| Offshore structures in ice-covered sea areas are subject to loads due to sea ice movement. Among several types of[*]sea ice、 it is important to estimate ice load imposed by deformed ice such as rubble ice and ridge ice、 since the[*]thickness of deformed ice is much larger than that of the surrounding level ice. Consolidated layer of deformed ice[*]becomes more important part for ice load estimation than sail and keel parts、 due to higher strength、 under especially[*]small deformation rate. Therefore、 creep tests using ice blocks modeled consolidated layer of deformed sea ice were[*]conducted under constant loading in cold room、 and the effects of ice temperature and normal pressure on creep[*]properties were investigated using ice specimen composed of ice blocks. Also、 the applicability of Norton’s (Glen’s)[*]law to secondary creep was investigated. |
