Cable force identification method for reconstructing stay cable boundary response based on limited measuring points

The invention belongs to the technical field of bridge structure health monitoring data analysis, and provides a cable force identification method based on limited measuring point reconstruction inhaul cable boundary response. A stay cable force identification method considering boundary disturbance...

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Hauptverfasser: ZHANG SONGHAN, LUO LANYING, DU YANLIANG, ITINWA
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention belongs to the technical field of bridge structure health monitoring data analysis, and provides a cable force identification method based on limited measuring point reconstruction inhaul cable boundary response. A stay cable force identification method considering boundary disturbance needs to measure cable-beam response, and an existing monitoring system is limited in main beam measuring point and cannot meet the requirement for measuring beam end response of all stay cables. The method comprises the following steps: interpolating a main beam deflection curve equation by using a cubic spline function according to a main beam limited measurement point response through a conversion relation between acceleration response and displacement response, reconstructing the acceleration response of each inhaul cable beam end, then calculating a cable-beam transmissibility function, and estimating cable force and bending rigidity by using a joint recognition algorithm. The cable-stayed bridge cable force