Bridge pier deformation testing device and testing method based on image-digital interaction technology

Abstract

The invention discloses a bridge pier deformation testing device based on the image-digital interaction technology. The device comprises a plurality of observation points arranged on the surface of ato-be-tested pier, and a plurality of industrial cameras arranged at different directions of the to-be-tested pier. All the industrial cameras are connected with an image-digital interaction analysisdevice. The invention further discloses a bridge pier deformation testing method based on the image-digital interaction technology. The method comprises the steps of spraying the plurality of observation points on the surface of the to-be-tested pier; arranging the plurality of industrial cameras at different directions of the to-be-tested pier; loading the to-be-tested pier according to the testworking condition; continuously recording the loading process of the to-be-tested pier through the industrial cameras and sending the recorded information to the image-digital interaction analysis device in real time; analyzing the movement tracks of the observation points by the image-digital interaction analysis device to obtain the dynamic process of the three-dimensional deformation of the to-be-tested pier. According to the invention, by means of the testing device and the testing method, the deformation of the pier can be comprehensively, three-dimensionally, accurately, reliably, continuously and visually reappeared in the non-contact manner.

Description

Technical field [0001] The invention relates to the field of bridge engineering, in particular to a bridge pier deformation testing device and a testing method based on image-digital interactive technology. Background technique [0002] Bridge pier seismic test is one of the important methods to study the ductility, seismic performance, and design methods of bridge piers. During the test, how to accurately test the pier deformation (especially the whole process deformation of all piers) is important for experimental research. content. [0003] Traditional deformation testing devices mostly use tensile displacement sensors, dial gauges or laser displacement sensors. These test methods often require close installation of test brackets, which often interfere with the observation and recording of test phenomena. Deformation tests require a data acquisition system. In the case of small component sizes, the test sensors or meters cannot be implemented according to the test plan, and the...

AI Technical Summary

Problems solved by technology

These test methods often require close-range installation of test brackets, which often interfere with the observation and recording of test phenomena. The deformation test requires a data acquisition system. In the case of small component sizes, the test sensor or instrument cannot be implemented according to the test plan. At the same time, the test device is fixed. The method on the surface of the test piece often causes multiple local damages of the component, accelerates the cracking and failure process of the component, seriously affects the test accuracy of the local stress and strain of the concrete, and causes the test result to be inaccurate or even distorted

At the same time, the data collection points of the traditional test method are limited, and only the movement of certain points can be collected, which cannot reflect the continuous deformation of the pier body as a whole, and it is difficult to collect deformations such as space torsion of the pier body

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