STUDY ON INFLUENCE OF POSITIONS OF CORE WALL FOR STRUCTURES WITH SET AND STEP BACK CONFIGURATION

Vijayalakshmi Patel.K, Manjunatha.L

Abstract: In recent decades economic expansion and urbanization has brought about development of massive amount of multistoried structures which has imparted lack of plain region for development of buildings.This constitutes requirement for construction on slanted ground. Structures built on slopes have a distinct structural configuration with irregularity in mass and rigidity;hence they are liable to damage amid seismic tremor. It is difficult to prevent earthquakes however; the effect can be reduced by safe design and construction work. Core walls are most commonly used in multi storied structures for enclosing elevators, staircase or a lift and they should be placed appropriately to access various storey.The behavior of structures with the location of core wall on a flat ground is distinctive from the sloped ground.In contrast with plain ground,sloped ground has varied stiffness along its elevation which causes change in the focus of mass and stiffness.Improper positioning of lift core in sloped structure canlead to excessive deformations and torsion.Hence in the present study,an attempt is made in studying the consequences on location of core walls on a level ground and sloped ground. A steel building model with G+20 stories is considered and a time history type of examining for building with zone V with medium soil condition is carried out in structural engineered software ETABS.Finally the ideal position of core wallis determined and the seismic reactions results are examined.

Keywords: Buildings on slopes, Shear wall, Torsion, Displacements, etc.…

DOI: https://doi.org/10.15623/ijret.2017.0606014