Abstract
This paper presents the seismic performance of an existing building in Padang, Indonesia, considering the brick infill effect by applying a developed analytical model. In this model, masonry infill was replaced by a diagonal compression strut which represented distributed compression transferred diagonally between infill/frame interfaces. The infill/frame contact length could be determined by solving two equations, i.e., static equilibriums related to the compression balance at infill/frame interface and lateral displacement compatibility. Consequently, the equivalent strut width is presented as a function of infill/frame contact length. Two calculations of seismic performance of an existing R/C building, with and without considering brick infill, were performed. A distinct difference was identified between the lateral strength of such building with and without infill effects. As the results, the nonstructural brick masonry infill significantly contributed to the seismic performance of the R/C building.
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