| 锥体结构的冰激振动与冰力函数 |
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| 引用本文： | 岳前进,毕祥军,于晓,时忠民. 锥体结构的冰激振动与冰力函数[J]. 土木工程学报, 2003, 36(2): 16-19 |
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| 作者姓名： | 岳前进 毕祥军 于晓 时忠民 |
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| 作者单位： | 1. 大连理工大学
2. 中海石油研究中心 |
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| 基金项目： | 国家自然科学基金委员会，中海石油总公司联合资助重点项目(597391 79) |
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| 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
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| 关 键 词： | 近海结构 冰激振动 破冰锥体 |
| 文章编号： | 1000-131X(2003)02-0016-04 |
| 修稿时间： | 2001-05-17 |
ICE-INDUCED VIBRATION AND ICE FORCE FUNCTION OF CONICAL STRUCTURE |
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| Yue Qianjin Bi Xiangjun Yu XiaoShi Zhongmin. ICE-INDUCED VIBRATION AND ICE FORCE FUNCTION OF CONICAL STRUCTURE[J]. China Civil Engineering Journal, 2003, 36(2): 16-19 |
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| Authors: | Yue Qianjin Bi Xiangjun Yu XiaoShi Zhongmin |
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| Affiliation: | Yue Qianjin Bi Xiangjun Yu XiaoShi Zhongmin (Dalian University of Technology)(China National Offshore Oil Corporation) |
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| 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 |
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| Keywords: | offshore structure ice induced vibration break?ice cone |
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