Akademik Veri Yönetim Sistemi
18th World Conference on Earthquake Engineering, Milan, İtalya, 30 Haziran - 05 Temmuz 2024, cilt.1, sa.4, ss.1-10
Large amplitudes of strong ground motions near the surface fault rupture in the 2023 Kahramanmaraş earthquakes exceeded existing seismic motion prediction equations. We confirmed that they were mainly forward-directivity and fling-step pulses by theoretical simulations based on the wave number integration method. Furthermore, we conducted a field survey of buildings directly above and near the surface fault ruptures, and confirmed that buildings with low rigidity and earthquake resistance, such as unreinforced foundations and walls, were greatly deformed by fault displacement and many collapsed. On the other hand, buildings with high earthquake resistance and rigidity, such as those with solid reinforced foundations and walls that remain, escaped severe damage even directly above the fault rupture. The fact that buildings with high seismic resistance are able to cope and avoid major damage even directly above fault ruptures is consistent with the results of previous research studies