Seismic Assessment Of Old Existing Rc Buildings With Masonry Infill In Madinah As Per Asce

Abstract

An existing RC building in Madinah is seismically<br> evaluated with and without infill wall. Four model systems have been<br> considered i.e. model I (no infill), model IIA (strut infill-update from<br> field test), model IIB (strut infill- ASCE/SEI 41) and model IIC (strut<br> infill-Soft storey- ASCE/SEI 41). Three dimensional pushover<br> analyses have been carried out using SAP2000 software<br> incorporating inelastic material behavior for concrete, steel and infill<br> walls. Infill wall has been modeled as equivalent strut according to<br> suggested equation matching field test measurements and to the<br> ASCE/SEI 41 equation. The effect of building modeling on the<br> performance point as well as capacity and demand spectra due to EQ<br> design spectrum function in Madinah area has been investigated. The<br> response modification factor (R) for the 5 story RC building is<br> evaluated from capacity and demand spectra (ATC-40) for the<br> studied models. The results are summarized and discussed.