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.