期刊论文

Fracture experiments and numerical simulation of cracked body in rock-like materials affected by loading rate

Pu, C.

中文

岩石力学与工程学报

1000-6915

2018

37

8

1833-1842

10.13722/j.cnki.jrme.2018.0080

国家自然科学基金资助项目（51704168） 中国博士后科学基金（2016M602417）

本校为第一且通讯机构

为了探索加载速率对裂隙岩体强度规律及变形特征的影响,分析加载速率与裂隙倾角复合因素影响下裂隙岩体破断响应规律,室内制备含不同倾角裂隙类岩石试件,基于RMT–150B对其进行不同加载速率下的单轴压缩试验,结果表明:在静态加载条件下,裂隙体峰值强度对应应变值与加载速率呈负相关性;相同裂隙倾角下,裂隙体峰值强度呈现出随加载速率的增加而非线性增大的规律;相同加载速率下,裂隙体峰值强度受控于裂隙倾角,在裂隙倾角为15°时出现最小值;裂隙体弹性模量同时受裂隙倾角和加载速率的影响,并随裂隙倾角的增大而近似线性增大,随加载速率的增加而非线性增大,并趋近于一个常数。为弥补室内试验测试技...

To investigate the influence of loading rate on the strength and deformation of rock,we analyzed the fracturing characteristics of rock containing cracks with various inclination angles under various loading rates. Uniaxial compression tests under various loading rates on the prefabricated rock specimens,containing cracks with various inclination angles,were conducted using the testing system RMT-150B. The results show that the peak strains correlate negatively to the loading rates when the static load is applied. For the samples with the same ...