Seismic analysis of reinforced concrete tubular structures with lateral load resisting systems in high rise buildings

The development of efficient structural systems, the need for vertical expansion due to urban land constraints, and the fast-expanding population all had a role in the proliferation of high-rise buildings throughout the world. In addition to gravity pressures, lateral loads like earthquake and wind loads must be taken into account while building high-rise structures. To properly handle the effects of lateral loads, structural engineers were asked to design lateral load resisting systems with adequate tubular structural shapes. A strong structural system for resisting lateral loads is more important for structural efficiency and safety. Extended three-dimensional analysis of building systems (ETABS) software was used to develop and analyse the research models under the load combinations prescribed in IS: 1893 (Part 1)-2016. The response spectrum analysis method was used to record the seismic reactions. Results for story displacement, storey shear, and story drift are compared along both lateral directions. A comparison is also made between the model's base shear and mass participation factor results. Two types of reinforced concrete tubular constructions, framed tube and tube in tube structures, with various lateral load resisting systems, were thoroughly compared. A comparison was made between the seismic behaviour of several types of reinforced concrete tube structures. Tube in tube constructions with bracing models performed better than frame tube constructions. X braced framed tube structures and tube in tube structures with V bracing outperformed all other structural models that were tested.