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Article

Method for Diagnosing the Uneven Settlement of a Rail Transit Tunnel Based on the Spatial Correlation of High-Density Strain Measurement Points

by 1,2, 1 and 1,*
1
School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
2
Jinan Rail Transit Group Co., Jinan 250014, China
*
Author to whom correspondence should be addressed.
Academic Editor: Constantin Chalioris
Sustainability 2021, 13(16), 9245; https://doi.org/10.3390/su13169245
Received: 7 July 2021 / Revised: 31 July 2021 / Accepted: 5 August 2021 / Published: 18 August 2021
(This article belongs to the Special Issue Structural Health Monitoring in Civil Infrastructure)
Rail transit tunnels span long distances, are large-scale structures and pass through complicated geological conditions; thus, the risk of uneven settlement cannot be ignored. To address this issue, a method for diagnosing the uneven settlement of regional railway tunnels based on the spatial correlation of high-density strain measurement points is proposed in this study. First, with the distributed optical fiber sensing technology, a method for determining the intervals of strain measurement points with strong spatial correlations is proposed based on a support vector machine. Second, combined with the statistical analysis of the influence range of the uneven settlement of a tunnel, an algorithm for diagnosing the uneven settlement of regional railway tunnels based on the spatial correlation of high-density strain measurement points is proposed. Finally, the effectiveness of the proposed method is verified by numerical simulation and actual tunnel data. View Full-Text
Keywords: rail transit tunnel; structural uneven settlement; distributed optical fiber sensing technique; structural condition assessment; support vector machine rail transit tunnel; structural uneven settlement; distributed optical fiber sensing technique; structural condition assessment; support vector machine
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MDPI and ACS Style

Li, H.; Xu, Q.; Liu, Y. Method for Diagnosing the Uneven Settlement of a Rail Transit Tunnel Based on the Spatial Correlation of High-Density Strain Measurement Points. Sustainability 2021, 13, 9245. https://doi.org/10.3390/su13169245

AMA Style

Li H, Xu Q, Liu Y. Method for Diagnosing the Uneven Settlement of a Rail Transit Tunnel Based on the Spatial Correlation of High-Density Strain Measurement Points. Sustainability. 2021; 13(16):9245. https://doi.org/10.3390/su13169245

Chicago/Turabian Style

Li, Hu, Qianen Xu, and Yang Liu. 2021. "Method for Diagnosing the Uneven Settlement of a Rail Transit Tunnel Based on the Spatial Correlation of High-Density Strain Measurement Points" Sustainability 13, no. 16: 9245. https://doi.org/10.3390/su13169245

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