多雨地区透水路面设计关键因素研究及应用

Research of Key Factors and Application of Permeable Pavement Design in Rainy Areas

摘要:

透水路面作为海绵城市的关键措施，能有效减轻城市排水负担，降低噪声，并提升道路安全。多雨地区因其雨量丰富，需因地制宜开展透水路面设计。研究指出，透水路面性能受结构特性、材料特性和排水系统三大因素影响，这些因素决定了路面的结构强度、排渗水方式、排水效率和耐久性等。因此，透水路面设计应针对具体需求和环境进行优化，以增强其功能和耐用性，并促进雨水资源的合理利用。依托关键因素，研究提出了一种适用于多雨地区的新型透水路面类型，并利用无明显地表径流极限降雨强度计算公式对该路面结构的排水性能进行了验算，表明设计单层或双层排水沥青路面能满足大雨或暴雨情况下无明显径流的功能使用要求。

Abstract:

Permeable pavements, as a key measure in sponge cities, can effectively alleviate the burden on urban drainage, reduce the noise, and enhance the road safety. In rainy areas, where the rainfall is abundant, the permeable pavement design should be adapted to local conditions. The research indicates that the performance of permeable pavements is influenced by three major factors of structural characteristics, material properties and drainage systems. These factors determine the structural strength, drainage and infiltration way, drainage efficiency and durability of the pavement. Therefore, the design of permeable pavement should be optimized according to the specific needs and the environment to enhance its functionality and durability, and to promote the rational use of rainwater resources. According to the key factors, a new permeable pavement type suitable for the rainy areas is studied and proposed. And the drainage performance of the pavement structure is checked by using the formula for critical rainfall intensity without obvious surface runoff, which shows that the design of single-layer or double-layer drainage asphalt pavement can meet the functional requirements of no obvious runoff under the heavy rain or rainstorm conditions.