第19卷第7期 2015年7月
文章编号：10077294(2015)07-085009
船舶力学
Journal of Ship Mechanics
自升式钻并平台的抗冰性能评价
Vol.19 No.7 Jul.2015
张大勇1，岳前进1,2，刘笛3，许宁4，王冬庆3，王胜勇2
辽宁大连116023；3.大连海洋大学航海与船舶工程学院，辽宁大连116024；4.国家海洋环境监测中心，辽宁大连116024)
摘要：自升式钻井平台属于典型的柔性结构。由于冰与柔性抗冰结构相互作用的复杂性,长期以来尚未形成基于动冰力响应分析的结构设计。结构抗冰设计中大都是从极端荷载出发,只考虑最大静冰力或最大倾覆力矩是否能推倒平台。基于对渤海辽东湾柔性抗冰平台的多年监测，发现强烈的冰激振动引起平台管节点疲劳失效、上部设施的非正常运行、作业人员不舒适等间题的风险性要远大于极端静冰荷载下结构的整体安全间题。文中基于多年现场冰与结构作用观测及冰荷载的研究成果，提出了柔性抗冰结构设计中应考虑的主要失效模式及评价方法。最后，以渤海某典型自升式钻井平台为例，对其抗冰性能进行评价。该文的研究可为寒区自升式平台的抗冰概念设计提供合理依据，
关键词：自升式平台；冰激振动；抗冰性能；评价
中图分类号：U674.38+1
文献标识码：A
doi: 10.3969/j.issn.10077294.2015.07.011
Structuralice-resistantperformanceevaluation
ofjack-updrillingplatforms
ZHANG Da-yong', YUE Qian-jin L2, LIU Di, XU Ning', WANG Dong-qing', WANG Sheng-yong(1. School of Ocean Science & Technology, Dalian University of Technology, Panjin 124221, China; 2. State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Tech., Dalian 116023, China; 3. College of Maritime and Shipping Engineering, Dalian Ocean University, Dalian 116024, China; 4. State Center of Ocean Environment Monitoring China, Dalian 116023, China)
Abstract: The jackup drilling platforms belong to the typical flexible structures. As the complexity of the interactions between the ice and structures, the design code of the flexible iceresistant structures is not based on the dynamic response analysis. Current design codes for iceresist offshore structures mainly deal with the extreme force, not the dynamic ice loads. Based on the field monitoring data of iceresist platforms in Bohai Liaodong Gulf, the significant iceinduced vibration not only causes significant cyclical stress of tube node but also great acceleration response, which can endanger the pipeline systems on the platform and discomfort the crew members. The risks induced by ice vibrations are more serious than the extreme static ice load. In this paper, based on the field monitoring and ice loads research, the main failure modes and evaluation methods for the flexible iceresistant structure design are provided. Finally, the iceresis-tant performance is analyzed by taking a jackup platform in Bohai Sea as an example. This study provides
收稿日期：2015-01-11
基金项目：国家自然科学基金项目（51309046），辽宁省科技厅科学技术项目（L2011124）作者简介：张大勇（1978-），男，副教授，E-mail：zhangdayong_2001@163.com；
岳前进(1958-），男，教投，博士生导师