Dynamic Deflection Monitoring Project for Expressway Reconstruction and Expansion Bridges

In large structure monitoring scenarios such as expressway reconstruction and expansion projects, long-span bridges, tunnel groups and dams, the monitoring area is wide, measurement points are scattered, and site conditions are complex, so a single station can hardly cover the entire monitoring area. Such projects require not only acquiring bridge displacement, dynamic deflection and vibration response data, but also achieving data coordination and result consistency among multiple measurement points under long-distance deployment conditions.

To meet the needs of long-distance and large-scale structural monitoring, the Haytham online visual tracker can adopt a flexible series configuration. Through cooperative deployment of front and rear cameras, combined with synchronized triggering and resetting of multiple measurement heads, the system achieves coordinated monitoring of multiple measurement points in multiple directions, suitable for bridge monitoring projects with long spans, many measurement points and scattered monitoring areas.

In a dynamic deflection monitoring project for a bridge on an expressway under reconstruction and expansion, the system adopted the flexible series solution to perform multi-point and multi-directional displacement monitoring of key bridge measurement points. Through the non-contact visual measurement method, the system continuously tracks changes of target measurement points and obtains dynamic deflection and displacement response data of the bridge under construction, operation or dynamic loads.

Meanwhile, the system performs automatic initial calibration based on the attitude fusion algorithm, which improves the consistency of measurement results among multiple systems and reduces the influence of long-distance deployment and station attitude changes on monitoring data. For expressway reconstruction and expansion bridge monitoring, long-span bridge health monitoring and long-term online monitoring projects for large structures, the flexible series vision measurement solutioncan better adapt to complex sites and provide support for multi-point coordinated monitoring and remote data management.