Method, device and equipment for measuring bridge deflection change

Abstract

The invention discloses a bridge deflection change measuring method, device and equipment. A vertical plane is selected or arranged at any position of the bridge as a measuring plane; at least four positioning pieces containing control point images are arranged in the measuring plane; the control point images in all control pieces are not collinear at the same time; the method includes the steps of measuring the standard coordinates of the control points in the control point images in the positioning pieces under a horizontal coordinate system, placing a laser at any position, enabling laser spots emitted by the laser to fall into the measuring plane, placing a camera at any position, and enabling the measuring plane to be located in a shooting view field of the camera. A mode of combining laser indication with camera short-distance imaging is adopted, so that the problems that long-distance imaging is influenced by the atmospheric environment and measurement precision is influenced by postures of the camera can be avoided; through control point imaging processing, the influence of camera shaking on the measurement can be eliminated, and deflection measurement can be flexibly carried out on bridges on the water surface, canyons and other positions. The method is applied to the technical field of measurement.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a method, device and equipment for measuring bridge deflection changes. Background technique [0002] The deflection of a bridge is the main technical index to measure the bearing capacity and safety of a bridge under gravity. According to the change of its deflection curve, it can be judged whether the bridge is in normal condition, whether it needs to be repaired or stopped, so as to prevent accidents. Therefore, the deflection measurement of the bridge is a big problem related to the safety of the bridge and the smooth transportation, and it has very important significance. Deflection measurements of bridges must be carried out on a regular basis. The high-precision measurement methods of bridge deflection mainly include total station method, deflection meter method and imaging measurement method. The measurement methods of the total station method and the deflection m...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a bridge deflection change measurement method, device and equipment, which are used to overcome the shortcomings of the prior art in the imaging measurement of the bridge deflection, such as the long-distance imaging being affected by the atmospheric environment and the measurement accuracy being affected by the camera's own posture, etc., to realize bridge deflection High-precision imaging during imaging measurements

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