Karbon çelik, korunmuş çelik ve paslanmaz çelik malzemeden inşa edilmiş bir binanın farklı yangın senaryoları etkisinde aşamalı göçme simülasyonu

Many steel buildings have experienced fire-induced progressive collapse. In this context, investigating progressive collapse simulations for medium- and high-rise steel buildings under different fire scenarios, identifying risks, and evaluating preventive measures are of critical importance. In this thesis, the progressive collapse behavior of buildings constructed with carbon steel, protected carbon steel, stainless steel, and hybrid (stainless-carbon steel) systems was numerically examined under various fire scenarios. For this purpose, progressive collapse analyses were conducted using the ABAQUS finite element package. The analyses were carried out by considering parameters such as the location of the fire and traveling fire, and the results were systematically evaluated. For each case, temperature profiles, member axial forces, displacements, and collapse sequences were tracked in detail. The findings reveal that unprotected carbon steel buildings are highly vulnerable to rapid collapse under fire, protected carbon steel extends collapse time only to a limited degree, whereas stainless steel and hybrid systems retain their load-carrying capacity even at elevated temperatures and demonstrate significantly greater fire resistance and robustness against progressive collapse.