基于实测验证的沥青路面力学模型研究  

Study on Asphalt Pavement Mechanical Model Based on Calibration of Measurement

作　　者：白琦峰[1] 钱振东[1] 吴春颖[2] 

机构地区：[1]东南大学,江苏南京210008 [2]江苏省交通科学研究院,江苏南京211112

出　　处：《公路交通科技》2011年第5期39-43,共5页Journal of Highway and Transportation Research and Development

基　　金：江苏省科技项目(国际科技合作)(BZ2007025)

摘　　要：实测不同路面结构温度、应变数据,与不同路面力学模型、参数的计算结果对比,研究与路面实际受力更为相符的力学模型和材料力学参数。对不同路面结构的层间连续状态进行分析,并研究了路面力学指标计算结果的修正方案。结果表明：基于动态模量的弹性层状体系更适于路面力学分析;力学模型中柔性路面、组合式基层沥青路面层间状态可假设为连续,半刚性基层与沥青面层间合适的摩擦系数为0.65-0.75;提出了力学理论计算指标向实测结果修正的方法,按此修正,不同路面结构的力学分析结果与实测结果的相关系数可达到0.9。The data of temperature and strain of asphalt pavement were measured.Based on comparing the calculated strains and pavement mechanical models,the pavement mechanical model and parameters which can agree with the actual pavement more closely was studied.Furthermore,the interface continuity conditions of different types of pavement and the amendment method of calculated pavement mechanical parameters was studied.It is found that（1） multi-layer elastic model using dynamic modulus is the better choice for pavement mechanical analysis;（2） as for the layers interface continuity condition,flexible pavement and combined base pavement are continuous,however semi-rigid base pavement is semi-continuous with friction coefficient of 0.65~0.75.The amendment method of calculated pavement mechanical parameters was proposed,and the correlation coefficient between the measured and the calculated values is about 0.9 accordingly.

关 键 词：道路工程 路面力学模型 实测路面应变分析 沥青路面 

分 类 号：U416.217[交通运输工程—道路与铁道工程]