【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。更多还原

【Abstract】 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.更多还原