Monitoring method for bridge safety real-time evaluation under vehicle congestion condition

The invention relates to a monitoring method for bridge safety real-time evaluation under a vehicle congestion condition, which comprises the following steps of: acquiring running vehicle information through a video snapshot system mounted on a bridge floor, and establishing a vehicle congestion model to judge the congestion state of a vehicle. When the bridge floor is judged to be congested, on one hand, vehicle information at the congested moment is input into a bridge finite element model by combining a vehicle dynamic weighing system to calculate theoretical deflection and a strain value; and on the other hand, the dynamic deflection and dynamic strain value of the bridge at the congestion moment is obtained based on the bridge monitoring equipment. And comparing the deflection and strain values calculated by the model with actual monitoring values, and if the monitoring values exceed theoretical calculation values, determining that the bridge has potential damage. According to the invention, bridge floor