青藏公路沿线气象参数变化与定量表征

Variation and quantification of meteorological parameters along with the Qinghai-Tibet highway

为了研究青藏高原复杂的气候环境对沥青路面性能影响,选择青藏公路沿线具有代表的6个地区近60年的气温与降水数据进行统计分析,验证了符合温度与外界气候变化对沥青路面性能影响的4温度区间划分方法,提出了温度随时间的定量表征计算方法,进一步量化气温作用,表明4温度区间划分可以反映沥青路面遭受环境温度的影响,气温随时间序列虽然有升高的趋势,但低温作用仍是影响青藏高原地区沥青路面性能的主要因素。研究结果将为青藏高原地区沥青路面温度作用分析提供参考。

To study the effects of complex climate environment of Qinghai-Tibet Plateau on the asphalt pavement performance,six representative regions along the Qinghai-Tibet highway were selected to statistically analyze the temperature and precipitation data in nearly 60 years.It was used to verify the four temperature interval division method with temperature and external effects of climate change on the performance of asphalt pavement and the quantitative characterization calculation method of temperature time was introduced.The temperature effect was further quantified.It showed that the four temperature interval division can reflect the effects of environmental temperature on the asphalt pavement performance.Although air temperature has increasing trend with time sequence,the low temperature effect was still the main factors influencing the performance of asphalt pavement in Qinghai-Tibet Plateau.The results will provide a reference for the temperature impact on the asphalt pavement performance in the Qinghai-Tibet Plateau.