海洋导管架在复杂载荷作用下的动态响应
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摘要
研究了海洋导管架自由振动及复杂载荷作用下的动力学行为。利用ANSYS软件建立海洋导管架平台三维模型,针对海洋导管架的结构及载荷特点,将导管架结构离散成空间梁和板有限元单元结构,采用结构模态分析和瞬态完全法,编程计算了平台结构在波浪载荷及冰载荷作用下的动力相应,给出了其自振频率和谐响应,绘制了海洋导管架不同部位的变形随载荷参数变化的特性曲线。结果表明,由于海洋导管架所处工作环境特殊,对其进行静动态校核,甚至疲劳分析是非常必要的。
The free vibration and dynamic response of offshore jacket platform subjected to complex loads were carried out using ANSYS software.By dispersing the platform into beam and plate finite elements,the model analysis methods and full transient method are used to carry out the response of the jacket platform,including its natural frequency,harmonic response and dynamic response under wave loads,ice loads,and characteristic curve for different parts of the jacket platform with the variable load parameter were given.The results show that it is necessary to carry out the static and dynamic checking for the offshore jacket platform in special working environment.
The free vibration and dynamic response of offshore jacket platform subjected to complex loads were carried out using ANSYS software.By dispersing the platform into beam and plate finite elements,the model analysis methods and full transient method are used to carry out the response of the jacket platform,including its natural frequency,harmonic response and dynamic response under wave loads,ice loads,and characteristic curve for different parts of the jacket platform with the variable load parameter were given.The results show that it is necessary to carry out the static and dynamic checking for the offshore jacket platform in special working environment.
引文
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[2]张耀光.渤海海洋油气资源开发利用与前景展望[J].海洋开发,2003,6:6-9.
[3]Huang W P,Jiang J T,Yang Y C.Investigation onthe Cause of Excessive Vibration of a Jacket Type Off-shore Platform[C]//The Proceedings of the First Asi-an and Pacieic Coastal Engineering Conference.Dalian:2001:624-629.
[4]Housner G W.Characteristic of Strong Motion Earth-quakes[J].Bull.Seism.Soc.Am.,1947,37(2):17-31.
[5]PENZIEN J,KAUL M K.Response of Offshore Tow-ers to Strong Motion Earthquakes[J].Earthquake En-gineering and Structural Dynamics,1972,12(6):55-68.
[6]Coutinho A L G A,Landau L,Alves J L D.An Im-proved Reduced basis Technique for Dynamic Analysisof Offshore Structures[J].Offshore Engineering,1985,15(4):11-15.
[7]Chang C T,Hinton E,Zienkiewicz.Non-linear Responseof Structure-F1uid-Foundation Systems to EarthquakeExcitation.Chapter 11in Numerical Methods in OffshoreEngineering[M].Wiley:Chiehester,1978.
[8]Yamada Y,Iemura H.Seismic Response of OffshoreStructures in Random Seas[J].EESD,1989,18(3):965-981.
[9]Karadenia H.Spectral Analysis of Offshore Structuresunder Combined Wave And Earthquake Loadings[C]//Proceedings of the Ninth International Offshoreand Polar Engineering Conference.Brest,1999:504-511.
[10]Li Shi-rong,Su Hou-de,Cheng Chang-jun.Free Vi-bration of Functionally Graded Material Beams withSurface-Bonded Piezoelectric Layers in Thermal Envi-ronment[J].Applied Mathematics and Mechanics(English Edition),2009,30(8):1-14.
[11]李世荣,苏厚德.热环境中功能梯度材料EULER梁的自由振动[J].兰州理工大学学报,2008,34(4):12-16.
[12]文晓龙,舒建军,杨作万,等.压力容器底撬计算的一种新方法[J].石油化工设备,2010,39(5):26-29.
[13]吴芳,赵德有.水对船舶与海洋建筑物结构振动影响的研究[J].中国海洋平台,2007,22(3):22-26.
[14]岳前进,杜小振,毕祥军,等.冰与柔性结构作用挤压破坏形成的动荷载[J].工程力学,2004,21(1):202-208.
[15]何晓宇,李宏男.地震与波浪联合作用下海洋平台动力特性分析[J].海洋工程,2007,25(3):34-45.
[16]周亚军.导管架海洋平台结构振动智能主动控制研究[D].大连:大连理工大学,2004.
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