Concrete stress redundancy monitoring system and stress calculation method based on strain gauge group and reinforcement meter

The invention provides a concrete stress redundancy monitoring system and a stress calculation method based on a strain gauge group and a reinforcement meter, the strain gauge group comprises a strain gauge, the strain gauge is installed on a support through a support rod, and the strain gauge is connected with a micro-power consumption data recorder through a signal line; the stress-free meter comprises a strain gauge, the strain gauge is suspended and fixed in the double-layer sleeve through a plurality of steel wires, an interlayer of the double-layer sleeve is filled with a foamed plastic liner, and the strain gauge of the stress-free meter is connected with the micro-power consumption data recorder through a signal line; the steel bar meter is connected with the micro-power consumption data recorder through a signal line; and the micro-power consumption data recorder is connected with the monitoring management platform through wired or wireless communication. Multi-means complementation of concrete stres