arXiv:2604.01712cs.LGcs.AI2026-04被引 2

用Transformer预测风致结构响应,实现桥梁健康监测的智能预警。

Transformer self-attention encoder-decoder with multimodal deep learning for response time series forecasting and digital twin support in wind structural health monitoring

  • 基于时序特征构建Transformer模型,无需假设风场平稳或振动正常
  • 实测数据验证下预测误差显著低于传统方法,能捕捉激励变化下的真实行为
  • 适合长期基础设施监测,支持持续学习与动态预警,适用于数字孪生系统

本文研究了一种新型Transformer自注意力编码器-解码器模型在风致结构响应预测中的能力,并将其应用于桥梁结构健康监测的数字孪生系统中。首先,利用系统的时序特性训练预测模型;其次,将振动预测结果与实测数据对比,识别显著偏差;最后,将异常情况作为结构变化的早期预警信号。该人工智能模型在无需假设风场平稳性或正常振动行为的前提下,显著优于传统方法。尤其在环境或交通条件变化导致预测不确定性增加、难以界定正常振动状态的情况下,仍能准确捕捉结构行为。研究基于挪威科技大学对哈达尔格大桥的真实监测数据进行验证,结果表明该方法能在实际工况下有效反映系统激励变化,凸显基于Transformer的数字孪生组件在韧性基础设施管理、持续学习与全生命周期自适应监测中的应用潜力。

原文摘要 · Abstract (English)

The wind-induced structural response forecasting capabilities of a novel transformer methodology are examined here. The model also provides a digital twin component for bridge structural health monitoring. Firstly, the approach uses the temporal characteristics of the system to train a forecasting model. Secondly, the vibration predictions are compared to the measured ones to detect large deviations. Finally, the identified cases are used as an early-warning indicator of structural change. The artificial intelligence-based model outperforms approaches for response forecasting as no assumption on wind stationarity or on structural normal vibration behavior is needed. Specifically, wind-excited dynamic behavior suffers from uncertainty related to obtaining poor predictions when the environmental or traffic conditions change. This results in a hard distinction of what constitutes normal vibration behavior. To this end, a framework is rigorously examined on real-world measurements from the Hardanger Bridge monitored by the Norwegian University of Science and Technology. The approach captures accurate structural behavior in realistic conditions, and with respect to the changes in the system excitation. The results, importantly, highlight the potential of transformer-based digital twin components to serve as next-generation tools for resilient infrastructure management, continuous learning, and adaptive monitoring over the system's lifecycle with respect to temporal characteristics.

数字孪生Transformer结构健康监测时间序列预测

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