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针对冰的单轴压缩强度行为同加载方向、加载位移速度和试样相对尺寸有关,在-10C°冰样温度条件下,对不同尺寸的5种试样、平行冰面和垂直冰面的2种加载方向和位移速度在0.0072~387mm/min范围内,进行了25种组合的385次单轴压缩强度试验,获得375个试样的有效试验数据。结果发现,每组试样随加载位移速度的增加,其冰样的极限破坏应力(强度)也增加,达到一定值后,随加载位移速度的增加而减小;对应的冰样破坏形式也由韧性剪切破裂过渡到脆性破碎;垂直冰面方向柱状晶体的冰样强度约是平行冰面方向加载强度的1.87~2.40倍,表现出各向异性;试样相对尺寸小时其强度相对较大。
The uniaxial compressive strength behavior of ice is related to the loading direction, the loading displacement speed and the relative size of the sample. Under the conditions of -10C ° ice temperature, five samples of different sizes, parallel ice and vertical ice 2 385 uniaxial compressive strength tests of 25 combinations were carried out in the loading direction and displacement speed in the range of 0.0072 ~ 387mm / min, and the effective test data of 375 samples were obtained. The results show that the ultimate stress (intensity) of the ice sample increases with the increase of the loading displacement velocity. After reaching a certain value, the specimen decreases with the increase of the loading displacement velocity. The damage form of the corresponding ice sample also changes from The transition from ductile shearing to brittle fracture; the ice-like strength of columnar crystal in the direction of vertical ice is about 1.87-2.40 times of that in parallel ice direction, showing anisotropy;