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Ice-loading vibration isolation on sea platform

An offshore platform, vibration isolation technology, applied in water conservancy projects, artificial islands, building components, etc.

Inactive Publication Date: 2006-08-16
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the existing ice-borne vibration isolation methods, the purpose of the present invention is to provide an ice-borne vibration isolation method for offshore platforms that can basically not change the original design of the platform and can effectively reduce vibration

Method used

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  • Ice-loading vibration isolation on sea platform

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Embodiment Construction

[0009] The present invention is specifically described below in conjunction with accompanying drawing:

[0010] An ice-borne vibration isolation method for an ocean platform, such as figure 1 As shown, an elastic vibration isolation device 2 is coated on the outside of the offshore platform foundation pipe string 1 near the sea surface. The elastic vibration isolation device 2 can be selected from rubber, plastic or other elastic materials with low density. The elastic vibration isolation device floats on the above the water and can move up and down relative to the foundation pipe string 1.

[0011] When flowing ice gathers around the foundation pipe string 1, the ice force load first acts on the elastic vibration isolation device 2, and then it can act on the platform structure after the vibration isolation device attenuates, achieving effective vibration reduction and isolation effects.

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Abstract

This is an ice load vibration isolation method for ocean platform. Wrap an elastic vibration isolation device outside of the base pier, which is floatable along the pier. Ice load forced on the pier will be attenuated by the device.

Description

technical field [0001] The invention relates to an ice-loaded vibration isolation method for an ocean platform. Background technique [0002] In the northern waters of my country such as the Bohai Sea, the offshore platform will be affected by the flowing ice, which will cause the platform to vibrate. When the spectrum of this action contains or is close to the natural vibration period of the structure, it will cause the self-excited 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 improved as much as possible when building the platform. Designed to dampen platform vibrations caused by ice loads. Most of the current practice is to use vibration isolation technology similar to that in buildings, which is to isolate a certain position below the working deck of the platform from the foundation below it with rubber vibration isolation pads to block the high-frequency e...

Claims

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Application Information

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IPC IPC(8): E02B17/00E04B1/98
Inventor 丁桦时忠民
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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