Bridge cable abnormity identification and positioning method insensitive to sensor faults

The invention discloses a method for identifying and positioning abnormity of a bridge cable insensitive to sensor faults. The method comprises the following steps: (1) extracting a cable force feature vector of a group cable based on monitoring data; (2) establishing a stay cable online evaluation model based on cable force feature vector local variability detection; and (3) isolating abnormal components in the cable force feature vector. The method comprises the following steps: constructing a group cable force feature vector reflecting vehicle-induced cable force stability correlation among different inhaul cables; a bridge cable abnormity identification method based on group cable force feature vector variability detection is established, and online monitoring of the stay cable is realized. The abnormal cable force component-based isolation method can accurately position the abnormal cable. And finally, the method is not sensitive to sensor faults, and under the condition that a certain cable force sensor