| 摘要: |
| 海冰的压缩强度是海冰最主要的力学特性．针对辽河口附近海域海冰的压缩强度指标，2014 ～2015年冬季于辽河口附近采样并进行室内测试．内容包括单轴压缩强度实验、侧限压缩强度实验、变尺寸压缩强度测试．实验表明辽河口海冰压缩强度受应变速率、卤水体积影响显著．侧限压缩实验要比单轴压缩实验所得结果略大．不同高宽比的试样在相同应变速率的前提下压缩强度变化不明显，尺寸影响不显著． |
| 关键词: 海洋工程 海冰 压缩强度 侧限压缩 尺寸效应 辽河口 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（51309046）；国家海洋公益行业专项资助项目（201505019）；中国电力建设集团有限公司科技专项资助项目（SD201311）；大连理工大学基本科研业务费专项资助项目［DUT15RC(3)047］ |
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| Characteristics of sea ice compressive strength in Liaohe Estuary |
| YU Zhemin,ZHANG Dayong,WANG Guojun,YUE Qianjin,LUO Chengxi,YU Baochu |
| (College of Ocean and Civil Engineering. Dalian Ocean University. Dalian 116023 , China;School of Ocean Science & Technology, Dalian University of Technology, Panjin 116023, China;Central Southern Geotechnical Design Institute Co. ,Ltd. Changsha 410014, China) |
| Abstract: |
| The compressive strength is one of important mechanical characteristics of sea ice. The compnessive
strength of sea ice is sampled and tested during the winter of 2014~2015 in Liaohe Estuary. The experiments conclude uniaxial compressive strength test, confined comfressive strength test and uniaxial compressive strength test
on the ice specimens from different dimensions. The experiment shows that the strength of sea ice is significantly affected by strain rate and brine volume. The confined compressive strength of ice is slightly larger than that of the u
niaxial compressive strength. Under the same strain rate, the compressive strength of the sample is not different ob
viously and the size effect of the specimen is not important. |
| Key words: marine engineering sea ice compression strength confined compression size effect Liaohe River
Estuary |
