Performance evaluation of reinforced concrete buildings with softer ground floors

Određivanje seizmičkog ponašanja je važan zadatak seizmičke analize prema zahtijevanom ponašanju konstrukcije. Podudaranje rezultata dobivenih prema različitim normama od velike je važnosti u postupku seizmičkog ocjenjivanja konstrukcija. U radu je opisana nelinearna analiza ponašanja triju armiranobetonskih zgrada s mekim prizemljem primjenom metode konačnih elemenata prema normama FEMA-356 i FEMA-440, te turskim potresnim normama iz 2007. Za svaku konstrukciju je prikazano stanje oštećenosti, modalna svojstva, međukatni pomaci i globalne razine ponašanja te su dani odgovarajući prijedlozi.Determination of seismic performance is a significant task in the performance-based seismic analysis of structures. The consistency between analysis results obtained according to various codes is highly significant for seismic evaluation of structures. Non-linear performance of three reinforced concrete buildings having a soft storey irregularity is studied based on the finite elements analysis according to FEMA-356, FEMA-440, and Turkish Earthquake Code - 2007. Damage situations, modal properties, storey drift ratios, and global performance levels are comparatively presented for each structure, and appropriate suggestions are given