Equivalent hinged girder interpolation model establishment method for vibration method-based cable-supported bridge cable group force measurement

The invention provides an equivalent hinged girder interpolation model establishment method for vibration method-based cable-supported bridge cable group force measurement and belongs to the vibrationmethod cable force measurement technical field. The invention aims to eliminate limitations brought about by a condition that an existing statistical regression model method or equivalent hinged girder method is only applicable to the calibration of a single cable. According to the method of the invention, an interpolation function is constructed to perform interpolation on the basis of the length of the equivalent hinged girders of a calibrated cable model so as to obtain an un-calibrated cable model. With the method adopted, cables in a cable-supported bridge cable group are calibrated as little as possible, so that a vibration force measurement model suitable for the cable group can be established. Based on a semi-analytical semi-statistical modeling idea, the method of the invention fully uses field measured