Application of performance-based design, which is promoted as a global trend that is representative of ISO2394, emphasizes the importance of evaluating structural safety based on the reliability design method. This paper describes correlation between partial safety factors and the return period of input motions for use of the reliability design method for steel rigid-frame piers. For this study, partial safety factors are calculated using a method proposed by the authors, which prepares several partial safety factors around a primary value obtained in advance from AFOSM. The correlation is confirmed by design of a steel pier to withstand local buckling against ground excitation. In addition, effects of medium and small scale earthquakes are examined according to the return period of seismic loading.
In Japan, large earthquakes have caused many damages to structures. Cracks in the reinforced concrete and plasticization of the steel bar and steel components resulted in increased damage. In the seismic design, the dynamic response analysis is carried out by using a mathematical model that appropriately evaluates the nonlinearity of the material and the components and the seismic performance is confirmed by performing a dynamic response analysis. However, when applying new materials and components, much time and much effort are required to select a mathematical model. In this study, we focused on the high pattern recognition capability of the neural network. We attempt to directly model using a neural network without replacing the complex nonlinear hysteretic behavior using the mathematical model. By improvement of learning data and introduction of deep learning, it was confirmed that the recognition ability for nonlinear hysteretic behavior of neural network was greatly improved, and its applicability as a numerical operation subroutine for time history response analysis was drastically improved.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.