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过水路面作为路面一种结构形式,同建造桥梁相比具有造价省、工期短、施工方便的特点,在我国南方水系发达地区低等级公路穿越季节性河流时应用较为广泛,但目前国内外对过水路面结构在理论和施工上没有文献给予总结,文章结合沿海地区国道过水路面改建工程设计和施工,对路面的结构形式、路面的防水处理、各结构层施工控制要点以及原理进行总结论证。提出沿海软土地基上的典型路面结构和浅层抛石挤淤处理沿海地区深厚软基的相关设计指标问题。
As a structural form of pavement, over-water pavement has the characteristics of cost-saving, short construction period and convenient construction compared with the construction of bridges. It is widely used when crossing low-grade highways in the developed areas of southern China through seasonal rivers. At present, The theory and construction of over-water pavement structure have not been summarized in the literature. Based on the design and construction of national pavement over-water pavement reconstruction project in coastal area, this paper summarizes the structural forms of pavement, waterproofing of pavement, construction control points and principles of each structural layer . The typical design of pavement along the soft soil foundation along the coast and the silt-dumping of shallow riprap are proposed.