Seismic Risk of Soft Story Residential Building Designed as Infilled Frames

Made Sukrawa, Ida Ayu Made Budiwati

Abstract


Abstract— This study was conducted to determine the seismic risk of a residential building with soft story considering infill wall in the analysis. Four models of 4 story dormitory building were analyzed to evaluate their performances. The first model was the actual building with infill wall at the upper levels and partially open at ground level (partial soft story - M1Pss). In the second model all walls in ground floor were removed (full soft story-M2Fss). A full infill wall at all levels (M3Non-ss) and an open frame model (M4OF) were also created to be compared to the soft story models. All models were loaded with gravity and quake load appropriate for east Bali region and pushover analysis were performed. Results show that the soft story mechanism occurs due to the absence of the infill wall at ground level (M1Pss and M2Fss). In model with distributed wall (M3Non-ss) and open frame model (M4OF) soft story mechanism was not detected. Accordingly, the infill wall should be considered in the analysis of multistory frame to avoid undetected soft story mechanism.


Keywords


Diagonal strut; Infilled frame; Pushover analysis; Seismic risk; Soft story

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References


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DOI: http://dx.doi.org/10.52155/ijpsat.v36.1.4841

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