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
Related Articles
- EP ID EP727691
- DOI 10.16037/j.1007-869x.2024.01.008
- Views 92
- Downloads 0
Research and Application of City (Suburban) Railway Post-station Fully Automatic Turn-back Method
Objective CTCS2+ATO (Chinese Train Control System Level 2 + Automatic Train Operation) system can meet the requirements for cross-line operation between city (suburban) railway and national mainline and intercity railway...
Research on Maintenance Process Technology for Rail Vehicle Carbody Surface Quality
Objective After manually polishing the surface of railway vehicle carbodies and subsequently repairing paint defects, because of uncertainties in the vehicle operating environment and varying degrees of paint deteriorati...
Deformation Law Analysis of Metro Station Deep Foundation Pit Constructed by Cover-Excavation Reverse Method in Sandy Area
Objective Stress deformation characteristics of the main structure in the process of metro station construction by cover-excavation reverse method are relatively complex. The construction mechanics process of the subway...
Span-height Aspect Ratio of Pre-stressed Reinforced Concrete Track Beams for Straddle Monorail with 1 250 mm Gauge and 25 m Span
[Objective] To adapt to the building characteristics of a new-model straddle monorail train, mechanical performance analysis and interface optimization research are conducted on a new type of PRCTB (pre-stressed reinforc...
Disturbance Deformation Influence and Field Measurement Study of Metro Shield Under-passing High Building Foundation
Objective With an increasing number of cases involving metro shield tunneling through or in proximity to high buildings in urban rail transit projects, the shield tunneling method inevitably causes disturbances to the gr...