. Then, based on the harmonic response analysis of theFE method, the force transmitted to the bridge are imported to the FEmodel, from which the vibration response of the long-span steel trusscable-stayed bridge can be obtained.In the statistical energy model, the main energy is considered to beconcentrated in the steel beam portion, regardless of the energy absorbed by the stay cable. The model has a total of 20,997 nodes and10,656 plate subsystems. The SEA model is shown in Fig