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Analysis of random temperature field for freeway with wide subgrade in cold regions

机译:寒冷地区宽路基高速公路随机温度场分析

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摘要

In cold regions, the freeway with wide pavement has larger heat absorption area than the normal, resulting in more difficulties to ensure the stability of embankment. However, the conventional finite element methods for stability analysis are always deterministic, rather than taking random parameters and conditions into account. In this paper, using stochastic finite element methods, the parameters of boundary conditions are considered as random variables, and the random temperature fields for wide-subgrade freeway are obtained and analyzed. The results show that heat accumulation effect is obvious in the central section of subgrade and that the closer it is to the upper boundary of the roadbed, the greater the temperature variance is. Besides, both effects increase with time.
机译:在寒冷地区,人行道宽阔的高速公路比正常人具有更大的吸热面积,导致确保路堤稳定的难度更大。但是,用于稳定性分析的常规有限元方法始终是确定性的,而不是考虑随机参数和条件。本文采用随机有限元方法,将边界条件的参数作为随机变量,获得并分析了宽路基高速公路的随机温度场。结果表明,路基中段的蓄热效果明显,距离路基上界越近,温度变化越大。此外,两种效果都随时间增加。

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