FBG传感器量测混凝土表面应变  

Strain measuring of reinforced concrete column by fiber Bragg grating sensors

作　　者：张枫[1] 黄广龙[1] 徐洪钟[1] 杨放[1] 陈贵[2] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009 [2]江苏省建筑科学研究院有限公司,江苏南京210008

出　　处：《南京工业大学学报（自然科学版）》2008年第4期47-51,共5页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：江苏省科研院所技术开发专项基金资助项目(BM2005517)

摘　　要：采用一种新型FBG应变计量测钢筋混凝土柱在受压过程中的表面应变,并与常规应变片量测方法进行比较.通过机械固定法将FBG应变计安装于立柱表面,并考虑温度对测量结果的影响,最终实现对混凝土结构表面应变的量测,并对其工作性能进行评价.试验结果表明,FBG传感器具有很高的线性度及可重复性,测量值与理论值及常规电阻应变片量测结果一致,为其应用于实际工程提供了依据.While the column was under compression, the surface strain of the column was measured by the new kind of strain gauge and the conventional strain gauge. The fiber Bragg gratine（FBG） strain gauge was fixed on the surface of the columns by mechanical fastening method. Comparing with the conventional strain gauge, the FBG strain gauge is more effective in measuring the surface strain of reinforced concrete structures. Considering the influence of the temperature during test, the result indicated that： FBG sensor behaviors are high linear and repetitive. The test results, theoreticly caculated values and measured results by conventional strain gauge are consistent. This provides the feasible conclusion for practical use.

关 键 词：光纤BRAGG光栅 传感器 受压柱 应变 

分 类 号：TU317.1[建筑科学—结构工程] TP212.9[自动化与计算机技术—检测技术与自动化装置]