Analysis of the Seismic Performance of Various Irregularly Shaped Concrete Columns on Residential Buildings

The shape of the columns can affect a structure's seismic resistance. A building's important structural and architectural components are columns. Seismic resistance requires lateral strength and stiffness. Architects and engineers commonly use L-shaped, T-shaped, and plus-shape for composite columns. The researchers assessed the capacity of irregular concrete columns under seismic stress circumstances, which may help structural designers for future designs. In order to accomplish this, the researchers investigated and analyzed the seismic strength of the columns using STAAD, as well as the finite element approach, which were used to validate the STAAD results. The results showed that using square columns for a three (3)-story building resists seismic waves better than other columns, while the irregular-shaped columns resist seismic waves better for five (5) and seven (7)-story residential buildings. Compared to rectangular and irregularly shaped columns, square columns are more ideal for low-rise residential buildings. For residential buildings over three floors, irregular-shaped columns are recommended to be able to withstand seismic waves. Keywords: Seismic capabilities, storey drift, irregularly shaped columns, finite-element method