摘要
为提高排水性沥青路面的设计可靠性,采用三维渗流有限元分析方法,并依据短时临近降雨强度等级划分标准对路面的排水性能进行计算和评价。研究结果表明:增加路面横坡坡度、排水层厚度以及排水层材料的渗透系数均能够有效提高排水性沥青路面的排水能力,路面宽度对排水路面的排水能力影响也十分显著。通过计算确定了路面在一定的降雨强度条件下不出现地表径流的条件,可用于指导排水路面排水层厚度、横坡坡度的选择以及排水性沥青混合料目标空隙率的确定。
In order to improve the design reliability of the porous asphalt pavement,a 3-D finite element seepage analysis method is used to evaluate the drainage capacity of the porous asphalt pavement,based on gradation criteria of short-term rainfall intensity.The results indicate that the drainage capacity of porous asphalt course（PAC）is improved effectively with the increase of the gradient of cross slops,the thickness of the course and the permeability coefficient of porous asphalt mixture.Moreover,the width of the porous asphalt layer also has a significant impact on the drainage capacity of PAC.The condition of no runoff of the porous surface layer under certain rainfall intensity can be confirmed by the results,which can guide the choice of the thickness and width of the porous asphalt layer and the determination of the aim void of the porous asphalt mixture.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2017年第4期568-573,共6页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国家科技支撑计划(2015BAL0B00)资助项目
江苏省科技计划(BE2015349)资助项目
关键词
排水性沥青路面
排水性能
三维渗流有限元分析
渗透系数
降雨强度
porous asphalt pavement
drainage performance
3-D finite element seepage analysis
permeability coefficient
rainfall intensity
作者简介
通信作者：季天剑，男，副教授，硕士生导师，E-mail：jitianjian@nuaa．edu．cn
