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基于WOA-VMD的桥梁监测挠度数据处理方法

Huang Huijuan,Yan Quansheng

scientific and technological innovationInformation(2022)

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Abstract
为实现桥梁监测系统中挠度数据的温度效应分离,提出一种自适应数据特征的分解算法.该方法综 合应用了鲸鱼优化算法(Whale Optimization Algorithm,WOA)和 变分模 态分解(Variational Mode Decomposition,VMD),简称WOA-VMD.通过仿真算例得出WOA-VMD提取的日、年温差效应拟合精度与改进的经验模态分解(Empirical Mode Decomposition,EMD)相比,分别提高了 56.35%和 24.48%.采用 WOA-VMD处理洛溪大桥扩建斜拉桥的主梁跨中挠度监测数据,结果表明左右两幅桥的日温差效应与结构温度相关性比改进的EMD高7.37%和5.72%,验证了建议方法的有效性和可靠性.
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