The transverse deformation monitoring of shield tunnels plays an important role in their long-term operation. Due to limited maintenance budget, monitoring sensors are unable to cover all sections of the shield tunnels. Therefore, it is necessary to optimize the deployment scheme to maximize the total information obtained by the sensors. This article optimized the placement scheme by minimizing the correlation between monitoring data of adjacent cross-sections. Finite element method and Monte Carlo simulation were used to obtain the probability distribution of transverse deformation under uncertain vertical loads and lateral pressure coefficients. Pearson correlation coefficient and mutual information were adopted as indicators to quantitatively characterize the deformation correlation between shield tunnel rings, and the optimal placement distance was obtained. The effects of load uncertainty and inter-ring shear stiffness on optimal placement distance were discussed. The conclusion of this article can provide reference for the optimization placement of deformation monitoring sections for shield tunnels.
Shi Jingkang
,
Huang Hongwei
,
Guan Zhenchang
,
Li Zhanglin
. Monitoring Section Layout of Shield Tunnel Based on Correlation Coefficient and Common Information[J]. Chinese Journal of Underground Space and Engineering, 2025
, 21(S2)
: 878
-884
.
DOI: 10.20174/j.JUSE.2025.S2.41
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