The effect of column shape on seismic performance of 3D RC framed structures with and without infill walls using pushover analysis

摘要

A ground + six storey RC space frame model with two 3m x 3m panels in each plan direction and two 3m x 4.5m panels in each principal plan direction are selected. A comparison is made between the model having the rectangular cross section of columns and the equivalent square cross section. The same models were also analyzed considering brick wall elements in the periphery of the frame. The results obtained from the nonlinear static pushover analysis performance indicate that the plastic hinges formed in the frame with square shaped columns are less severe for both of the models. It was also observed that the models with peripheral brick walls indicate a similar behaviour. It can be concluded that the square shape of the column cross section improves the seismic response of a structure as compared to the rectangular shape of an equivalent area.