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为研究影响海冰单轴压缩强度的因素,在渤海辽河口附近海域采集冰坯,加工成方柱状冰样.在试验温度分别为-3℃,-5℃,-7℃,-10℃和-15℃下,对225个冰样沿平行和垂直自然冰表面方向进行加载.研究试样温度,加载方向,应变速率和孔隙率对海冰单轴压缩强度的影响.试验结果表明:海冰单轴强度随试样温度的降低而增加;垂直方向冰样的峰值强度高于水平方向,海冰表现为各向异性.利用试验结果建立了韧性区内海冰单轴压缩强度与应变速率和孔隙率的统计关系.
In order to study the factors that affect the uniaxial compressive strength of sea ice, ice billets were collected in the sea near the Liaohe Estuary in Bohai Sea and processed into a square column ice-like specimen.The test temperatures were -3 ℃, -5 ℃, -7 ℃, -10 ℃ and 225 ice samples were loaded along parallel and perpendicular natural ice surfaces at -15 ° C. The effects of sample temperature, loading direction, strain rate and porosity on the uniaxial compressive strength of sea ice were studied.The experimental results show that sea ice The uniaxial strength increases with the decrease of the sample temperature, the peak intensity of the ice in the vertical direction is higher than that in the horizontal direction, and the sea ice behaves anisotropy.The uniaxial compressive strength, strain rate and pore space Rate of statistical relationship.