›› 2005, Vol. 26 ›› Issue (4): 572-576.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on residual strain of frozen soil and CT analysis under cyclic loading of variable amplitudes

XU Chun-hua1, XU Xue-yan1,2 , SHEN Xiao-dong1   

  1. 1. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 2.State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou 730000, China
  • Received:2003-12-12 Online:2005-04-09 Published:2013-12-19

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Abstract: By means of the experimental data from dynamic triaxial stress-strain test of variable cyclic amplitude for frozen soil, the formative conditions of residual strain on frozen silt clay are studied. It is concluded that the residual strain of frozen soil decreases as the temperature falls, increases with the vibratory times at the same temperature level; and the change of water content has a little effect on it, through the relationships of residual strain versus temperature, vibratory time and water content. The variation laws of structural hair cracking and the characteristics of density for frozen soils are analyzed quantitatively based on the CT scanning results of frozen silt clay before and after dynamic triaxial test. And the formation mechanism of seismic-thaw-settlement of frozen soils is interpreted.

Key words: frozen soil, formation conditions of residual strain, structural hair cracking, seismic thaw settlement

CLC Number: 

  • TU 43
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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