摘要
针对XPS板隔热层在多年冻土区路基中应用的适宜性展开研究,分析了XPS板路基形式的温度随深度、宽度和时间的变化情况。结果表明:各个测点的地温年变化近似均呈现正弦分布形式,且地温周期大致相同;各个测点的全年温差随深度增加均减小,可推断出活动层厚度;路基横断面对称位置处呈现不对称性,可能导致路基的不均匀变形。研究成果可进一步为类似工程提供依据。
Based on the discussion of the application of subgrade with XPS board in permafrost region, temperature variations of subgrade with XPS board are analyzed in this paper.According to the temperature distribution curves,the main conclusions are as follows:With roughly the same period,annual temperatures of observation sites distribute as sine curves.As annual temperature variance of observation sites decreases with increasing depths,the thickness of active layer can be estimated.And ground temperatures of symmetric sites of cross- section distribute asymmetrically,which may result in differential deformation of subgrade.Also, this paper can be seen as preference to similar projects.
出处
《青海交通科技》
2015年第1期45-47,49,共4页
Qinghai Transportation Science and Technology
关键词
多年冻土区
XPS板
现场试验
温度特性
permafrost region
XPS board
field test
temperature characteristics
