Evaluation method for running service performance of expansion device of highway bridge based on driving performance

Abstract

The invention is applicable to the field of highway bridge detection. If the bridge support or the expansion device is damaged, it can cause the dislocation of the expansion joint, and under the excitation of the concave-convex expansion joint, it can cause the vibration response of the vehicle. The invention discloses a method for evaluating the service performance of a road bridge telescopic device based on the driving performance. The method includes: defining a classification evaluation method for the running performance and a calculation method for the running degradation rate; determining the running performance according to the driving acceleration response signal, Determine the walking performance deterioration rate based on the measured current value of the walking performance and the initial detection value; and output an inspection and evaluation report based on the graded evaluation results. Through the method of regularly tracking and monitoring the change of the degradation rate of the driving performance, the early damage of the running performance of the evaluated object is diagnosed; while the detection efficiency is improved, the recognition of the early damage of the road bridge expansion device and the service status of the bearing is improved. and check the quality of the assessment.

Description

technical field [0001] The invention belongs to the field of highway and bridge detection, and relates to a method for evaluating the service performance of a highway and bridge telescopic device. Background technique [0002] Highway bridge bearings and expansion devices are important structures in highway bridges. Maintenance departments are usually required to conduct periodic inspections of bearings and expansion devices, to systematically grasp their technical status, to detect defects and related environmental changes in time, and to inspect them accordingly. Results The function and technical status of the support and telescopic device were evaluated, and the corresponding maintenance countermeasures were formulated scientifically. [0003] Under operating conditions, with the extension of the service period, highway bridges inevitably have some deterioration or disease. The deterioration of the expansion device is mainly manifested in the relative dislocation of the ...

AI Technical Summary

Problems solved by technology

In order to overcome the shortcomings of the above-mentioned existing manual inspection methods, the present invention provides a method for evaluating the service performance of road bridge expansion devices based on the driving performance, which can realize the rapid detection and evaluation of the degradation of the driving function of the active road bridge expansion devices

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