| 饱和冻结粉土在常应变速率下的单轴抗压强度 |
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| 引用本文： | 李海鹏,朱元林,潘卫东.饱和冻结粉土在常应变速率下的单轴抗压强度[J].冰川冻土,2002,24(5):659-664. |
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| 作者姓名： | 李海鹏 朱元林 潘卫东 |
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| 作者单位： | State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China,Lanzhou University, Lanzhou Gansu 730000, China |
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| 基金项目： | 国家自然科学基金;40171021; |
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| 摘 要： | Uniaxial compressive strength tests were conducted on the saturated frozen Lanzhou silt (loess) at various constant strain rates and at various constant temperatures. It is concluded from the test results that: the compressive strength (σ f) is very sensitive to temperature (θ) and increases with the temperature decreasing as a power law. Compressive strength is sensitive to strain rate () and increases with strain rates increasing within a certain range of strain rates as a power law. Compressive strength decreases when time to failure (tf) increases, also following a power law. Finally, Compressive strength of frozen silt with higher dry density (γd) is higher than that of frozen silt with lower dry density. The difference between them is mainly influenced by strain rate.
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| 关 键 词： | the saturated frozen silt compressive strength constant strain rate |
Uniaxial Compressive Strength of the Saturated Frozen Silt at Constant Strain Rates |
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| LI Hai\|peng ,\ ZHU Yuan\|lin ,\ PAN Wei\|dong.Uniaxial Compressive Strength of the Saturated Frozen Silt at Constant Strain Rates[J].Journal of Glaciology and Geocryology,2002,24(5):659-664. |
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| Authors: | LI Hai\|peng \ ZHU Yuan\|lin \ PAN Wei\|dong |
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| Institution: | 1. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China;2. Lanzhou University, Lanzhou Gansu 730000, China |
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| Abstract: | Uniaxial compressive strength tests were conducted on the saturated frozen Lanzhou silt (loess) at various constant strain rates and at various constant temperatures. It is concluded from the test results that: the compressive strength (σ f) is very sensitive to temperature (θ) and increases with the temperature decreasing as a power law. Compressive strength is sensitive to strain rate () and increases with strain rates increasing within a certain range of strain rates as a power law. Compressive strength decreases when time to failure (tf) increases, also following a power law. Finally, Compressive strength of frozen silt with higher dry density (γd) is higher than that of frozen silt with lower dry density. The difference between them is mainly influenced by strain rate. |
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| Keywords: | the saturated frozen silt compressive strength constant strain rate |
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