【摘要】 基于现场原型结构测量 ,研究了冰与锥体结构相互作用的动冰力与冰激锥体结构振动 ,建立了确定性冰力函数。实测发现 ,冰与锥体结构作用时以弯曲破坏为主 ,冰的破碎长度与冰厚成正比 ,冰的破碎频率随冰速增加 ,并有可能达到结构的固有频率。通过分析冰的破坏过程与冰压力盒测量的冰力时程 ,建立了三参数的冰力函数 ,并讨论了各参数的影响因素更多还原

【Abstract】 A deterministic ice force function of the conical structure is proposed in the paper It is based on the full?scale tests conducted on offshore jacket platforms in northern China The study shows that the ice force on the conical structure mainly fails in bending with definite breaking length The length is proportioned to the ice thickness For a slender structure with break?ice cone,the period of ice force near or even equal to the natural period of the structure The three parameters of the ice force are determined by the ice failure process and the measured data更多还原