级配碎石基层沥青混凝土路面剩余寿命预测和经济性分析  

Residual Life Expectancy Evaluation and Cost Analysis of Graded Aggregate Base Asphalt Pavement

作　　者：姜旺恒[1] 周志刚[1] 

机构地区：[1]长沙理工大学交通运输工程学院,长沙市410004

出　　处：《公路》2013年第10期12-15,共4页Highway

基　　金：2011年湖南省高等学校科学研究项目;项目编号11C0040;海南省交通科技重点项目;项目编号JT20090898002

摘　　要：对运营近两年的沥青混凝土路面实测路表弯沉,再利用现行公路沥青混凝土路面设计规范的设计弯沉计算公式计算该路面还可承受的累计标准轴载作用次数,以此预估路面的剩余寿命,从而对级配碎石基层+水泥稳定碎石底基层沥青混凝土路面进行了经济性分析。结果表明,在路面总厚度不增加较大的前提下,与原设计半刚性基层沥青混凝土路面相比,级配碎石基层沥青混凝土路面更经济。First, the surface deflection of the asphalt pavement which is already open to traffic for approximately 2 years was tested. Then, the number of accumulated standard axle loads that the pavement can still bear was calculated with the formula given by the present specifications for design of highway asphalt pavement, accordingly to analyze the cost of pavement with graded aggregate base plus cement stabilized gravel subbase. The results show that on condition that the whole depth of the pavement not increase sharply, graded aggregate base asphalt pavement is much more cost-effective than semi-rigid base asphalt pavement, which was designed ori^inallv for all the road seetionsl

关 键 词：道路工程 沥青混凝土路面 级配碎石基层 剩余寿命 经济性 

分 类 号：U416.217[交通运输工程—道路与铁道工程]