Performance Based Seismic Design of Multistorey RCC Buildings with Re-entrant Corner Combine Diaphragm Discontinuity

Civil Engineering

A Performance Based Seismic Design is aimed at controlling the structural damage under the action of earthquake forces, based on precise estimation of proper response parameters using Nonlinear Pushover Analysis. It is a highly iterative process needed to meet designer specified and code requirements. The most important cause of damage of RC buildings during earthquake is the irregular building configuration. An RC building which are unsymmetrical and has lack of continuity in geometry, mass or load resisting elements is considered for pushover analysis as there are many studies carried out irregular buildings in seismic zones, but still more research is needed in this field. Therefore, this study is about the seismic response of reinforced concrete structures having combination of two plan irregularities, re-entrant corner and diaphragm discontinuity buildings. This thesis presents a Performance Based Seismic Design of Re-entrant corner RCC Buildings with different shapes of opening in Diaphragm under the Zone III and Zone V by choosing performance criteria in terms of Inter-storey Drift (IDR) and Inelastic Displacement Demand Ratio (IDDR). The Capacity Spectrum Method of Pushover Analysis is performed in SAP 2000, based on FEMA 365[4] and ATC 40 [3] guidelines, to study the performance of RC buildings designed as per IS 1893:2016 [1], with Re-entrant Corner combine diaphragm discontinuity.

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