ZHU Qing-qing, MIAO Qiang-qiang, CHEN Zheng-han, YAO Zhi-hua, ZHANG Jun-hao. Elastoplastic dilatancy relations of unsaturated clayey sand[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(S1): 65-72. DOI: 10.11779/CJGE2018S1011
    Citation: ZHU Qing-qing, MIAO Qiang-qiang, CHEN Zheng-han, YAO Zhi-hua, ZHANG Jun-hao. Elastoplastic dilatancy relations of unsaturated clayey sand[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(S1): 65-72. DOI: 10.11779/CJGE2018S1011

    Elastoplastic dilatancy relations of unsaturated clayey sand

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    • Received Date: May 14, 2017
    • Published Date: August 24, 2018
    • The modified Lade model and Barcelona unsaturated elastoplastic model are used to describe the stress and strain relationship of unsaturated clayey sand, The tests on three types of stress paths tests are conducted. The elastoplastic constitutive relations are deduced considering suction and net confining pressure at the same time. The changing laws of elastic strain, plastic strain, plastic work and yield function are given by adjusting the suction and net confining pressure. A formula for volume change that can express the stress dilatancy of unsaturated clayey sand is developed. The results of this formula agree with the test ones. It is shown that this theory is suitable for unsaturated clayey sand. At the same time, the peak value points and the stress dilatancy are greatly related to the net confining pressure and the matric suction.
    • [1]
      沈珠江. 理论土力学[M]. 北京: 中国水利水电出版社, 2000.
      (SHEN Zhu-jiang.Theoretical soil mechanics[M]. Beijing: China Water & Power Press, 2000. (in Chinese))
      [2]
      郑颖人, 沈珠江, 龚晓南. 岩土塑性力学原理[M]. 北京: 中国建筑工业出版社, 2003.
      (ZHENG Ying-ren, SHE Zhu-jiang, GONG Xiao- nan. The principles of geotechnical plastic mechanics[M]. Beijing: China Architecture and Building Press , 2003. (in Chinese))
      [3]
      ROWE P W.The stress-dilatancy relation for static equilibrium of an assembly of particles in contact[J]. Proc of the Royal Society of London, 1962, 269(1339): 500-527.
      [4]
      ROWE P W, TH BANDEN L, LEE I K.Energy components during The triaxial cell and direct shear tests[J]. Géotechnique, 1964, 14(3): 247-261.
      [5]
      魏汝龙. 论土的剪胀性[J]. 水利学报, 1963(6): 31-40.
      (WEI Ru-long.Study on the dilatancy of soils[J]. Journal of Hydrilic Engineering, 1963(6): 31-40. (in Chinese))
      [6]
      MATSUOKA H.A microscopic study on shear mechanism of granular materials[J]. Soils and Foundations, 1974, 14(1): 29-43.
      [7]
      ODA M.On stress-dilatancy relation of sand in simple shear[J]. Soils and Foundations, 1975, 15(2):17-29.
      [8]
      LADE P V, DUNCAN J M.Elasto-plastic stress-strain theory for cohensionless soil[J]. ASCE 1975, 1(10): 037-053.
      [9]
      LADE P V.Elasto-plastic stress-strain theory for cohensionless with curved yield surface[J]. International Journal of Solids and Structures, 1977, 13: 1019-1035.
      [10]
      LADE P V.Single harding constitutive models for frictional materials: Ⅰ plastic potential function[J]. Computer and Geotechnics, 1988, 5(1): 307-324.
      [11]
      LADE P V.Single harding constitutive models for frictional materials: Ⅱ yield criterion and plastic work contours[J]. Computer and Geotechnics, 1988, 6(1): 13-29.
      [12]
      LADE P V, KIN M K.Single harding constitutive models for frictional materials: Ⅲ comparisons with experimental data[J]. Computer and Geotechnics, 1988, 6(1): 31-47.
      [13]
      张问清, 赵锡宏, 董建国. 上海粉砂土弹塑性应力-应变模型探讨[J]. 岩土工程学报, 1982, 4(4): 159-173.
      (ZHANG Wen-qing, ZHAO Xi-hong, DONG Jian-guo.A study of elastoplastic model for shanghai silty-sand[J]. Chinese Journal of Geotechnical Engineering, 1982, 4(4): 159-173. (in Chinese))
      [14]
      张建民. 砂土的可逆性和不可逆性剪胀规律[J]. 岩土工程学报, 2000, 22(1): 12-17.
      (ZHANG Jian-min.Reversible and irreversible dilatancy of sand[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(1): 12-17. (in Chinese))
      [15]
      李广信, 郭瑞平. 土的卸载体缩与可恢复剪胀[J]. 岩土工程学报, 2000, 22(2): 158-161.
      (LI guang-xin, GUO Rui-ping. Volume-contraction in unloading of shear tests and reversible dilation of soils[J]. Chinese Journal of Geotechnical Engineering 2000, 22(2): 158-161. (in Chinese))
      [16]
      迟明杰, 赵成刚, 李小军. 砂土剪胀机理的研究[J].土木工程学报, 2009, 42(3): 99-104.
      (CHI Ming-jie, ZHAO Chen-gang, LI Xiao-jun.Stress-dilation mechanism of sands[J]. Chinese Civil Engineering Journal, 2009, 42(3): 99-104. (in Chinese))
      [17]
      陈正汉, 谢定义, 王永胜. 非饱和土的水气运动规律及其工程性质研究[J]. 岩土工程学报, 1993, 15(3): 9-20.
      (CHEN Zheng-han, XIE Ding-yi, WANG Yong-sheng.Experimental studies of laws of fluid motion,suction and pore pressures in unsaturated soil[J]. Chinese Journal of Geotechnical Engineering, 1993, 15(3): 9-20. (in Chinese))
      [18]
      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 Zheng-han.Deformation, strength, yield and moisture change of a remolded unsaturated loess[J]. Chinese Journal of Geotechnical Engineering, 1999, 21(1): 82-90. (in Chinese))
      [19]
      苗强强, 张磊, 陈正汉, 等. 非饱和含黏砂土的广义土-水特征曲线试验研究[J]. 岩土力学, 2010, 31(4): 102-106.
      (MIAO Qiang-qiang, ZHANG Lei, CHEN Zheng-han, et al.Experimental study on generalized SWCC of unsaturated sand and containing clay[J]. Rock and Soil Mechanics, 2010, 31(1): 102-106. (in Chinese))
      [20]
      张磊, 苗强强, 陈正汉, 等. 重塑非饱和含黏砂土变形强度特性的三轴试验[J]. 后勤工程学院学报, 2010, 25(6): 6-11.
      (ZHANG Lei, MIAO Qiang-qiang, CHEN Zheng-han, et al.Triaxial test of deformation and strength change of a remolded unsaturated sand[J]. Journal of Logistical Engineering University, 2010, 25(6): 6-11. (in Chinese))
      [21]
      ALONSO E E, GENS A, JOSA A.A constitutive model for partially saturated soils[J]. Géotechnique, 1990, 40(3): 405-430.
      [22]
      陈正汉, 周海清, FREDLUND D G.非饱和土的非线性模型及其应用[J]. 岩土工程学报, 1999, 21(5): 603-608.
      (CHEN Zheng-han, ZHOU Hai-qing, FREDLUND D G.Nonlinear model for unsaturated soils and its application[J]. Chinese Journal of Geotechnical Engineering, 1999, 21(5): 603-608. (in Chinese))

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