Method for evaluating concrete foundation strength of vibration equipment in nuclear power plant irradiation environment

The invention discloses a method for evaluating concrete foundation strength of vibration equipment in a nuclear power plant irradiation environment. The method comprises the following steps of: S1, symmetrically selecting eight detection areas on the concrete foundation of the equipment along the circumferential direction of an equipment base; S2, measuring rebounding values of the concrete in the detection areas, wherein the axis of a rebounding instrument is always perpendicular to the concrete detection surface of the structure or component and the same measuring point is only allowed to fire once, measuring 16 rebounding values for each detection area, removing 3 maximum values and 3 minimum values, recording the remaining 10 rebounding values as Ri, i=1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and calculating the arithmetic mean; S3, calculating a concrete strength conversion value Fm of the Nm detection area, taking a concrete average carbonization depth value dm of the vibration equipmentbase in the nuclear power