Abstract
Abstract Multi-storeyed industrial structures subjected to seismic excitation are invariably subjected to a slow cycle fatigue type of load reversal. If a structure has to perform satisfactorily its components should have sufficient energy-dissipating characteristics and also be capable of being repaired after a definite excursion into the post-elastic region. Single angle members are extensively used in transmission and microwave towers and also in braced domes. The earthquake type of loading produces adverse effects on single angle members which are unsymmetrical in nature. This investigation examines the performance of beam and beam-column elements subjected to reversed, static cyclic loading. As a first step, the performance of rolled steel equal angle members subjected to shear centre and off-shear centre loading has been studied under flexure, flexure shear and flexure shear axial load combinations. Based on the above experimental results the importance of reversal of loading on single angle members has been established.
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