Typical shield tunnel structural defects such as lining cracks, seepage, material degradation, etc., will continue to develop over operation time, and are affected by complex external qualitative factors such as geological conditions. Quantifying the temporal variation patterns of these factors is very difficult, and structural health diagnosis also hindered. Based on this, by quantifying the relative importance of various structural defects at different times, the impact of structural defect development on structural health is indirectly considered. A shield tunnel health diagnosis index variable weight calculation model is established, which includes the importance of diagnosis index variable weight calculation, variable weight model, and fuzzy optimal worst subjective weight calculation method. Solved the problems of strong subjectivity, and cumbersome calculation steps in existing weight calculation methods, laying the foundation for constructing a systematic structural health diagnosis method. The model is used to provide support for the structural health diagnosis of the uplink of Nanning Rail Transit Line 1. The health diagnosis results are consistent with the actual structural health status of the line.
Zheng Huanyu
,
Zhang Wei
,
Huang Zhen
,
Hu Zhaojian
,
Liu Ying
. A Variable Weight Calculation Model for Structural Health Diagnosis Indicators of Shield Tunnels[J]. Chinese Journal of Underground Space and Engineering, 2025
, 21(S1)
: 44
-50
.
DOI: 10.20174/j.JUSE.2025.S1.06
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