Journal of Jilin University(Earth Science Edition) ›› 2016, Vol. 46 ›› Issue (5): 1475-1481.doi: 10.13278/j.cnki.jjuese.201605203

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Shear Strength of Silty Clay in Dalian by Ring Shear Tests

Hong Yong1, Yue Yuqiu1, Zheng Xiaoyu2, Che Xiaowen1, Liu Peng1   

  1. 1. Civil Engineering College, Qingdao University of Technology, Qingdao 266033, Shandong, China;
    2. Construction Engineering College of Jilin University, Changchun 130026, China
  • Received:2016-03-20 Online:2016-09-26 Published:2016-09-26
  • Supported by:

    Supported by National Natural Science Foundation of China (41272341; 41572259), Science and Technology Project in Colleges and Universities of Shandong Province (J12LG08)and Opening Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology (SKLGP2012K013)

Abstract:

The change of the shear mechanics properties of typical silty clay in Dalian Binhai area was tested at different normal stresses and shear rates by ring shear apparatus.Test results indicate that: 1) strain-softening phenomenon of silty clay was observed in normal consolidation state. It was shown that strain softening feature is mainly related to the mass fraction and directionality of clay mineral in the soil in the process of shearing.2)At the same shear rate, the peak strength and residual strength increase with the increase of normal stresses, and showed a good linear relationship between normal stress and peak intensity.3)Due to internal cohesive force of soil changes in the process of peak intensity, the peak intensity increases with the increase of shear rate;the residual strength and shear rate have certain correlation, which has a relationship with shear zone (surface) of clay grain orientation arrangement at different levels under different shear rates.

Key words: silty clay, ring shear test, strain softening, peak strength, residual strength, shear displacement

CLC Number: 

  • P642.114

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