甘南高寒阴湿地区具有明显的海拔高、大气压力低、紫外线强、长冬无夏、严寒阴湿、降水丰富、昼夜温差较大、夏季阵雨及冻融频繁等特点。本文结合尕秀至玛曲二级公路改建工程沥青路面建设体会,通过对项目所在地气候变化情况的观测统计,分析了高寒阴湿地区气候特点、路面损坏及使用性能特征,提出了该地区二级公路沥青路面施工设备与人员安排、施工组织、半刚性基层沥青路面的优化设计及施工质量保证措施等相关建议,以供今后类似工程参考。 Gannan alpine area is humid and humid areas with obvious elevation, low atmospheric pressure, strong ultraviolet light, long summer without summer, cold and wet, abundant rainfall, larger temperature difference between day and night, summer showers and freeze-thaw frequent features. Based on the observation and statistics of the climate change in the project area, the paper analyzes the climatic characteristics, the damage to the pavement and the service performance characteristics in the cold and humid areas of the project, Highway asphalt pavement construction equipment and personnel arrangements, construction organization, semi-rigid asphalt pavement optimization design and construction quality assurance measures and other related suggestions for future similar projects.