Optimization of Metro Tunnel Maintenance Strategy Based on Improved Particle Swarm Algorithm
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 1
Abstract
[Objective] Maintenance strategy is the key factor influencing the lifetime service performance and maintenance cost of metro tunnel. Therefore, it is essential to develop more suitable optimization algorithms for maintenance strategies. [Method] A tunnel service performance degradation model is established based on Gamma process, and parametric assumptions are made for inspection schedule and maintenance activities. The improved particle swarm optimization (PSO) algorithm is proposed to solve the stochastic problem in maintenance strategy optimization mathematical model, and its effectiveness is verified through a comparison with gridded enumeration algorithm. The impact of different preventive maintenance thresholds and initial inspection time intervals on maintenance costs is analyzed. [Result & Conclusion] The improved PSO algorithm enhances the computational efficiency of optimizing metro tunnel maintenance strategies. Compared to the initial inspection time interval, the lifetime maintenance cost of metro tunnel is more sensitive to preventive maintenance threshold.
Authors and Affiliations
Yining GU, Qing AI, Yong YUAN
Keywords
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- EP ID EP727691
- DOI 10.16037/j.1007-869x.2024.01.008
- Views 61
- Downloads 0
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