Comparative Analysis on Response of Steel Braced Symmetrical Structure With Base Isolation Technique

Abstract

The study of steel braced symmetrical structural is analyzed by use of base isolators. The analysis was carried out by means of software and also by experimentally. The X-type bracing was considered for the structure and applied in zigzag pattern. There was three di erent shapes of rubber base isolators are examined. These three unique shapes of base isolators are square conical and I-section was designed analytically. These designed isolators was analyzed on software. The ETABs2015 software was used for such analysis. The behavior of isolated structure was compared with xed base structure. The response spectrum method used for analysis. The results were compared in terms of displacement, lateral force and storey drift. Then experimental analysis was performed with scaled down prototype two bay symmetrical steel frame with X-type zigzag bracing and base isolators. The analysis performed on shake ta- ble with giving di erent frequencies to shake table as seismic excitations. The frame was tested for xed base and di erent shapes of base isolators conditions. The accelerometers at di erent stories gives the results in form of displacement and accelerations.