一、前言现行《公路水泥混凝土路面设计规范》与《公路柔性路面设计规范》中,关于路面抗冻厚度,主要是根据当地冻结深度查表确定。按当地冻结深度确定路面抗冻厚度,虽然比以往按公路自然区划确定抗冻厚度合理了一些,但由于路面结构及其组成材料的不同,路基断面形式及湿度状态的不同,在同一大地冻深的情况下,路基冻结深度是不相同的,所以土基对路面的冻胀作用也不相同。根据上述情况可以说明,按当地冻结深度确定路面抗冻厚度,不符合道路实际冻结情 I. Preface The current “Design Code for Highway Cement Concrete Pavement” and “Code for Design of Flexible Roads on the Highway”, on the antifreezing thickness of pavement, are mainly determined by looking up the table according to the local freezing depth. According to the local frozen depth to determine the antifreeze thickness of the pavement, although the antifreeze thickness is determined reasonably according to the natural division of the highway than before, due to the difference of the pavement structure and its component materials, the cross section form of the subgrade and the humidity status, Of the case, the subgrade freezing depth is not the same, so the foundation of the road surface frost heaving effect is not the same. According to the above situation can be explained, according to the local freeze depth to determine the road surface antifreeze thickness, does not meet the actual road freeze