Marsed Leti
Hüseyin Bilgin
Abstract
This study covers the seismic performance evaluation of an old template reinforced concrete building in Albania designed in 1982. This building category is constructed as residential moment-frame with no shear walls. For the demand calculation, Incremental Dynamic Analysis (IDA), is selected as a method which provides the response behavior of the structure under a set of ground motion records from the elastic range until total collapse. More than one thousand dynamic analyses are performed in the environment of ZeusNL software, developed particularly for earthquake applications. A set of 18 ground motion records with magnitude ranging from 6.5 until 7.1 is used to perform the analyses. Furthermore, IDA curves are generated based on the values gathered from the intensity measure (IM) and damage measure (DM) defined as 5% damped first mode spectral acceleration, Sa(T1,5%) and maximum global drift ratio, ϴmax respectively. In addition, limit states are selected as Immediate Occupancy (IO), Collapse Prevention (CP) and Global Instability (GI) based on FEMA guidelines. Finally, the interpretation of the building performance is presented in terms of IDA fractiles summarized as 16%, 50% and 84%.
Keywords
Nonlinear Analysis; Seismic Performance; Incremental Dynamic Analysis; Zeus-NL; Reinforced Concrete Building;
