DERIVATION OF SEISMIC DESIGN PARAMETERS FOR HIGH-PERFORMANCE FIBER REINFORCED CONCRETE (HPFRC) AND MULTI-MATERIAL BUILDINGS
Kaymaz, Ibrahim 1981-
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Over the past decade, various experimental studies have demonstrated the advantages of high-performance fiber reinforced concrete (HPFRC) for seismic applications, most importantly high ductility, energy absorption capacity and damage tolerance. However, large-scale applications of HPFRC are still rare today, mainly resulting from two facts: lack of explicit design guidelines and high cost. In this study, seismic design parameters; namely, response modification, system overstrength and displacement amplification factors (R, Ω0, Cd) are derived for reinforced concrete moment resisting frames based on the procedure outlined in FEMA P695. Two different buildings designs are considered. In one of these designs, the concrete is entirely replaced with HPFRC. In the second design, to address the cost issue, only the plastic hinge regions are built from HPFRC while reinforced concrete is used for the rest of the buildings. The seismic design factors are quantified using the current code concepts, with the help of incremental dynamic analyses and finally by means of risk assessment techniques. The results are proposed as a basis for further research on seismic design of HPFRC and multi-material buildings.