多年冻土地区公路路基阴阳路肩温度变化比较

Comparison of temperature variation ofshady and sunny slope shoulder of highway subgrade in permafrost region

针对处于多年冻土地区沥青路面下公路路基温度变化情况,本文分析了路面以下、天然地表(原地面)以下及阴阳路肩温度变化情况,比较了阴阳路肩平均温度、变化幅度及年平均温度,发现普通路基存在比较明显的阴阳坡效应,阳坡升温幅度、升温速率及冻土上限始终高于阴坡。

For highway subgrade with the temperature of asphalt pavement in permafrost region,this paper analyzes the road surface,natural surface(origin ground)with the following temperature changes and shoulder of shady and sunny slope,compared average temperature,amplitude of variation changes the annual average temperature.It is found that with common subgrade,there is obvious shady and sunny slope effect,the amplitude of variation,warming rate,and permafrost upper limit of sunny slope is always higher than that in shady slope.