Nonlinear Dynamic Behavior of RC Buildings Against Accelerograms with Partial Compatible Spectrum

Abstract eng:
Recently, In order to obtain artificial accelerograms with compatible spectrum using wavelet an alternative way, named two-band matching procedure, is presented. This procedure is based on preserving the non-stationary characteristic of the original records in the modified accelerograms. It needs two earthquake records with different characteristics to match the short period and long period zones of the design spectrum, separately. Therefore, two accelerograms must be representative of a near fault and distant fault seismic events. The selected first one is Friuli with a closest distance to the rupture failure of 13 Km, and the selected second one is Tabas with a closest distance to the rupture failure of 94.4 Km. Then, four groups are arranged; (1) the fullymatched, (2) the 1st-semi-matched, (3) the 2nd-semi-matched, and (4) the partially-matched records. Finally, the dynamic inelastic time history analysis of a typical 16-story RC building designed by the Direct Displacement Based Design method (DDBD) against these groups is carried out. Different influence of the different matching procedure on the seismic behavior of the building is discussed, in detail.

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