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

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Effects of Vibration Frequency on Dynamic Strength Properties of Compacted Loess

- Effects of Vibration Frequency on Dynamic Strength Properties of Compacted Loess
- Bulletin of Soiland Water Conservation Vol. 28, Issue 4, Pages: 130-133(2009)
- 作者机构：
  
  西北农林科技大学水利与建筑工程学院, 陕西杨凌,712100
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- Published：2009
- 稿件说明：
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LI Yan, LUO Ya-sheng, TAN Dong-yue, et al. Effects of Vibration Frequency on Dynamic Strength Properties of Compacted Loess[J]. Bulletin of Soiland Water Conservation, 2009, 28(4): 130-133.
DOI：

LI Yan, LUO Ya-sheng, TAN Dong-yue, et al. Effects of Vibration Frequency on Dynamic Strength Properties of Compacted Loess[J]. Bulletin of Soiland Water Conservation, 2009, 28(4): 130-133. DOI：

摘要

利用动扭剪三轴仪对压实黄土进行了不同振动频率下的试验研究，分析了振动频率f对压实黄土的动强度和动强度参数的影响规律。研究表明，在一定围压下，压实黄土动强度均随振动频率f的升高而增大，与振动频率呈正相关关系;在试样振动频率确定的情况下，压实黄土的动强度随围压的增加而增大；压实黄土的动黏聚力cd和动内摩擦角φd均随着频率的增大而升高；动强度参数中cd和φd随振次的增加均呈减小并最终趋于稳定的趋势。

Abstract

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 increased with the rise of the frequency

showing a poses tive relation with frequency.(2) At a certain defined frequency

dynamic strength of compacted loess 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 steadv with the increased vibration.

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