Visualization method and device for long-term monitoring of slippage of shear key interface of steel-concrete composite structure

The invention discloses a visualization method and device for long-term monitoring of shear key interface slippage of a steel-concrete composite structure, and the method comprises the steps: dividing a shear key monitoring region into a plurality of grids, and taking each grid as a damage monitoring point; according to the stress waves received by all propagation paths of the sensor array, the guided wave speeds of the stress waves in all directions of the shear keys in the concrete slab are obtained; calculating a time coefficient of the monitoring point in each propagation path based on the guided wave velocity; according to the stress waves received by each propagation path in the health state and the monitoring state of the shear key, the damage sensitivity index of the monitoring point in each propagation path is calculated; according to the time coefficients and the damage sensitivity indexes of all the propagation paths, the damage probability of the monitoring points is calculated; the damage probabi