| 季节性冰冻地区路基温度场分布规律 |
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| 引用本文： | 谭忆秋,徐慧宁,周纯秀,张魁,陈凤晨. 季节性冰冻地区路基温度场分布规律[J]. 哈尔滨工业大学学报, 2011, 43(8): 98-102 |
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| 作者姓名： | 谭忆秋 徐慧宁 周纯秀 张魁 陈凤晨 |
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| 作者单位： | 哈尔滨工业大学,哈尔滨工业大学 |
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| 基金项目： | 国家基础研究重大项目基金 |
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| 摘 要： | 为准确掌握路基结构温度场的分布特点和变化规律,以季节性冰冻地区典型道路结构路基温度场一年多的跟踪观测数据为基础,开展了季节性冰冻地区路基温度场分布规律的研究,并利用统计回归方法建立了观测点所在区域路基温度场的预估模型.研究显示：路基温度场分布特性以年为周期呈余弦规律变化,不同深度路基的温度变化存在滞后性;热量在路基结构...
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| 关 键 词： | 季节性冰冻地区 路基 温度场 分布规律 预估模型 |
| 收稿时间： | 2010-02-28 |
Temperature distribution characteristic of subgrade in seasonally frozen regions |
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| TAN Yi-qiu,XU Hui-ning,ZHOU Chun-xiu,ZHANG Kui and CHEN Feng-chen. Temperature distribution characteristic of subgrade in seasonally frozen regions[J]. Journal of Harbin Institute of Technology, 2011, 43(8): 98-102 |
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| Authors: | TAN Yi-qiu XU Hui-ning ZHOU Chun-xiu ZHANG Kui CHEN Feng-chen |
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| Affiliation: | Harbin institute of technology,Harbin institute of technology |
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| Abstract: | Based on the field data collected from a medium-scale experimental pavement system, temperature distribution characteristic of subgrade in seasonally frozen regions was studied in detail, and the prediction model for subgrade temperature distribution was proposed with regression analysis. Test data illustrated that: (1) The temperature of subgrade changed with time, and it followed cosine distribution. (2) Energy was stored with the heat transfer in subgrade, and it transferred nonlinear with depth. (3)The temperature gradient of subgrade changed with time, and it followed cosine distribution. Based on the collected data, the prediction model for subgrade temperature distribution in this area was proposed. The comparison between measured and predicted temperatures indicated that this model had good applicability and accuracy for this area. |
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| Keywords: | Seasonally frozen regions Subgrade Temperature field Distribution characteristic Prediction model |
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