A bridge deflection detection system and detection method

A technology of bridge deflection and detection system, which is applied in the direction of measuring device, elasticity test, machine/structural component test, etc., can solve the problems of high cost, inconvenient operation, low deflection measurement accuracy, etc.

Active Publication Date: 2020-06-26
CHANGAN UNIV
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Problems solved by technology

[0005] In view of the problems existing in the above-mentioned prior art, the object of the present invention is to provide a bridge deflection detection system and method, which solves the problem that multiple CCD cameras or laser rangefinders need to be used in the prior art, and the deflection measurement accuracy is not high. , high cost, inconvenient operation, and poor practicability

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  • A bridge deflection detection system and detection method
  • A bridge deflection detection system and detection method
  • A bridge deflection detection system and detection method

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Embodiment Construction

[0061] Comply with the above-mentioned technical scheme, see figure 1 , the bridge deflection detection system of the present invention includes a plurality of targets 1, an image acquisition device 2, a laser ranging module 3, a deflection calculation module and an operation unit, wherein the image acquisition device 2 and the deflection calculation module are all connected to the operation unit; Both the acquisition device 2 and the laser ranging module 3 are connected to the deflection calculation module.

[0062] Target 1 includes a white background plate on which four black solid circles are set. The bridge deflection detection system of the present invention is used to measure bridge deflection. During specific measurement, a plurality of points to be measured are set on the same side of the bridge to be measured, and one target 1 is set on each point to be measured, and four targets 1 are arranged. The central symmetrical position of the black solid circle coincides wi...

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Abstract

The invention discloses a bridge deflection detection system and detection method. The bridge deflection detection system includes multiple targets, an image acquisition device, a laser ranging module, a deflection calculation module, and an operation unit. The image acquisition device and the deflection calculation module are connected with the operation unit. The image acquisition device and thelaser ranging module are connected with the deflection calculation module. Through horizontal rotation of the image acquisition device and the laser ranging module, the deflection values of multipleto-be-detected points on a large-span bridge can be measured. The problems in the prior art, such as the need for multiple CCD cameras or laser range finders, low accuracy, high cost, operation inconvenience and low practicability, are solved.

Description

technical field [0001] The invention relates to the technical field of bridge monitoring, in particular to a bridge deflection detection system and detection method. Background technique [0002] The deflection of the bridge refers to the magnitude of the longitudinal line displacement of the centroid at a certain cross section of the beam body in the direction perpendicular to the axis. Once the deflection of the bridge exceeds the allowable range, or it cannot return to its original position after being subjected to external forces, it can be judged that the bridge has potential safety hazards. Therefore, the detection of bridge deflection is an important task to evaluate the operation status of the bridge according to its structural characteristics and bearing capacity during the static load test. [0003] Traditional bridge deflection detection methods usually use dial gauges, displacement meters and other instruments for contact measurement. When the bridge crosses riv...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00G01B11/16
Inventor 韩毅李嘉鸣王子青贾大海李然然
Owner CHANGAN UNIV
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