Research on Controllability of Risk Chain Network in Urban Rail Transit System

Abstract

In reality, the risk in urban rail transit system usually happens. In this paper, we construct the risk chain network in urban rail transit system, where the different factors are considered in detail. Moreover, in order to describe the characteristic of the risk chain network, the propagation risk is proposed. Based on these, the controllability of risk chain network is calculated in four kinds of systems in urban rail transit system. In addition, we analyze the key node, which has a serious impact on the controllability. Our paper may be useful to control the risk in urban rail transit system and improve the safety of urban rail transit.