首页 | 官方网站   微博 | 高级检索  
     

北极夏季海冰单轴抗压强度研究
引用本文:韩红卫,李志军,黄文峰,卢鹏,雷瑞波.北极夏季海冰单轴抗压强度研究[J].海洋学报(英文版),2015,34(1):129-136.
作者姓名:韩红卫  李志军  黄文峰  卢鹏  雷瑞波
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,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,长安大学 环境科学与工程学院, 陕西 西安 710054,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,中国极地研究中心, 上海 200136
基金项目:The National Natural Science Foundation of China under contract No. 41376186; the Public Science and Technology Research Funds Projects of Ocean, State Oceanic Administration of China under contract No. 201205007; the High Technology of Ship Research Project of the Ministry of Industry and Information Technology of China under contract No. 2013417-01; the International Science and Technology Cooperation Program of China under contract No. 2011dFA22260; the International Science and Technology Cooperation Program of the Chinese Arctic and Antarctic Administration, State Oceanic Administration of China under contract No. IC201209.
摘    要:The results on the uniaxial compressive strength of Arctic summer sea ice are presented based on the samples collected during the fifth Chinese National Arctic Research Expedition in 2012(CHINARE-2012). Experimental studies were carried out at different testing temperatures(-3,-6 and-9°C), and vertical samples were loaded at stress rates ranging from 0.001 to 1 MPa/s. The temperature, density, and salinity of the ice were measured to calculate the total porosity of the ice. In order to study the effects of the total porosity and the density on the uniaxial compressive strength, the measured strengths for a narrow range of stress rates from 0.01 to 0.03 MPa/s were analyzed. The results show that the uniaxial compressive strength decreases linearly with increasing total porosity, and when the density was lower than 0.86 g/cm3, the uniaxial compressive strength increases in a power-law manner with density. The uniaxial compressive behavior of the Arctic summer sea ice is sensitive to the loading rate, and the peak uniaxial compressive strength is reached in the brittle-ductile transition range. The dependence of the strength on the temperature shows that the calculated average strength in the brittle-ductile transition range, which was considered as the peak uniaxial compressive strength, increases steadily in the temperature range from-3 to-9°C.

关 键 词:Arctic  sea  ice  compressive  strength  porosity  density  temperature
收稿时间:4/1/2014 12:00:00 AM
修稿时间:2014/8/29 0:00:00

The uniaxial compressive strength of the Arctic summer sea ice
HAN Hongwei,LI Zhijun,HUANG Wenfeng,LU Peng and LEI Ruibo.The uniaxial compressive strength of the Arctic summer sea ice[J].Acta Oceanologica Sinica,2015,34(1):129-136.
Authors:HAN Hongwei  LI Zhijun  HUANG Wenfeng  LU Peng and LEI Ruibo
Affiliation:1.State Key Laboratory of Coastal and Offshore Engineering, dalian University of Technology, dalian 116024, China2.School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China3.Polar Research Institute of China, State Oceanic Administration, Shanghai 200136, China
Abstract:The results on the uniaxial compressive strength of Arctic summer sea ice are presented based on the samples collected during the fifth Chinese National Arctic Research Expedition in 2012 (CHINARE-2012). Experimental studies were carried out at different testing temperatures (-3, -6 and -9℃), and vertical samples were loaded at stress rates ranging from 0.001 to 1 MPa/s. The temperature, density, and salinity of the ice were measured to calculate the total porosity of the ice. In order to study the effects of the total porosity and the density on the uniaxial compressive strength, the measured strengths for a narrow range of stress rates from 0.01 to 0.03 MPa/s were analyzed. The results show that the uniaxial compressive strength decreases linearly with increasing total porosity, and when the density was lower than 0.86 g/cm3, the uniaxial compressive strength increases in a power-law manner with density. The uniaxial compressive behavior of the Arctic summer sea ice is sensitive to the loading rate, and the peak uniaxial compressive strength is reached in the brittle-ductile transition range. The dependence of the strength on the temperature shows that the calculated average strength in the brittle-ductile transition range, which was considered as the peak uniaxial compressive strength, increases steadily in the temperature range from -3 to -9℃.
Keywords:Arctic sea ice  compressive strength  porosity  density  temperature
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《海洋学报(英文版)》浏览原始摘要信息
点击此处可从《海洋学报(英文版)》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号