| 固结过程对冻土应力-应变特性的影响 |
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| 引用本文： | 马巍,吴紫汪,常小晓. 固结过程对冻土应力-应变特性的影响[J]. 岩土力学, 2000, 21(3): 198-200 |
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| 作者姓名： | 马巍 吴紫汪 常小晓 |
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| 作者单位： | 中科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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| 基金项目： | 国家自然科学基金(49771024)及中科院“九五”重点项目(KZ952-J1-216)。 |
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| 摘 要： | 选用四种不同固结方式，并在－５０℃条件下，对冻结砂土样进行三轴压缩试验，试验发现固结过程对冻土的强度与变表有明显影响。经历Ｋ０ＤＣＦ的冻土其强度最大，友坏变形最小，经历ＦＣ的试样强度最小，破坏变形最大；经历ＥＤＣＦ和ＥＵＤＣＦ的产介于中间。
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| 关 键 词： | 固结过程 冻土 应力－应变特性 |
| 文章编号： | 1000-7598-(2000)03-0198-04 |
| 收稿时间： | 1999-09-05 |
Effects of consolidation process on stress-strain characters of tjaeles |
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| BHDWG,WKW]MA Wei,WU Zi wang,CHANG Xiao xiao. Effects of consolidation process on stress-strain characters of tjaeles[J]. Rock and Soil Mechanics, 2000, 21(3): 198-200 |
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| Authors: | BHDWG WKW]MA Wei WU Zi wang CHANG Xiao xiao |
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| Affiliation: | State Key Laboratory of Frozen Soil Engineering , CAREERI , CAS, Lanzhou 730000 , China |
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| Abstract: | Through triaxial compressive tests of frozen sandy soils under 4 kinds of different consolidating processes (-5 ℃), it is found that the consolidating process strongly affects the strength and deformation of frozen soils. The frozen soil that is subject to K0 DCF( drainage consolidating and then freezing)has the greatest ultimate strength and the lowest failure strain, on the contrary the frozen soil that is subject to FC ( first freezing and then consolidating)has the lowest ultimate strength and the greatest failure strain . For the frozen soil of undergoing the isobaric pressure drainage consolidating and then freezing ( EDCF) and the isobaric pressure undrainage consolidating and then freezing ( EU CDF), their ultimate strength and failure strain are between those of K0 DCF and FC. |
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| Keywords: | consolidating process frozen soil stress strain behaviour |
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