摘要
结合3D打印制备光纤土压力传感器,考虑打印密度对模型灵敏度的影响并对光纤土压力传感器进行室内模型箱试验与现场试验。结果表明:①结合OFDR技术将分布式光纤植入3D打印模型内部制备的光纤土压力传感器在室内模型箱试验中具有良好的性能,传感器均成功监测到相应的应变值,其中100%填充密度的光纤土压力传感器测量值与理论值最相近。②在现场覆土监测过程中,现场布设的三个光纤土压力传感器(其标定灵敏度从左到右分别为0.504με/kPa、0.124με/kPa、10.72με/kPa)和一个常规振弦式土压力传感器在三个阶段覆土完成后,传感器均较为准确地监测到了覆土过程中不同覆土深度的压力值。试验结果也反映了3D打印的光纤土压力传感器监测的压力值相较于常规土压力传感器更接近理论值。
3D printing is combined to prepare the pressure sensor of optical fiber soil,which considers the influence of printing density on the model sensitivity,and conducts the indoor model box test and field test on the distributed optical fiber soil pressure sensor.The results show that:①combined with OFDR technology pressure sensor prepared through embedding distributed fiber in 3D printing model has good performance in the indoor model box test,the sensor successfully detects the corresponding strain value,the measurement value of pressure sensor with 100%filling density is most similar to the theoretical value;②in the process of field soil covering monitoring,three OFDR optical fiber soil pressure sensors with calibration sensitivity values from left to right being 0.504με/kPa,0.124με/kPa and 10.72με/kPa respectively,aAnd a conventional chord soil pressure sensor,can accurately monitor the pressure value of different soil covering depths after three stage of soil covering.The test results also reflect that the pressure value detected by the 3D⁃printed opti⁃cal fiber soil pressure sensor is closer to the theoretical value than that of the conventional soil pressure sensor.
作者
朱双厅
黄金生
谢晓峰
王道初
樊健豪
ZHU Shuangting;HUANG Jinsheng;XIE Xiaofeng;WANG Daochu;FAN Jianhao(Powerchina Huadong Engineering Corporation Limited,Hangzhou Zhejiang 310014,China;College of Civil and Transportation Engineering,Shenzhen University,Shenzhen Guangdong 518060,China;Guangzhou Construction Engineering Co.,Ltd.,Guangzhou Guangdong 510180,China)
出处
《传感技术学报》
北大核心
2025年第12期2153-2160,共8页
Chinese Journal of Sensors and Actuators
基金
深圳大学2035追求卓越研究计划项目(2022B007)。
关键词
土压力传感器
3D打印
光频域反射技术
聚乳酸脂
碳纤维
soil pressure sensor
3D printing
optical frequency domain reflection technology
polylactic
carbon fibre
