Author(s): Yuko Matsuo; Yoshikatsu Yasunaga; Shinji Kioka; Hiroshi Saeki; Akira Nagano
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Keywords: No Keywords
Abstract: In cold region, given that first-year ice ridges often govern the design load for offshore structure, it is important to obtain knowledge about ice ridges, especially the consolidated parts, in designing offshore structures. In this study, we performed a preliminary series of tests (uniaxial compression tests) in the laboratory on model ice (refrozen rubble) to investigate the strength and physical properties of the consolidated parts. In order to construct the consolidated parts of ice ridge model, cubical ice blocks of size were randomly arranged in the ice tank filed with saline water that had greater salinity than that of the ice blocks. After they were refrozen, we collected core sample from ice ridge model by cylindrical drills with various diameters. And we performed the uniaxial compressive test with various combinations of core diameters and representative length of ice block. In addition, we performed test by changing the strain rate and room temperature, when d=100 mm, a=42.5 mm.
Year: 2002