Nonlinear static (pushover) analysis of special reinforced concrete moment frames

e421

Abstract

This research work consists of the reinforced concrete structural design of three moment-resistant buildings with different elevation configurations of two, seven and eleven floors, which were subjected to seismic checks for their subsequent non-linear static analysis in order to obtain the performance levels and ductility of each structure, according to the different levels of seismic threats. To carry out this analysis, the design of plastic hinges applied to the structural elements was carried out with the parameters established in FEMA 356 [1], to then define and assign the gravitational and lateral non-linear loads. According to the results obtained, the number of floors of the building is proportional to its ductility and overstrength; in addition, with the Pushover curve, the force reduction factor was determined for each structure and each level of seismic threat, obtaining values that allow us to determine that the designs were efficient. Also, all structures have the capacity to withstand the action of a second Frequent and Occasional earthquake, but not a Rare or Very Rare earthquake.