Effects Of Masonry Infills On Reinforced Concrete Frame Buildings

In Ethiopia, most of the reinforced concrete buildings use hollow masonry infill walls as non-structural partition walls. Since they are used as a non-structural member, during design stage, their contribution to overall building behavior is not well known. Observations made after the earthquakes revealed that these non-structural elements had beneficial effects on the lateral capacity of the building.rnIn this study, the contribution of the hollow masonry infill walls to the lateral behavior of reinforced concrete buildings was investigated. For this purpose, G+4, G+7 and G+10 buildings were chosen as case studies. These buildings are modeled as bare frame, base infilled frame, Soft ground story frame, frame with halfof the wall reduced from base infilledframe and frame with 75% of the wall reduced from base infilled frame. The parameters that were considered are Strut width and arrangement of masonry infill walls throughout the buildings. To determine the effect of each parameter, fundamental period, base shear, lateral displacement, story shear and member forces are computed and are compared for each case.rnKEYWORDS:EARTHQUAKE, MASONRY INFILL WALL, STRUT WIDTH

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