基于应变能的黄土初始屈服和强度特性试验研究

doi:10.13722/j.cnki.jrme.2017.0120

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Abstract

The researches about primary yield and failure properties are significant foundation to establish a loading-unloading criterion for the undisturbed loess under the different stress paths. Bilinear relations between strain energy and the length of stress vector are used for determination of yield point.A series of experiments，including equal p and equal b tests and confined compression tests are conducted by using true triaxial apparatus，developed by Xi¢an University of Technology independently，and high-pressure consolidation apparatus. Applicability of determining primary yield of loess by the strain energyand three strength properties are studied. From the results of experiments，the relationships between strain energy and the length of stress vector are all parabolic. Structural yield pressures determined on the confined situation is consistent with that of bilinear logarithmic relations between specific volume and vertical stress. There is no high degree of linearization in the middle section of curves between strain energy and the length of stress vector on the condition of three dimensional stresses. The yield zones near the intersecting rangement are defined and its distributions are stripped distribution with different b-values. The failure surfaces of loess on theplane are curved-edge-triangle，which is described by lade yield criterion. The method of strain energy is applicative to analyze the primary yield and strength under the condition the confined and unconfined stresses.

Key words： soil mechanics loess primary yield strain energy stress path failure surface

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	Articles by authors
	CHEN Fei1
	SHAO Shengjun1
	2
	SHAO Shuai1

Cite this article:

CHEN Fei1,SHAO Shengjun1,2, et al. Experimental study on primary yield and strength characteristics of loess based on strain energy[J]. , 2017, 36(S2): 4151-4158.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.0120 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS2/4151

