基于FBG传感技术的混凝土早期性能监测技术的比较研究  

A Comparative Study of the Monitoring Techniques for Early-stage Concrete Properties by FBG Sensing Technique

作　　者：王万文 张广峻[2] 

机构地区：[1]张石高速公路张家口管理处,河北张家口075000 [2]邢台职业技术学院建筑工程系,河北邢台054035

出　　处：《洛阳理工学院学报（自然科学版）》2013年第1期35-38,共4页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

基　　金：河北省建设科学技术研究计划重点项目(2012-133)

摘　　要：混凝土早期变形是影响混凝土结构耐久性的主要原因之一。因此,监测混凝土硬化早期的收缩应变对保证混凝土结构的耐久性有重要意义。本文运用埋设型光栅布拉格光纤(FBG)应变传感器监测混凝土的早期变形性能。由于F BG应变传感器同时感应温度和变形,需要进行温度补偿,分别采用精度高但价格贵的FBG温度计和精度一般但价格较低的热电偶温度计分别进行温度补偿,对混凝土试件硬化早期的水化温度、收缩应变进行了实时监测。结果表明两种不同补偿方法都比较精确地监测了混凝土硬化早期的温度和应变。通过分析得出了两种监测方法的优缺点。The early stage deformation of concrete is one of the main causes influencing durability of concrete structures, therefore it is important to monitor the shrinkage deformation of concrete during its early phase for ensuring structure durability. FBG strain sensor is applied to monitor the early stage concrete deformation in this paper. Temperature compensation for FBG strain sensor is necessary as it senses both strain and temperature. FBG temperature sensor and thermalcouple are used to compensate FBG strain sensor separately. The results show that both of the methods manage to obtain the strain and temperature in concrete＇s early stage, and their advantages and disadvantages are analyzed and explained by comparison.

关 键 词：混凝土结构 FBG传感器 温度补偿 比较研究 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]