2011, Volume 13, Issue 5
Strategic Study of CAE >> 2011, Volume 13, Issue 5
The measurement and analysis of ice induced vibration of JZ9-3WHPB oil platform in Bohai Sea
1.CNOOC Energy Technology & Services Limited, Beijing Branch, Beijing 100027,China;
2.China National Offshore Oil Corporation, Beijing 100010, China;
3.Tianjin Co.of CNOOC, Tianjin 300452, China
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Abstract
Based on the structure and layout of the untended JZ9-3WHPB platform, remote controllable ice induced vibration monitoring system was designed and installed on JZ9-3WHPB platform to record the vibration of the structure so as to learn its dynamic characteristics. Short time Fourier transform was employed to study the temporal variations and mode frequencies of the vibration. Vibration mode was analyzed by comparison of the phase difference between the vibrations of the upper and lower deck and applying bandpass filtering to the signal. Based on the count and analysis of the maximum amplitude and duration of the vibrations, tide and current of the water, and the structure of the platform, the defects of anti-ice induced vibration structure were analyzed, and ice resistant proposals were presented.
Keywords
ffshore platform ; sea ice of Bohai Sea ; ice induced vibration ; vibration acceleration ; short time Fourier transform
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References
[ 1 ] 欧进萍,段忠东,王刚,等.海冰作用下平台结构自激振动的参数分析与响应的数值计算[J].工程力学,2001,18(5):8-18. link1
[ 2 ] ue Qianjin,Bi Xiangjun.Ice-induced jacket structure vibration in Bohai Sea [ J ] .Journal of Cold Regions Engineering, 2000 , 14 ( 2 ) : 81 -92. link1
[ 3 ] Duan Zhongdong, Ou Jinping,Spencer B F,et al.Investigation of ice forces on jacket platform structures: In-situ measured data on JZ20 -2 -1Platform in the Bohai Sea[ C] //15th ASCE Engineer- ing Mechanics Conference.New York: Columbia University, June 2 -5 , 2002.
[ 4 ] 岳前进,毕祥军,于晓,等.锥体结构冰激振动与冰力函数[J].土木工程学报,2003,36(2):16-19. link1
[ 5 ] Matlock H, Dawkins W P.Analytical model for ice-strcuture inter- action [ J] .J Eng Mec, 1971 ,97 :1083 -1092. link1
[ 6 ] Maattanen M.Stability of self-excited ice-induced structural vibra- tion[ C] //4th International Conference on Port and Ocean Engi- neering Under Arctic Conditions.Newfoundland, 1977 : 684 - 694.
[ 7 ] 欧进萍,肖仪清,黄虎杰,等.海洋平台结构实时安全监测系统[J].海洋工程,2001,19(2):1-6. link1
[ 8 ] 中国海洋石油总公司.中国海海冰条件及应用规定(Q/HSn3000-2002)[S].2002.
[ 9 ] 张运良,林皋,王永学,等.冰激柔性锥体振动实验研究[J].大连理工大学学报,2004,44(6):877-882. link1
[10] Jin D P, Hu H Y.Ice-induced non-linear vibration of an offshore platform [ J ] .Journal of Sound and Vibration, 1998 , 214 ( 3 ) : 431 -442. link1
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