| 福建省典型花岗岩残积土路堤温度场特征研究 |
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| 引用本文： | 姚晓琴,陈祖鑫.福建省典型花岗岩残积土路堤温度场特征研究[J].福建工程学院学报,2012,10(6):559-566. |
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| 作者姓名： | 姚晓琴 陈祖鑫 |
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| 作者单位： | 1. 福州大学阳光学院,福建福州,350015
2. 福建省交通规划设计院,福建福州,350001 |
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| 摘 要： | 采用有限差分法对福建典型花岗岩残积土路堤温度场进行模拟研究。结果表明:路堤浅层温度呈现日周期变化,且滞后于气温,温度最值随深度呈滞后性;福建省四季典型路堤的平均温度分别为33.5℃、44℃、23.5℃、12.5℃,夏季在路堤浅层范围内产生的温度梯度最大,应考虑温度梯度对湿度迁移的影响;压实度越大,温度变化的速率越大;热导率越大,传递速度越快;体积比热容越大,温度变化越慢。
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| 关 键 词： | 花岗岩残积土 温度场 温度季节性变化 有限差分 |
The temperature field of the typical granite residual soil embankment in Fujian province |
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| Yao Xiaoqin
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Chen Zuxin.The temperature field of the typical granite residual soil embankment in Fujian province[J].Journal of Fujian University of Technology,2012,10(6):559-566. |
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| Authors: | Yao Xiaoqin Chen Zuxin |
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| Institution: | 1. College of Sunshine, Fuzhou University, Fuzhou 350015, China; (2. Fujian Communications Planning and Design Institute, Fuzhou 350001, China) |
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| Abstract: | To describe the temperature field of the typical granite residual soil embankment in Fujian province, a series of numerical simulations were performed based on the finite difference method. The temperature of the shallow embankment changes in the daily cycle, which is slower than the air temperature. The peak value differs with the depth of the embankment. The average four season temperatures are 33.5 ℃, 44 ℃, 23.5 ℃ and 12.5 ℃. The temperature gradient reaches the high- est in the summer, which affects the migration of humidity. The higher the degree of compaction is, the greater the temperature changes. The greater the thermal conductivity is, the higher the trans- mission speed. The greater the volume of the heat capacity is, the slower the temperature changes |
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| Keywords: | granite residual soil temperature field temperature seasonal variation finite difference |
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