Reliability of structures to earthquake clusters

摘要: Recent literature about life-cycle models for earthquake resistant structures considers that damage accumulation and failure are possibly due to subsequent shocks occurring during the time period of interest. In fact, most these only consider effect mainshocks. On other hand, it is well known earthquakes occur in clusters which mainshock represents principal (e.g., prominent magnitude) event. Because there a chance aftershocks can also cause deterioration structural conditions, may be appropriate include this assessment. Recently, stochastic processes describing occurrences their on cumulative have been formalized. These employed develop structures, accounting cluster effect. paper, such model formulated with reference simple elastic-perfectly-plastic single degree freedom systems. Temporal distribution mainshocks modeled via homogeneous Poisson process. Occurrence by means non-homogeneous conditional characteristics triggering mainshock. Approximate closed-form solutions derived reliability assessment under two hypotheses total damages produced events pertaining different assumed independent identically distributed gamma or inverse-Gaussian random variables. An application illustrates implications when compared case where damaging ignored.