南京航空航天大学学报（英文版）2021，Vol.38Issue(z1)：69-75,7.
干湿循环作用下路基土水分迁移规律试验研究
Law of Water Content Change in Subgrade Soil Under Action of Dry?Wet Cycle
张清淞 1季天剑 1肖雷1
作者信息
- 1. 南京航空航天大学民航学院,南京 211106,中国
- 折叠
摘要
Abstract
Due to the influence of the groundwater level,the internal humidity of the subgrade changes and the stability of the subgrade is affected. The main purpose of this paper is to obtain a reliable model of subgrade soil water content variation under the action of dry-wet cycle through sensor readings. Thus,an indoor soil column model test system is designed,and the readings of the sensors are used to determine the changing law of moisture field in the subgrade soil. The sensor readings indicate that the water content gradually decreases along the height of the soil column,and the water in the upper part of the soil column continuously loses,while the water in the lower part migrates upward to supplement. With the increase of dry-wet cycle index,the water holding capacity of soil decreases,and the soil surface gradually cracks and tends to rupture.关键词
路基土/干湿循环/含水率变化/土柱/室内试验Key words
subgrade soil/dry-wet cycle/water content change/soil column/indoor test分类
交通工程引用本文复制引用
张清淞,季天剑,肖雷..干湿循环作用下路基土水分迁移规律试验研究[J].南京航空航天大学学报（英文版）,2021,38(z1):69-75,7.
