| 基于海冰物理和力学参数的渤海冰工程分区 |
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| 引用本文： | 李志军,卢鹏.基于海冰物理和力学参数的渤海冰工程分区[J].水科学进展,2004,15(5):598-602. |
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| 作者姓名： | 李志军 卢鹏 |
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| 作者单位： | 大连理工大学海岸和近海工程国家重点实验室, 辽宁, 大连, 116024 |
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| 基金项目： | 国家自然科学基金资助重点项目(40233032，49776278)~~ |
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| 摘 要： | 根据渤海海冰物理和力学参数分布建立渤海海冰工程分区.其特点是将作用到相同直径或宽度的直立结构物上冰的作用力范围相同的区域划分为同一分区内,因此不同重现期设计冰厚度和峰值压缩强度之积作为区划指标.为了获得不同重现期渤海海冰物理和力学性质参数,利用渤海历史资料建立用气温、水温、冰期和冰厚表达非变形平整冰层和冰样温度、盐度、密度的关系,进而获得冰的孔隙率;利用渤海海冰单轴压缩强度同孔隙率的试验关系计算相应峰值压缩强度;然后发展渤海不同重现期平整冰层物理和力学参数的平面分布.在此基础上以新区划指标做不同重现期的海冰工程分区.作为新区划的实例,给出25、50、100年重现期的渤海海冰工程分区.
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| 关 键 词： | 渤海 海冰 物理参数 力学参数 工程分区 |
| 文章编号： | 1001-6791(2004)05-0598-05 |
| 收稿时间： | 2003-06-25 |
| 修稿时间： | 2003年6月25日 |
Ice engineering sub-areas in Bohai from ice physical and mechanical parameters |
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| LI Zhi-jun,LU Peng,Devinder S Sodhi of Technology,Dalian ,China.Ice engineering sub-areas in Bohai from ice physical and mechanical parameters[J].Advances in Water Science,2004,15(5):598-602. |
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| Authors: | LI Zhi-jun LU Peng Devinder S Sodhi of Technology Dalian China |
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| Affiliation: | State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | A new division of ice engineering sub-areas is set up based on the ice physical and mechanical parameters distributions in Bohai. The characteristic of the division shows that the load on the vertical structures with same diameter or width is (equal) in a same division area. Therefore, the new division index becomes the product of a uniform ice sheet design thickness and peak compressive strength at different return periods. To obtain these physical and mechanical parameters, we use history data to set up the expressions of a uniform ice sheet or ice sample temperature, salinity and density with air temperature, water temperature, ice period and ice thickness. Then ice porosity is obtained. Later ice peak compressive strength is calculated by using the experimental relationship of Bohai ice peak compressive strength and porosity. At last, the ice sheet physical and peak compressive strength distributions at different return periods in Bohai are developed from ice sample results. The new ice engineering sub-areas at different return periods are obtained with the help of the new division index. The new ice sub-areas in return periods of 25-, 50- and 100-year are given as samples. |
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| Keywords: | Bohai sea ice physical parameter mechanical parameter engineering division |
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