Abstract
For the abnormal ice condition in 2009–2010 winter, sea ice samples were collected in a tide ditch outside a port in the east coast of Liaodong Bay, and ice specimens were prepared. Experimental study was carried out with a temperature-control precision of 0.1°C, and 117 columnar-grained ice specimens were loaded along the direction parallel to ice surface under different test temperatures (−4, −7, −10, −13, −16°C) and strain rates ranging from 10−6 to 10−2 s−1 within which the ductile region, ductile-brittle transition and brittle region are contained. The uniaxial compressive strengths, density and salinity of the ice specimens were measured. The results support the curved-surface relationship between the uniaxial compressive strength and porosity within a wide range of strain rate. The curved-surface relationship gives a quantitative description about the variations of the mechanical behavior transition point with ice porosity, and supplies a uniform mathematical representation of uniaxial compressive strength under different failure modes. Besides, it is deduced that abnormal ice condition in 2009–2010 winter will not result in a change of the uniaxial compressive strength of sea ice in Bohai Sea.
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Li, Z., Zhang, L., Lu, P. et al. Experimental study on the effect of porosity on the uniaxial compressive strength of sea ice in Bohai Sea. Sci. China Technol. Sci. 54, 2429–2436 (2011). https://doi.org/10.1007/s11431-011-4482-1
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DOI: https://doi.org/10.1007/s11431-011-4482-1