| 人工二次冻融土热力学参数试验 |
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| 引用本文： | 刘瑞锋,胡向东,皮爱如.人工二次冻融土热力学参数试验[J].煤炭学报,2008,33(5):518-521. |
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| 作者姓名： | 刘瑞锋 胡向东 皮爱如 |
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| 作者单位： | 1同济大学 地下建筑与工程系，上海，200092
2同济大学 岩土及地下工程教育部重点实验室，上海，200092 |
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| 摘 要： | 通过对上海软土某工程3种不同的土样进行不同状态下（原状土、一次冻融土、二次冻融土）进行土工力学及人工冻土试验和结果分析，得到土体在二次冻融循环作用下主要热力学参数的变化规律：与一次冻结相比，二次冻结时土的冻结温度、导热系数、冻胀力和冻胀率略有降低，而融沉率则变大.
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| 关 键 词： | 二次冻融 冻土 热力学参数 |
| 文章编号： | 0253-9993(2008)05-0518-04 |
| 修稿时间： | 2007年10月26 |
Experiment on thermodynamic parameters of soils under secondary freeze-thaw action |
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| LIU Rui-feng,HU Xiang-dong,PI Ai-ru.Experiment on thermodynamic parameters of soils under secondary freeze-thaw action[J].Journal of China Coal Society,2008,33(5):518-521. |
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| Authors: | LIU Rui-feng HU Xiang-dong PI Ai-ru |
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| Abstract: | The characteristics of three kinds of soils from one Shanghai soft soil project in different state(original state,freeze-thaw state,secondary freeze-thaw) were tested in laboratory,and the results were analyzed. The change rules of soil thermodynamic characteristics were found: compared with first freezing,freezing point,thermal conductivity,heat capacity,frost heave force and frost heave factor all decrease,whereas thaw settlement increases under secondary freeze-thaw action. |
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| Keywords: | secondary freeze-thaw frozen soil thermodynamic parameter |
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