System and method for measuring bridge deflection based on close-range photographic measurement

Abstract

The invention discloses a system and method for measuring bridge deflection based on close-range photographic measurement. According to the system and method for measuring the bridge deflection based on the close-range photographic measurement, the problem that in a special environment, a contact type displacement measuring instrument can not be installed is solved. The system for measuring the bridge deflection based on the close-range photographic measurement comprises a total station, two single-lens light reflection cameras, an industrial control computer, 4-5 control points arranged on piers, 6-8 control points arranged on uprights and three target points. The measuring distance of the total station is 5m-50m and the shooting distance of the two single-lens light reflection cameras is 3m-15m; the three target points are located on supporting point portions and in the middle of each stride of the bridge, the control points arranged on the piers are arranged on two piers, and the control points arranged on the uprights are arranged below and in front of the three target points. The distance between the abscissa and the ordinate of every two adjacent control points of the control points arranged on the piers and the control points arranged on the uprights is 3m-10m. The industrial control computer and the two single-lens light reflection cameras are connected through signal lines. The invention further provides the measuring method.

Description

technical field [0001] The invention relates to a measurement system and a measurement method, more precisely, the invention relates to a bridge deflection measurement system and method based on close-range photogrammetry. Background technique [0002] Bridge deflection detection is an important task to evaluate the operation status of the bridge according to its structural characteristics and bearing capacity in the static load test. The highway management and maintenance department can effectively prevent the instantaneous partial damage of the bridge by grasping the health status of the existing bridge in real time , collapse and other major accidents. The traditional detection methods of bridge detection in our country usually need to use instruments such as dial gauges and displacement meters for contact measurement work, which has the advantages of simplicity and low cost; When the bridge crosses obstacles such as rivers, rivers, mountain streams, and railways, it is ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem that the contact displacement measuring instrument in the prior art cannot be installed in a special environment, to provide a bridge deflection measurement system based on close-range photogrammetry technology, and to provide a bridge deflection measurement system based on Measuring method of bridge deflection measuring system based on close-range photogrammetry

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