断续节理岩体动态疲劳损伤研究  

Dynamic fatigue damage of intermittence jointed rock masses

作　　者：邵鹏[1] 张勇[1] 贺永年[1] 段晨辉[1] 

机构地区：[1]中国矿业大学建筑工程学院,江苏徐州221008

出　　处：《岩土工程学报》2005年第7期824-827,共4页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金资助项目(50490273)

摘　　要：分析了断续节理岩体动态疲劳损伤的复杂性,阐明了疲劳损伤研究的近似处理方法。基于剩余应变强度理论和线性退化准则讨论了断续节理岩体动态疲劳损伤累积过程。研究了岩体破裂概率与疲劳损伤的等效性,建立了疲劳损伤变量与分形维数间的定量关系。最后通过动态疲劳实验验证了结论的正确性。Complexity of fatigue damage process of intermittence jointed rock masses subjected to dynamic loading was analyzed, and an approximate evaluation method was set forth. The process of dynamic fatigue damage accumulation was discussed based on residual strain intensity theory and linear degradation criterion. The equivalence between rupture probability and fatigue damage variable was studied using statistical method and the quantitative relation between fatigue damage variable and fractal dimension was established. Correctness of the conclusion was validated through dynamic fatigue experiments.

关 键 词：断续节理岩体 动态疲劳损伤 破裂概率 分形维数 

分 类 号：TD231.6[矿业工程—矿井建设]