THE USE OF SIMPLE PULSES TO ESTIMATE INELASTIC RESPONSE SPECTRA |
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| Authors: | ISABEL CUESTA MARK A ASCHHEIM |
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| Institution: | 1. Los Alamos National Laboratory , LANL, FWO-DECS, P.O. Box 1663 MS M102, Los Alamos, New Mexico, 87545, USA;2. Department of Civil and Environmental Engineering , University of Illinois , 205 North Mathews, Urbana, Illinois, 61801, USA |
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| Abstract: | Inelastic response spectra are estimated for elasto-plastic SDOF systems subjected to strong earthquake ground motions by applying the strength reduction factors determined for a simple pulse to the elastic response spectrum of the ground motion. This approach relies upon similarities in the strength reduction factors computed for earthquake ground motions and for short duration pulses. The accuracy of the estimated inelastic spectra obtained using 24 simple pulse waveforms is assessed in order to identify subsets of just several pulse waveforms that are suited for this purpose. Based upon the ground motions and pulses investigated, this approach appears to be equally applicable to short and long duration ground motions and those having near-fault forward directivity features. |
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| Keywords: | Pulses isoductile spectra strength reduction factor |
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