How to Model and Design High Rise Buildings using ETABS.pdf

The asymmetry may make the structure more vulnerable and lead to collapse under the effect of lateral loads. Plan irregularities are crucial factors which decrease the seismic performance of the structures. Magnitude of these lateral deflections is related to many variables such as structural system, mass of the structure, mechanical properties of the structural materials and the irregularities in plan. Structures experience lateral deflections under earthquake loads. It becomes necessary to identify the performance of the structures to withstand against disaster for both new and existing one. This may subject to devastating earthquakes in future. Many buildings in the present scenario have irregularities in plan. Storey accelerations increased for Tubular structures over the Tall RC Moment Resisting Structure. Story displacement and Storey drift got reduced in Tubular Structures compared to Tall RC Moment Resisting Structure and the value of top story displacement and storey drifts are well within the limits. The Base shear for Tall Tubular structures increased when compared to Tall RC Moment Resisting Frame Structure under the seismic loading. The Time Period for Tubular structures reduced considerably when compared with the Tall RC Moment Resisting Frame Structure. 21-storey 3D model of Tall RC structure along with tubular structural system models in seismic zone II and seismic zone V are considered to study the time period, base shear, lateral storey displacement, storey drift. The modeling and analysis are done using ETABS V17 software. Present study is made to investigate the effect of seismic loading on Tall structure and hence Response Spectrum Analysis is carried.

Tubular structures are adopted for Tall Structures for effectively resisting the impact of lateral loads i.e., Wind load and Seismic load.

How to Model and Design High Rise Buildings using ETABS.pdf