Experimental and numerical studies of shear pin fractures based on linear and bilinear models
Shear pins are commonly used elements integrated with seismic isolation bearings to restrict the relative displacement between the superstructure and the substructure. However, constitutive models for seismic isolation bearings used in seismic isolation designs have not considered the effects of shear pin fractures. In order to establish the constitutive model of seismic isolation bearings with shear pin fractures considered, shear fracture tests of shear pins were conducted, and a linear model and a bilinear model for shear pin fractures were established. By comparing numerical results of different models, the linear constitutive model for shear pins was verified to be accurate enough and suggested to simulate the effects of shear pin fractures in seismic isolation designs.