In terms of strength properties,breaking length,bursting index and tearing index increased respectively by 7.64%,9.96% and 10.71%.

在强度性能方面,裂断长、耐破指数和撕裂指数分别提高7.64%、9.96%和10.71%。

According to the failure mechanism of ice sheet, the point of maximal tensile stress is the breaking point, a numerical prediction of breaking length is examined. the predicted values have a good agreement with the measured values.

把冰排简化为三维弹性板,作用不同宽厚比的荷载,通过计算冰排的应力沿板长分布,按照普遍认可两种破坏模式在破坏点的应力特点,推断出破坏模式,从而得出荷载宽厚比和破坏模式的关系。 根据冰排的拉应力破坏机理,最大拉应力点就是断裂点,数值分析冰排应力,预测破碎长度,与现场观测结果进行比较,预测值与观测值相符。