根据裸光纤光栅(FBG)对应变的灵敏度远高于对压力的灵敏度这一特点,设计了一种基于等强度梁结构的FBG冰力传感器,并可以通过调节封装构件的尺寸调节其测量压力的灵敏度系数。对传感器的标定结果显示,这种FBG冰力传感器的线性相关度良好,实测的灵敏度系数与理论值一致。该种传感器在冰激桥墩振动模型试验中得到了应用,成功监测了桥墩在不同冰速撞击下受到的冰力。实验表明,这种FBG传感器灵敏度高、可靠性好、对结构自身的影响很小,可直接测量冰的撞击力,适合于模型实验中的冰力监测。 According to FBG’s sensitivity to strain much higher than the sensitivity to pressure, an FBG ice force sensor based on isometric beam structure is designed and its measuring pressure can be adjusted by adjusting the size of the package. Sensitivity coefficient. The calibration results of the sensor show that the linear correlation of the FBG ice force sensor is good, and the measured sensitivity coefficient is consistent with the theoretical value. The sensor was applied to the vibration model test of icy pier, and the ice force suffered by pier under different ice speed was successfully monitored. Experiments show that the FBG sensor has high sensitivity, good reliability and little influence on the structure itself, and can directly measure the impact force of ice and is suitable for ice force monitoring in model experiments.