Reach on Fault Tree Analysis of Train Derailment in Urban Rail Transit
Wang Ming-yan（汪明艳）, WANG Hong（汪泓）, LIU Zhi-gang（刘志钢）

Abstract
The train derailment is one of the major accidents in rail transit safety system. The reach uses collision accident of rail transit train in Tokyo and Shanghai as the case. Firstly, it present fishbone diagram to qualitatively analysis main factors in derailment. Then it set up a derailment accident tree model with the qualitative and quantitative analysis of. The results show that illegal operations and unfamiliar operation are the most dangerous causes in train derailment event. Meanwhile, pre-construction design of site also has important impact on security of the track derailment. Finally, combined with the present situation of Shanghai urban rail traffic safety management, prevent the risk management of derailment accidents prevention countermeasures are put forward. Keywords: fault tree analysis; fishbone diagram; urban rail transit; derailment accident

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