Behavior Factors: a Proposal for RC Framed Buildings Designed According to Current Seismic Codes

Juan Vielma, William Lobo, Maria Mulder

Abstract


Nowadays the seismic design is based on the results of elastic analysis of structures (indeed of the growth of the non-linear based procedures). In order to perform the analysis of structures which are modeled with elastic behavior, although the engineer knows that they could reach plastic behavior, seismic design codes prescribe the reduction of elastic design spectra using response reduction factors. These factors have been formulated based on engineering judgement. In this article it is proposed a new methodology in order to determine these response reduction factors by means of the results of the non-linear response of soils representative of the profiles of the Venezuelan seismic code simultaneously with reinforced concrete structures modeled as multi-degree of freedom systems. Computed values are greater than those the seismic code prescribes, then the design of buildings is controlled by displacements rather strength.

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References


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