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浙江大学学报(工学版)
浙江大学学报(工学版)
土木与交通工程     
温度作用下机场跑道土基中水气运移规律分析
张如如,赵云,徐文杰,黄博,凌道盛,韩黎明
1. 浙江大学 软弱土与环境土工教育部重点实验室,浙江 杭州 310058;
2. 浙江大学 岩土工程研究所,浙江 杭州 310058;3. 中国民航机场建设集团公司,北京 100101
Water gas migration analysis in runway subgrade soil under influence of temperature
ZHANG Ru ru, ZHAO Yun, XU Wen jie,HUANG Bo,LING Dao sheng,HAN Li ming
1.MOE Key Laboratory of Soft soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China;
2. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
3. China Airport Construction Group Corporation,Beijing 100101,China
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摘要：

针对机场道面“锅盖效应”现象,建立考虑水汽相变的一维有限元模型,通过数值方法模拟道面结构阻滞和环境温度共同作用下土基中的水分运移过程,分析季节性温度变化、初始温度、初始饱和度和道面结构等因素的影响.结果表明,温度降低会引起土基表层水分“富集”,主要影响深度为1 m,土体初始温度和初始饱和度越高,水分“富集”越明显；季节性温度变化对砂土含水量影响很小,黏土次之,粉质黏土最大,饱和度改变量可达6%左右；道面结构的存在对土基表层含水量影响十分显著,现场检测结果与分析结果规律较一致.
Abstract:

A simplified onedimensional finite model was developed to study the “potcover” phenomenon in airport runways taking watervapor phase change into consideration. Moisture movement process in subgrade soils was numerically simulated under the influence of pavement structures blocking effect and environmental temperature.  The influence of seasonal temperature change, initial temperature, initial saturation and pavements blocking effect were analyzed. Results showed that water content in subgrade surface enriched with the decrease of temperature. The main influence depth was 1 m. The water enrichment phenomenon was enhanced with the rising of initial saturation and temperature. Seasonal temperature change affected silty clay the most, maximum saturation change of which could reach nearly 6%, the second for clay, while water content in sand is relatively less affected. The existence of pavement structure has  significant influence on moisture distribution. The analysis results accorded with insitu test results．
出版日期: 2017-01-14
:     
基金资助:

国家“973”重点基础研究发展计划项目(2014CB047005).
通讯作者: 徐文杰，男，博士.ORCID：0000000217168251.     E-mail: wenjiexu84@gmail.com
作者简介: 张如如(1991-)，男，硕士生，从事非饱和土方面等研究.ORCID：0000000268542872.E-mail: zhangruru111@126.com
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引用本文:

张如如,赵云,徐文杰,黄博,凌道盛,韩黎明. 温度作用下机场跑道土基中水气运移规律分析[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008973X.2016.05.003.

ZHANG Ru ru, ZHAO Yun, XU Wen jie,HUANG Bo,LING Dao sheng,HAN Li ming. Water gas migration analysis in runway subgrade soil under influence of temperature. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008973X.2016.05.003.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008973X.2016.05.003    或    http://www.zjujournals.com/eng/CN/Y2016/V50/I5/822

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