A REVIEW OF DYNAMIC ANALYSIS OF VERTICALLY IRREGULAR RC BUILDING
Imdadhusain Momin
Post Graduation Student, Department of Civil Engineering, CGPIT, Uka Tarsadia University, Bardoli, Gujarat, India , IN
Aditya Bhatt
Post Graduation Student, Department of Civil Engineering, CGPIT, Uka Tarsadia University, Bardoli, Gujarat, India , IN
Anuj Chandiwala
Post Graduation Student, Department of Civil Engineering, CGPIT, Uka Tarsadia University, Bardoli, Gujarat, India , IN
Keywords: Mass Irregularity, Set-back Structure, Stiffness Irregularity, Strength Irregularity, Vertical Irregularity
Abstract
This study summarizes state-of-the-art knowledge in the seismic response of vertically irregular
building frames. Criteria defining vertical irregularity as per the current building codes have been
discussed[1]. A review of studies on the seismic behaviour of vertically irregular structures along with their
findings has been presented. It is observed that building codes provide criteria to classify the vertically
irregular structures and suggest dynamic analysis to arrive at design lateral forces. Most of the studies
agree on the increase in drift demand in the tower portion of set-back structures and on the increase in
seismic demand for buildings with discontinuous distributions in mass, stiffness, and strength. The largest
seismic demand is found for the combined-stiffness-and-strength irregularity.
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