节理面强度弱化与强化行为的模拟

doi:10.13722/j.cnki.jrme.2018.0704

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (444 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In shear tests of rock joints，constant normal load(CNL)，constant normal displacement and constant normal stiffness(CNS) conditions are used. Compared to the first two conditions，Shear stress-displacement curves display more complicated in the case of CNS condition. Aiming to evaluate shear behavior of rock joints under CNS，an extension was made to model strength softening and strength hardening processes in a unified form on the basis of the approach which takes strain softening process as a series of stress drop and plastic flow，and the corresponding formulation was presented. Shear behavior was modeled under various CNS conditions. The results show that shear stress-displacement curve displays in strength softening mode when the normal stiffness is small but that strength hardening mode appears while the normal stiffness increases. The shear stress-shear displacement curves，normal displacement-shear displacement curves and normal stress-shear displacement curves were compared with test results and good agreements between them were observed，which indicates that the presented procedure is reliable. Furthermore，the shear behavior of rock joints was studied under different combinations of the initial normal stress and the normal stiffness.

Key words： rock mechanics rock joints constant normal stiffness(CNS) strength softening strength hardening

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Shuilin1
	GUO Mingwei1
	SUN Guanhua1
	KE Changren2
	LI Zedong2

Cite this article:

WANG Shuilin1,GUO Mingwei1,SUN Guanhua1, et al. Modeling of softening and hardening behaviors of the#br# shear strength of rock joints[J]. , 2018, 37(12): 2742-2750.

URL:

http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.0704 OR http://www.rockmech.org/EN/Y2018/V37/I12/2742

