循环荷载下岩石材料力学特性研究进展

工程实际中的岩体常常受到地质构造运动、工程施工及次生应力场等循环荷载作用,表现出与单调荷载不同的力学特性.为了更好地研究循环荷载作用下岩石材料的力学特性,对强度特征、变形特征及破坏特征3个方面进行了总结分析,同时对现有研究的局限性提出了几点建议:在更宽频率范围内研究频率对循环力学特性的影响,从而得出更为准确的结论;将现...

Research progress of mechanical properties of rock materials under circulating loading

Rock mass in engineering practice is often subjected to circulating loads such as geological tectonic movement,engineering construction and secondary stress field,which shows different mechanical properties from monotonic loads.In order to study the mechanical properties of rock material under circulating load,the study summarized and analyzed from the 3 aspects of strength characteristics,deformation characteristics and failure characteristics,at the same time put forward some suggestions to the limitations of existing research:to study the effect of frequency on circulating mechanical characteristics in a wider frequency range,thus to reach more accurate conclusion;to study the circulating mechanical properties of rock materials by combining the existing mechanical theories with numerical simulation methods;scanning electron microscopy and in-situ CT scanning were used to conduct in-depth research on the microstructure of rock mechanical properties under circulating loading to explore the instability failure mechanism of rock materials.