Bridge flexibility and displacement monitoring device and monitoring method

Abstract

The invention discloses a device for monitoring bridge deflection and displacement, including a video collection equipment, a shelter screen opposite to the position of the video collection equipment under the bridge, a level tightening baseline adjacent to the shelter screen between the shelter screen and the video collection equipment, a uniform straight pipe or straight round pole having different colour with the shelter screen disposed on the baseline, an equivalent straight round pole or equivalent straight pipe parallel with and beneath the straight pipe or straight round pole disposed on the shelter screen; a computer communicated with the video collection equipment and for processing the data, and a light source. Also disclosed is a monitoring method for collecting image data of straight pipe or straight round pole and equivalent straight round pole or equivalent straight pipe using camera video collection equipment, and calculating vertical and / or longitudinal displacement after processing by computer. The method and apparatus which have high measurement precision can be influenced little by environment factor.

Description

technical field [0001] The invention belongs to the field of bridges, and specifically relates to a bridge deflection and displacement monitoring device and monitoring method, which are used to detect and monitor the vertical and longitudinal displacements of the bridge. Background technique [0002] As an important part of the traffic artery, bridges play an extremely important role in national economic construction and social development. Due to the influence of environment, use, aging and other factors, bridges often have vertical and directional deformation (commonly referred to as deflection), as well as longitudinal deformation (commonly referred to as displacement), which are important manifestations of bridge health , if the deformation reaches a certain level, the bridge will collapse. [0003] Therefore, bridge deflection / displacement detection and monitoring technology has long been valued by people. It aims to capture bridge deflection / displacement information i...

AI Technical Summary

Problems solved by technology

It can be seen that although the photoelectric method takes advantage of some advantages of video acquisition technology, such as lower and lower costs, less influence by ambient temperature, and the light-collecting characteristics of the laser beam, but due to the need to collect the laser beam spot, the laser head and The distance of the receiving device is generally far away, and the positioning of the laser beam spot is highly required, so the detection and monitoring effect is easily affected by factors such as weather, bridge span, bridge disturbance, etc.

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