光纤光栅传感器在桥墩模型试验中的应用  

Application of Fiber Grating Sensor on Experiment of Bridge Pier Model

作　　者：汪日光[1] 叶献国[2] 孙汝蛟[3] 孙利民[3] 

机构地区：[1]安徽建筑工业学院机械与电气工程系,安徽合肥230022 [2]合肥工业大学土木建筑工程学院,安徽合肥230009 [3]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《建筑科学与工程学报》2007年第3期51-55,共5页Journal of Architecture and Civil Engineering

基　　金：国家自然科学基金项目(50178053);北京市重点实验室开放基金项目(EESR2002-4)

摘　　要：针对光纤光栅传感器在不同受力情况下的测量效果,选取了3个分别采用Pushover和拟静力加载的钢筋混凝土桥墩模型,运用光纤光栅传感器和电阻应变片及电阻位移计,对模型的钢筋和混凝土应变及顶部水平位移进行了同步测量(共9组测量对比试验)。通过比较2类传感器在同一时刻的测量值和整个加载过程的时间-应变(位移)曲线,并结合试验结果对其中差异做了分析。结果表明,2类传感器量测结果符合较好,光纤光栅应用于应变、位移的测量是可靠的、有效的。最后对此类试验中需要注意的问题提出了建议。Aimed at finding out the measure effect of fiber grating sensor under different loads, the Pushover and pseudo-static experiment were carried out for three reinforced concrete bridge pier models; the strains of the steel bar and concrete as well as horizontal displacements on top of the model were measured simultaneously by using the fiber grating sensor and the strain gauge （9 groups measure contrast tests）. The simultaneous measured values and the time-strain （displacement） curves coming from two types of sensor were contrasted, and the points with more dispersion were analyzed according to the fact of experiment. The results demonstrate that the two groups of data are well corresponding. It is dependable and effective that the fiber grating sensor can be applied to measure the strain and displacement. Finally, authors put forward some advices which needed to pay attention to research of this type of experiments in future.

关 键 词：光纤光栅传感器 应变片 位移计 模型试验 

分 类 号：TU443.22[建筑科学—岩土工程]