| 土体的“锅盖效应” |
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| 引用本文： | 李强,姚仰平,韩黎明,胡晶,彭仁,王乃东. 土体的“锅盖效应”[J]. 工业建筑, 2014, 0(2) |
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| 作者姓名： | 李强 姚仰平 韩黎明 胡晶 彭仁 王乃东 |
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| 作者单位： | 中国民航机场建设集团公司;北京航空航天大学; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2014CB047000) |
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| 摘 要： | 通过对西部某机场道面产生不均匀沉陷问题的分析,发现机场建成后出现病害的原因之一是土的"锅盖效应"。在对土的"锅盖效应"形成机理分析的基础上,指出:即使在干旱低水位地区,"锅盖效应"也可引起地表隔气层下土体含水量升高,从而导致该类场地出现不均匀沉降和冻胀等灾害,这种地质现象应引起高度重视。
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| 关 键 词： | 非饱和土 锅盖效应 隔气层 冻胀 |
POT-COVER EFFECT OF SOIL |
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| Abstract: | Depending on the analysis of the differential settlement issue in an airport built in west China,it was found that pot-cover effect was one of the most important causes of damages in built airport. Based on the mechanism of potcover effect,it was pointed out that even in arid area with low underground water level,pot-cover effect could also increase the water content of the soil beneath the nonporous cladding,which would lead to differential settlement, frost heaving or other disasters in such field. So,much attention should be paid to thaw geological phenomenon. |
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| Keywords: | unsaturated soil pot-cover effect moisture barrier frost heaving |
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