Research on Equivalent Linearization Parameters of Friction Pendulum Fabrication and Seismic Isolation Design Method

Firstly, the horizontal and vertical restoring force formulas of friction pendulum bearings are deduced, and the influence of horizontal displacement on vertical recovery stiffness is discussed. The implementation process and problems that need to be paid attention to in the iterative solution of the equivalent linearization parameters of the design response spectrum are proposed; a method is proposed to comprehensively determine the equivalent radius of curvature based on the seismic isolation period target and the influence of friction force, and the friction coefficient is selected according to the distribution of static axial force. The layout method of the isolation scheme of friction pendulum bearings of different sizes; finally, combined with actual engineering cases, the isolation scheme of rubber bearing and the isolation scheme of friction pendulum bearing under different combination conditions are compared and analyzed on the vibration isolation of bearing internal force and displacement effects an