排水性沥青路面径流控制效果分析

Analysis on Runoff Control Effect of Drainage Asphalt Pavement

摘要:

近年来随着海绵城市建设的不断推进和城市道路对抗滑、降噪等功能的要求，大量排水性沥青路面被用于高等级道路。排水性沥青路面的主要功能是提高行车安全性，降低交通事故，但在海绵城市建设中应同时考虑其对雨水径流的控制效应。为明晰排水性沥青路面的径流控制效能，通过计算模拟分析该路面在不同降雨强度、透水层厚度、透水沥青混合料空隙率等条件下的路表径流产生情况，分析了上述参数变化对路表径流产生情况的影响，提出了排水性沥青路面与排水设施的衔接要求和考虑经济性的径流总量控制提升方法。所作研究对保障设计降雨条件下的路表径流控制和优化排水性沥青路面设计具有重要作用。

Abstract:

In recent years, with the continuous promotion of sponge city construction and the requirements for anti-skid and noise reduction functions on urban roads, a large number of drainage asphalt pavements have been applied to high-grade roads. The main functions of these pavements are to improve the driving safety and reduce the traffic accidents. However, the control effect on rainwater runoff should be taken into consideration simultaneously in the construction of sponge cities. In order to clarify the runoff control efficiency of drainage asphalt pavements, by calculating, simulating and analyzing the surface runoff generation of drainage asphalt pavement under the conditions of different rainfall intensities, thickness of the permeable layer and porosity of the permeable asphalt mixture, the impact of the above parameter changes on surface runoff generation is analyzed. The requirements for the connection between drainage asphalt pavement and drainage facilities and the methods for improving the total runoff control considering economy are proposed. The research conducted plays a significant role in ensuring the control of surface runoff under designed rainfall conditions and optimizing the design of drainage asphalt pavement.