摘要
给出了渤海随机海浪及随机海冰载荷作用于平台构件上的随机疲劳应力幅的计算方法,分析了一年中平台构件的累积疲劳损伤,提出了考虑累积疲劳损伤的模糊性之后修正的Miner法则.据此,给出了安全疲劳寿命的估算方法.
The calculation method of random fatigue stress on structure members of an offshore platform due to random sea wave load and random sea ice load in Bohai Sea is given. The cumulative fatigue damage of structure members of an offshore platform is analyzed for one year. A correction to the Miner principle is provided, considering the fuzziness of the cumulative fatigue damage, based upon which a method for estimation of safety fatigue life is given.
出处
《冰川冻土》
CSCD
北大核心
2003年第S2期317-321,共5页
Journal of Glaciology and Geocryology
基金
中国海洋石油总公司科研项目"渤海海上固定平台低温疲劳强度研究"(9052)资助
关键词
渤海海冰
作用
采油平台
模糊
疲劳寿命
估算
Bohai Sea
sea ice
action
production platform
fuzzy
fatigue
life
estimation
