| 振动频率对压实黄土动强度特性的影响 |
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| 引用本文： | 李焱,骆亚生,谭东岳,杨利国,付中原.振动频率对压实黄土动强度特性的影响[J].水土保持通报,2009,29(4):130-133. |
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| 作者姓名： | 李焱 骆亚生 谭东岳 杨利国 付中原 |
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| 作者单位： | 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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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划 |
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| 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ψd均随着频率的增大而升高;动强度参数中cd和ψd随振次的增加均呈减小并最终趋于稳定的趋势.
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| 关 键 词： | 压实黄土 振动频率 动强度 动强度参数 |
| 收稿时间： | 2008/12/22 0:00:00 |
| 修稿时间： | 3/1/2009 12:00:00 AM |
Effects of Vibration Frequency on Dynamic Strength Properties of Compacted Loess |
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| LI Yan,LUO Ya-sheng,TAN Dong-yue,YANG Li-guo and FU Zhong-yuan.Effects of Vibration Frequency on Dynamic Strength Properties of Compacted Loess[J].Bulletin of Soil and Water Conservation,2009,29(4):130-133. |
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| Authors: | LI Yan LUO Ya-sheng TAN Dong-yue YANG Li-guo and FU Zhong-yuan |
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| Institution: | College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China;College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China;College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China;College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China;College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| 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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| Keywords: | compacted loess frequency of vibration dynamic strength dynamic strength parameter |
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