Ocean platform shock mitigation system

A technology of shock absorption system and offshore platform, which is applied in the direction of earthquake prevention, construction, artificial island, etc., can solve the problems of high rigidity and inconspicuous effect, and achieve the effect of enhancing the ability of tsunami

Inactive Publication Date: 2014-02-12
QINGDAO TECHNOLOGICAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Adding dampers or anti-buckling supports inside the structure can also play a certain role in reducing vibration, but the effect is not obvious. It still needs to be combined with vibration isolation technology to play a role. However, there is no suitable place to add dampers inside the platform structure due to its high rigidity.

Method used

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  • Ocean platform shock mitigation system
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  • Ocean platform shock mitigation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 As shown, the offshore platform shock absorption system of the present invention includes a support platform 1, and the support platform 1 is connected with a shock absorber; the shock absorber includes a transverse brace I2, and the transverse brace I2 is fixedly connected with the support platform 1, and the transverse brace The two ends of the rod I2 are respectively hinged to the vertical strut I4, and the vertical strut I4 is provided with a damper I3, and the damper I3 is hinged to the vertical strut I4 and divides the vertical strut I4 into upper and lower parts.

[0031] The damper I3 is arranged vertically, and the damper I3 adopts a shape memory alloy damper.

[0032] Result analysis under the action of Tianjin wave: set up monitoring nodes on the offshore platform damping system.

[0033] Table 1 Displacement of each node under the action of Tianjin wave:

[0034]

[0035] Table 2 The acceleration of each node under the action of Tianjin wa...

Embodiment 2

[0045] like figure 2 As shown, the damping device also includes a transverse strut II5, one end of the transverse strut II5 is fixedly connected to the top of the support platform 1, and the other end is hinged to the vertical strut II7, and the transverse strut II5 is provided with a damper II6, and the damper II6 is hinged with the transverse strut II5 and divides the transverse strut II5 into left and right parts; the bottom end of the vertical strut II7 is hinged with the transverse strut I2. The damper II6 is set laterally.

[0046] Both damper Ⅰ3 and damper Ⅱ6 use shape memory alloy dampers.

[0047] Others are with embodiment 1.

Embodiment 3

[0049] like image 3 As shown, the damper I3 adopts a viscous damper, and the viscous damper includes an oil cylinder 7, and a piston 9 is arranged in the oil cylinder 7, and the two ends of the piston 9 are connected to the piston rod 8.

[0050] Others are with embodiment 1.

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Abstract

The invention relates to a shock mitigation system, in particular to a shock mitigation system applied to an ocean platform. The ocean platform shock mitigation system comprises a supporting platform (1) connected with a shock mitigation device. The shock mitigation device comprises a transverse supporting rod I (2) fixedly connected with the supporting platform (1), two ends of the transverse supporting rod I (2) are hinged to vertical supporting rods I (4), dampers I (3) are arranged on the vertical supporting rods I (4), and the dampers I (3) are hinged to the vertical supporting rods I (4) and divide the vertical supporting rods I (4) into upper portions and lower portions. By means of the shock mitigation system, overall capacity for a guide pipe frame type ocean platform structure to resist external load is improved, capacity of resisting to ice load, wave load, wind load and earthquake load is greatly improved, even capacity of resisting tsunami is greatly improved, and ocean platform structure damage caused by damage to local rods can be avoided.

Description

technical field [0001] The invention relates to a shock absorbing system, in particular to a shock absorbing system applied on an ocean platform. Background technique [0002] An ocean platform is a structural device of ocean engineering, which provides a place for offshore operations and living for the development and utilization of ocean resources. Global economic development increasingly requires the development and utilization of marine resources. As the infrastructure for resource development, marine platforms are in harsh and complex environments and will be affected by various loads. The loads that cause vibration and damage to offshore platforms mainly include earthquakes, ice loads, waves, wind and machines and equipment on the platform. Among them, the destructive ability of earthquake is huge and unpredictable. The vibration of the offshore platform will make the workers panic, and even lead to the fatigue damage of the structure, causing major disasters such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E02B17/00
Inventor 张纪刚禚焕雯王胜江志伟宁伟刘振华
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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