局地海冰数值预测的冰激结构响应计算  

Computation of ice-induced structural vibration based on local sea ice numerical forecast

作　　者：岳前进[1] 季顺迎[1] 于学兵[2] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116024 [2]大连理工大学动力工程系,辽宁大连116024

出　　处：《海洋工程》2003年第2期32-37,共6页The Ocean Engineering

基　　金：国家自然科学基金资助项目(59739170;0206004)

摘　　要：在渤海海冰数值预测的基础上,通过渤海海冰的热力 动力模型,对油气作业区的冰厚、冰速、冰温等海冰参数进行短期数值预测,并以此对海冰的盐度、卤水体积、弯曲强度等海冰物理力学参数进行推算,进而对冰激平台结构响应进行计算分析。以辽东湾JZ20 2油气田的MUQ平台为例,对1999 2000年冬季的冰激结构振动响应进行了预测,其结果与实测情况较为吻合。According to the engineering problem of iceinduced vibration of offshore structures in the winter of Bohai Sea, a computational program system for iceinduced structural vibration analysis was developed on the basis of local sea ice numerical forecast. In the program system, the sea ice thickness, velocity, temperature, and other parameters in the oil/gas exploration area are predicted by using a sea ice thermodynamic and dynamic model. Then the mechanical and physical parameters of ice cover, such as salinity, brine volume and flexural strength are calculated. With the forecasted data above, the iceinduced structural vibration is analyzed through constructing ice dynamic force function. As an example, the iceinduced structural vibration of JZ202MUQ platform in the Liaodong Bay was predicted during the winter of 19992000, and satisfied results were obtained.

关 键 词：海冰 数值预测 海洋结构 冰激结构振动 

分 类 号：P731.15[天文地球—海洋科学]