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海冰在波浪冲击作用下可能会发生断裂,通过数值模拟定量地描述波浪引起的海冰断裂对海工结构的运行安全以及分析海冰断裂处海水与大气之间的热交换有重要作用。该文利用建立的三维数值波浪水池,将海冰视为刚性平板,结合渤海冬季海冰、波浪的相关参数,研究海冰受波浪冲击的垂向冲击力、水平冲击力、弯矩和最大弯曲正应力随波高、冰长及冰厚的变化规律;并结合渤海海冰的弯曲强度,推断海冰发生断裂的极限参数,结果表明:在渤海海域某些特定条件下,海冰断裂极限波高、冰长和最小冰厚分别为0.504 m、4.273 m和0.098 m。
The sea ice can break under the impact of waves. It is important to quantitatively describe the sea ice breakage caused by waves through the numerical simulation of the safety of marine structures and the analysis of the heat exchange between the seawater and the atmosphere at the sea ice breakup. In this paper, the established three-dimensional numerical wave pool, the sea ice as a rigid plate, combined with the winter Bohai Sea ice, the wave of the relevant parameters of sea ice by wave impact vertical impact, horizontal impact, bending moment and maximum bending The results show that under some special conditions in the Bohai Sea, the limit of the sea ice fracture is high, and the maximum of the sea ice is higher than that of the sea ice. Ice length and minimum ice thickness are 0.504 m, 4.273 m and 0.098 m, respectively.