尺寸效应对海冰压缩强度的影响  

Effect of size effect on the compressive strength of sea ice

作　　者：资林钦 王国军 王帅飞 李书兴 张大勇 岳前进 ZI Linqin, WANG Guojun, WANG Shuaifei, LI Shuxing, ZHANG Dayong, YUE Qianjin(School of Ocean Science and Technology , Dalian University of Technology , Panjin 124221, Chin)

机构地区：[1]大连理工大学海洋科学与技术学院,辽宁盘锦124221

出　　处：《水利科学与寒区工程》2018年第3期18-24,共7页Hydro Science And Cold Zone Engineering

基　　金：国家自然科学基金项目(51679033);国家重点研发计划(2017YFF0210700;2016YFC0303402);国家海洋公益项目(201505019)

摘　　要：海冰压缩强度是海冰的主要力学特性,为了研究海冰压缩强度实验中试件尺寸对压缩强度的影响,本文于冬季在黄海庄河附近海域采冰样,在低温实验室内控制低温实验环境条件,保持试件高宽比恒定以及保持高度恒定的两种变量条件下,沿垂直冰面和平行冰面两个方向对海冰单轴压缩强度进行了试验研究。采用Weibull-Бопотин理论对试验结果进行统计分析,探讨了尺寸效应对冰试件压缩强度的影响。试验和理论计算结果表明:在相同高宽比及相同高度时,均存在试件压缩强度随体积增大而减小的现象,其中垂直加载条件下,试件的尺寸效应表现为更显著的线性关系,水平加载条件下尺寸效应不明显。The compressive strength of sea ice is the main mechanical property of sea ice.In order to study the effect of specimen size on compressive strength in the experiment of sea ice compression strength,in this paper,the sea ice samples were collected from the Huanghai Sea in the vicinity of Zhuanghe.The uniaxial compressive strength of sea ice was experimentally studied in two directions along the vertical and parallel ice surfaces under the condition of controlling the environmental conditions in low-temperature laboratory,keeping the height-width ratio of specimens constant and maintaining a high degree of constant.The experimental results are statistically analyzed by Weibull-бопотин theory.And the influence of size effect on the compressive strength of ice specimen is discussed.The experimental and theoretical results show that the compressive strength of the specimen decreases with the increase of volume,while the linear relationship of the size effect of the specimen is more significant in vertical loading,and the size effect is not obvious under the condition of horizontal loading.

关 键 词：黄海 海冰 尺寸效应 低温实验 压缩强度 

分 类 号：P731.15[天文地球—海洋科学] P75