Evaluation of Design Parameters on PBD of RC Buildings with Masonry Infills

Document Type : Structural Earthquake Engineering




Masonry infills are provided in almost all residential buildings as enclosure. The building analysis and designs are carried out considering a representativeempirical time period. The yield strength of URM infilled frames is much higher, and yield displacement is smaller for bare frames, providing higher ductility. The extent of damage to infill elements define the hazard level imposed and the corresponding risk associated with it. In this paper, the performance of RC building with infills is evaluated using pushover analysis for various seismic hazard levels and loading patterns as per ATC40 & FEMA356 in ETABS. A seven storey regular RC building is located in seismic zone-V (IS1893-0.36 g). The parameters of evaluation include time period formula, modelling technique of infill, masonry units used in practice, and location of openings in building. The code provisions for open ground storey buildings have been evaluated for performance assessment. Under 0.36 g hazard level, the building frame satisfied Life Safety performance objective under the three lateral loading patterns. It is found that AAC masonry blocks least affect the performance of frame elements and also the required failure mode for the structure.


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