Bridge vibration acceleration and inherent frequency on-line and real-time monitoring device, terminal and method

Abstract

The invention relates to a bridge vibration acceleration and inherent frequency on-line and real-time monitoring device, terminal and method. An acceleration vibration pickup device is used for sending a signal to a server by a dynamic data acquisition device, the server is used for performing Fourier transform on the signal to obtain a time travel curve of a real-time spectrum signal of vibration acceleration of a bridge structure and an inherent frequency of the bridge structure, performing counting analysis on a dynamic parameter of the bridge structure and calculating an average value and standard difference of the signal so as to determine a safety range of the dynamic parameter of a monitoring system, and warning information is sent to a network terminal when the bridge inherent frequency and acceleration signal value exceeds the safety range of the dynamic parameter. By the bridge vibration acceleration and inherent frequency on-line and real-time monitoring device, on-line and real-time monitoring and early warning can be performed on vibration acceleration and the inherent frequency of a bridge, the damage to the bridge structure can be accurately identified, the measurement requirement of the complicated bridge structure can be met, traffic on the bridge is not needed to be enclosed during measurement, and a measurement result is accurate.

Description

technical field [0001] The invention relates to the fields of bridge safety monitoring and damage identification, in particular to a bridge vibration acceleration and natural frequency online real-time monitoring device, terminal and method. Background technique [0002] Over the past 20 years, my country's highway and municipal construction projects have developed vigorously. The total mileage of domestic highways and expressways ranks among the top in the world. A large number of long-span and multi-span large bridges that have been built or will be built are complex in technology and high in technology. my country's bridge design and construction technology has reached the world's advanced level. With the passage of time, the aging of materials and the degradation of the overall performance of the bridge structure have become increasingly prominent; in addition, during the use of the bridge, a large number of traffic loads (especially overweight vehicles), as well as the c...

AI Technical Summary

Problems solved by technology

The test results under the status quo inspection process cannot be reflected in real time to the bridge management and maintenance parties, and the information lags behind, which cannot serve as a real-time early warning function for bridge structural damage

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