Experimental Investigation on the Evaluation of the Seismic Performance of Steel Frame with and without Sustainable STRP Bearings Subjected to Cyclic Loading (original) (raw)

The topic of the study looks at the performance of a steel frame under cyclic loads with a fixed base and a STRP base. Because of its effectiveness in resisting seismic shocks, seismic base isolation technology is thriving in industrialised countries. Scrap Tyre Rubber Pad (STRP) bearings will be a low-cost alternative to traditional seismic base isolation procedures for underdeveloped countries. The qualities of STRPs are nearly identical to those of traditional rubber bearings. Researchers conducted numerical analytical research on STRP bearing for buildings and proposed that it be employed for low-rise regular buildings, yielding superior results. In an effort to better understand how the STRPs operate in a scaled-down steel frame structure, an investigation has been made based on the findings of analytical investigations. The purpose of the experiment was to compare the steel frame's performance with and without STRP bearings. Examining the sliding ability of the STRPs positioned in the frame is the primary goal of this work. The deflections of the frame at the top, middle, and bottom stories have been evaluated for this aspect, for the lateral seismic force applied. From the investigation, it is observed that maximum deflections are observed at the roof storey than other stories tested for the investigation. Significantly, it is observed that an ultimate degradation of stiffness of the frame of about 23% to 40% is attained and subsequently, a superior increase in energy dissipation capacity of about 40% is attained which is a prominent factor required for a base isolation material.

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