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Abstract

The present disclosure relates to a method and system for quantitative damage monitoring of a reinforced concrete structure and belongs to the technical field of civil engineering. The method includes: obtaining an optical fiber strain signal and cross-section design parameters of a longitudinal tensile reinforcement of a reinforced concrete beam (101), where the cross-section design parameters include geometric parameters and material performance parameters; the geometric parameters include a cross-section width, a cross-section height, an equivalent cross-section height, a protective layer thickness, and a reinforcement area; establishing a cross-section analysis model based on the cross-section design parameters (102), where the cross-section analysis model includes a concrete damage stress-strain relationship model and a reinforcement damage stress-strain relationship model; and inputting the optical fiber strain signal to the cross-section analysis model to obtain a damage indicator and a bending moment-curvature curve of each cross-section (103).

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