Behavior of reinforced concrete frames with masonry infills in seismic regions
The interaction in earthquakes of reinforced concrete frames with infill masonry walls has long been a subject of strong interest because of their abundance in regions of high seismic risk. A model was created to provide a simple method to analyze the behavior of reinforced concrete frames with infills in earthquakes that can be used to judge the vulnerability of such a building to earthquake effects. The model was tested using experimental work done by Benjamin and Fiorato. It was then applied to four buildings surveyed in Bingöl, Turkey, following the May 1, 2003 earthquake. From these four buildings, three distinct damage states were observed. Using a database compiled from research done to date on reinforced concrete frames with masonry infills, and on masonry panels, these damage states correspond to a specific drift range, which was used to compare the damage found in the buildings, and the drift level calculated when using the model. From these results, it is apparent that in earthquake zones where masonry infilled reinforced concrete frames are common, it is possible to accurately model the response of structures to a given ground motion by including the masonry infills with and without openings, creating a simple check of the deflection, and thus damage state expected in a building.^
Mete Sozen, Purdue University.
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