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直立柔性窄结构上的海冰挤压同时破坏

DOI: 10.3969/j.issn.1006-7043.201311028

Keywords: 挤压同时破坏, 全接触, 窄结构, 柔性结构, 挤压冰力

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Abstract:

针对寒区结冰水域直立结构上的挤压冰力问题,利用渤海原型测量数据,证明了当直立结构上发生海冰挤压同时破坏时,基于挤压非同时破坏理论的"低值冰力"不再适用。基于对渤海原型测量数据的分析,并结合海冰的韧脆转变行为特性,讨论了直立结构上海冰挤压同时破坏的易发性,指出冰板与结构的全接触是海冰挤压同时破坏发生的关键条件,这种全接触要求可导致韧性或韧脆转变破坏的低冰速和不易导致破碎冰堆积和残留的柔性窄结构,即低冰速下的直立柔性窄结构极易发生海冰挤压同时破坏。

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