STUDY ON BEHAVIOR OF STEEL OUTRIGGER WITH VERTICAL IRREGULARITY AGAINST LATERAL LOADING

Spoorthi D C, Sridhar R

Abstract: The outrigger system has become the one of the most efficient lateral load resisting system in modern tall buildings. By providing the outrigger, the stiffness of the building increases, so that which increases the performance of building under the lateral loads. In the present comparative study the static and dynamic behavior of the reinforced concrete structure for different cases in regular and vertical irregular building 9x9 bays 40 storey 3D RC structure is modeled in SAP2000 software program. In this comparative study mainly the bare frame is compared with Steel outrigger with core for both regular and irregular building for zone 5 and wind speed 55m/s. Efficiency of the structure measured in terms of lateral displacement, drift, Base shear and time period for different cases of models. Parameter should be in such a way that it should prevent the structural and non-structural damages to the building.

Keywords: Tall Building, Regular and Irregular Building, Lateral displacement, Lateral dirft, Base shear and Time Period

DOI: https://doi.org/10.15623/ijret.2016.0508028