Pushover analyses of a R/C frame by distinct software
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abstract
A series of pushover analyses on two-dimensional RC frames, part of an office building, are
performed. They constitute a detailed parametric study, varying the number of stories and its height, and also
the bay width. Regarding the stated objective, several commercial packages universally used in the design of
civil engineering structures were used, namely SAP 2000, SeismoStruct and MIDAS. To represent the
influence of the masonry infill panels, the equivalent tie method is used considering several values for the tie
width. The influence of other parameters, on the structural behavior of the RC frame through a pushover
analysis, is also analyzed: the confinement of the structural elements (columns and beams) and the length and
location of the plastic hinges forming near the end of the structural elements. Finally, it is also parameterized
the behavior of the structure when submitted to different load patterns, such as: uniform and modal, as
suggested in the Eurocode 8, and triangular. Major conclusions of the study elaborated are presented and
future developments are pointed-out in order to deepen the pushover analysis of two dimensional RC frames.
