连续充填型结构面峰前循环破坏特征及再载强度特性试验研究

doi:10.13722/j.cnki.jrme.2021.0266

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Abstract In this paper，a series of cycle loading tests on continuous infilled artificial rock joint specimens were performed by using the self-designed cyclic loading test apparatus to investigate the failure characteristics in the pre-peak cyclic loading stage and the reloading mechanical behaviors. The influences of cyclic number，cyclic frequency，cyclic amplitude，infilled thickness，infilled material strength and cyclic normal stress were considered extensively. It was found that in the pre-peak cyclic stage，the joint failure includes four steps such as formation of infilled material fractures，loose fragments of the infilled material，wear of the loosed fragments wear and mixed wear of the rock joint fragments and the loosed fragments. With increasing the cyclic number，the frequency，the amplitude or the cyclic normal stress，the reloading peak shear strength decreases. The change rate of the reloading shear strength decreases with the infilled thickness and the infilled material strength. The reloading peak shear displacement of the joints is positively correlated with the cyclic frequency，the amplitude，the thickness and the strength of the infilled material，but negatively correlated with the cyclic normal stress. Besides，the reloading maximum dilation displacement decreases with the number of cycles，and the shear displacement of the joint for obtaining the maximum normal dilatancy displacement also has a trend of further increase. Finally，Taking the critical frequency and the critical cyclic number as references，the critical conditions for remaining and terminating the pre-peak cyclic loading stage were presented. Based on multiple regression，a prediction model for the strength of the infilled joint under different influence factors was proposed. The results indicate that the model can reliably predict the variety of the reloading peak shear strength of the infilled joints after various pre-peak cycles.

Key words： rock mechanics continuous infilled rock joints pre-peak cyclic loading reloading mechanical behavior strength degradation strength regression model

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	Articles by authors
	HE Liu1
	ZHAO Zhiming1
	PAN Yue1
	2
	LIU Lang1

Cite this article:

HE Liu1,ZHAO Zhiming1,PAN Yue1, et al. Experimental study on the damage properties and reloading strength characteristics of continuous infilled rock joints under pre-peak cyclic loading[J]. , 2021, 40(10): 2027-2037.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0266 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I10/2027

