The signal system is the key content of rail transits, and its equipment status evaluation helps to find the hazards of the system in time and ensure the function of the system. In this paper, a comprehensive evaluation indicator system and evaluation model of signal equipment state are established, and a signal equipment state evaluation method based on fuzzy synthetic evaluation is proposed. The applicability of the method is verified by combining with the case analysis. It is expected to provide reference for the ideas and methods in the whole life cycle management process of rail transits.
Metros are very popular in metropolises. Considering the undesirable interaction of different metro lines under emergency, a method for constructing the metro interaction network (MIN) is proposed. The Shanghai Metro interaction networks (SMINs) including the network currently in operation (SMINop) and its extension (SMINext) are analyzed. The results suggest that compared with SMINop, the efficiency of SMINext falls by 6.297%, but removing a vertex has less impact on its efficiency. SMINext performs better than SMINop in attack-based tests, with larger efficiency retention rates in degree-based attack and betweenness-based attack. Maintaining a high emergency handling ability is vital to the network operation of metros.
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