Bridge damage diagnosis method based on axle coupling system

Abstract

The invention relates to the field of bridge engineering detection, specifically to a bridge damage diagnosis method based on an axle coupling system. The bridge damage diagnosis method includes the following specific steps: a. two detection vehicles depart from different positions of a bridge towards a 1# abutment direction to pass the bridge, and a signal acquisition subsystem synchronously acquires vertical acceleration response in the process of trolleys passing the bridge each time; b. the two detection vehicles depart from different positions of the bridge towards a 0# abutment direction to pass the bridge, and the signal acquisition subsystem synchronous acquires vertical acceleration response in the process of the trolleys passing the bridge each time; and c. using the vertical acceleration response of the trolleys measured in Step a and Step b to perform secondary integration processing on time t separately, thereby obtaining approximate vertical displacement response of the corresponding trolleys. Through the bridge damage diagnosis method based on the axle coupling system, detection signals can be obtained on the bridge to be detected through the detection vehicles, damage information of the bridge can be obtained through corresponding processing conversion according to the detection signals, the approximate position of bridge damage does not need to be known in advance, the operation is simple and easy, and the efficiency is high.

Description

technical field [0001] The invention relates to the field of bridge engineering detection, in particular 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 of the actual structure...

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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