[1] 周友华，胡奉湘，饶云阶，等. 地震应力产生传递与集中机制的研究[J]. 国际地震动态，2004，34(11)：8–14.(ZHOU Youhua，HU Fengxiang，RAO Yunjie，et al. Researches on the mechanisms for the transform and concentration of seismic stresses[J]. Recent Developments in World Seismology，2004，34(11)：8–14.(in Chinese))
[2] MIRZAGHORBANALI A，NEMCIK J，AZIZ N. Effects of cyclic loading on the shear behaviour of infilled rock joints under constant normal stiffness conditions[J]. Rock Mechanics and Rock Engineering，2014，47(4)：1 373–1 391.
[3] MIRZAGHORBANALI A，NEMCIK J，AZIZ N. Effects of shear rate on cyclic loading shear behaviour of rock joints under constant normal stiffness conditions[J]. Rock Mechanics and Rock Engineering，2014，47(5)：1 931–1 938.
[4] HAN G，JING H，JIANG Y，et al. Effect of cyclic loading on the shear behaviours of both unfilled and infilled rough rock joints under constant normal stiffness conditions[J]. Rock Mechanics and Rock Engineering，2020，53(1)：31–57.
[5] 魏继红，王武超，杨圆圆，等. 重复剪切作用下充填物对结构面力学性质的影响[J]. 工程地质学报，2017，25(6)：1 482–1 490.(WEI Jihong，WANG Wuchao，YANG Yuanyuan，et al. Study on the influence of filling on mechanical properties of structural surface under repeated shear condition[J]. Journal of Engineering Geology，2017，25(6)：1 482–1 490.(in Chinese))
[6] 朱小明，李海波，刘博. 循环剪切荷载作用下含二阶起伏体模拟岩石节理力学特性研究[J]. 岩土力学，2014，35(2)：371–379.(ZHU Xiaoming，LI Haibo，LIU Bo. Study of mechanical characteristics of simulated rock joints with second-order asperity under cyclic shear loading[J]. Rock and Soil Mechanics，2014，35(2)：371–379.(in Chinese))
[7] 尹显俊，王光纶，张楚汉. 岩体结构面切向循环加载本构关系研究[J]. 工程力学，2005，22(6)：97–103.(YIN Xianjun，WANG Guanglun，ZHANG Chuhan. Study of constitutive model for rock interfaces and joints under cyclic shear loading[J]. Engineering Mechanics，2005，22(6)：97–103.(in Chinese))
[8] 夏才初，宋英龙，唐志成，等. 反复直剪试验节理强度与粗糙度变化的研究[J]. 中南大学学报：自然科学版，2012，43(9)：3 589–3 594. (XIA Caichu，SONG Yinglong，TANG Zhicheng，et al. Shear strength and morphology characteristic evolution of joint surface under cyclic loads[J]. Journal of Central South University：Science and Technology，2012，43(9)：3 589–3 594.(in Chinese))
[9] HOMAND-ETIENNE F，LEFEVRE F，BELEM T，et al. Rock joints behavior under cyclic direct shear tests[M]. [S. l.]：[s. n.]，1999：399–406.
[10] NEMCIK J，MIRZAGHORBANALI A，AZIZ N. An elasto-plastic constitutive model for rock joints under cyclic loading and constant normal stiffness conditions[J]. Geotechnical and Geological Engineering，2014，32(2)：321–335.
[11] SOULEY M，HOMAND F，AMADEI B. An extension to the Saeb and Amadei constitutive model for rock joints to include cyclic loading paths[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1995，32(2)：101–109.
[12] JAFARI M K，PELLET F，BOULON M，et al. Experimental study of mechanical behaviour of rock joints under cyclic loading[J]. Rock Mechanics and Rock Engineering，2004，37(1)：3–23.
[13] JING L，STEPHANSSON O，NORDLUND E，et al. Study of rock joints under cyclic loading conditions[J]. Rock Mechanics and Rock Engineering，1993，26(3)：215–232.
[14] 邓建，肖明，谢冰冰，等. 循环荷载下岩体结构面本构关系与积分算法研究[J]. 岩土工程学报，2017，39(6)：1 048–1 057.(DENG Jian，XIAO Ming，XIE Bingbing，et al. Constitutive relation and integration algorithm for rock discontinuities under cyclic loading[J]. Chinese Journal of Geotechnical Engineering，2017，39(6)：1 048–1 057.(in Chinese))
[15] 刘博，李海波，刘亚群. 循环剪切荷载作用下岩石节理变形特性试验研究[J]. 岩土力学，2013，34(9)：2 475–2 481.(LIU Bo，LI Haibo，LIU Yaqun. Experimental study of deformation behavior of rock joints under cyclic shear loading[J]. Rock and Soil Mechanics，2013，34(9)：2 475–2 481.(in Chinese))
[16] 刘博，李海波，朱小明. 循环剪切荷载作用下岩石节理强度劣化规律试验模拟研究[J]. 岩石力学与工程学报，2011，30(10)：2 033–2 039.(LIU Bo，LI Haibo，ZHU Xiaoming. Experiment simulation study of strength degradation of rock joints under cyclic shear loading[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(10)：2 033–2 039.(in Chinese))
[17] 许江，瞿佳美，刘义鑫，等. 循环剪切荷载作用下充填物对结构面剪切特性影响试验研究[J]. 岩土力学，2019，40(5)：1 627–1 637. (XU Jiang，QU Jiamei，LIU Yixin，et al. Influence of filling material on the behavior of joints under cyclic shear loading[J]. Rock and Soil Mechanics，2019，40(5)：1 627–1 637.(in Chinese))
[18] JAFARI M K，AMINI HOSSEINI K，PELLET F，et al. Evaluation of shear strength of rock joints subjected to cyclic loading[J]. Soil Dynamics and Earthquake Engineering，2003，23(7)：619–630.
[19] FATHI A，MORADIAN Z，RIVARD P，et al. Shear mechanism of rock joints under pre-peak cyclic loading condition[J]. International Journal of Rock Mechanics and Mining Sciences，2016，83：197–210.
[20] 刘新荣，邓志云，刘永权，等. 峰前循环剪切作用下岩石节理损伤特征与剪切特性试验研究[J]. 岩石力学与工程学报，2018，37(12)：2 664–2 675.(LIU Xinrong，DENG Zhiyun，LIU Yongquan，et al. An experimental study on the cumulative damage and shear properties of rock joints under pre-peak cyclic shear loading[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(12)：2 664–2 675.(in Chinese))
[21] KOU M，LIU X，TANG S，et al. Experimental study of the prepeak cyclic shear mechanical behaviors of artificial rock joints with multiscale asperities[J]. Soil Dynamics and Earthquake Engineering，2019，120：58–74.
[22] 祁生文，伍法权，刘春玲，等. 地震边坡稳定性的工程地质分析[J].岩石力学与工程学报，2004，23(16)：2 792–2 797.(QI Shengwen，WU Faquan，LIU Chunling，et al. Engineering geology analysis of stability of slope under earthquake[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(16)：2 792–2 797.(in Chinese))