| 含盐冻结粉质粘土单轴抗压强度试验研究 |
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| 引用本文： | 杨成松,何平,程国栋,邴慧.含盐冻结粉质粘土单轴抗压强度试验研究[J].工程力学,2006,23(1):144-148. |
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| 作者姓名： | 杨成松 何平 程国栋 邴慧 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃,兰州,730000 |
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| 摘 要： | 通过对饱和含盐冻结粉质粘土单轴抗压强度试验,得到了试验条件下土体的单轴抗压强度与含盐量、负温的关系;讨论了应变速率一定,温度和含盐量变化时,含盐冻结粉质粘土的屈服应力和抗压强度间的关系;提出了相对温度这一新概念,并给出抗压强度与相对温度间的线性关系。相对温度的引入建立了盐渍土和非盐渍土力学性质的关系,从而可以用非盐渍土力学性质预测盐渍土的力学性质。
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| 关 键 词： | 盐渍土 抗压强度 粉质粘土 屈服应力 应变速率 |
| 文章编号： | 1000-4750（2006）01-0144-05 |
| 收稿时间： | 2003-12-19 |
| 修稿时间： | 2003-12-192004-05-22 |
UNIAXIAL COMPRESSIVE STRENGTH OF FROZEN SALINE SILTY CLAY |
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| YANG Cheng-song,HE Ping,CHENG Guo-dong,BING Hui.UNIAXIAL COMPRESSIVE STRENGTH OF FROZEN SALINE SILTY CLAY[J].Engineering Mechanics,2006,23(1):144-148. |
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| Authors: | YANG Cheng-song HE Ping CHENG Guo-dong BING Hui |
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| Affiliation: | State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China |
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| Abstract: | A series of uniaxial compressive strength tests were conducted on frozen saline silty clay.The test results show that: within the test range condition,the compressive strength decreases linearly with increasing salt content and descending test negative temperature.For a certain strain rate,the yielding strength is closely related to the compressive strength with the variation of temperature and salinity.The concept of relative temperature is proposed,and a linear relationship between the relative temperature and the compressive strength at different test temperature and salinity is presented.The relative temperature can be used to link the mechanical properties of non-saline soil with those of saline soil. |
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| Keywords: | saline soil compressive strength silty clay yielding strength strain rate |
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