法向循环加卸载条件下节理力学特征研究

doi:10.13722/j.cnki.jrme.2015.0610

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Abstract

According to experimental data of joint normal cyclic loading/unloading，joint normal stiffness expressions are gained from hyperbolic function and semi-log function respectively which are used to fit joint normal stiffness-closure curves. These expressions are implemented into continuously yielding joint model and cyclic loading/unloading programs are edited by FISH language embedded within three-dimensional distinct element code(3DEC). The numerical simulation of a rock joint under normal cyclic loading/unloading is conducted. The results show that the numerical simulation method in this paper is valid and that joint normal stiffness values gained from hyperbolic function are different from semi-log function，but both of normal stress-closure curves from two functions are really close to laboratory test results and meet joint properties under normal cyclic loading/unloading. The results can finally lay a foundation for studies on the dynamic properties of rock mass，the dynamic response analysis and the assessment of stability and safety of slope in rock mass engineering.

Key words： rock mechanics continuously yielding joint model joint normal stiffness joint normal closure normal cyclic loading/unloading test of joint

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	Articles by authors
	WU Shunchuan1
	GAO Yanhua1
	LI Yongbing1
	LIU Bo1
	CHAI Jinfei1
	GAO Bin2

Cite this article:

WU Shunchuan1,GAO Yanhua1,LI Yongbing1, et al. A STUDY OF MECHANICAL PROPERTIES OF JOINT UNDER NORMAL CYCLIC LOADING/UNLOADING[J]. , 2015, 34(S2): 3683-3693.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.0610 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3683

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