Analysis on Seismic Behavior of Strong Column Weak Beam with Prediction of Storey Drift

This study investigates the strong column weak beam or capacity-based design of structure that is increasing commonly in earthquake resistance design. For making any structure earthquake resistant strong column weak beam design approach is good to hire because it takes less specialization in earthquake resistant design. Low to medium rise buildings are performing well for the seismic actions. The other method is to provide lateral load resisting element such as shear wall, dampers, base isolators etc. These methods of seismic resistance are costly and requires special attention while installation but the capacity based designed approach requires no extra element in frame although making existing frame elements to be stronger. In this work, three type of plan irregularity i.e., “L” shape, “T” shape and “H” shape is being taken and those are being imposed over RC frame which has designed as strong column weak beam design criteria for four different heights of G+3, G+5, G+7, G+10 which are analyzed for increasing number of entrant corners and located at seismic zone IV. Linear static, linear dynamic and nonlinear static methods are used to analyze those models with help of ETABS software. Results which are discussed are modal analysis, storey drift, torsional ratio, ductility ratio, performance point and hinge results. After analysis of results for different irregularly planed structure with different storey heights, it can conclude that irregularity does affect the strong column weak beam failure mechanism. Hence where ever there is an irregular structure to be designed as strong column weak beam design criteria there must be an analysis of it and design provisions should be mention explicitly.