基于MEPDG的柔性基层沥青路面车辙预估模型地方修正系数研究

发布时间：2018-03-07 02:08

本文选题：道路工程　切入点：柔性基层沥青路面　出处：《公路交通科技》2017年06期 　论文类型：期刊论文

【摘要】：为了研究确定AASHTO 2002力学经验设计方法 (Mechanistic Empirical Pavement Design Guide,MEPDG)车辙预估模型的地方修正系数,依托沪宁高速公路扩建工程柔性基层沥青路面路段进行车辙预测和预测模型修正。对交通轴载谱、气候输入参数进行了实际统计分析,对沥青混合料的动态回弹模量进行实测,均按照水平1输入,其他道路结构参数采用水平2或水平3输入,并进行了车辙预测。对沪宁高速公路无锡段2007年~2013年的车辙检测数据进行统计分析。利用沪宁方向柔性基层路面实测车辙,采用规划求解方法对MEPDG车辙预估模型进行了修正,得到了地区修正系数和修正后的车辙预估模型,并采用宁沪方向有效实测车辙数据对修正后的预估模型进行了验证。结果表明得到的预测数据与实测数据之间的拟合性较高。
[Abstract]:In order to study and determine the local correction coefficient of the rutting prediction model of AASHTO 2002 mechanical Empirical Pavement Design guide, The rutting prediction and prediction model modification of the flexible base asphalt pavement section of the Huning Expressway extension Project is carried out. The actual statistical analysis of the traffic axle load spectrum and climate input parameters is carried out, and the dynamic resilience modulus of the asphalt mixture is measured. All were input according to level 1, and other road structural parameters were input level 2 or level 3, The rut detection data of Wuxi section of Huning Expressway from 2007 to 2013 are statistically analyzed. The MEPDG rut prediction model is modified by using the measured ruts of the flexible base pavement in the direction of Huning, and the method of planning solution is used to modify the rutting prediction model. The regional correction coefficient and the modified rut prediction model are obtained, and the modified prediction model is verified by using the effective rutting data measured in the direction of Nanjing and Shanghai. The results show that the predicted data and the measured data are more suitable.
【作者单位】：长安大学;苏交科集团股份有限公司;新型道路材料国家工程实验室;清华大学土木水利学院;
【分类号】：U416.217

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