On the Influence of Unexpected Earthquake Severity and Dampers Placement on Isolated Structures Subjected to Pounding Using the Modified Endurance Time Method

The aim of this study is to investigate the performance isolated structures by considering possibility impact under severe earthquakes. In design structures, required displacement capacity determined based on considered earthquake hazard level. However, there a an caused moat walls or adjacent Dampers are used in improve structural and nonstructural components. regard, three (6, 9, 12 stories) equipped with Triple Friction Pendulum Isolator (TFPI) designed levels BSE-1 return periods 475 years. Based different positions these relative each other, four scenarios defined effect impact. Modified endurance time (MET) method, as cost-efficient nonlinear history analysis employed for evaluation variable levels. placement dampers also taken into account evaluating dampers. Therefore, have been retrofitted once adding damping stiffness devices (ADAS) stories fluid viscous (FVD) at Results indicate that might collapse BSE-2 2475 This matter influenced adjacency two next severity fact depends height isolators so tall, decreased shorter structure. Moreover, has significant influence components, depending reason