| 兰新铁路路基温度场和水分场耦合数值分析 |
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| 引用本文： | 李育宏,高以健,马红绛,赵成江. 兰新铁路路基温度场和水分场耦合数值分析[J]. 兰州交通大学学报, 2011, 0(3) |
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| 作者姓名： | 李育宏 高以健 马红绛 赵成江 |
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| 作者单位： | 兰州铁路局;兰州交通大学土木工程学院;中铁西北科学研究院有限公司; |
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| 摘 要： | 主要分析了兰新铁路冻害机理,阐述了铁路冻害主要影响因素是土质、水分和温度.考虑温度变化对水分迁移机理的作用,通过Geostudio软件建立温度场和水分场耦合模型,对兰新铁路路基进行水热耦合模拟和数值分析,得出一个冻融循环周期内冻土路基温度场和水分场的分布解.通过计算与实测数据可以得出在温度梯度条件下,水分发生了重分布现象,且是造成路基冻害的主要原因.同时结合兰新铁路的实际情况,提出了阻止水分迁移是解决路基冻胀的主要措施.
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| 关 键 词： | 冻害 温度 水分 耦合 路基 |
Coupling Numerical Analysis of Temperature and Moisture Field for Lanzhou-Xinjiang Railway |
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| LI Yu-hong,GAO Yi-jian,MA Hong-jiang,ZHAO Cheng-jiang. Coupling Numerical Analysis of Temperature and Moisture Field for Lanzhou-Xinjiang Railway[J]. Journal of Lanzhou Jiaotong University, 2011, 0(3) |
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| Authors: | LI Yu-hong GAO Yi-jian MA Hong-jiang ZHAO Cheng-jiang |
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| Affiliation: | LI Yu-hong1,GAO Yi-jian1,MA Hong-jiang2,ZHAO Cheng-jiang3(1.Lanzhou Railway Bureau,Lanzhou 730000,China,2.School of civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,3.China Railway Northwest Science Research Institute Co.,LTD,China) |
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| Abstract: | The mechanism of freeze injury of Lanxin Railway is analyzed and the main influence factors of soil,water and temperature are expounded.According to the influence of temperature change on the water migration,the coupling model of the temperature and moisture field is established based on Geostudio software.The hydrothermal coupling of the embankment of Lanxin Railway is simulated and analyzed,and the distribution solution of temperature and moisture field of freeze embankment in a freeze-thaw cycle is obtai... |
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| Keywords: | freeze injury temperature water couple embankment |
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