A Bridge Damage Diagnosis Method Based on Vehicle-bridge Coupling System

Abstract

The invention belongs to the technical field of bridge engineering detection and specifically relates to a bridge damage diagnosis method based on a vehicle-bridge coupling system. The method comprises the following steps: a) two detection vehicles drive from one end of a bridge to the direction of a 1# bridge abutment to pass across a bridge, and a signal acquisition subsystem synchronously collects a vertical acceleration response of each vehicle in the bridge passing process; b) the two detection vehicles drive from the other end of the bridge to the direction of a 0 # bridge abutment to pass across the bridge, and the signal acquisition subsystem synchronously collects vertical acceleration response of each vehicle in the bridge passing process; c) the two vehicles can be dragged by atraction vehicle to pass across the bridge separately, and can also be connected in series or parallel and dragged by the traction vehicle to pass across the bridge simultaneously; and d) through thevertical acceleration responses of the vehicles measured in the step a) or step b), obtaining a vertical displacement response of the corresponding vehicle. The bridge damage diagnosis method, servingas a conventional bridge detection method, has the advantages of being safe and economic and convenient and fast and the like, and can detect bridge damage easily, efficiently and precisely.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering detection, and in particular relates to a bridge damage diagnosis method based on a vehicle-bridge coupling system. Background technique [0002] With the rapid development of the national economy and the continuous deepening of the urbanization process, the country pays more and more attention to the construction of transportation infrastructure. As the "throat" connecting traffic engineering, the importance of bridge structure is self-evident. As an important part of the "lifeline" project, the bridge structure is crucial to normal transportation and disaster prevention and relief, so the requirements for its safety, durability and normal use function are getting higher and higher. But on the one hand, in the construction process of the bridge structure, due to problems such as material inhomogeneity and construction accuracy, there will be deviations in the dynamic characteristics o...

AI Technical Summary

Problems solved by technology

However, in the application of indirect measurement method in actual engineering, many factors such as road surface roughness, axle damping, etc. are difficult to solve, which seriously restricts the application of indirect measurement method in actual engineering.

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