导管架式海洋平台磁流变阻尼隔震结构的模型试验
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摘要
针对渤海JZ20-2MUQ导管架式海洋平台结构,进行1∶10比例模型的振动台试验。首先通过扫频分析得到模型结构的基本力学性能和参数;然后进行隔震装置性能试验,确定控制参数;最后对模型结构进行振动台试验研究,考查三种地震作用下的结构反应。试验结果表明:导管架式海洋平台结构的磁流变阻尼隔震方案对于减少导管架结构的振动、平台甲板的加速度和隔震层相对位移是非常有效的。
The test model of isolation system of JZ20-2MUQ offshore platform jacket structure with MR (magneto-rheological) damper in the Bohai Sea is set up with a scale of 1∶10. Smart control experiment for this isolation system is carried out. First, several mechanics parameters and design parameters of isolation device in test are put forward on the base of frequency analysis. Then, performance tests of isolating device are performed, and the parameters of MR damper and isolator are determined. Finally, the test of the structure model is conducted under three kinds of earthquake waves. The results show that: the scheme of offshore platform jacket structure with MR damper as isolator is of efficiency for reducing vibration of jacket structure, mitigating acceleration of platform duck and decreasing drift of isolation layer.
The test model of isolation system of JZ20-2MUQ offshore platform jacket structure with MR (magneto-rheological) damper in the Bohai Sea is set up with a scale of 1∶10. Smart control experiment for this isolation system is carried out. First, several mechanics parameters and design parameters of isolation device in test are put forward on the base of frequency analysis. Then, performance tests of isolating device are performed, and the parameters of MR damper and isolator are determined. Finally, the test of the structure model is conducted under three kinds of earthquake waves. The results show that: the scheme of offshore platform jacket structure with MR damper as isolator is of efficiency for reducing vibration of jacket structure, mitigating acceleration of platform duck and decreasing drift of isolation layer.
引文
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11橡胶隔震支座力学性能检测报告[R].汕头合泰隔震器材有限公司,2003
2欧进萍,龙旭,肖仪清,吴斌.导管架式海洋平台结构阻尼隔振体系及其减振效果分析[R].地震工程与工程振动,2002,22(3):163—169
3欧进萍,邹向阳,丁建华,肖仪清.JZ20-2MUQ平台结构耗能减振模型试验[R].“九五”国家自然科学基金重大项目大型复杂结构的关键科学问题及设计理论论文集.上海:同济大学出版社,2000,270—279
4JZ20-2MUQ平台结构设计报告.中国石油海上工程股份有限公司[R],1990:1—35
5王刚,欧进萍.海洋平台结构振动的AMD主动控制分析[R].“九五”国家自然科学基金重大项目大型复杂结构的关键科学问题及设计理论论文集,2001:15—23
6Spencer B F,Dyke S J,Sain MK,Carlson J D.Phenomenolog-ical Model of a Magnetorheological Damper[J].To appear in ASCE Journal of Engineering Mechanics
7Spencer B F,Carlson J D,Sain M K,Yang G.On the Current Status of Magnetorheological Damper Protection of Full-Scale Structures[J].Proceedings of the1997American Control Con-ference,Albuquerque,New Mexico
8Dyke S J,Spencer B F,Sain MK,Carlson J D.An Experimen-tal Study of MR Dampers of Seismic Protection[J].To appear in Smart Materials and structures:Special Issue on Large Civil Structures
9关新春.磁流变液及其智能结构减振驱动器的理论与试验研究[D]:[学位论文].哈尔滨:哈尔滨建筑大学,2000:77—93
10王刚.海洋平台结构的冰致振动机理与智能控制[D].哈尔滨工业大学学位论文,2002:1—63
11橡胶隔震支座力学性能检测报告[R].汕头合泰隔震器材有限公司,2003
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