The invention discloses an event-driven
urban rail transit network congestion propagation
simulation method, and relates to the technical field of
urban rail transit operation analysis and
traffic system simulation calculation. According to the method, a multi-layer
network model which is split according to lines and directions is constructed based on a line space structure and an operation timetable,
train arrival is used as a discrete event, an
event list is established, and
simulation is propelled according to an event
time sequence. Accumulatively generating time-related passenger arrival quantity between two adjacent
train arrival events to form a node
queue; and sequentially executing passenger getting-off, passenger getting-on according to first-arrival first-service and remaining transport capacity constraint, and vehicle-mounted capacity updating at each arrival event, calculating
station dwell
time based on the getting-on and getting-off amount and the node crowdedness degree, and calculating and generating a subsequent arrival event. The method outputs the node queuing length and the
network congestion index, and can be used for evaluating the congestion propagation and
recovery process under different demand fluctuations and operation strategies.