Research article

DYNAMIC PERFORMANCE OF L SHAPED ASYMMETRIC BUILDING WITH SOIL STRUCTURE INTERACTION

Debi Prasad Das1*, Diptesh Das2, Pijush Topdar3 and Bibhuti Bhusan Ghosh4

Online First: October 29, 2022


A plan asymmetric building having L shape normally exhibits a complex response under dynamic loads. In this research work, effects of change of height and change in number of bays are studied separately. Different support conditions based on soil types are also considered for analysis under earthquake ground motion. A specific type of buildings where ten bays, eight bays, six bays, and four bays are considered in one wing, and the other wing contains ten bays of the nine storied plan asymmetric buildings have been chosen to compare the responses. Also, twelve, nine, six, and single storied buildings are considered for analysis with the interaction of soil structure. It has been observed that the time period is much more than the time period based on the empirical formulae used by different international codes. The magnitude of rotation around one of the horizontal axis of the building is found to be higher with the decrease in the number of bays. Base shear increases with the rise of height of building.

Keywords

Time history analysis; soil-structure interaction; dynamic analysis; high-rise building; plan asymmetry