| 保温材料在青藏铁路路基工程中应用的数值分析 |
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| 引用本文： | 温智,盛煜,马巍,齐吉琳,吴基春.保温材料在青藏铁路路基工程中应用的数值分析[J].冰川冻土,2004,26(Z1):83-89. |
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| 作者姓名： | 温智 盛煜 马巍 齐吉琳 吴基春 |
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| 作者单位： | State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000,China |
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| 基金项目： | 中国科学院知识创新工程项目
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国家自然科学基金
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the National Key Basic Research and Development Foundation of Ministry of Sciences and Technology of China |
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| 摘 要： | In many cases, preventing permafrost from further thaw due to human activities might be the first choice for embankment design in permafrost regions. 2-D finite element analysis was conducted in this paper, in which phase change was taken into consideration to simulate the thermal regime of the Qinghai-Tibetan Railway with Expandable Polystyrene (EPS). Based on the predicted maximum thaw depth in the following 50 year, the best position for insulation was presented and the relationship between the thickness of insulation and the height of embankment was analyzed. Besides, the applicable range of insulation in embankment engineering of the Qinghai-Tibetan Railway in terms of Mean Annual Air Temperature (MAAT) was suggested and the influence of geothermal field of permafrost on the applicable range of the insulation was discussed.
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| 关 键 词： | permafrost insulation Qinghai-Tibetan Railway numerical studies 保温材料 青藏铁路 路基工程 应用 数值分析 Railway Embankment Application Insulation Studies influence geothermal field range engineering Mean Annual Air Temperature best position relationship thickness insulation |
Numerical Studies for Insulation Application to Embankment of Qinghai-Tibetan Railway |
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| WEN Zhi,SHENG Yu,MA Wei,QI Ji-lin,WU Ji-chun.Numerical Studies for Insulation Application to Embankment of Qinghai-Tibetan Railway[J].Journal of Glaciology and Geocryology,2004,26(Z1):83-89. |
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| Authors: | WEN Zhi SHENG Yu MA Wei QI Ji-lin WU Ji-chun |
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| Abstract: | In many cases, preventing permafrost from further thaw due to human activities might be the first choice for embankment design in permafrost regions. 2-D finite element analysis was conducted in this paper, in which phase change was taken into consideration to simulate the thermal regime of the Qinghai-Tibetan Railway with Expandable Polystyrene (EPS). Based on the predicted maximum thaw depth in the following 50 year, the best position for insulation was presented and the relationship between the thickness of insulation and the height of embankment was analyzed. Besides, the applicable range of insulation in embankment engineering of the Qinghai-Tibetan Railway in terms of Mean Annual Air Temperature (MAAT) was suggested and the influence of geothermal field of permafrost on the applicable range of the insulation was discussed. |
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| Keywords: | permafrost insulation Qinghai-Tibetan Railway numerical studies |
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