| 冰激动载荷下自升式平台桩腿结构的安全评估 |
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| 引用本文： | 张剑波,刘健. 冰激动载荷下自升式平台桩腿结构的安全评估[J]. 中国石油大学学报(自然科学版), 2005, 29(5) |
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| 作者姓名： | 张剑波 刘健 |
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| 作者单位： | 1. 上海交通大学 船舶海洋与建筑工程学院,上海,200030
2. 中国石油大学 机电工程学院,山东,东营,257061 |
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| 基金项目： | 国家重点装备科技项目攻关计划(97-317-02-01) |
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| 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。
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| 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 |
Safety assessment on leg of jack-up platforms under ice-induced dynamic loads |
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| ZHANG Jian-bo,LIU Jian. Safety assessment on leg of jack-up platforms under ice-induced dynamic loads[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 2005, 29(5) |
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| Authors: | ZHANG Jian-bo LIU Jian |
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| Affiliation: | ZHANG Jian-bo~1,LIU Jian~2 |
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| Abstract: | The digital model for interactive action between ice and jack-up platform was established using ANSYS software,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. |
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| Keywords: | jack-up platform ice load dynamic analysis ice-induced fatigue finite element safety assessment |
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