传感技术学报2016，Vol.29Issue(3)：326-331,6.DOI:10.3969/j.issn.1004-1699.2016.03.004
基于光纤光栅技术的半刚性基层力学响应测试分析
Experiments and Analysis on the Mechanical Response of the Semi-rigid Substrate Using Fiber Bragg Grating Sensing Technology
摘要
Abstract
Relying on the NO.104 National Road renovation project,one application research which is using Fiber Bragg Grating(FBG)sensor to test the static and dynamic mechanical response of the semi-rigid substrate is carried out. By testing layer bottom’s tensile strain of the semi-rigid substrate under static and dynamic load effect,analy⁃sis the tensile strain on the impact of both static axle load and vehicle speed of dynamic load. The research indi⁃cates,the tensile strain of the semi-rigid substrate which is under static load effect is proportional to the value of the load,and the tensile strain growth rate is decreasing with the increasing load value. When the load is small,the mea⁃sured value of tensile strain is greater than the theoretical value,because the substrate bears majority load;with the load increasing,the measured value is gradually approaching the theoretical value,that means the pavement struc⁃ture resists load as a whole. Under the dynamic load effect,the tensile strain of the semi-rigid substrate is propor⁃tional to the value of the load and is inversely proportional to the vehicle speed. The test results show that Fiber Bragg Grating sensor has good coordination deformation with semi-rigid substrate,therefore,it can be better used to test the semi-rigid substrate strain and has broad application prospects.关键词
道路工程/应变测试/光纤光栅传感技术/半刚性基层/动静态力学响应Key words
road engineering/strain test/fiber bragg grating(FBG)sensing technology/the semi-rigid substrate/the dynamic and static mechanical response分类
信息技术与安全科学引用本文复制引用
张静,魏连雨,马士宾,李娜,张奕杰..基于光纤光栅技术的半刚性基层力学响应测试分析[J].传感技术学报,2016,29(3):326-331,6.基金项目
河北省高等学校科学技术研究项目（ZD2014099）；河北省教育厅青年基金项目（QN2015036）；河北工业大学优秀青年科技创新基金 （）
