The invention discloses a defective cable and support
angular displacement progressive identification method based on mixed monitoring of temperature change. The method comprises the following steps of: on the basis of mixed monitoring, judging whether a mechanical calculation
reference model of a cable structure is required to be updated by monitoring the temperature of the cable structure, environment temperature and the health state of an evaluated object, and thus obtaining the mechanical calculation
reference model of the cable structure, into which the temperature of the cable structure and the environment temperature are recorded; and on the basis of the mechanical calculation
reference model, acquiring a unit damage monitored amount unit change matrix by calculation. A non-inferior solution of the current nominal damage vector of the evaluated object is obtained by calculation according to an approximately
linear relationship between the current value vector of monitored amount, the current initial value vector of the monitored amount, the unit damage monitored amount unit change matrix, a unit damage or unit
angular displacement vector and the to-be-obtained current nominal damage vector of the evaluated object, so a damaged cable, a loosened cable and support
angular displacement can be quickly identified when the temperature change occurs.