INCREMENTAL DYNAMIC ANALYSIS OF MID-RISE RC BUILDINGS TO ASSESS EFFECT OF CONCRETE STRENGTH AND TENSION REINFORCEMENT RATIO IN BEAM

IDA is a parametric analysis method that has used commonly in several different forms to assess the structural performance under seismic loadings. This paper focuses on effect of tension reinforcement ratio and concrete strength reinforced (RC) structures. For numerical analysis, two RC frame type structures were selected. One them 5 stories other 7 stories. Two class, C20 C25, considered three ratios for analyses. Tension determined half compressive reinforcement, equal double ratio. Incremental dynamic analyses (IDA) performed these buildings. In this study execute IDA, eleven acceleration benchmark records multiplied with various scaling factors from 0.2 1.2. Maximum base shear corresponding roof displacement responses obtained curves generated according responses. compared each by using suitable graphs. According results, increasing beam elements not any maximum displacement. Whereas, decreased interstorey drift result limited damage due