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《Bulletin of Soil and Water Conservation》 2009-04
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Effects of Vibration Frequency on Dynamic Strength Properties of Compacted Loess

LI Yan, LUO Ya-sheng, TAN Dong-yue, YANG Li-guo, FU Zhong-yuan(College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China)  
Shear failure of compacted loess in different frequencies is studied using a torsion shear apparatus and the effects of frequency on dynamic strength and dynamic strength parameter are investigated. (1) At a certain defined confining pressure, dynamic strength of compacted loess is increased with the rise of the frequency, showing a positive relation with frequency. (2) At a certain defined frequency, dynamic strength of compacted loess is increased with the rise of confining pressure. (3) Both dynamic cohesion and internal fraction angle of compacted loess are increased with the rise of frequency. (4) The dynamic cohesion and the internal fraction angle are decreased and tend to be steady with the increased vibration.
【Fund】: 国家自然科学基金资助项目(50578134);; 教育部新世纪优秀人才支持计划(NECT-06-0864)
【CateGory Index】: TU411.8
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