Experimental Study on Mechanical Properties and Cracking Behaviors of T-Shaped Flaw-Contained Rock-like Materials Under Cyclic Loading

doi:10.3389/feart.2021.768077

	Experimental Study on Mechanical Properties and Cracking Behaviors of T-Shaped Flaw-Contained Rock-like Materials Under Cyclic Loading
	Cui, Lan 1,4; Liu, Yi 3; Sheng, Qian 1,4; Xiao, Ping 2,4
刊名	FRONTIERS IN EARTH SCIENCE
	2021-10-18
卷号	9 页码:15
关键词	crack T-shaped cyclic load strength failure mode
DOI	10.3389/feart.2021.768077
英文摘要	Geotechnical hazards such as debris flows, rock falls in slopes, rock collapse, and rockburst in underground mining or caverns are tightly correlated to the mechanical behavior of natural rock mass stability. Strength and failure mode of the natural rock mass are governed by the presented fissures. In this paper, samples containing T-shaped fissures with different geometry were prepared by rock-like materials and tested under varying uniaxial cyclic loading compression. The effect of T-shaped fissures with different geometry and the strain rate and loading frequency on the strength of tested samples were studied, and the failure mode of the samples containing T-shaped cross fissures under different working conditions was observed. The results show that the function of the minor fissures was not completely negative, and the strength of T-shaped fissure samples containing a major fissure with different inclination angles presented a varying trend with the increasing included angle between the major and minor fissures. Moreover, the strength of the cracked samples increased with the increase of the strain rate and loading frequency, and the larger the included angles between the major and minor fissures, the more sensitive the T-shaped fissure sample was to the change of frequency, but without a noticeable linear correlation relationship between the strength of the sample and the included angles between the major and minor fissures. In addition, the existence of the minor fissures had a significant impact on the failure mode of the sample, and the failure mode of the samples containing T-shaped cross fissures of the same geometry under the uniaxial compression and the uniaxial cyclic load was equivalent.
资助项目	National Science Foundation of China[52009129]
WOS研究方向	Geology
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000715659200001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/28364]
专题	中科院武汉岩土力学所
通讯作者	Sheng, Qian
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Shenyang Univ Technol, Shenyang, Peoples R China 3.China Railway Middle Real Estate Co LTD, Zhengzhou, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Cui, Lan,Liu, Yi,Sheng, Qian,et al. Experimental Study on Mechanical Properties and Cracking Behaviors of T-Shaped Flaw-Contained Rock-like Materials Under Cyclic Loading[J]. FRONTIERS IN EARTH SCIENCE,2021,9:15.
APA	Cui, Lan,Liu, Yi,Sheng, Qian,&Xiao, Ping.(2021).Experimental Study on Mechanical Properties and Cracking Behaviors of T-Shaped Flaw-Contained Rock-like Materials Under Cyclic Loading.FRONTIERS IN EARTH SCIENCE,9,15.
MLA	Cui, Lan,et al."Experimental Study on Mechanical Properties and Cracking Behaviors of T-Shaped Flaw-Contained Rock-like Materials Under Cyclic Loading".FRONTIERS IN EARTH SCIENCE 9(2021):15.