Method for resisting float ice vibration of above-water platform and equipment dedicated therefor

A water platform and vibration isolation technology, which is applied to equipment for reducing ship movement, equipment for increasing stability of ships, ships, etc., can solve the problem that the anti-vibration method is difficult to achieve the ideal effect, etc., to achieve simple implementation, improve service life, and prevent The effect of seawater erosion

Active Publication Date: 2006-10-11
CNOOC RES INST +1
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Problems solved by technology

This method has a certain vibration isolation effect, but because structures such as water-resisting con

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  • Method for resisting float ice vibration of above-water platform and equipment dedicated therefor
  • Method for resisting float ice vibration of above-water platform and equipment dedicated therefor
  • Method for resisting float ice vibration of above-water platform and equipment dedicated therefor

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Embodiment Construction

[0015] Please see Figure 1, figure 2 As shown, it is an anti-icing vibration device for a water platform provided by the present invention, which mainly includes an ice-breaking cone 2 arranged outside the leg column 1 of the water platform, and a partition between the leg column 1 and the ice-breaking cone 2 Vibration damping device 3. Specifically, in order to make the ice-breaking cone 2 effectively contact the ice surface, the ice-breaking cone 2 should be arranged near the water surface of the leg column 1 of the water platform, that is, within the range of the upper and lower tide levels on the horizontal surface. The shape of the inner wall of the ice-breaking cone 2 can be determined according to the geometry of the vibration isolation and vibration reduction device 3, and the shape of the outer wall of the ice-breaking cone 2 can be a traditional conical shape, or other shapes, such as an icebreaker shape. The ice-breaking cone 2 can be fixed on the leg column 1 by t...

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Abstract

The invention discloses an anti ice vibration method of above-water platform and relative special device, which comprises: mounting a anti ice vibration of above-water platform in the water near the legs of above-water platform; said anti ice vibration device contains one ice-breaker prick and a vibration insulated damping device between the legs and the ice-breaker prick. With said invention, the ice force load of marine platform can be damped by said device to force on the platform, and via selecting parameters, it can be effectively damped. The invention has simple process, without changing former structure of platform, which can be directly mounted on the former platform. In addition, a sealing device is arranged between the legs and the inner wall of ice-break prick, to avoid seawater eroding inner space, to improve its service life.

Description

technical field [0001] The invention relates to an anti-ice vibration method and special equipment for an above-water platform, in particular to an anti-ice-vibration method and special equipment for an over-water platform that can basically not change the original design of the platform and can effectively reduce vibration. Background technique [0002] Water platforms (especially ocean platforms) in cold regions will be affected by flowing ice. Take my country's Bohai Sea as an example, this effect will cause vibrations on the water platform. When the frequency spectrum of this effect contains or is close to the natural vibration period of the structure, it will cause the steady vibration of the platform, accelerate the fatigue failure of the platform and affect the normal life and work of the personnel on the platform, so it should be passed as much as possible when building the platform Improved design to reduce platform vibrations caused by ice loads. At present, some ...

Claims

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Application Information

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IPC IPC(8): B63B35/44B63B39/00
Inventor 时忠民丁桦
Owner CNOOC RES INST
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