Effect of Irregularities on Seismic Performance of High Rise Structures

Abstract

This Paper describes about effect of mass irregularity in regular and irregular high rise structure under seismic loads. These Irregularities refer to abrupt change of geometry, mass, strength and stiffness as well. This leads to uneven distribution of forces and their corresponding deformation over the height of structure. Performing dynamic analysis and comparing the responses of Mass irregularity taken at various stories of regular and irregular buildings. Various aspects such as Modal periods, Modal frequencies, Story drifts, and Response of Time history graphs are drawn while these structures are subjected to Mass irregularity and seismic loads.