›› 2012, Vol. 33 ›› Issue (7): 1993-1999.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Test study of loess structure based on static strength conditions

TIAN Kan-liang1, 2, ZHANG Hui-li3, MA Jun4   

  1. 1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China; 2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; 3. College of Water Conservancy and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China; 4. West to East Gas Pipeline Corporation of CNPC, Shanghai 200122, China
  • Received:2011-04-12 Online:2012-07-11 Published:2012-07-13

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Abstract: Soil structure is the intrinsic determinants of its strength and deformation. Loess structure is determined by the link structural strength and the friction structural strength. Based on this, some new and reasonable structural parameters of loess are suggested based on soil static strength, such as the link structural static strength potential parameters , the friction structural static strength potential parameters and the structural static strength potential parameters . The variation of the structure and the structural parameters based on the static strength conditions are studied with the triaxial compression tests of intact loess and artificial cement structural loess; and the impacts of moisture content, confining pressure and axial deformation on the structure of intact loess and artificial cement structural loess are revealed. The results show that the water content of loess is smaller; its structure is stronger; and the greater loss of soil mass strength will occur after the structural damage. Loess structure damage mainly occurs in the small strain stage. Finally, the rationality of these structural parameters based on the static strength conditions are discussed.

Key words: loess, structure, link structural static strength potential parameters, friction structural static strength potential parameters, structural static strength potential parameters, test study

CLC Number: 

  • TU 411
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