地震作用下PTMD对JZ20-2MUQ型导管架式海洋平台的减振研究

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Abstract This paper focus on the vibration reduction effect and the parameter optimization for viscoelastic pounding tuned massed damper(PTMD) on offshore jacket platform. Damping ratio and gap ratio are key parameters of PTMD. Optimized PTMD can sharply suppress the offshore jacket platform vibration in both displacement and acceleration. In addition, it's more efficient than TMD. A mass of simulations testify the project structure of control to be reasonable and effective, besides strong robustness. PTMD’s effective frequency range is twice as much TMD’s, it indicates PTMD has better control performance. The space requirement of mass be conditioned to 13.7% of TMD and displacement decreased in 75.3%, it can address the platform space requirements.

Key words： offshore platform earthquake viscoelastic pounding PTMD reduction ration effective frequency range;

Received: 11 May 2016 Published: 15 September 2017

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2017/V36/I18/238

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