CAJ | 학술논문

以国内外代表性滚石冲击力计算方法为基础，针对冲击力的影响因素，设计了一套滚石冲击力测试装置。通过试验设计，选取不同的滚石质量、冲击速度、入射角度、缓冲材料性质及厚度等影响因素，获得冲击力变化规律。结果表明：最大冲击力随滚石重量的减小或冲击速度的降低而逐渐减小，2 cm厚度缓冲层比直接冲击时减小了90%左右，缓冲效果明显。同时最大冲击力随着入射角度的变小而降低，但入射角度越小，冲击力值降低的幅度越小。结合冲击试验结果，通过冲击力计算方法对比分析，建立了可用于各影响因素的最大冲击力计算方法，验算表明误差很小。研究结果可为滚石灾害的防治设计提供参考依据。
이국내외대표성곤석충격력계산방법위기출，침대충격력적영향인소，설계료일투곤석충격력측시장치。통과시험설계，선취불동적곤석질량、충격속도、입사각도、완충재료성질급후도등영향인소，획득충격력변화규률。결과표명：최대충격력수곤석중량적감소혹충격속도적강저이축점감소，2 cm후도완충층비직접충격시감소료90%좌우，완충효과명현。동시최대충격력수착입사각도적변소이강저，단입사각도월소，충격력치강저적폭도월소。결합충격시험결과，통과충격력계산방법대비분석，건립료가용우각영향인소적최대충격력계산방법，험산표명오차흔소。연구결과가위곤석재해적방치설계제공삼고의거。
Based on the domestic and foreign representative calculation methods of rockfall impact force, in view of the factors of impact force, a set of impact force testing equipment is designed. Different rockfall qualities, impact speeds, incident angles, properties and thickness of buffer material as influence factors are selected in experimental design to obtain the change rules of impact force. The results show that the maximum impact force gradually reduces with the decrease of rockfall weight or the lower impact velocity, the force in 2 cm thickness of buffer layer is reduced about 90%than without it;the buffering effect is obvious;and the maximum impact force reduces with the incident angle lowering;but the little decrease amplitude of impact force value as the incident angle become smaller. Combining with impact testing results, a calculation method of maximum impact force associated with each influence factor, is obtained. By checking, it is shown that the error is small, so it can provide certain reference basis for treatment design of rockfall hazards.