光纤光栅传感技术以其自身的优势,在结构裂缝监测等工作中得到了广泛的应用,然而由于其自身很容易折断的特点,其测量的范围较小.在前人研究成果的基础上,设计了一种简易弯曲型光纤光栅裂缝传感装置,并通过实验对此传感装置的性能进行了验证.实验结果表明,本裂缝传感装置切实可行,可明显提高普通光栅光纤传感器的测量范围,而且具体良好的重复使用能力,以应对实际工程中裂缝开展情况的不确定性. Due to its own advantages, FBG sensing has been widely used in structural crack monitoring and other work, but its measuring range is small because of its easy to break off.Based on the previous research results, A simple curved fiber grating crack sensing device was designed and the performance of the sensing device was verified through experiments.The experimental results show that the crack sensing device is feasible and can obviously improve the measurement range of ordinary grating optical fiber sensor , But also the specific good ability of repeated use to deal with the uncertainty of the crack development in the actual project.