摘要
利用冻胀试验装置,对国道109线青海省境内橡皮山段严重冻胀翻浆路段路基填料的砂质粉土,在封闭系统和开敞系统中单向冻结,在静荷载作用下进行了一维冻胀试验。试验结果表明:在封闭系统中冻胀量随含水量的增大而增大,试样也将发生水分迁移现象;开敞系统冻胀量远大于封闭系统冻胀量,且与初始含水量有关。
Using the test apparatus for frost heaving property, one-dimensional frost heaving test is carried out under static load on condition of unidirectional freezing in close and open system with the sandy silt for subgrade filling for seriously frost heaving boiling segment of Xiangbi Mountain section of State Road 109 within Qinghai Province. The test result shows that the amount of frost heaving in close system is increased with the moisture content and water migration will take place on the test specimen; the amount of frost heaving in open system is far more than that in close system, which is related to the initial moisture content.
出处
《路基工程》
2012年第2期86-88,共3页
Subgrade Engineering
基金
国家自然科学基金青年基金(41001036)
西部交通建设科技项目(200831879524)
关键词
含水量
冻胀量
封闭系统
开敞系统
moisture content
amount of frost heaving
close system
open system
