Method and device for identifying equivalent physical stiffness and damping matrix of super high-rise building

The invention discloses a method and a device for identifying equivalent physical stiffness and a damping matrix of a super high-rise building. The method comprises the following steps: firstly, obtaining design parameters of a target super high-rise building, performing degree-of-freedom agglomeration processing on the target super high-rise building by adopting a static agglomeration method to obtain a corresponding low-degree-of-freedom equivalent system, and obtaining an equivalent mass matrix; then decoupling a physical time history signal measured at the condensation position through a complex second-order blind identification method to obtain a modal signal and a complex vibration mode, and performing modal parameter identification on the modal signal by adopting an improved Bayesian spectral density method to obtain a frequency and a damping ratio; and finally, obtaining an equivalent physical stiffness and damping matrix by combining the obtained complex modal parameters with the equivalent mass matr