• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 26 Issue 4
Aug.  2013
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Article Contents
ZHANG Chonglei, JIANG Guanlu, WANG Zhimeng, LI Anhong. Experimental Investigation on Deformation Parameters of Silty Clay Based on Local Deformation Measurement[J]. Journal of Southwest Jiaotong University, 2013, 26(4): 651-658. doi: 10.3969/j.issn.0258-2724.2013.04.010
Citation: ZHANG Chonglei, JIANG Guanlu, WANG Zhimeng, LI Anhong. Experimental Investigation on Deformation Parameters of Silty Clay Based on Local Deformation Measurement[J]. Journal of Southwest Jiaotong University, 2013, 26(4): 651-658. doi: 10.3969/j.issn.0258-2724.2013.04.010

Experimental Investigation on Deformation Parameters of Silty Clay Based on Local Deformation Measurement

doi: 10.3969/j.issn.0258-2724.2013.04.010
  • Received Date: 08 Nov 2012
  • Publish Date: 25 Aug 2013
  • In order to investigate the influence of deformation measurement methods on the deformation parameters of undisturbed silty clay, triaxial consolidated-drained shear tests equipped with local deformation measurement transducers were carried out to analyze the behaviors of strain-stress, shear strength parameters and the characteristics of Poisson's ratio and stiffness under small strain. The results show that the effective internal friction angle by using the local deformation measurement, compared with by using the full deformation measurement, decreases about 4.5% to 6.0%, while the effective cohesion increases about 5.7% to 14.0%. The volumetric strains obtained by different measurements are similar before the contraction peak value, after that, the volumetric strain gained by the local deformation measurement is the biggest, followed by the ones via the full deformation measurement and the water measurement. The stiffness gained by the local deformation measurement is twice larger than that based on the full deformation measurement under small strain. When axial strain is smaller than 0.2%, Poisson's ratio increases rapidly with the increase of axial strain in the initial stage, then slows down and becomes stable gradually.

     

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