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为了更好地抵消气候变暖影响,保护路基下伏多年冻土不被融化,同时减小阴阳坡温度差异引起的冻土路基纵向断裂现象,文章应用热管耦合冻土路基的三维非稳态相变传热模型对斜插式热棒保温板复合结构路基的温度场进行模拟预测,并与斜插式热棒、保温板以及直插式热棒保温板复合路基温度场进行了对比分析,结果表明:斜插式热棒保温板路基底人为冻土上限呈现最良好的驼峰型对称分布,且人为冻土上限相对于多年冻土上限抬高得也最多,抬升值大于3m。
In order to counteract the effects of climate warming better, the permafrost beneath the protected subgrade is not thawed, and the vertical rupture of frozen soil subgrade caused by the difference of the temperature of the yin and the sun is reduced. In this paper, the three-dimensional unsteady phase Variable heat transfer model was used to simulate and predict the temperature field of the slab-type composite thermal insulation composite thermal insulation board. Comparing with the temperature field of composite embankment, The results show that the upper limit of permafrost is the most favorable hump type symmetrical distribution, and the upper limit of artificial permafrost is also the highest relative to the upper limit of permafrost. The value of lift is more than 3m.