考虑层间摩擦接触的沥青路面模量反演分析  

Back Analysis of Asphalt Pavements Modulus Considering Interface Friction Contact

作　　者：孙广利 金辰 SUN Guangli;JIN Chen(Inner Mongolia Highway Traffic Investment Co., Ltd., Huhhot 010000, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China)

机构地区：[1]内蒙古公路交通投资发展有限公司,呼和浩特010000 [2]同济大学道路与交通工程教育部重点实验室,上海201804

出　　处：《交通科技》2021年第5期33-37,共5页Transportation Science & Technology

摘　　要：为充分考虑层间非连续接触条件对半刚性基层沥青路面模量反演的影响,文中基于层间非连续接触条件,建立FWD荷载作用下的三维动力有限元模型,构建路表弯沉盆与各结构层模量对应数据库,并进行弯沉盆参数指标的敏感性分析。通过回归分析提出了结构层模量反演回归模型。结果表明,不同弯沉盆参数对结构层模量变化的敏感程度不同;考虑层间摩擦接触的结构层模量反演回归模型具有较高精度,可用于实际工程。Based on discontinuous contact conditions between layers,a three-dimensional dynamic finite element model under FWD was established,and the database of pavement deflection basin and layer modulus was constructed,the regression model of layer modulus was proposed by regression analysis.The results show that the sensitivity of different deflection basin parameters to the change of layer modulus is different.The regression model of layer modulus has high accuracy and can be used in practical engineering.

关 键 词：半刚性基层 沥青路面 模量反演 落锤式弯沉仪 层间接触 

分 类 号：U416.01[交通运输工程—道路与铁道工程]