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Browsing by Author "Pereira, V.G."

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  • A parametric study on a RC frame based on “PUSHOVER” analysis
    Publication . Pereira, V.G.; Barros, Rui; Braz-César, Manuel
    Three commercial software packages (SAP 2000, SeismoStruck and MIDAS/CIVIL) universally used in the design of civil engineering structures, are applied on a parametric study of pushover analyses of a RC frame of an office building under a few evaluative phases. In order to represent the influence of the masonry infill panels the equivalent tie method is used; for a sensitivity study on the capacity curves, several values for the tie width are considered. The comprehensive parametric study also addresses the influence of other parameters, on the structural behavior and non linear capacity curves of the RC frame, namely: length and location of the plastic hinges forming near the end of the structural elements, and different loading patterns (with uniform, modal and triangular distributions).
    2009Conference paper Open access Show more
  • Pushover analyses of a R/C frame by distinct software
    Publication . Pereira, V.G.; Barros, Rui; Braz-César, Manuel
    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.
    2010Conference paper Restricted access Show more