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Volume 33 Issue 12
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SHI Wei-cheng, ZHU Jun-gao, ZHANG Bo, YU Ting. Strength characteristics of coarse-grained soil under plane strain condition[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1974-1979.
Citation: SHI Wei-cheng, ZHU Jun-gao, ZHANG Bo, YU Ting. Strength characteristics of coarse-grained soil under plane strain condition[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1974-1979.
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Strength characteristics of coarse-grained soil under plane strain condition

  • (1. School of Civil Engineering and Architecture, Changzhou Institute of Technology, Changzhou 213002, China ; 2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 3. Chengdu Hydroelectric Investigation and Design Institute, Chengdu 6 10072 , China)

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  • Received Date: January 06, 2012
  • Published Date: December 14, 2011
    Graphical Abstract
    • Abstract
  • Plane strain compression tests in which σ3 keeps invariable and experiments in which both σ3 and b[b=(σ2 -σ3)/(σ1 -σ3)] keep constant are performed on coarse-grained soil by means of the true triaxial apparatus recently developed in Hohai University. The characteristics of stress paths, parameter b at failure, angles of internal friction and peak values of stress ratio M fp [=( q/ p) fp ] of coarse-grained soil under plane strain conditions are studied. The experimental results show that the stress paths of the plane strain tests exist between the b-constant tests in which b equals 0 and 0.25; the parameter b at failure is between 0.15 and 0.2 for coarse-grained soil under plane strain conditions; the angles of internal friction of coarse-grained soil under plane strain conditions are 5%~7% larger than those under triaxial compression conditions while the peak values of stress ratio of coarse-grained soil under plane strain conditions are 13%~18% smaller than those under triaxial compression conditions. Finally a formula expressed as M fp =2.3sin φ tc , which is verified by the test results of coarse-grained soil, is proposed to calculate the peak value of stress ratio, M fp , under plane strain conditions from the angle of internal friction, φ tc , obtained from conventional triaxial compression tests.
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    • References (15)
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