Inhaul cable assembly based on shape memory alloy

The utility model discloses an inhaul cable assembly based on shape memory alloy. The stay cable comprises a stay cable body, the stay cable body is made of nickel-titanium-iron shape memory alloy, the stay cable body is in a spring shape, the initial state of the stay cable body is a compressed state, and the inner diameter of the stay cable body is slightly larger than the diameter of an existing bridge prestress steel strand (or parallel steel wire) stay cable, so that the stay cable body is arranged on the bridge prestress steel strand (or parallel steel wire) stay cable in a sleeving mode; the inhaul cable fixing devices are used for fixing the two ends of the inhaul cables to the bridge prestress steel strand (or parallel steel wires) stay cables respectively; wherein two ends of theinhaul cable are respectively connected with an electric wire. The utility model has the advantage that after the bridge prestressed steel strand (or parallel steel wire) stay cable is loosened, thestress loss of the bridge