状态变量相关三维饱和黏土结构性本构模型#br#

doi:10.13722/j.cnki.jrme.2019.0729

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Abstract In view of the characteristics of natural structural saturated clays such as large porosity，high strength and certain cementation，the UH model of over-consolidated soils was expanded into a three-dimensional structural model related to state variables. The left endpoint of the yield surface in the p-q space was shifted to the left of the origin，so that the cementing characteristics of a certain extent of stretching could be considered. The evolution equation of cementing strength parameters was proposed. By introducing a state parameter χ and deducing it’s expression，the yield surface equation was corrected so that the dilatancy equation can describe the strength characteristics of the variable phase stress ratio of the body changing from shear to dilatancy. The concept of structural stress ratio parameter R* was proposed and used to modify the uniform hardening parameter. By using the transformation stress method based on t criterion，a generalized model of stress representation was proposed，which can describe the true triaxial stress-strain relationship. The comparison between test and prediction results shows that the proposed model has strong applicability.

Key words： soil mechanics structural saturated clay over-consolidated soil state variable dilatancy constitutive model

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	Articles by authors
	WAN Zheng1
	2
	MENG Da1
	2
	SONG Chenchen3
	ZHAO Xiaoguang1
	2

Cite this article:

WAN Zheng1,2,MENG Da1, et al. A three-dimensional structural constitutive model of saturated clays related to state variables[J]. , 2020, 39(4): 817-828.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0729 OR http://rockmech.whrsm.ac.cn/EN/Y2020/V39/I4/817

