Performance-based Advanced Seismic Analysis and Design of RC Structures with Vertical Irregularities

Abstract

For the past two decades, “Performance-based seismic design” is the focus of worldwide earthquake engineering research. The development of effective “preliminary design” techniques that adhere to standard design formats is a significant determinant of the success of its most current framework for the purpose to keep the progression on an acceptable rate of difficulty for specialists and also practitioners. Force-based seismic is inefficient since it constructs structures just for one main performance target which is the life safety, also additional objective for the performance will remain subject to the check of the drift followed by a design, resulting to a very repetitive procedure. Moreover, when the matter comes to irregular structures that is suspicious to local failure, the unfavourable “soft-storey” mechanism is likely to occur with the vertically irregular structures when the analysis is limited to force aspects only. The traditional seismic design approach must be adapted to meet the multi-level performance design, by adding performance measurements at the beginning, in order to be used inside the performance-based framework.

The significance of local damages in the seismic performance of vertically irregular Reinforced Concrete (RC) building structures was emphasized in post-earthquake damage reconnaissance studies. This forces earthquake engineers to focus on reducing the destructive effects of earthquakes on buildings. This matter is of increased significance especially when it comes to structures having deficiencies in the lateral resisting systems, as these irregularities will have a detrimental impact on the structure's behaviour. Non-linear analysis has been undertaken to investigate the seismic performance of RC Moment Resisting