传感元件对沥青路面基体材料力学性能的影响  

Effect of Sensing Element on Mechanical Properties of Asphalt Pavement Matrix Materials

作　　者：闫瑾[1] 罗代松[1] 李亚非[1] 惠嘉[1] 田苗苗[1] Yan Jin;Luo Dai-song;Li Ya-fei;Hui Jia;Tian Miao-miao(China Academy of Transportation Sciences,Beijing 100029,China)

机构地区：[1]交通运输部科学研究院,北京100029

出　　处：《交通运输研究》2021年第1期115-123,共9页Transport Research

基　　金：中央级公益性科研院所基本科研业务费项目(20187508)。

摘　　要：鉴于路面监测技术中传感元件与沥青路面基体材料的受力状态存在相互作用及耦合效应,同时路面材料损伤也会对测试结果产生影响,为同时实现再生沥青路面的长寿命和高性能,采用ABAQUS软件平台建立嵌入受拉、受压光纤光栅传感元件的结构车辙板有限元模型,分析得出传感元件对试件各力学参数的影响规律以及传感元件模量、基体材料模量组合对试件应力场和应变场的影响规律。结果表明:传感元件对其周围沥青混合料的局部应力、应变及长期蠕变特性产生了一定的影响,而这种影响与嵌入传感元件的模量以及材料与传感元件之间的距离有关。There were interaction and coupling effects between the sensing element and the stress state of asphalt pavement matrix materials during pavement monitoring,and the pavement materials′damage also affected the test results.In order to achieve the purposes of long life and high performance of recycled asphalt pavement,the ABAQUS software platform was used to establish a finite element model of structural rut plate embedded in tensile and compressed optical fiber Bragg and grating sensors.The influence of the sensor on the mechanical parameters of the specimen and the influence of the combination of the sensor′s modulus and the matrix materials′modulus on the stress field and strain field of the specimen were obtained based on the study.The results show that the sensor has a certain impact on the local stress,strain and long-term creep behavior of asphalt mixture around the sensor,which is related to the modulus of the embedded sensor and the distance between the Matrix Materials and the sensor.

关 键 词：路面监测 传感元件 有限元 作用机理 应力 应变 

分 类 号：U416.01[交通运输工程—道路与铁道工程] U416.2