Abstract
Objectives/methodology: In this study, a four-story frame structure is modelled using finite element software in two different conditions of infill and without infill masonry effects. A pushover analysis is carried out to assess the seismic response and building performance under three different loading conditions of modal, triangular, and uniform loading. The all-possible loadings in negative and positive directions have been applied and building response is measured. A performance capacity curve in terms of base shear is developed for all possible loading scenarios. Finally, a comparison of bare and infill frame has been made and some conclusions were made. Findings/ application: Uniform loading among all three categories is found to be higher in capacity for both types of frames in positive and negative directions. The presence of non-structural masonry walls results in a better behavior of frames compared to bare frame. They initially increase the strength, stiffness, and energy dissipation of frames despite their brittle failure. Keywords: Building Capacity Curve, Performance Point, Infill Frame, Pushover Analysis.
Highlights
Among all the natural disasters, Earthquake is considered as the most damaging to the ecological and building structures
In Ref. [5], Furtado et al observed the impact of proving infill walls in a 15 story RC building and conclude in 20% increment in its story shear and base shear results
In a research [8], applied non-ductile infill walls at different story levels of 3, 6, and 9 stories in a 9 story building and compared its consequences with simple frames. He found that presence of infill wall results in a brittle failure at 9th story while in simple frame it is found at 3rd story, overall, the presence of infill walls increased the strength and reduced the seismic vulnerability of frame [8] a four story building frame is considered with a strong system of upper bound in fill masonry
Summary
Among all the natural disasters, Earthquake is considered as the most damaging to the ecological and building structures. This concept is limited to buildings but can apply for all the structures and their supported nonstructural elements as well. [2], Ravikumar concluded that several features like stiffness, lateral strength, ductility, and regularity define the behavior of a structure during a seismic activity. This is obvious that failure starts from the weaker points in any natural and un-natural hazard activities. These weaknesses may because of discontinuity in structural mass, stiffness, and geometry [3]. In most cases, the influence of infill walls may cause an extensive damage or collapse of structure [6]
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