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Self-resetting jacket offshore platform structure system based on built-in swing column

A technology of offshore platforms and swinging columns, which is applied in basic structure engineering, underwater structures, buildings, etc., can solve problems such as weak rigidity, and achieve the effects of enhancing energy consumption capacity, good vibration reduction effect, and enhancing integrity

Inactive Publication Date: 2019-06-21
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing schemes only set the swing column on the side with weaker rigidity of the offshore platform, which can only control large displacement and large deformation in one direction

Method used

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  • Self-resetting jacket offshore platform structure system based on built-in swing column
  • Self-resetting jacket offshore platform structure system based on built-in swing column
  • Self-resetting jacket offshore platform structure system based on built-in swing column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as figure 1 , figure 2 , Figure 5-17 , Figure 24-26 As shown, the present invention provides a self-resetting jacket offshore platform structure system based on built-in swing columns, which includes an offshore platform whose bottom end is fixed on the seabed foundation 5, and swing columns 4 are arranged between the jackets 1 of the offshore platform. The swinging column is assembled with a composite structure, including an inner steel tube column 42, an outer steel tube 41 sleeved on the side wall and bottom of the inner steel tube column. The diameter of the inner steel tube column is slightly smaller than the inner diameter of the outer steel tube. The gaps between them are filled with viscous damping material 43 to reduce the dynamic response of the swing column structure under the action of horizontal external force.

[0073] Four strip-shaped steel plates 44 are welded on the outer wall of the outer steel pipe along the central axis of the swing colum...

Embodiment 2

[0095] Such as image 3 , 4 and Figure 18-23 The difference between the self-resetting jacket offshore platform structure system based on the built-in swing column of the present invention and Embodiment 1 lies in that the metal damper and the jacket are fixedly connected by several sets of springs.

[0096] One end of the spring is welded to the spring assembly base 224, the center of the spring assembly base and the side wall of the octagonal fixed steel ring is affixed, and the spring assembly base and the assembly backplate of the energy-dissipating metal web are respectively located on the octagonal fixed steel ring. Fasten the octagonal fixed steel ring on both sides of the side of the ring; the other end of the spring is welded and fixed to the movable clamp 228 to be fixed to the jacket. The number of each group of springs is four, and the four springs are arranged at 90° to each other, and each group of springs is sequentially fixed to the metal damper at a certain...

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Abstract

The invention belongs to the technical field of building structures for offshore platforms, and relates to a self-resetting jacket offshore platform structure system based on a built-in swing column.The system comprises a offshore platform, rigid chain rods, springs, the swing column, a spherical hinge support, a tuned mass damper and metal dampers; the bottom end of the offshore platform is fixedly arranged on a foundation, and the swing column is arranged at the center positions of the interiors of jackets and is hinged to the seabed foundation through the spherical hinge support; the swingcolumn adopts a novel sleeve structure system, the position between an inner column body and an outer pipe is filled with a viscoelastic damping material, and the tuned mass damper is arranged at thetop end of the column; and the rigid pull rods or the springs are connected to the swing column and the offshore platform through the metal dampers outside the swing column. The system has the advantages that the swing column controls large displacement and large deformation in all the directions of the offshore platform, so that the interlayer deformation tends to be uniform, an offshore platform structure is integrally stressed, the overall collapse of the offshore platform caused by local buckling failure can be avoided, and therefore a better damping effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of building structures for offshore platforms, and relates to a self-resetting jacket offshore platform structure system based on built-in swing columns. Background technique [0002] my country's sea areas are rich in oil and gas resources. With the increasing demand for energy in economic construction, offshore oil and gas exploration and development has good development prospects and huge development potential. As the infrastructure for marine resources development, the offshore platform is the main structural form of the offshore platform in the middle and shallow seas. It fixes the prefabricated jacket at sea by passing the piles through the conduit legs. The jacket and piles are the main load-bearing components, and other equipment floors and work areas are located on the platform. Under the dynamic load of marine environment such as wind, wave, current, ice and earthquake, the vibration response of ...

Claims

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Application Information

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IPC IPC(8): E02B17/00E02B17/02
CPCE02B17/02E02B17/00
Inventor 张纪刚赵迪刘锦昆张宗峰刘菲菲张君博王胜朱宝君
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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