| 基于路基湿度预估的综合湿度指数 |
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| 引用本文： | 李聪,凌建明,官盛飞.基于路基湿度预估的综合湿度指数[J].同济大学学报(自然科学版),2012,40(11):1672-1676. |
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| 作者姓名： | 李聪 凌建明 官盛飞 |
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| 作者单位： | 1. 同济大学道路与交通工程教育部重点实验室,上海201804;招商局重庆交通科研设计院有限公司,重庆400067
2. 同济大学道路与交通工程教育部重点实验室,上海,201804 |
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| 基金项目： | 交通部西部交通建设科技资助项目（2008 318 223 12） |
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| 摘 要： | 不同土组的路基湿度对路基路面结构工作性状与使用寿命均有显著影响,合理选取表征指标是路基湿度预估的关键.将路基湿度影响因素归并为气候与地下水位,引入气候因素表征指标——综合湿度指数,给出综合湿度指数定义,其计算分为潜在蒸发蒸腾总量计算、湿度平衡计算、年度湿度指数值计算,并给出具体算例.对计算得到的全国400个气象站点综合湿度指数值按照公路自然区划进行归并,认为所提出的综合湿度指数可作为公路自然区域划分的新指标.
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| 关 键 词： | 路基湿度 气候因素 综合湿度指数 潜在蒸发蒸腾总量 湿度平衡 气候分区 |
| 收稿时间： | 8/5/2011 6:56:50 PM |
| 修稿时间： | 9/17/2012 4:50:24 PM |
Prediction based Subgrade Moisture Thornthwaite Moisture Index |
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| LI Cong,LING Jianming and GUAN Shengfei.Prediction based Subgrade Moisture Thornthwaite Moisture Index[J].Journal of Tongji University(Natural Science),2012,40(11):1672-1676. |
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| Authors: | LI Cong LING Jianming and GUAN Shengfei |
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| Institution: | Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China;Chongqing Communications Research and Design Institute, Chongqing 400067, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China |
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| Abstract: | Subgrade moisture has critical effect on performance of pavement structure and life of highway. Selection of indexes appropriately suggests influence factors are important for prediction of moisture. First, the factors of subgrade moisture were merged into climate condition and groundwater. Furthermore, thornthwaite moisture index(TMI), which comprehensively reflects influence of climate and latitude was introduced. Then, the calculation process of TMI was divided into three steps including calculation of potential evapotranspiration, moisture balance and calculating annual value of TMI. Moreover, example was presented to validate calculation procedure of TMI. Finally, values of TMI calculated on the basis of the meteorological data collected from 400 weather stations of China were tabled according to climatic zoning of highway. The results show that TMI can be used as new criterion to classify climatic zoning for highway. |
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| Keywords: | moisture of subgrade climate factor thornthwaite moisture index (TMI) potential evapotranspiration moisture balance climatic zoning |
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