Experimental Evaluation of Structural Properties of Circular Scrap Tyre Pad (CSTP) Base Isolator

Base isolation systems have conventionally been used as a tool for mitigating the impacts of earthquakes on civil structures and to attenuate their seismic responses. Optimal design of base isolator has a vital role in the performance of a structure in response to earthquake. The study focuses on the development of low-cost circular scrap tyre pad (CSTP) base isolator in unbonded configuration. The compression and shear properties of isolators were investigated to check the vertical stiffness and lateral flexibility. The study also investigates the effect of shape factor and vertical pressure on structural properties of isolator. The result reveals that the shape factor and vertical pressure has a considerable effect on the lateral performance of the CSTP base isolator.