[1]	刘雄贞. 三峡工程岩体结构面刚度特性试验[J]. 长江科学院院报，1998，15(3)：25-27.(LIU Xiongzhen. Experimental study on stiffness characteristics of rockmass structural face in TGP[J]. Journal of Yangtze River Scientific Research institute，1998，15(3)：25-27.(in Chinese))
[2]	孙宗颀. 不连续面应力变形性质研究[J]. 岩石力学与工程学报，1987，6(4)：287-300.(SUN Zongyin. Study on mechanical characteristics of rock mass discontinuities[J]. Chinese Journal of Rock Mechanics and Engineering，1987，6(4)：287-300.(in Chinese))
[7]	JIANG Y，XIAO J，TANABASHI Y，et al. Development of an automated servo-controlled direct shear apparatus applying a constant normal stiffness condition[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(2)：275-286.
[3]	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. Experimental simulation study of strength degradation of rock joints under cyclic shear[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(10)：2 033-2 039.(in Chinese))
[13]	唐志成，夏才初，肖素光. 节理剪切应力-位移本构模型及剪胀现象分析[J]. 岩石力学与工程学报，2011，30(5)：917-925.(TANG Zhicheng，XIA Caichu，XIAO Suguang. Constitutive model for joint shear stress-displacement and analysis of dilation[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(5)：917-925.(in Chinese))
[15]	PLESHA M E. Constitutive models for rock discontinuities with dalatancy and surface degradation[J]. International Journal for Numerical and Analytical Methods in Geomechanics，1987，11：345-362.
[17]	DESAI S C，FISHMAN K L. Plasticity—based constitutive model with associated testing for joint[J]. Intenational Journal of Rock Mechanics and Mining Sciences and Geomechnics Abstracts，1991，28(1)：15-26.
[10]	SON B K. Shear behavior of rock joint under constant normal stiffness condition[Ph. D. Thesis][D]. Seoul：Seoul National University，2005.
[5]	BRADY B H G，BROWN E T. Rock mechanics for underground mining[M]. 3rd ed. Dordrecht：Springer Science，2004：122-123.
[8]	INDRARATNA B，HAQUE A，AZIZ N. Laboratory modeling of shear behavior of soft joints under constant normal stiffness conditions[J]. Geotechnical and Geological Engineering，1998，16：17-44.
[9]	JOHNSTON I W，LAM T S K，WILLIAMS A F. Constant normal stiffness direct shear testing for socketed pile design in weak rock[J]. Geotechnique，1987，37(1)：83-89.
[18]	WANG J G，ICHIKAWAB Y，LEUNG C F. A constitutive model for rock interfaces and joints[J]．International Journal of Rock Mechanics and Mining Sciences，2003，40(1)：41-53.
[19]	葛修润. 岩体中节理面、软弱夹层等的力学性质和模拟分析方法[J]. 岩土力学，1979，1(1)：54-75.(GE Xiurun. The mechanical behaviors and analog analytical method of joints and weak intercalations in rock mass[J]. Rock and Soil Mechanics，1979，1(1)：54-75.(in Chinese))
[28]	ALEJANO L R，ALONSO E. Considerations of the dilatancy angle in rocks and rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2005，42(4)：481-507.
[6]	INDRARATNA B，HAQUE A. Experimental study of shear behavior of rock joints under constant normal stiffness conditions[J]. International Journal of Rock Mechanics and Mining Sciences，1997，34(141)：1-14.
[16]	GRASSELLI G，EGGER P. Constitutive law for the shear strength of rock joints based on three-dimensional surface parameters[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(1)：25-40.
[26]	WANG S L，ZHENG H，LI C G，et al. A finite element implementation of strain-softening rock mass[J]. International Journal of Rock Mechanics and Mining Sciences，2011，48：67-76.
[4]	JING L，STEPHANSSON O，NORDLUND E. Study of rock joints under cyclic loading condition[J]. Rock Mechanics Rock Engineering，1993，26(3)：215-232.
[11]	LEE Y K，PARK J W，SONG J J. Model for the shear behavior of rock joints under CNL and CNS conditions[J]. International Journal of Rock Mechanics and Mining Sciences，2014，70：252-263.
[21]	方理刚. 岩石节理弹塑性本构关系[J]. 岩土工程学报，1996，18(3)：91-95.(FANG Ligang. Joint constitutive model for rock[J]. Chinese Journal of Geotechnical Engineering，1996，18(3)：91-95.(in Chinese))
[23]	肖卫国，兑关锁，陈铁林. 剪胀和破坏耦合的节理岩体本构模型的研究[J]. 岩石力学与工程学报，2009，28(12)：2 535-2 543.(XIAO Weiguo，DUI Guansuo，CHEN Tielin，et al. A study of constitutive model coupling dilatancy and degradation for jointed rock[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(12)：2 535- 2 543.(in Chinese))
[25]	ZHENG H，LIU D F，LEE C F，et al. Principle of analysis of brittle-plastic rock mass[J]. International Journal of Solids and Structure，2005，42(1)：139-158.
[27]	王水林，郭明伟，王万军，等. 节理面剪切应力-切向位移曲线峰值后区特性的初步研究[J]. 岩石力学与工程学报，2016，35(增2)：3 805-3 812.(WANG Shuilin，GUO Mingwei，WANG Wanjun，et al. A preliminary study of the post-peak characteristics of shear stress-displacement curves of joints[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.2)：3 805-3 812.(in Chinese))
[12]	GOODMAN R E，TAYLOR R L，BREKKE T L. A model for the mechanics of jointed rock[J]. Journal of the Soil Mechanics and Foundations Division，1968，94(3)：637-660.
[14]	卢应发，杨丽平，刘德富. 一种新的节理本构模型及几种新的滑坡稳定系数计算方法[J]. 岩石力学与工程学报，2013，32(12)：2 431-2 438.(LU Yingfa，YANG Lipin，LIU Defu. A new joint constitutive model and several new methods of stability coefficient calculation of landslides[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(12)：2 431-2 438.(in Chinese))
[20]	殷有泉. 考虑损伤的节理本构模型[J]. 工程地质学报，1994，2(4)：1-6.(YIN Youquan. Joint constitutive model considering damage[J]. Journal of Engineering Geology，1994，2(4)：1-6.(in Chinese))
[22]	戚国庆，汪斌，盛金昌，等. 一种新的节理弹塑性本构模型[J]. 金属矿山，2000，(10)：18-20.(QI Guoqing，WANG Bing，SHENG Jinchang，et al. A new joint elastoplastic constitutive model[J]. Metal Mine，2000，(10)：18-20.(in Chinese))
[24]	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)：98-103.(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)：98-103.(in Chinese))