Sheath external acoustic emission monitoring method for multi-source damage signal of cable-stayed bridge cable

The invention relates to a sheath external acoustic emission monitoring method for multi-source damage signals of an inhaul cable of a cable-stayed bridge, and effectively solves the problem that an acoustic emission sensor cannot be accurately mounted when the existing method is used for monitoring the damage of the inhaul cable of the bridge. According to the technical scheme, the method comprises the following steps: obtaining an acoustic transmission coefficient of a cable sheath and a cable circumferential attenuation rule through an acoustic emission test, and constructing a cable circumferential attenuation model according to the reversing attenuation rule of the cable, thereby obtaining an accurate monitoring range of an acoustic emission sensor according to the cable circumferential attenuation model; according to the scheme, corresponding acoustic emission sensor arrangement modes can be provided according to different damage signals of the zipper, the method has the advantages of refinement, quanti