Bridge deformation detection method and system

Abstract

The invention relates to the technical field of bridge deformation detection, and discloses a bridge deformation detection method and system, and the method comprises the steps: carrying out the pre-analysis of a bridge, and arranging deformation monitoring points; laying an image acquisition device, and matching laying reference points to form a reference plane; acquiring a bridge image as a basic image when no pedestrian or vehicle runs on the bridge, and measuring and calculating to obtain space coordinates of an image acquisition device, a deformation monitoring point and a reference point; when pedestrians or vehicles run on the bridge, performing image acquisition on the bridge according to a preset frequency to obtain a deformation image; establishing a three-dimensional deformationcoordinate system O-XYZ to obtain three-dimensional deformation values of the deformation monitoring points, and summarizing the three-dimensional deformation values to obtain a dynamic deformation curve graph of the deformation monitoring points in X, Y and Z directions. The dynamic deformation of the bridge can be monitored in real time, static deformation can be measured, potential risks are effectively warned, the operation is easy, the cost is low, and wide application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of bridge deformation detection, in particular to a bridge deformation detection method and system. Background technique [0002] With the continuous progress and development of modern economy and technology, my country has also spent a lot of financial and material resources on the construction of bridges. For bridges in the operation period, various diseases such as damage and deformation will appear as time goes by. Timely discovery and disposal are likely to cause immeasurable consequences. Generally speaking, bridge structures during service will inevitably suffer local or overall damage under the influence of factors such as external environment, working loads and extreme loads. In order to ensure the safety of the structure Therefore, it is particularly necessary and urgent to use effective means for damage identification and safety assessment of bridge structures in service. [0003] Although there ar...

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Problems solved by technology

[0004] Among them, the conventional geodetic method represented by the level, theodolite, and total station is still an important means of bridge deformation monitoring, and the measurement accuracy is high. The automatic tracking total station and strain gauge in the direction of the physical sensor are also commonly used to monitor bridge deformation. However, these monitoring methods have a large workload and cannot monitor the dynamic deformation of the bridge. Some other existing monitoring methods only study the monitoring of bridge deformation under static loads, and some monitoring distances are too short to monitor the bridge as a whole. Deformation, some cannot realize the synchronization of bridge monitoring and data processing

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