This paper presents an efficient optimization procedure to find the optimal shapes of double curvature  arch  dams  considering  fluid–structure  interaction  subject  to  earthquake  loading. The optimization is carried out using a combination of the magnetic charged system search, big bang-big crunch algorithm and artificial neural network methods. Performing the finite element  analysis  dur...

in an earthquake country like iran it is of paramount importance that the structural form be sound. the designer must be able to predict satisfactorily the behavior of the structure in the event of a strong ground motion. in order to be able to make a wise choice, he also should know enough about the consequences of the earthquake damage to the structure and economic factors involved. this pipe...

China is an earthquake-prone country. In recent years, Wenchuan earthquake and other earthquakes have caused serious damage to power facilities. As the most important electrical equipment in UHV substations, transformers are facing great threat of disasters. Currently, seismic evaluation does not consider soil-structure interaction, which conducive fine design transformers. Based on structural ...

Recent results suggest that measurements of the average “predominant period,” sp, of an earthquake using the first few seconds of P waves provide a rapid approximate estimate of magnitude that can be used for earthquake early warning systems. Although these prior studies demonstrate the empirical value of such an approach, we here examine the theoretical properties of the predominant period est...

This study aims to analytically implement base isolation with soil–structure interaction (SSI) on a sample structure and develop very simple solution add these combined effects into the mass, damping stiffness matrices of structure. A spectrum analysis is also carried out considering base-isolated structures SSI. Dynamic simulations are performed throughout study. In simulations, three shear fr...

Introduction In recent years, large earthquakes have occurred frequently all over the world.1-5 Earthquakes cause a large number of casualties with their catastrophic force. On May 12, 2008, an earthquake of 8.0 magnitude occurred in Wenchuan, Sichuan Province, in China. By May 25, 2008, 68,712 people had died, 374,640 were wounded, and 17,042 were reported missing. On January 12, 2010, a 7.3-m...

A common approach in modeling the generation and propagation of tsunami is based on the assumption of a kinematic vertical displacement of ocean water that is analogous to the ocean bottom displacement during a submarine earthquake and the use of a non-dispersive long-wave model to simulate its physical transformation as it radiates outward from the source region. In this study, a new generatio...