Method for calculating seismic response of cable-stayed bridge tower

The invention relates to the field of seismic response calculation, and discloses a method for calculating seismic response of a cable-stayed bridge tower, which comprises the following steps of: establishing a mechanical model comprising seven degrees of freedom of a cable-stayed bridge; obtaining a total stiffness matrix K0 according to the node external force component value corresponding to the ith row when the node displacement component corresponding to the jth column where the kij is located is equal to 1 and the rest node displacement components are all zero; obtaining a structural mass matrix M0 corresponding to the total stiffness matrix K0 according to the mechanical model; obtaining a vibration angular frequency omega according to a formula | K0-omega2M0 | = 0, obtaining a vibration mode vector according to the formula, simplifying an expression of tower bottom shear force according to the vibration angular frequency and the vibration mode vector, and obtaining a relationship between a tower beam