Abstract- Hancılar MSc.
SEISMIC PERFORMANCE EVALUATION OF MASONRY INFILLED REINFORCED CONCRETE FRAME STRUCTURES
(Thesis Supervisor: M. Nuray Aydınoğlu)
A comparative study of the seismic performance evaluation including P-delta effects of the masonry infilled reinforced concrete framed structures is carried out. Firstly a static nonlinear pushover analysis is performed on the basis of the single mode approximation. Following the pushover analysis, the structural capacity analysis including P-delta effects is executed and the capacity curves excluding and including P-delta effects are plotted. In addition, the capacity curves are evaluated in the bilinear forms. The key values such as the yield spectral coordinates, post-yield slope ratio, the initial period and the geometric frequency as the representative P-delta parameter are obtained for the nonlinear seismic analysis. Inconsistent representation of P-delta effects in FEMA 356 (FEMA 273) document through global pushover curve is also shown. The comparative studies are based on the analysis methods as mentioned above for fifteen different five-story frames. The frames are reinforced concrete bare frames and masonry infilled reinforced concrete frames. The masonry infill walls are represented by equivalent compression struts in mathematical model and considered in poor and fair conditions as explained in FEMA 273 document. The seismic demand and nonlinear time history analyses of the frames are performed under YPT record of Kocaeli (1999) earthquake and El Centro record of (1940) Imperial Valley earthquake separately.