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| DYNAMIC TEST STUDY OF LOESS STRUCTURAL PROPERTY BASED ON STRENGTH CONDITIONS |
(1. Institute of Soil and Water Conservation，Northwest A and 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 and F University，Yangling，Shaanxi 712100，China) |
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Abstract Soil structure is the intrinsic determinant of its strength and deformation. The structural property of loess is determined by the link structural strength and the friction structural strength. On this basis，some new and reasonable structural parameters of loess are suggested based on soil dynamic strength，such as the link structural dynamic strength potential parameter mgd1，the friction structural dynamic strength potential parameter mgd2 and the structural dynamic strength potential parameter mgd. The variation laws of structural property and the structural parameters based on the dynamic strength conditions are studied with the dynamic torsional shear test of intact loess；and the impact of moisture content，consolidation pressure and dynamic shear strain on the structural property of loess are revealed. Finally，the rationality of these structural parameters based on the dynamic strength conditions is discussed.
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Received: 26 April 2010
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2010, Vol. 29 
