热棒填土路基降温效果的三维非线性有限元分析
发布时间：2018-10-13 14:42
【摘要】：基于热棒的工作原理,结合唐古拉山冻土区的道砟填土路基,考虑热棒材料本身的高导热性、阴阳坡、冻土相变等因素,采用有限单元法计算分析热棒对填土路基的降温效果。研究结果表明:第1年热棒运行结束后在路基阳坡下方形成直径大约为8.6 m、温度低于-0.5℃的低温区;右坡脚(阴坡)下形成直径大约为9.6 m、温度低于-0.5℃的低温区,并在低温区内热棒周围形成了温度低于-3℃的条形低温核;第3年路基下方靠近阴坡位置形成温度低于-0.8℃的低温区,热棒起到了很好的制冷效果,保证路基下伏冻土不融化,从而保证路基的稳定性。
[Abstract]:Based on the working principle of hot bar, combined with the roadbed of ballast fill in the frozen soil area of Tanggula Mountain, considering the factors such as high thermal conductivity of heat bar material itself, yin and yang slope and phase change of frozen soil, the cooling effect of hot bar on fill subgrade is calculated and analyzed by finite element method. The results show that the diameter of the hot bar is about 8.6 m and the temperature is lower than -0.5 鈩，
本文编号：2268991
[Abstract]:Based on the working principle of hot bar, combined with the roadbed of ballast fill in the frozen soil area of Tanggula Mountain, considering the factors such as high thermal conductivity of heat bar material itself, yin and yang slope and phase change of frozen soil, the cooling effect of hot bar on fill subgrade is calculated and analyzed by finite element method. The results show that the diameter of the hot bar is about 8.6 m and the temperature is lower than -0.5 鈩，
本文编号：2268991
本文链接：https://www.wllwen.com/kejilunwen/jiaotonggongchenglunwen/2268991.html
