Study on thaw settlement behavior of soft frozen soil
[1]Zhuang Huimin,Yang Ping,He Wenlong.Study on thaw settlement behavior of soft frozen soil[J].Journal of Zhengzhou University (Engineering Science),2016,37(02):62-66.[doi:10.3969/j.issn.1671-6833.201506022]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
37
Number of periods:
2016 02
Page number:
62-66
Column:
Public date:
2016-04-18
- Title:
- Study on thaw settlement behavior of soft frozen soil
- CLC:
- -
- Abstract:
- With the widespread application of artificial freezing method in subway construction, controlling post-construction thaw settlement has become a difficult problem to be solved for soft ground freezing. Taking the typical soft soil layer of Suzhou Metro as the research object, through laboratory experiments, it is concluded that under different water replenishment conditions The open thaw settlement coefficient of undisturbed soil is greater than that of closed thaw settlement coefficient; under unloading and pressure before melting, the thaw settlement coefficient decreases exponentially with the increase of upper load; The thaw-sedimentation coefficient becomes larger after soil remodeling, and the difference increases with the increase of the soil sensitivity; for unsaturated clay and muddy silty clay, there is a critical relationship between the thaw-sedimentation coefficient and dry density under open freeze-thaw conditions. The dry density corresponds to the minimum thaw settlement coefficient of the soil.
- References:
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