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Correlation of Structural Irregularity in Circular Buildings Using Vital Signs
The concept of Vital Signs (VS) has given a simplistic yardstick for detecting structural irregularities in a building which is the cause of many failures in destructive earthquakes. In this study, three parameters, namely time period, story displacement and mode shape are examined for their goodness as VS for the buildings by studying the effect on them due to two plan and three vertical irregularities. Static analysis is carried out on 20 circular shaped buildings with 9 stories using ETABS. After validation studies on the two base models (regular building), the effect of the VS is studied upon by gradual introduction of torsional irregularity, re-entrant corner irregularity, mass irregularity, vertical geometric irregularity and weak story. For each type of irregularity, three levels of models were analyzed (with increasing order of irregularity) except for torsional irregularity for which six levels were considered. From the study, it is observed that the time period of the building changes in a definite pattern with increasing level of irregularity which justifies its use as a vital sign. However, displacement for the models compared for two extreme points on the plan does not show a definite pattern for all the cases. Based on the study, symptomatic rules are arrived at on how the effect of the irregularities considered is captured in the VS which aids in their detection in building design processes.
Correlation of Structural Irregularity in Circular Buildings Using Vital Signs
The concept of Vital Signs (VS) has given a simplistic yardstick for detecting structural irregularities in a building which is the cause of many failures in destructive earthquakes. In this study, three parameters, namely time period, story displacement and mode shape are examined for their goodness as VS for the buildings by studying the effect on them due to two plan and three vertical irregularities. Static analysis is carried out on 20 circular shaped buildings with 9 stories using ETABS. After validation studies on the two base models (regular building), the effect of the VS is studied upon by gradual introduction of torsional irregularity, re-entrant corner irregularity, mass irregularity, vertical geometric irregularity and weak story. For each type of irregularity, three levels of models were analyzed (with increasing order of irregularity) except for torsional irregularity for which six levels were considered. From the study, it is observed that the time period of the building changes in a definite pattern with increasing level of irregularity which justifies its use as a vital sign. However, displacement for the models compared for two extreme points on the plan does not show a definite pattern for all the cases. Based on the study, symptomatic rules are arrived at on how the effect of the irregularities considered is captured in the VS which aids in their detection in building design processes.
Correlation of Structural Irregularity in Circular Buildings Using Vital Signs
Lect.Notes Mechanical Engineering
Tripathy, Sasmeeta (editor) / Samantaray, Sikata (editor) / Ramkumar, J. (editor) / Mahapatra, S. S. (editor) / Sabhadiya, Renil (author) / Abdul Akbar, M (author)
International Conference on Recent Advances in Mechanical Engineering Research and Development ; 2022 ; SILCHAR, India
2023-05-31
9 pages
Article/Chapter (Book)
Electronic Resource
English
Online Contents | 1999
Online Contents | 1998
Online Contents | 1999
Online Contents | 1999
Online Contents | 1999