In this paper, optimal design of hybrid low damping base isolation and magnetorheological (MR) damper has been studied. Optimal hybrid base isolation system has been designed to minimize the maximum base drift of low damping base isolation system where for solving the optimization problem, genetic algorithm (GA) has been used. In design procedure the maximum acceleration of the structure has ...

This study presents a novel method for accurately predicting the dynamic behavior of multistory frame buildings under earthquake ground motion. The proposed allows approximately estimating inter-story drift ratio, crucial parameter strongly associated with building damage, its distribution along height, and maximum value location. An equivalent continuous beam model rotation at base, consisting...

Many parameters affect the behavior of tall buildings under seismic loads, some which are main shock-after shock records and using lateral load resistance systems in reinforced concrete buildings. End shear walls a kind walls, connecting their end This study was conducted on two 30-story structures, were subjected to sequences far fault analyzed by nonlinear time history analysis. The results i...

The paper discusses how joint damage and deterioration affect the seismic response of existing reinforced concrete frames with sub-standard beam–column joints. available simplified modeling techniques are critically reviewed to propose a robust, yet computationally efficient, technique for simulating nonlinear behavior substandard Improvements over models include simulation cyclic stiffness str...