Continuous flow automobile comfort evaluation method based on axle coupling

The invention discloses a continuous flow automobile comfort evaluation method based on axle coupling. The method comprises the following steps: 1, establishing a bridge finite element model and acquiring random unevenness of a bridge floor; 2, collecting continuous flow motorcade information; 3, establishing a multi-lane total axle coupling matrix under the action of traffic flow when the motorcade gets on the axle; 4, according to the total vehicle acceleration matrix on the multiple lanes under the action of the traffic flow when the vehicle fleet goes on the bridge, an acceleration time-history curve of the vehicle fleet traffic flow on the bridge is drawn; 5, establishing a multi-lane total axle coupling matrix of the motorcade under the action of the traffic flow at the next moment; 6, drawing an acceleration time history curve of the traffic flow of the motorcade at the next moment according to the total vehicle acceleration matrix on the multiple lanes under the action of the traffic flow of the motor