The offshore oil and gas production in Bohai sea is subject to the influences of ice in winter. The disasters caused by sea ice in Bohai sea were briefly reviewed. The features of Bohai sea and the ice conditions were studied. In the analysis of sea ice on marine structures based on their harmful effects, and with the help of ANSYS infinite element analysis software, the anti — ice performance of vertical structures and conical structures was compared and analyzed. The results show that the horizontal force can be reduced effectively by conical structures. The characteristics and performance of jacket platform and artificial island have been discussed. The design and promotion of anti—ice structure should be combined with environmental parameters, and the warning mechanism and emergency plan should also be established based on historical and investigation data.%在渤海海域,海冰可能会对滩海油气田冬季生产造成影响.简述了渤海海域的特点、海冰冰情及海冰灾害.在分析海冰对海工结构的危害作用的基础上,借助于ANSYS有限元分析软件对直桩及锥体结构的抗冰性能进行了比较分析,椎体结构能抵抗水平冰力.探讨了导管架平台及人工岛两类抗冰结构的特点和性能,指出应结合近海工程环境参数设计和推广有效的抗冰结构,并根据历史及调查资料建立完善的预警机制及应急预案.
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