Nonlinear static "pushover" analysis of multi-storey reinforced concrete building

Abstract

Contemporary structural design implies the nonlinear behaviour of ductile structural elements for the design of seismic actions, which implies the application of nonlinear analysis. Pushover analysis evaluates the seismic performance of the structure and combines the behavior of bearing and non-bearing elements thus forming a description of the overall degree of damage to the construction for different levels of seismic action. This paper presents the results of the nonlinear static "pushover" analysis of a multi-storey reinforced concrete building designed according to EN 1992-1-1 and EN 1998-1. The structure was exposed to a monotonically increasing lateral load. The analysis was performed using four different material nonlinearity models (infrmFB, infrmDB, infrmFBPH, infrmDBPH) for two orthogonal directions in the SeismoStruct program. The assessment of seismic performance of the structure was performed based on the results of the "pushover" analysis for each of the applied nonlinear material models.