Concrete damage positioning method based on piezoelectric impedance data probability imaging

The invention belongs to the related technical field of concrete structure health monitoring, and discloses a piezoelectric impedance data probability imaging-based concrete damage positioning method, which comprises the following steps of: (1) arranging a plurality of piezoelectric sensors on a concrete structure, and collecting admittance signals of each piezoelectric sensor under different working conditions, further obtaining conductance values before and after concrete damage; (2) calculating a damage index of the RMSDk by using the obtained conductance value, and establishing a regression model of the damage index RMSDk and the damage distance so as to calculate a predicted value of the concrete damage distance under each working condition; and (3) taking the damage distance predicted value and the regression fitting coefficient as basic parameters of probability distribution, establishing a probability distribution model of a single sensor, and obtaining a visual image of concrete damage positioning th