| 冰和直立结构相互作用的静冰力可靠性分析 |
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| 引用本文： | 李洪升,郑靖明,岳前进.冰和直立结构相互作用的静冰力可靠性分析[J].海洋学报,2001,23(4):106-112. |
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| 作者姓名： | 李洪升 郑靖明 岳前进 |
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| 作者单位： | 1.大连理工大学工业装备与结构分析国家重点实验室, 辽宁大连116023;大连理工大学工程力学系, 辽宁大连116023 |
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| 基金项目： | 国家自然科学基金重点项目资助项目(59739170). |
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| 摘 要： | 我国渤海每年约有3个月的结冰期,冰与海洋结构的相互作用远较波浪为甚,因此有必要进行冰与海洋结构相互作用的可靠性分析.首先,采用热力学的方法根据每年实测的环境参数对海冰平整冰厚进行数值模拟计算,然后根据计算结果对不同重现期的极值冰厚采用极值统计法给出了极值分布,并与其他文献作比较.其次,以应变速率为海冰强度的主要影响参数,给出了海冰强度的概率分布.最后,以Schwarz公式为静冰力计算公式,结合得到的冰厚和冰强度的概率分布,采用映射变换法进行不同重现期静冰力的可靠度分析计算,并用蒙特卡罗重点抽样法进行模拟.
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| 关 键 词： | 海冰参数 静冰力 重现期 可靠度 |
| 文章编号： | 0253-4193(2001)04-0106-07 |
| 收稿时间： | 2000/6/19 0:00:00 |
| 修稿时间： | 2000年6月19日 |
Reliability analysis of static ice force on the action between ice and structure |
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| LI Hong-sheng,ZHENG Jing-ming and YUE Qian-jin.Reliability analysis of static ice force on the action between ice and structure[J].Acta Oceanologica Sinica (in Chinese),2001,23(4):106-112. |
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| Authors: | LI Hong-sheng ZHENG Jing-ming and YUE Qian-jin |
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| Institution: | 1.State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Technology, DaLian 116023, China;Department of Engineering Mechanics, Dalian Vniversity Technology, Dalian 116023, China2.Department of Engineering Mechanics, Dalian Vniversity Technology, Dalian 116023, China |
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| Abstract: | There are almost three months of ice period in the Bohai Sea, and the ice force is more powerful than the force of wave on the structure in winter. So, it is necessary to analysing the reliability of static ice force on the process action between ice and structure. First, a numerical simulation of the sea ice thickness on the lines of environment parameters is made based on practical measurements every year, and is compared to other literature. Second, the statistic distribution of sea ice strength is given, taking the strain velocity as main effect during of numeration. Finaly, the reliability of static ice force for different reccurrence periods is calculated by taking Schwarz formula as formula of calculating static ice force and results are simulated by Monte Carlo important sampling method. |
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| Keywords: | sea ice factor static ice force reccurrence period reliability |
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