A Comparative Assessment of Existing Structure by Performance Based Analyses
[1]
Ali Demir , Department of Civil Engineering, Faculty of Engineering, Celal Bayar University, Manisa, Turkey.
[2]
Hakan Başaran , Department of Civil Engineering, Faculty of Engineering, Celal Bayar University, Manisa, Turkey.
[3]
Muhiddin Bağci , Department of Civil Engineering, Faculty of Engineering, Celal Bayar University, Manisa, Turkey.
There have been tremendous losses of lives due to recent earthquakes which can largely be attributed to colossal damages incurred in the structures Therefore, several non-linear models have been developed to determine seismic performance of structures accurately and to minimize damages. Even though nonlinear time history analysis is the best method for determining seismic demands, FEMA-356, FEMA-440 and ATC-40 non-linear static method or displacement analysis has been suggested. Our study addressed Turkish Earthquake Code 2007, ATC 40 and FEMA 440 capacity spectrum method; FEMA 356 and FEMA 440 Displacement Coefficient Method. Moreover, non-linear dynamic analysis was applied to already present structures and its accordance with pushover analysis was investigated. Differences observed due to different methods were reported. For numerical analysis, reinforced concrete 3, 5 or 7 stories structures having A3 inconsistencies were studied. Incremental static pushover analysis and capacity curves of structures subjected to the same earthquake effects were carried out and earthquake demands for 7 different real earthquake data were calculated by using non-linear dynamic analysis and by drawing performance point versus time history. Finally, results obtained by non-linear static analysis and non-linear dynamic analysis were compared.
Performance Based Analyses, Capacity Spectrum Method, Displacement Coefficient Method, Capacity Spectrum
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