A Review of Magnification Factor on Open Ground Multi Storey Building Structure

Civil Engineering

This work concerns with a behavior of infilled frames. The feasibility of possible immediate implementation of some recent developments both in analysis and design of infilled frames for practical design is study. It is now widely recognized that masonry infill panels used in reinforced concrete frame structures, significantly enhance both the stiffness and the strength of the surrounding frame. However, their contribution is often not considered because of the lack of knowledge of the composite behaviour of the surrounding frame and the infill panel. Currently, Seismic Design Codes contain provisions for the calculation of stiffness of solid infilled frames mainly by modeling infill as a ‘diagonal strut.’ However, such provisions are not provided for infilled frames with openings. The present study, proposes analytical equations of the reduction factor, which is expressed as the ratio of the effective width of the diagonal strut of an infill with openings over that of a solid infill, in order to be able to calculate the initial lateral stiffness of reinforced concrete frames with infills that have openings.

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