Evaluation of Previous and Current Performance Based Analysis Methods

Abstract eng:
In last decades, through further development of computer technology in civil engineering, the more complex seismic analysis became possible and accuracy of the analysis is increased. ATC 40, FEMA 273, 274, 356 and recently 440 are the most commonly used resources for seismic analysis procedures enduring with computing in civil engineering. These resources explain the two common seismic analysis methods named as performance based analysis, which are “Capacity Spectrum Method” and “Displacement Coefficient Method”. With FEMA 440, these two methodologies are renewed by the experiences of the engineers. The objective of this study is to evaluate the new and previous two common performance based analysis methods for reinforced concrete structures by comparing time history analysis results. In the present study, the procedures of Capacity Spectrum Method and Displacement Coefficient Method are reviewed in detail. The methods are compared for a selected reinforced concrete structure, a 4-story reinforced concrete building. The selected building is considered to be in a high seismicity region. Maximum inelastic displacement and performance level of the reinforced concrete building are determined for each method. In the conclusion, the results of the both current and previous methods are presented and compared with time history analyses according to the displacement demands of the building.

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