DYNAMICS ANALYSIS OF STRUCTURES SUBJECTED TO EARTHQUAKE LOAD

Abstract

The main objective of earthquake engineering is to design and build a structure in such a way that the damage
to the structure and its structural component during an earthquake is minimized. Dynamic analysis shall be performed to
obtain the design seismic force, and its distribution to different levels along the height of the building. It should be performed
for both regular and irregular building.
To perform dynamic analysis this are provision laid down in IS 1893 (part 1) 2002, with respect to height of building and
according to irregularity of the building.
In regular building greater than 40m height in zone IV and V is required and greater than 90m height in zone II and III.
In irregular building greater than 12m height in zone IV and V is required and greater than 40m height in zone II and III.
Dynamic analysis may be performed either by Time History Method or by Response Spectrum Method.
In present study, multi-story irregular buildings with 20 stories have been modeled using software STAAD PRO for seis mic
zone IV in India. Dynamic responses of building under actual earthquake, DELINA (ALASKA) 2002 have been investigated.
These papers highlight the comparison of Time History Method and Response Spectrum Method.