[4]	沈珠江. 结构性黏土的弹塑性损伤模型[J]. 岩土工程学报，1993，15(3)：21-28.(SHEN Zhujiang. An elasto-plastic damage model for cemented clay[J]. Chinese Journal of Geotechnical Engineering，1993，15(3)：21-28.(in Chinese))
[1]	BURLAND J B. On the compressibility and shear strength of natural clays[J]. Geotechnique，1990，40(3)：329-378.
[21]	WALKER L K，RAYMOND G P. Anisotropic consolidation of Leda clay[J]. Canadian Geotechnical Journal，1969，6(3)：271-286.
[18]	王立忠，沈恺伦. K0 固结结构性软黏土的本构模型[J]. 岩土工程学报，2007，29(4)：496-504.(WANG Lizhong，SHEN Kailun. A constitutive model of consolidated structured soft clays[J]. Chinese Journal of Geotechnical Engineering，2007，29(4)：496-504.(in Chinese))
[14]	熊传祥，龚晓南. 一种改进的软土结构性弹塑性损伤模型[J]. 岩土力学，2006，27(3)：395-404.(XIONG Chuanxiang，GONG Xiaonan. An updated elastoplastic damage model for structural soft-clays[J]. Rock and Soil Mechanics，2006，27(3)：395-404.(in Chinese))
[2]	ROUAINIA M，MUIR W D. A kinematic hardening constitutive model for natural clays with loss of structure[J]. Geotechnique，2000，50(2)：153-164.
[7]	沈珠江，陈铁林. 岩土破损力学——结构类型与荷载分担[J]. 岩石力学与工程学报，2004，23(13)：2 137-2 141.(SHEN Zhujiang，CHEN Tielin. Breakage mechanics of geomaterial—structure types and load sharing[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(13)：2 137-2 141.(in Chinese))
[3]	沈珠江. 岩土破损力学：理想脆弹塑性模型[J]. 岩土工程学报，2003，25(3)：253-257.(SHEN Zhujiang. Breakage mechanics for geological materials： An ideal brittle-elasto-plastic model[J]. Chinese Journal of Geotechnical Engineering，2003，25(3)：253-257.(in Chinese))
[12]	DESAI C S，SOMASUNDARAM S，FRANTZISKONIS G. Ahierarchical approach for constitutive modeling of geologic materials[J]. International Journal for Numerical and Analytical Methods in Geomechanics，1986，10(3)：225-257.
[15]	刘汉龙，肖杨，崔允亮. 结构性软土三维弹塑性损伤本构模型研究[J]. 岩土工程学报，2011，33(4)：637-642.(LIU Hanlong，XIAO Yang，CUI Yunliang. Elasto-plastic damage constitutive model in three-dimensional stress space for structured soft soils[J]. Chinese Journal of Geotechnical Engineering，2011，33(4)：637-642.(in Chinese))
[24]	姚仰平，路德春，周安楠，等. 广义非线性强度理论及其变换应力空间[J]. 中国科学：E辑，2004，34(11)：1 283-1 299.(YAO Yangping，LU Dechun，ZHOU Annan，et al. Generalized nonlinear strength theory and transformed stress space[J]. Science in China：Ser. E，2004，34(11)：1 283-1 299.(in Chinese))
[27]	CHOWDHURY E Q，NAKAI T. Consequence of the tijconcept and a new modelling approach[J]. Computers and Geotechnics. 1998，23(4)：131-164.
[5]	刘恩龙，沈珠江. 岩土材料不同应力路径下脆性变化的二元介质模拟[J]. 岩土力学，2006，27(2)：261-267.(LIU Enlong，SHEN Zhujiang. Binary medium modeling of the brittleness variety of geomaterials under different stress paths[J]. Rock and Soil Mechanics，2006，27(2)：261-267.(in Chinese))
[9]	LIU M D，CARTER J P. Modelling the destructuring of soils during virgin compression[J]. Géotechnique，2000，50(4)：479-483.
[11]	罗晓辉，白世伟. 结构性土体强度的统计损伤模型分析[J]. 岩土工程学报，2004，26(5)：712-714.(LUO Xiaohui，BAI Shiwei. Model analysis on statistical damage of strength of cemented soil[J]. Chinese Journal of Geotechnical Engineering，2004，26(5)：712-714.(in Chinese))
[13]	DESAI C S，TOTH J. Disturbed state constitutive modeling based on stress-strain and nondestructive behavior[J]. International Journal of Solids and Structures，1996，33(11)：1 619-1 650.
[17]	陈波，孙德安，金盼. 海相沉积软黏土的弹塑性本构模型研究[J]. 岩土力学，2015，36(3)：730-738.(CHEN Bo，SUN Dean，JIN Pan. An elastoplastic constitutive model for marine sedimentary soft clays[J]. Rock and Soil Mechanics，2015，36(3)：730-738.(in Chinese))
[19]	MAHDI T，YANNIS F D，RALF P. A destructuration theory and its application to Saniclay model[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2010，24：723-735.
[23]	YAO Y P，WANG N D. Transformed stress method for generalizing soil constitutive models[J]. Journal of Engineering Mechanics，2014，140(3)：614-629.
[25]	YAO Y P，TIAN Y，GAO Z W. Anisotropic UH model for soils based on a simple transformed stress method[J]. International Journal for Numerical and Analytical Mechods in Geomechanics，2017，41(1)：54-78.
[26]	YAO Y P，KONG Y X. Extended UH model： three-dimensional unified hardening model for anisotropic clays[J]. Journal of Engineering Mechanics，2011，138(7)：853-866.
[10]	沈珠江. 结构性黏土的堆砌体模型[J]. 岩土力学，2000，21(1)：1-4.(SHEN Zhujiang. A masonry model for structured clays[J]. Rock and Soil Mechanics，2000，21(1)：1-4.(in Chinese))
[22]	BALASUBRAMANIAN A S，HWANG Z M. Yielding of weathered Bankok clay[J]. Soils and Foundations，1980，20(2)：1-15
[8]	LIU M D，CARTER J P. Virgin compression of structured soils[J]. Géotechnique，1999，49(1)：43-57.
[20]	ASAOKA A，NAKANO M，NODA T. Superloading yield surface concept for highly structured soil behavior[J]. Soils and Foundations，2000，40(2)：99-110.
[6]	DESAI C S，YOUZHI M. Modeling of joints and interfaces using the disturbed-state concept[J]. International Journal of Numerical and Analytical Method in Geomechanics，1992，16： 623-653.
[16]	ZHU E Y，YAO Y P. Structured UH model for clays[J]. Transportation Geotechnics，2015，(3)：68-79.
[28]	NAKAI T，HINOKIO M. A simple elastoplastic model for sand considering the stress path dependency in three-dimensional stresses[J]. Soils and Foundations，2004，44(2)：53-70.