Reducing the seismic failure potential of reinforced concrete frames

Neda Asgarkhani; Farzin Kazemi; Ahmed Manguri; Robert Jankowski

doi:10.23918/eajse.v10i1p11

Reducing the seismic failure potential of reinforced concrete frames

Abstract

Nowadays, there is an extreme need for buildings with seismic resistance capability in rural areas, in which, it is possible to increase the floor number of buildings. In this study, the effects of number of bays and story levels on the seismic performance level of Reinforced Concrete (RC) frames were investigated. The 3-, 5-, 7-, and 9-story RC frames were modeled using ETABS software. In order to collapse state analysis, Incremental Dynamic Analyses (IDAs) were performed on the verified 2D models in Opensees subjected to near field records with and without pulse like (i.e., PL and NL) effects. The results of analysis showed that the number of bays had considerable effects on the seismic performance levels of RC frames and it should be considered in seismic design process. For this process, a specific procedure can be implemeted to connect the beams of lateral bays to the main moment-resisting frame. It should be noted that the beam connection should be further designed to resist axial and bending deformations of seismic load. In addition, it is recommended to use the result of this study for retrofitting purposes.