【摘要】 为了解中国气候条件对公路的影响情况,开展了中国公路气候区划研究.发现公路对气候区划的需求可分为基本需求、综合需求和宏观需求3个层次,公路气候区划工作应当遵循服务性和实用性原则.提出完整的公路气候区划应当由满足不同层次需求的基础层、综合层和宏观层组成.利用多指标系统聚类分析、指标划分和图层叠置等方法,以累年年≥20℃积温、累年年冰冻指数、累年年非冰冻期降水量以及累年年冰冻期降水量为区划指标,对处于方案体系宏观层的中国公路气候区划进行了具体划分,提出了由10个一级区、22个二级区构成的两级区划方案,为了解中国气候对公路综合影响的异同性以及影响程度差异提供了一个平台.更多还原

【Abstract】 The aim of this study was to make China climatic regionalization for highway,which provided reference for understanding effects of climatic conditions of China on highway.Requirements of highway on climatic regionalization could be divided into three levels of basic requirements,integrated requirements and macro requirements.Service principle and practicability principle were proposed for regionalizing.For various level requirements of highway,climatic regionalization should include three levels of basic layer,integrated layer and macro layer.According to regionalizing indicators of average annual accumulated temperature above 20℃,average annual freezing index,precipitation in freezing period and average annual precipitation in nonfreezing period,the macro layer of the regionalization,China climatic regionalization for highway,were suggested through methods of cluster analysis,division based on indicator and layers superposing,which included 10 first-level regions and 24 second-level regions.It summarizes that climate of China affects highway in macro level.更多还原