Acta Geodaetica et Cartographica Sinica ›› 2024, Vol. 53 ›› Issue (6): 1113-1127.doi: 10.11947/j.AGCS.2024.20230387

• Smart Surveying and Mapping • Previous Articles     Next Articles

A general progressive decomposition long-term prediction network model for high-speed railway bridge pier settlement

Xunqiang GONG1,2(), Hongyu WANG2,3(), Tieding LU1,2, Wei YOU3   

  1. 1.Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake, Ministry of Natural Resources, East China University of Technology, Nanchang 330013, China
    2.School of Surveying and Geoinformation Engineering, East China University of Technology, Nanchang 330013, China
    3.State-Province Joint Engineering Laboratory of Spatial Information Technology for High-speed Railway Safety, Southwest Jiaotong University, Chengdu 611756, China
  • Received:2023-09-05 Published:2024-07-22
  • Contact: Hongyu WANG E-mail:xqgong1988@163.com;wanghyvv@foxmail.com
  • About author:GONG Xunqiang (1988—), male, PhD, associate professor, majors in intelligent monitoring of major transportation engineering. E-mail: xqgong1988@163.com
  • Supported by:
    The National Natural Science Foundation of China(42101457);The Key Open Fund of Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake of Ministry of Natural Resources(MEMI-2023-01)

Abstract:

Uneven settlement of high-speed railway bridge pier is one of the potential causes leading to track irregularities. Accurately predicting settlement of bridge pier is of significant importance for ensuring the reliability and safety of railway construction and operation. Most conventional time series prediction models are tested only on well-preprocessed datasets without missing values. However, in real-world scenarios of high-speed railway bridge pier settlement, the data are characterized by infrequent and irregular observation intervals and complex, variable settlement patterns, posing challenges for long-term prediction. To address this, we introduce the general progressive decomposition long-term prediction network (GPDLPnet), which abandons traditional preprocessing concepts and embeds the preprocessing phase within the network structure, achieving progressive preprocessing during training. In each iteration, GPDLPnet uses an improved diagonally-masked self-attention (IDMSA) module to analyze missing patterns in the settlement data, then decomposes and reconstructs the data into high-frequency, low-frequency, and trend sub-components through an improved complete ensemble empirical mode decomposition with adaptive noise (ICEEMDAN) module. These sub-components serve as feature inputs for the BiLSTM-RSA-Resnet prediction module, which outputs recursive predictions, thus enabling long-term prediction of high-speed railway bridge pier settlement. Utilizing real-world engineering data, experiments under two typical observation modes, high-frequency and low-frequency, are conducted. GPDLPnet demonstrates excellent predictive performance over a 3-4 month, surpassing seven other models in accuracy indexes.

Key words: deep learning, high-speed railway bridge pier, settlement prediction, residual network, convolutional neural network

CLC Number: