排水性沥青路面排水性能评定方法研究

排水性沥青路面的排水性能是此种结构最重要的性能,本文建立了排水性路面排水表层的渗流模型,从理论上分析研究了排水性路面排水面层的排水机理及排水性能的评价指标,给出了各主要参数的确定方法;介绍了自行开发的试验仪器,并通过室内试验对排水性沥青混合料竖向和横向渗透系数的测定方法进行研究,给出了计算公式;设计试验方法,对排水性沥青混合料进行室内的模拟降雨试验,研究路面两端断面的边界条件,找出了断面上的潜水层厚度与路面坡度及降雨强度之间的关系。

Research on Evaluation Method of Drainage Performance of the Porous Asphalt Pavement

The drainage performance is the most important performance of the porous asphalt pavement.We set up a seepage model of the infiltration pavement of the porous asphalt pavement,and analyzed the drainage mechanism of the infiltration pavement and the evaluation index of drainage performance through theory deducing,and gave the method of determining main parameters.And we introduced the newly developed instruments,and researched the measurement of the vertical and transverse infiltration coefficient through indoor experiments,and deduced the formula.We designed the experiment,and studied the boundary condition in the transect of the pavement through indoor simulating rainfall experiment to discover the relationship among the thickness of water table in the transect and the gradient of pavement and the intensity of rainfall.