导管架平台冰振特征分析及冰振风险应对措施
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摘要
冰激振动是威胁海冰区海洋石油导管架平台结构安全的主要因素。为分析导管架平台冰振特征,采用ABAQUS有限元软件对C平台的动力响应进行数值模拟,得到平台的振动模态等参数。结合监测及仿真数据对比分析表明:平台结构基频与平台所处区域冰力频率相近,会产生明显的共振现象。针对导管架平台冰振特征分析结果,提出了包括预警、监测、结构改造及配置冲冰装置等几种应对措施,现场应用显示抗冰效果明显,对冰区导管架平台冰期风险管理有一定指导意义。
Ice-induced vibration is the main factor threatening the structural safety of offshore oil jacket platforms in sea ice area. In order to analyze the ice-induced vibration characteristics of jacket platforms, the finite element software ABAQUS was used to simulate the dynamic response of Platform C; and the vibration modal parameters of the platform were obtained. According to the comparative analysis of the monitoring data and the simulation data, the fundamental frequency of the platform structure is close to the ice force frequency in the region where the platform is located, which will generate obvious resonance phenomenon. According to the analysis results of ice-induced vibration characteristics of the jacket platform, several countermeasures, including early warning, monitoring,structural transformation and device for flushing ice, were put forward. The field application shows that the anti-ice effect is obvious,which is of certain guiding significance for ice risk management of the jacket platform in ice area.
Ice-induced vibration is the main factor threatening the structural safety of offshore oil jacket platforms in sea ice area. In order to analyze the ice-induced vibration characteristics of jacket platforms, the finite element software ABAQUS was used to simulate the dynamic response of Platform C; and the vibration modal parameters of the platform were obtained. According to the comparative analysis of the monitoring data and the simulation data, the fundamental frequency of the platform structure is close to the ice force frequency in the region where the platform is located, which will generate obvious resonance phenomenon. According to the analysis results of ice-induced vibration characteristics of the jacket platform, several countermeasures, including early warning, monitoring,structural transformation and device for flushing ice, were put forward. The field application shows that the anti-ice effect is obvious,which is of certain guiding significance for ice risk management of the jacket platform in ice area.
引文
[1]金书成,杨炎华.冰荷载对导管架海洋平台的作用研究[J].中国海洋平台,2010,25(5):15-19.
[2]赵海培.导管架海洋平台与海冰相互作用及结构优化分析[D].青岛:中国石油大学(华东),2015.
[3]孟祥鼎.冰激振动下海洋平台动力响应与安全性分析[D].兰州:兰州理工大学,2017.
[4]王译鹤,岳前进,毕祥军.基于原型测量的渤海导管架平台抗冰保障系统[J].哈尔滨工程大学学报,2015,36(6):831-835,846.
[5]王荣祥.冰区在役导管架平台的冰振疲劳研究[D].大连:大连理工大学,2008.
[6]史庆增,苏彪,刘波.海冰对海上油气工程的破坏及减灾措施[J].石油工程建设,2005,3(4):19-23.
[7]张继刚,孙海超,刘菲菲.新型海洋平台三种抗振措施性能对比分析[J].防灾减灾工程学报,2017,37(5):802-807.
[8]张士超.海洋石油平台吊艇架结构安全评估[J].中国安全生产科学技术,2018,14(8):101-105.
[9]王胜永,岳前进,毕祥军,等.渤海海洋平台不规则椎体抗冰振性能[J].科学技术与工程,2017,17(32):6-10.
[2]赵海培.导管架海洋平台与海冰相互作用及结构优化分析[D].青岛:中国石油大学(华东),2015.
[3]孟祥鼎.冰激振动下海洋平台动力响应与安全性分析[D].兰州:兰州理工大学,2017.
[4]王译鹤,岳前进,毕祥军.基于原型测量的渤海导管架平台抗冰保障系统[J].哈尔滨工程大学学报,2015,36(6):831-835,846.
[5]王荣祥.冰区在役导管架平台的冰振疲劳研究[D].大连:大连理工大学,2008.
[6]史庆增,苏彪,刘波.海冰对海上油气工程的破坏及减灾措施[J].石油工程建设,2005,3(4):19-23.
[7]张继刚,孙海超,刘菲菲.新型海洋平台三种抗振措施性能对比分析[J].防灾减灾工程学报,2017,37(5):802-807.
[8]张士超.海洋石油平台吊艇架结构安全评估[J].中国安全生产科学技术,2018,14(8):101-105.
[9]王胜永,岳前进,毕祥军,等.渤海海洋平台不规则椎体抗冰振性能[J].科学技术与工程,2017,17(32):6-10.