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局部冲刷引起桥梁结构失效的情况时有发生,因此桥墩局部冲刷监测方法的研究具有重要的现实意义。本文提出一种基于FBG传感原理的局部冲刷模态监测方法,该方法通过建立频率与冲刷状态参量之间的耦合关系达到对局部冲刷全过程的实时监测。并应用ANSYS对不同材料属性和截面形状建立模型,进而分析计算结果对该监测方法进行优化,为其在实际工程中的应用提供了理论依据。
The failure of bridge structure caused by local erosion has occurred from time to time. Therefore, it is of great practical significance to study the local scour monitoring method of piers. In this paper, a method of local erosion modal monitoring based on FBG sensing principle is proposed. This method achieves the real-time monitoring of the local erosion process by establishing the coupling relationship between the frequency and the erosion state parameters. And the application of ANSYS to model the different material properties and cross-sectional shapes, and then analyze the calculation results to optimize the monitoring method, which provides a theoretical basis for its application in practical engineering.