A Method for Evaluating Service Smoothness of Expansion Devices for Highway Bridges

Abstract

The invention belongs to the field of highway bridge detection. If an expansion joint deviates to be in a step shape due to support stiffness or expansion device failure, vibration deviation of an expansion device can be caused under traveling excitation. The invention discloses a method for evaluating the service smoothness of a highway bridge expansion device. The method relates to a deviation data acquiring module used for acquiring static deviation and dynamic deviation response signals of the two ends of the expansion joint, a smoothness evaluating module used for defining a smoothness evaluating method and a smoothness deterioration rate calculating method, and a smoothness deterioration course database used for storing the smoothness of an evaluation object in each detection period, a smoothness deterioration rate and an evaluation result. By tracking and monitoring the change of the smoothness deterioration rate of the evaluation object, deterioration and damage of a service status can be diagnosed in the early stage. By the adoption of the method, detection efficiency is improved, and check and assessment reliability is improved.

Description

technical field [0001] The invention belongs to the field of highway and bridge detection, and relates to a method for evaluating the smooth service performance of a bridge expansion device. Background technique [0002] Highway bridge bearings and telescopic devices are important structures in highway bridges, and maintenance departments are usually required to conduct periodic inspections on them, and evaluate their technical conditions based on the inspection results. Under operating conditions, with the extension of the service period, the expansion device will inevitably have some deterioration or disease, mainly manifested as the relative dislocation of the expansion joint; under the coupled excitation of the dislocation expansion joint and the driving, it can cause the vibration response of the driving and the beam body; If the dislocation height difference is too large, it will not only affect the driving safety but also affect the safety and durability of the bridge...

AI Technical Summary

Problems solved by technology

[0005] 3. The inspection efficiency is low and the inspection quality is unstable, and the detection rate of early disease is low;

[0006] 4. Manual inspection will affect road driving and manual recording inspection content is not standardized and complete

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