摘要
为了保证自升式平台冬季在冰区海域安全作业,应对桩腿结构在动冰载作用下的强度进行评估。应用ANSYS软件建立自升式平台和冰相互作用的仿真计算模型,实现了自升式平台结构的冰激瞬态动力分析,提出冰激动载荷下平台桩腿的静强度和疲劳强度校核的计算流程。对渤海某自升式钻井平台桩腿进行了强度校核,计算出不同海冰参数下平台桩腿的冰激疲劳损伤。计算结果表明,该平台的桩腿在冰激动载荷下的强度满足安全要求,冬季继续在冰区海域进行钻井作业是可行的。
The digital model for interactive action between ice and jack-up platform was established using ANSYS sottware, and the dynamic analysis of jack-up platform was performed. A calculation process for the ultimate and fatigue strength assessment on jack- up under ice-induces dynamic loads was presented. The strength of legs of a jack-up drilling platform serviced in Bohai Sea is evaluated and the ice-induced fatigue damage of the platform leg under different ice parameter was determined. The calculation results show that the jack-up platform under dynamic ice loads is in safe condition and can perform drilling operation in winter ice zone.
出处
《石油大学学报（自然科学版）》
EI
CSCD
北大核心
2005年第5期76-79,83,共5页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
国家重点装备科技项目攻关计划(97-317-02-01)
关键词
自升式平台
冰载荷
动态分析
冰激疲劳
有限元
安全评估
jack-up platform
ice load
dynamic analysis
ice-induced fatigue
finite element
safety assessment