[1]	谢定义，姚仰平，党发宁.高等土力学[M].北京：高等教育出版社，2008：106-107.(XIEDingyi，YAOYangping，DANGFaning. Advanced soil mechanics[M]. Beijing：Higher Education Press，2008：106-107.(in Chinese))
[2]	郑颖人，孔亮.岩土弹塑性力学[M].北京：中国建筑工业出版社，2010：58-63.(ZHENG Yingren，KONG Liang. Geotechnical plastic mechanics[M].Beijing：China Architecture and Building Press，2010：58-63.(in Chinese))
[3]	JARDINE R J. Some observations on the kinematicnature of soil stiffness[J]. Soils and Foundations，1992，32(2)：111-124.
[4]	BIAREZ J，HICHERPY. Elementary mechanics of soil behaviour，vol. 1. Saturated remolded soils[M]. Rotterdam：Balkema，1994：40-49.
[5]	CROOKSJH A，GRAHAMJ. Geotechnical properties of the Belfast estuarine deposits[J].Geotechnique，1976，26(2)：293-315.
[6]	TAVENASF，ROSIERSD，LEROUEILJP，et al. The use of strain energy as a yield and creep criterion foroverconsolidatedclays[J].Geotechnique，1979，29(3)：285-303.
[7]	LEWKV. Yielding criteria and limit state in aWinnipeg clay[Ph. D. Thesis][D].Winnipeg，Man.：University of Manitoba，1981.
[8]	GRAHAMJ，NOONANML，LEWKV. Yield states andstress-strain relationships in a natural plastic clay[J].Canadian Geotechnical Journal，1983，20(3)，502-516.
[9]	GRAHAMJ. The 2003 R.M. hardy lecture：soil parameters for numerical analysis in clay[J].Canadian Geotechnical Journal，2006，43(2)：187-209.
[10]	CUI Y J，DELAGE P. Yielding and plastic behavior of an unsaturated compacted silt[J].Geotechnique，1996，46(2)：291-311.
[11]	陈正汉.重塑非饱和黄土的变形、强度、屈服和水量变化特性[J].岩土工程学报，1999，21(1)：82-90.(CHEN Zhenghan. Deformation strength yield and moisture change of a remolded unsaturated loess[J].Chinese Journal of Geotechnical Engineering，1999，21(1)：82-90.(in Chinese))
[12]	ROTTA G V，CONSOLI N C，PRIETTO P D M，et al. Isotropic yielding in an artificially cemented soil cured under stress[J]. Géotechnique，2003，53(5)：493-501.
[13]	XIAOHW，LEEFH，CHINBKG.Yielding of cement-treated marine clay[J]. Soils and Foundations，2014，54(3)：488-501.
[14]	周小文，刘攀，胡黎明，等. 结构性花岗岩残积土的剪切屈服特性试验研究[J]. 岩土力学，2015，36(增2)：157-163.(ZHOUXiaowen，LIU Pan，HU Liming，et al. An experimental study of shear yield characteristics of structuredgranite residual soil[J]. Rock and Soil Mechanics，2015，36(Supp.2)：157-163.(in Chinese))
[15]	陈瑜瑶，王敬林，郑颖人. 由试验数据拟合重庆红黏土的屈服条件[J].岩土力学，2001，22(4)：443-446.(CHEN Yuyao，WANG Jinglin，ZHENG Yingren. Fitting the yield criterion of Chongqing red clay by experimental data[J].Rock and Soil Mechanics，2001，22(4)：443-446.(in Chinese))
[16]	CALLISTOL，CALABRESI G. Mechanical behavior of a naturalsoft clay[J]. Geotechnique，1998，48(4)：495-513.
[1]	ALAWAJIH，ALAWIM，KOHY，etal. Experimental observations ofanisotropy in some stress-controlled tests on dry sand[C]// Yielding，Damage and Failure of Anisotropic SolidsMechanical Behaviour of a Natural Soft Clay 511. London：Mechanical Engineering Publications，1990：251-264.
[1]	YONGR N，MCKYES E. Yield and failure of clay under triaxialstresses[J].Journal of Soil Mechanics andFoundations Div.，1971，97(SM1)：159-176.
[2]	PRASHANTA，PENUMADUD. Effect of intermediate principal stress on overconsolidated kaolin c]ay[J].Journal of Geotechnical andGeoenvironmental Engineering，2004，130(3)：284-292.
[1]	PRASHANTA，PENUMADU D. Effect of overconsolidation and anisotropy of kaolin clay using true triaxialtesting[J]. Soils and Foundations，2005，45(3)：71-78.
[2]	MUKHERJEE M，GUPTA A，PRASHANT A. Drained instability analysis of sand under biaxial loading using a 3D material model[J]. Computers andGeotechnics，2016，79：130-145.
[1]	邵生俊，邓国华. 原状黄土的结构性强度特性及其在黄土隧道围岩压力分析中的应用[J]. 土木工程学报，2008，41(11)：93-98.(SHAO Shengjun，DENGGuohua.The strength characteristics of loess with different structuresand its application in analyzing the earth pressure on loess tunnel[J]. ChinaCivilEngineeringJournal，2008，41(11)：93-98.(in Chinese))
[2]	邵生俊，许萍，王强，等. 黄土各向异性强度特性的真三轴试验研究[J]. 岩土工程学报，2014，36(9)：1614-1623.(SHAO Shengjun，XU Ping，WANG Qiang，et al.True triaxial tests on anisotropic strength characteristics of loess[J]. Chinese Journal of Geotechnical Engineering，2014，36(9)：1614-1623.(in Chinese))
[1]	陈昌禄，邵生俊，罗爱忠，等. 结构性对原状黄土强度影响规律的真三轴试验研究[J]. 岩土工程学报，2013，35(12)：2322-2327. (CHEN Changlu，SHAOShengjun，LUO Aizhong，et al. True triaxialtests on structural effects on strength of intact loess[J].Chinese Journal of Geotechnical Engineering，2013，35(12)：2322-2327.(in Chinese))
[1]	邵生俊，罗爱忠，邓国华，等. 一种新型真三轴仪的研制与开发[J].岩土工程学报，2009，31(8)：1172-1179.(SHAOShengjun，LUOAizhong，DENGGuohua，et al.Development of a new true triaxial apparatus[J]. Chinese Journal of Geotechnical Engineering，2009，31(8)：1172-1179.(in Chinese))
[1]	SHAOS，WANGQ，LUOA，et al. Truetriaxialapparatus with rigid-flexible-flexible boundary and remolded loess testing[J]. Journal of Testing and Evaluation，2017，45(3)：1-10.
[1]	BUTTERFIELD R. A natural compression law for soils(an advance on e-lgp′)[J]. Geotechnique，1979，29(4)：469-480.
[1]	殷杰. 土结构性对天然软黏土压缩特性的影响[J]. 岩土力学，2012，33(1)：48-52.(YINJie.Effect of soil structure on compression behavior of natural soft clays[J]. Rock and Soil Mechanics，2012，33(1)：48-52.(in Chinese))