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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摘要研究了地震作用下粘弹性碰撞调谐阻尼器（PTMD）对JZ20-2MUQ型海洋平台结构的振动控制问题，并与传统的TMD做了对比。附加阻尼和间隙比是PTMD对JZ20-2MUQ型海洋平台结构减震是否有效的两个关键参数。设置合适的附加阻尼和间隙比的PTMD，能充分发挥高频激励下的碰撞减振优势，并且避免低频激励下对结构产生的“负作用”。无论从位移还是加速度的角度，PTMD都大幅减轻了海洋平台结构的响应，且效果要优于TMD。PTMD对海洋平台控制的鲁棒性很好，同等控制要求下PTMD的其有效频率带宽是TMD的2倍左右。PTMD的质量块位移被有效限制，最优PTMD质量块的位移比TMD极值下降了75.3%，而安装空间只有TMD的13.7%左右，可以满足JZ20-2MUQ型海洋平台结构的安装需求。

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关键词 ：海洋平台, 地震作用, 粘弹性, 碰撞, PTMD, 减振率, 有效频率带宽

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;

收稿日期: 2016-05-11 出版日期: 2017-09-15

引用本文:

李英娜1.2，张井财3，薛启超3，何建3，安宁3. 地震作用下PTMD对JZ20-2MUQ型导管架式海洋平台的减振研究[J]. 振动与冲击, 2017, 36(18): 238-244.
LI Yingna1.2 ZHANG Jingcai3 XUE Qichao3 HE Jian2 AN Ning3. Research on PTMD’s Vibration Reduction Effect On JZ20-2MUQ Offshore Jacket Platform. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(18): 238-244.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2017/V36/I18/238

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