建築構造物の耐震安全性について

Abstract

This paper deals with the aseismic safety of building structures subjected to destructiveearthquakes from the probabilistic point of view. The reliability function, which is defined as theprobability of survival as a function of time, of the elasto-plastic structures to random earthquakeexcitations is discussed by considering low cycle fatigue phenomenon of structures composed ofductile materials. It is found that the reliability function is remarkably influenced by the type oflow cycle fatigue represented by a exponent and the static fracture ductility and the non-station-arity of earthquake excitations mainly expressed by the duration-time.