›› 2013, Vol. 34 ›› Issue (12): 3431-3436.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of shear dilatancy behaviors of coarse-grained soil in large-scale triaxial tests under K0-consolidation condition

CHU Fu-yong1, 2, ZHU Jun-gao3, YIN Jian-hua4   

  1. 1. Department of Civil Engineering, Lishui University, Lishui, Zhejiang 323000, China; 2. Key Laboratory of Hydraulic and Water-way Engineering of Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, China; 3. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 4. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China
  • Received:2013-06-21 Online:2013-12-10 Published:2013-12-19

PDF (Chinese)

1499

Abstract: Using large-scale shearing device, consolidation-drained triaxial test and isotropic consolidation-drained triaxial test under different confining pressures are performed for three relative densities (0.9, 0.8, 0.7) overburden material of ShuangJiangKou earth dam. The difference between dilatancy behaviours of coarse-grained soil under -consolidation and isotropic consolidation is investigated. Meanwhile, applicability of the modified Rowe dilatancy equation for coarse-grained soils under -consolidation is tested. The test results show that the dilatancy under -consolidation is more remarkable than that under isotropic consolidation; and this difference is more obvious for coarse-grained soils with lower density. By means of the nonlinear fitting of the results of triaxial tests, a relationship formula for coarse-grained soils under -consolidation and isotropic consolidation among dilatancy factor and relative density and confining pressure is obtained, according to which, the dilatancy’ strength of coarse-grained soil under different consolidations can be judged. For the coarse-grained materials under -consolidation, of which dilatancy characteristics can be reflected well by the modified Rowe dilatancy equation.

Key words: -consolidation condition, large-scale triaxial test, dilatancy, coarse grained soil

CLC Number: 

  • TU 411.5
[1] LIU Si-hong, SHEN Chao-min, MAO Hang-yu, SUN Yi. State-dependent elastoplastic constitutive model for rockfill materials [J]. Rock and Soil Mechanics, 2019, 40(8): 2891-2898.
[2] LI Jian-peng, GAO Ling, MU Huan-sheng. Dilatancy characteristics of sandstone and its function of dilatancy angle under high confining pressure and unloading conditions [J]. Rock and Soil Mechanics, 2019, 40(6): 2119-2126.
[3] HE Zi-lu, LIU Wei, HE Si-ming, YAN Shuai-xing, . Shear dilatancy mechanism and process simulation of rapid sliding of saturated loose deposits [J]. Rock and Soil Mechanics, 2019, 40(6): 2389-2396.
[4] WANG Feng-yun, QIAN De-ling, . Dilatancy analysis for a circular tunnel excavated in rock mass based on unified strength theory [J]. Rock and Soil Mechanics, 2019, 40(5): 1966-1976.
[5] ZHU Jun-gao, JIANG Ming-jie, LU Yang-yang, JI En-yue, LUO Xue-hao, . Experimental study on influence of stress state on at-rest earth pressure coefficient for coarse grained soil [J]. Rock and Soil Mechanics, 2019, 40(3): 827-833.
[6] ZHOU Hui, CHENG Guang-tan, ZHU Yong, CHEN Jun, LU Jing-jing, CUI Guo-jian, YANG Pin-qing, . Experimental study of shear deformation characteristics of marble dentate joints [J]. Rock and Soil Mechanics, 2019, 40(3): 852-860.
[7] LU Yong, ZHOU Guo-qing , YANG Dong-ying, SONG Jia-qing, . Explicit calculation of sand unified model combining shear dilatancy softening and shear shrinkage hardening [J]. Rock and Soil Mechanics, 2019, 40(3): 978-986.
[8] DONG Jian-xun, LIU Hai-xiao, LI Zhou. A bounding surface plasticity model of sand for cyclic loading analysis [J]. Rock and Soil Mechanics, 2019, 40(2): 684-692.
[9] GUO Wan-li, CAI Zheng-yin, WU Ying-li, HUANG Ying-hao. Study on the particle breakage energy and dilatancy of coarse-grained soils [J]. Rock and Soil Mechanics, 2019, 40(12): 4703-4710.
[10] GUO Ying, LIU Xiao-dong. Influence of sample-preparing methods on CD test results of saturated silty sand in different stress paths [J]. Rock and Soil Mechanics, 2019, 40(10): 3783-3788.
[11] WANG Jun, HU Hui-li, LIU Fei-yu, CAI Yuan-qiang, . Effects of direct shear characteristics of sand-geogrid interface under different aperture ratios [J]. Rock and Soil Mechanics, 2018, 39(S2): 115-122.
[12] WU Yong-sheng, TAN Zhong-sheng, YU Xian-bin, YU Yu, ZHU Yong,. Dilatancy behavior of phyllite in uniaxal compressive tests under different loading azimuths [J]. , 2018, 39(8): 2747-2754.
[13] ZHU Jun-gao, LU Yang-yang, JIANG Ming-jie, CHU Fu-yong，. Development and application of new apparatus for K0 test [J]. , 2018, 39(8): 3071-3076.
[14] ZHU Shun-ran, XU Chao, DING Jin-hua，. Laminated shear test of geotextile-sand interface [J]. , 2018, 39(5): 1775-1780.
[15] SUN Kai, CHEN Zheng-lin, LU De-chun，. An elastoplastic constitutive model incorporating cementation effect of stabilizer-treated soil [J]. , 2018, 39(5): 1589-1597.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] HUANG Jian-hua，SONG Er-xiang. Research on mechanical properties of frozen curtain in large anchorage foundation pit engineering[J]. , 2009, 30(11): 3372 -3378 .
[2] WANG Guan-shi, LI Chang-hong, CHEN Bao-jun, LI Sh-ihai. Propagation law of stress wave in nonlinear structural surface medium[J]. , 2009, 30(12): 3747 -3752 .
[3] WANG Zhao-yang, XU Qiang, NI Wan-kui. Study of undisturbed loess stress-strain relation during CT test[J]. , 2010, 31(2): 387 -391 .
[4] DENG Qin，GUO Ming-wei，LI Chun-guang，GE Xiu-run. Vector sum method for slope stability analysis based on boundary element method[J]. , 2010, 31(6): 1971 -1976 .
[5] WAN Shao-shi, NIAN Ting-kai, JIANG Jing-cai, LUAN Mao-tian. Discussion on several issues in slope stability analysis based on shear strength reduction finite element methods (SSR-FEM)[J]. , 2010, 31(7): 2283 -2288 .
[6] YAN Tie, LI Wei, BI Xue-liang. Research on effective stress model in porous media based on fractal method[J]. , 2010, 31(8): 2625 -2629 .
[7] LIU Jia, WANG Dong. Tension resistance and suction of plate anchor foundation in normally consolidated clay[J]. , 2009, 30(3): 735 -740 .
[8] ZHAO Shang-yi, ZHENG Ying-ren, LI An-hong, QIU Wen-ping, TANG Xiao-song. Application of multi-row embedded anti-slide piles to landslide of Wulong county government[J]. , 2009, 30(S1): 160 -164 .
[9] LIU Zhen-ping, HE Huai-jian, ZHU Fa-hua. Study of technology of fast 3D modeling and visualization based on borehole data[J]. , 2009, 30(S1): 260 -266 .
[10] WEI Hou-zhen, YAN Rong-tao, WEI Chang-fu, WU Er-lin, CHEN Pan, TIAN Hui-hui. Summary of researches for phase-equilibrium of natural gas hydrates in bearing sediments[J]. , 2011, 32(8): 2287 -2294 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd