Critical Earthquake Loads for SDOF Inelastic Structures Considering Evolution of Seismic Waves

摘要: The damage of structures induced by earthquake ground motions depends primarily on three parameters: (1) the characteristics source properties and (magnitude, epicentral distance, duration, frequency content, amplitude local soil type), (2) structure (natural frequencies, mode shapes, damping properties, material construction, structural system ductility capacity), (3) how close structure’s fundamental natural to dominant motion. 2011 off Pacific coast Tohoku has demonstrated these facts clearly. In general, motion involve large inherent uncertainties cannot be controlled while have smaller variability can managed some extent in general. For instance, members construction selected seismic-resistance improved fairly high levels through member detailing for enhancement capacity.