Performance test method for large bridges in high-speed rail based on health monitoring data

Abstract

The invention discloses a method for evaluating the performance of large high-speed railway bridges based on health monitoring data, and relates to the field of bridge engineering detection, comprising the following steps: optimizing and arranging an automated sensor hardware equipment system on the high-speed railway bridge, realizing automatic data collection, and analyzing the measured data After processing such as noise reduction, time-domain statistical processing, and frequency-domain processing in sequence, the bridge operation safety performance is judged based on the health monitoring data. The method of the present invention meets the actual needs of high-speed railway bridge detection and evaluation, can timely and accurately reflect the safety of high-speed railway bridge operation, and provides an important guarantee for the safe operation of high-speed trains; Unification is convenient for the practical application of the system in bridge managers; on the basis of the evaluation conclusion of this method, it also puts forward targeted bridge maintenance and repair decision-making suggestions, which is convenient for timely maintenance and dynamic maintenance, and greatly improves the efficiency of bridge maintenance.

Description

technical field [0001] The invention relates to the field of bridge engineering detection, in particular to a method for testing the performance of large high-speed rail bridges based on health monitoring data. Background technique [0002] With the continuous development of super-large bridges, the requirements for the inspection and evaluation of corresponding bridges in operation are getting higher and higher, and the traditional methods based on manual inspection and evaluation are difficult to meet the needs of super-large bridge inspection and evaluation. In this context, the bridge structural health monitoring system has also been continuously developed, and has become one of the research hotspots in the field of structures. The bridge health monitoring system conducts real-time and automatic dynamic monitoring of the surrounding environmental parameters and various dynamic responses of the bridge structure by setting various sensors and signal transmission equipment ...

AI Technical Summary

Problems solved by technology

[0024] The purpose of the present invention is to provide a performance testing method for large high-speed railway bridges based on health monitoring data, aiming at the problems of "night skylight" manual detection, low detection and evaluation efficiency, and weak accuracy in the current detection and evaluation of large high-speed railway bridges, as well as the current In the existing large-scale bridge health monitoring system, problems such as damage identification and bridge performance evaluation are difficult due to the limited number of measuring points and the influence of test noise

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