explosive conduit 9 is provided in the conical pile 5, and an explosive tube 10 can be inserted, and an explosive 11 is arranged below the conical head 6. In this embodiment, the cone head 6 is a cone or a polygonal pyramid, and the cone head 6 is connected to the bottom plate 2 through a vertebral body 7, which is a cylinder or a polygonal prism.

[0039] refer to Figure 4-6 , is a prefabricated offshore fixed platform installat...

Embodiment 2

[0047] refer to Figure 7-8 , is another prefabricated offshore fixed platform, including a main body 1 with a bottom plate 2, a positioning hole 4 is arranged on the main body 1, and a movable positioning pile 3 that can extend to the bottom of the bottom plate 2 is arranged in the positioning hole 4, and the main body The bottom plate 2 of 1 is provided with a number of conical piles 5 perpendicular to the bottom plate 2 , and the conical head 6 of each conical pile 5 extends outside the bottom plate 2 of the main body 1 . In this embodiment, the cone head 6 is a cone or a polygonal pyramid. Other technical features are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0049] refer to Figure 9 , is a prefabricated offshore fixed platform, including a main body 1 with a bottom plate 2, a positioning hole 4 is provided on the main body 1, and a movable positioning pile 3 that can extend to the bottom of the bottom plate 2 is arranged in the positioning hole 4, and the main body 1 A plurality of conical piles 5 perpendicular to the bottom plate 2 are arranged on the outside of the bottom plate 2 , and the conical head 6 of each conical pile 5 extends outside the bottom plate 2 of the main body 1 . In this embodiment, the conical head 6 is a cone or a polygonal pyramid, and the conical head 6 and the bottom plate 2 are connected by a vertebral body 7, which is a cylinder or a polygonal prism. A chamfer 8 is provided at the joint between the vertebral body 7 and the bottom plate 2 . Other technical features are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a prefabricated fixed offshore platform and an installation method thereof. The platform comprises a body carrying gravel and positioning piles arranged on the body, wherein a plurality of conical piles perpendicular to a base plate of the body are arranged outside the base plate of the body, the conehead of each conical pile extends towards the outside of the base plate of the body, and the conehead of each conical pile is a circular cone or a polygonal pyramid. In the installation process, the platform is dragged to a preset foundation for construction, then the positioning piles are put down to enable the platform to be temporarily supported by the foundation, gravel is released to form a gravel layer on the surface of the foundation, and at last, the positioning piles are retracted to enable the platform to sit on the bottom and the conical piles to be inserted into the gravel layer. The prefabricated fixed offshore platform and the installation method thereof have the advantages that the platform can descend fast under the action of gravity to sit on the bottom, the conical piles can press the gravel when inserted to enable the gravel layer to be dense, and then stability is improved effectively after the platform sits on the bottom.

Description

technical field [0001] The invention relates to offshore concrete caisson foundation platform technology, in particular to a prefabricated offshore fixed platform and an installation method thereof. Background technique [0002] With the continuous development and utilization of the ocean, operators and equipment need to stay in the open sea or near islands and reefs for a long time, so it is necessary to build a fixed operating platform or supply platform. The common construction methods are as follows: 1. The floating island platform or caisson platform with steel structure is pre-set, towed to the operation site by tugboat, the floating island platform is fixed at sea by anchor mooring or piling, and the caisson platform is semi-submerged. The way of sitting on the bottom sinks to the bottom of the water, and then builds the superstructure required for operation or supply on the platform exposed to the water. This kind of steel structure floating island platform or caiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B17/02
Inventor 阚军丁桦孙耀国郑瑞芸王炜周秋萍连卫东盛国强
Owner CHINA ROAD & BRIDGE