渤海海冰工程设计参数分布  

DISTRIBUTION OF ICE ENGINEERING DESIGN CRITERIA OF BOHAI

作　　者：李志军[1] Devinder S Sodhi 卢鹏[1] 

机构地区：[1]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

出　　处：《工程力学》2006年第6期167-172,共6页Engineering Mechanics

基　　金：国家自然科学基金项目(49776278);国家自然科学基金重点项目(40233032)

摘　　要：利用渤海历史资料建立由气温、水温、冰期和冰厚表达平整冰层温度、盐度、密度的垂直剖面,进而获得冰的孔隙率垂直剖面。在此基础上通过渤海冰力学参数同孔隙率的试验关系计算出相应冰层峰值压缩强度、峰值弯曲强度、峰值剪切强度和弹性模量。将渤海历史资料归纳的冬季气温分布、水温分布和不同重现期冰厚度分布资料放入渤海1/6经度和1/6纬度的网格内,从而获得渤海不同重现期平整冰层的物理和力学参数分布。作为实例,给出渤海25、50、100年重现期的平整冰层设计厚度分布、压缩强度分布、弯曲强度分布、剪切强度分布和弹性模量分布。The expressions for vertical profiles of ice sheet temperature, salinity and density using historical air temperature, water temperature, ice period and ice thickness of Bohal are set up. The vertical profile of ice porosity is also obtained. The compressive strength, flexural strength, shear strength and elastic modulus of the ice sheet are calculated using the experimental relationships of Bohai ice mechanical parameters and porosity. The air and water temperature distributions of January in Bohai from historical statistic data as well as the design ice thickness of different ice periods are organized using a mesh of 1/6 latitude x 1/6 longitude in Bohai. The ice-sheet physical and mechanical parameter distributions of different ice periods in Bohai are thus obtained. As samples, the distributions of ice sheet design thickness, compressive strength, flexural strength, shear strength and elastic modulus for ice periods of 25, 50 and 100 years are presented.

关 键 词：海冰 重现期 设计参数 厚度 孔隙率 力学参数 

分 类 号：P731.15[天文地球—海洋科学] O324[理学—一般力学与力学基础]