摘要
温度差异是高原冻土地区公路路基发生翻浆的一个重要因子。通过建立的冻土路基温度场的控制方程,建立计算物理模型和数值模拟计算模型,首先模拟气候因素变化过程,得到不同时期冻土路基温度场分布,温度场随季节的变化反映了路基冻结锋面的迁移,从而分析了关键点的温度差异。提出了将换填部分冻结土与阻断水分迁移路径的抗浆结构相结合的综合防治技术设想,这对进一步研究路基翻浆的治理技术有重要的理论意义.
The diversity of temperature is an important factor for tympanites to occur in highway roadbed. The phyaical model and calculating model of temperature field are founded according to the founded controlling equation in this paper. By simulating the changing progress of climate features, the temperature field of roadbed in permafrost region in different season is got. The variations of temperature field with time indicate the variations of freezing front - surface. Then, some results are got by analyzing the diversity of temperature of key points. The last, the technology assumption of effectively controlling tympanites which combines replacing part frozen soil and resisting highway tympanites structure is brought up. It has significant senses for further research of tympanites＇ controlling technology.
出处
《华东交通大学学报》
2007年第1期32-34,共3页
Journal of East China Jiaotong University
关键词
翻浆
温度场
冻土路基
路基变形
有限元
tympanites
temperature field
frozen soil roadbed
roadbed deformation
finite element
