摘要
为了研究温度和水分对高寒阴湿地区道路翻浆的影响,通过有限元软件Geostudio提出水热耦合计算模型,并将分析结果与现场实测值进行对比。结果表明:水热耦合作用、水分场和温度场是造成该地区道路翻浆的主要因素;水热耦合作用下,检测地区最大冻结深度达1.8m,水分向上迁移,形成水分重分布,路基冻害加深;融化期路面下0.8~1.2m处最大含水率达到40%,从上到下含水率呈现先增大后减小的趋势。
In order to study the influence of temperature and moisture on road boiling in alpine and damp area, the hydro-thermal coupling calculation model was proposed by finite element software Geostudio, and the analysis results were compared with the field measurement values. The results show that the hydro-thermal coupling, water field and temperature field are the main factors causing road boiling in this area.The maximum frozen depth of the tested area reaches 1.8 m under the hydro-thermal coupling.With upward migrating of the water, water redistribution is formed and the subgrade freezing damage deepens;during the thaw period, the maximum moisture content reaches 40% at 0.8-1.2 m under the pavement, and the moisture content increases first and then decreases from top to bottom.
作者
万瑞霞
瞿明
张伟
王成
WAN Rui-xia;QU Ming;ZHANG Wei;WANG Cheng(Department of Hydropower Engineering, Lanzhou Resources &Environment Voc-Tech College, Lanzhou 730021,Gansu, China;Third Company of Gansu Road & Bridge ConstructionGroup, Lanzhou 730030, Gansu, China;School of Water Resources and Architectural Engineering, TarimUniversity, Alear 843300, Xinjiang, China)
出处
《筑路机械与施工机械化》
2019年第5期47-50,共4页
Road Machinery & Construction Mechanization
基金
国家自然科学基金项目(51508425)
中央高校基本科研业务费用专项基金项目(2042016kf1125)
兰州资源环境职业技术学院土木工程科研团队专项基金项目(T2016-04)
关键词
高寒阴湿地区
道路翻浆
水热耦合
路基
alpine and damp area
road boiling
hydro-thermal coupling
subgrade
