Alternative route set generation and route planning method and device for bus network

The invention provides an alternative route set generation and overload optimization method and device for a bus network, and relates to the technical field of intelligent transportation, and the method comprises the steps: obtaining an original bus network topology network; determining the bus full-load rate of the historical road section according to the original bus network topology network, and generating a full-connection bus network topology network according to the original bus network topology network; determining an overload road section and an alternative station set corresponding tothe overload road section according to the bus full load rate of the historical road section, and generating a plurality of newly added bus routes in the full-connection bus network topology networkaccording to the alternative station set; updating the original public transport network topology network according to the plurality of newly added public transport lines, and re-determining the public transport full load rate