CAJ | 학술논문

选择合理参数定义损伤变量，对研究静载荷与循环冲击组合下岩石的损伤演化特性具有重要的意义。基于动静组合加载实验装置，对岩石开展静载荷与循环冲击组合加载试验，根据试验结果并依据现有定义静载荷作用下岩石或混凝土损伤变量的方法，从能否表征岩石动态疲劳力学性能的演化规律、第1次冲击造成的损伤以及最终的合理损伤等3个角度，对定义岩石损伤变量的参数进行选择研究。结果表明，残余应变和波阻抗可以定义静载荷与循环冲击组合作用下岩石的损伤变量；与波阻抗相比，残余应变计算损伤变量受主观因素影响较大。
선택합리삼수정의손상변량，대연구정재하여순배충격조합하암석적손상연화특성구유중요적의의。기우동정조합가재실험장치，대암석개전정재하여순배충격조합가재시험，근거시험결과병의거현유정의정재하작용하암석혹혼응토손상변량적방법，종능부표정암석동태피로역학성능적연화규률、제1차충격조성적손상이급최종적합리손상등3개각도，대정의암석손상변량적삼수진행선택연구。결과표명，잔여응변화파조항가이정의정재하여순배충격조합작용하암석적손상변량；여파조항상비，잔여응변계산손상변량수주관인소영향교대。
Selecting a suitable physical and mechanics parameter to define damage variable of rock is of great sig-nificance to describe damage cumulative evolution characteristics of rock subjected to coupled static loadings and cyclic impacts. Based on the test results and definition methods of damage variation of rock or concrete under static loads, the parameters of defining damage variable were selected from whether they can reflect the evolution process of rock dynamic fatigue mechanics characteristics and the damage caused by the first impact and the final reasonable damage. The results show that residual strain and wave impedance may be used to define the damage variable of rock subjected to coupled static-cyclic impact loadings. Compared with wave impedance to define damage variable, it seemed that subjective factors have greater effect on residual strain for defining rock damage variable.