Rotary cable clamp test device and test method

The invention discloses a rotary cable clamp test device and test method, relates to the field of bridge construction, and is used for carrying out a tension test on a test assembly. The test device comprises a right-angled frame which is in the shape of a right triangle and comprises a main cable anchoring seat, a suspender anchoring seat, an inclined strut anchoring seat and a plurality of connecting pipes for connecting the three anchoring seats; a tensioning tool which comprises a main cable tensioning device and a suspender tensioning device, the main cable tensioning device is used for tensioning the main cable and comprises two tensioning parts which are oppositely arranged, the two tensioning parts are fixed to a main cable anchoring base and an inclined strut anchoring base respectively, and the two ends of the main cable penetrate through the two tensioning parts respectively; the suspender tensioning device is used for tensioning the suspender, one end of the suspender tensioning device is fixed to