基于FWD弯沉盆和大数据分析的沥青路面模量反演方法的合理性分析  

Rationality Analysis on Methodology of Asphalt Pavement Modulus Back-calculation based on FWD Basin and Big Data Concept

作　　者：李伟雄 熊春龙 黄志勇 聂文 LI Weixiong;XIONG Chunlong;HUANG Zhiyong;ME Wen(Guangzhou Xiaoning Institute of Roadway Engineering Co.,Ltd.,Guangzhou 510620)

机构地区：[1]广州肖宁道路工程技术研究事务所有限公司,广州510620

出　　处：《广东公路交通》2018年第4期1-7,28,共8页Guangdong Highway Communications

基　　金：国家自然科学基金项目(51678251)

摘　　要：沥青路面模量反演是评价沥青路面结构承载能力及路面材料衰变的重要方法。提出了基于FWD弯沉盆和大数据分析的模量反演方法并开发了相应的反演软件,结合交通部足尺环道沥青路面的实测弯沉盆数据来反演四层路面结构的模量,并从测试温度差异、测试荷载差异及测试设备差异等方面,对反演结果的规律和规律的合理性进行了分析。结果表明,反演结果合理,符合路面经验模量的取值范围,反演结果的变化规律与材料特性及工程实际经验符合。反演方法兼具反演精度高和反演速度快等特点。Asphalt pavement modulus back-calculation is an important means to evaluate the bearing capacity of asphalt pavement and the decay of pavement materials. In this paper,modulus of four-layers pavement structure has been back-calculated using measured deflection basin data of RIOH track＇s asphalt pavement according to a new methodology of modulus back-calculation based on big data concept. And then the rationality of back-calculated modulus and its variations has been analyzed from the differences of test temperature,test load levels and test equipment. The results have shown that modulus back-calculation results in this paper is reasonable,the law of modulus variation is in good agreement with the engineering practice. The back-calculation accuracy and speed is high.

关 键 词：模量反演 合理性 反演精度 四层路面结构 实测弯沉盆 

分 类 号：U416.01[交通运输工程—道路与铁道工程]