CAJ | 학술논문

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。
침대빙적단축압축강도행위동가재방향、가재위이속도화시양상대척촌유관，재-10C°빙양온도조건하，대불동척촌적5충시양、평행빙면화수직빙면적2충가재방향화위이속도재0.0072~387mm/min범위내，진행료25충조합적385차단축압축강도시험，획득375개시양적유효시험수거。결과발현，매조시양수가재위이속도적증가，기빙양적겁한파배응력（강도）야증가，체도일정치후，수가재위이속도적증가이감소；대응적빙양파배형식야유인성전절파렬과도도취성파쇄；수직빙면방향주상정체적빙양강도약시평행빙면방향가재강도적1.87~2.40배，표현출각향이성；시양상대척촌소시기강도상대교대。
Considering the ice uniaxial compressive behaviors with loading directions, loading displacement speeds and specimen sizes, 385 tests in 25 groups were conducted with five different specimen sizes, two different loading directions parallel or perpendicular to the original ice surface, and the loading displace-ment speeds ranging between 0.0072~387 mm/min under the ice specimen temperature of -10°C. A total of 375 tests were successful in the 385 specimen tests. The experimental results show that (a) the ice ulti-mate stress (strength) increases firstly, reaches a top value, and then decreases with the loading displace-ment speed increasing;(b) the corresponding ice specimen failure modes change from ductile break to brit-tle break with the strain rate increasing;(c) the peak strength perpendicular to ice surface is 1.87~2.40 times of the strength parallel to ice surface in the columnar crystal ice,which it is a typical anisotropy ma-terial characteristics;and (d) the peak strength is higher in the cases of relative smaller specimens.