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Volume 35 Issue 8
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JIAO Gui-de, ZHAO Shu-ping, MA Wei, LUO Fei, KONG Xiang-bing. Deformation and strength of warm frozen soils under cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(8): 1553-1558.
Citation: JIAO Gui-de, ZHAO Shu-ping, MA Wei, LUO Fei, KONG Xiang-bing. Deformation and strength of warm frozen soils under cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(8): 1553-1558.
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Deformation and strength of warm frozen soils under cyclic loading

  • 1. State Key Laboratory of Frozen Soil Engineering，Cold and Arid Regions Environmental and Engineering Research Institute，Chinese Academy of Sciences, Lanzhou 730000, China; 2. Key Laboratory of Mechanics on Disaster and Environment in Western China Attached to the Ministry of Education of China, Lanzhou University, Lanzhou 730000, China; 3. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China

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  • Received Date: October 14, 2012
  • Published Date: August 19, 2013
    Graphical Abstract
    • Abstract
  • The uniaxial compression tests on frozen soils under -1℃ and cyclic loading are carried out. The vibration frequencies are 3, 5 and 8 Hz. The cumulative deformation and dynamic strength of the frozen soils under cyclic loading are studied. The results show that the cumulative deformation of the frozen soils under cyclic loading is dependent on the maximum cyclic stress. When the frequency is the same, the larger the maximum cyclic stress, the larger the cumulative strain. According to the maximum cyclic stress, the changing curves of the cumulative strain with cyclic number can be divided into failure type, stable type and transition type. The loading frequency affects the cumulative strain in a complex way. When the maximum cyclic stress is small, the frequency has slight effect on the cumulative strain. When the maximum cyclic stress is moderate, on the whole, the higher the frequency, the greater the cumulative strain. When the maximum cyclic stress is large, the higher the frequency, the smaller the cumulative strain. When the failure strains are 3%, 5% and 10%, the dynamic strength is the greatest under loading frequency of 8 Hz, and the dynamic strength under 3 Hz is close to that under 5 Hz.
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