Monitoring Method and System for Corrugated Steel Plate Support Structures Based on Quasi-Distributed Optical Fiber

Abstract

This invention proposes a monitoring method and system for corrugated steel plate support structures based on quasi-distributed optical fibers, belonging to the field of support structure monitoring technology. Measuring points are arranged along the arch axis of the corrugated steel plate support structure, and corresponding fiber optic strain and temperature sensors are installed, connected in series to form peak and trough strain sensing links and waist temperature sensing links. Temperature sensing data is used to compensate for the strain sensing data, obtaining the compensated peak and trough strain values ​​at each measuring point. Axial force and bending moment at the structural measuring points are calculated to obtain tangential and radial displacements. Multi-source monitoring data are input into a trained spatiotemporal fusion model to obtain predicted values ​​of structural strain, internal force, and displacement for future periods. Based on real-time monitoring data and predicted data, a comprehensive safety status report is generated. This invention improves the accuracy, proactivity, and reliability of structural safety monitoring by integrating quasi-distributed optical fiber sensing, temperature-compensated deformation inversion, and spatiotemporal intelligent prediction.

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