CNN-LSTM在桥梁预警机制的研究与应用

STUDY AND APPLICATION OF CNN-LSTM IN BRIDGE HEALTH MONITORING AND EARLY WARNING MECHANISM

  • 摘要: 为了更好地满足桥梁健康监测系统的需求,提高桥梁健康监测系统的性能,将深度学习与时序数据库InfluxDB结合起来构建新型桥梁健康监测系统的预警机制,提高现代桥梁健康监测系统的危险感知能力。以赣江特大桥为背景,将卷积神经网络CNN与长短时记忆网络LSTM结合起来构建CNN-LSTM模型,对桥梁的挠度数据进行预测。通过对实验结果分析发现CNN-LSTM模型能够有效预测出桥梁的挠度数据,在置信区间为±0.1 mm的情况下,准确率达到92.8%,在预测未来十分钟的挠度数据中,均方根误差RMSE为0.109 7。实践表明时序数据库InfluxDB与CNN-LSTM模型的融合增强桥梁健康监测系统对潜在威胁的感知能力,有效提高桥梁健康监测系统的预警报警机制。

     

    Abstract: In order to better meet the needs of the bridge health monitoring system and improve the performance of the bridge health monitoring system, this paper combines deep learning with the time series database InfluxDB to build a new early warning mechanism for the bridge health monitoring system and improve the risk perception ability of the modern bridge health monitoring system. This paper took the Ganjiang River Bridge as the background and combined the neural network CNN with the long short-term memory network to construct a CNN-LSTM model to predict the deflection data of the bridge. Through the analysis of the experimental results, it is found that the CNN-LSTM model can effectively predict the deflection data of the bridge. When the confidence interval is ±0.1 mm, the accuracy rate reaches 92.8%. In predicting the deflection data of the next ten minutes, the root mean square error (RMSE) is 0.109 7. Practice shows that the fusion of the time series database InfluxDB and the CNN-LSTM model enhances the bridge health monitoring system's perception of potential threats, and effectively improves the early warning and alarm mechanism of the bridge health monitoring system.

     

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