水利水电科技进展2012，Vol.32Issue(5)：32-37,59,7.DOI:10.3880/j.issn.1006-7647.2012.05.008
大气作用下红黏土路基的湿热耦合数值分析
Numerical simulation of moisture-heat coupling of laterite soil subgrade under atmospheric effect
摘要
Abstract
With regard to the shallow landslide of slope of laterite soil subgrade easily induced by the coupling effect of climate and vehicle, the evolution rules of temperature and moisture fields of the subgrade of Chenzhou section in Hunan Province of Xiamen-Chengdu Expressway under environmental factors are stimulated based on the observed atmospheric data in Chenzhou area by means of the Philip & de Vries moisture-heat coupling model and multi-field coupling software. The calculated results indicate that the annual mean depth influenced by the temperature is about 3 m and the daily mean one is about 0. 5 rn. The moisture of subgrade slope is partially influenced by rainfall and evaporation, and that of roadbed bottom is controlled by the capillary rise of groundwater. The internal moisture of the subgrade is influenced by the coupling effect of temperature and humidity.关键词
红黏土/路基/湿热耦合/大气作用Key words
laterite soil/ subgrade/ moisture-heat coupling/ atmospheric effect分类
建筑与水利引用本文复制引用
谈云志,郑爱,吴翩,王南京,丁品良..大气作用下红黏土路基的湿热耦合数值分析[J].水利水电科技进展,2012,32(5):32-37,59,7.基金项目
国家自然科学基金(51009084) （51009084）
三峡大学青年科学基金(KJ2009A001) （KJ2009A001）
