A STUDY ON THE BEHAVIOUR OF 15 STOREYS 2 X 3 BAYS WITH AND WITHOUT EXTERNAL SHEAR WALL

Deepa S, Venkatesh S.V, I. R. Mithanthaya

Abstract: The word “structural system” is nothing but load tolerating sub system of a structure. A shear wall is a division of the structural system composed of shear panel to withstand earthquake load acting on structures. RC structural -shear walls are used as LLRS in high earthquake zones because they offer large lateral strength, major stiffness and momentous deformation capability. Sensitive character of shear-walls when added to RC frame is important to know which gives us idea about what parameters chosen would be best for reliable designs. In the current study, investigation has been carried out to obtain details of the structural behaviour of 3D model having [2 x 3] bays moment- resisting RC frames with sloped and without sloped shear wall at various locations to tolerate earthquake load. The investigation is carried out in zone- V of “Seismic zones of India as per IS 1893 (part 1):2002, considering loads (dead, live and seismic loads) and their seismic load combinations”. Three [3] forms of structural systems for fifteen [15] storey with and without Sloped external shear wall were considered for Equivalent Linear Static analysis and Dynamic or Response spectrum analysis. Totally 6 models are analyzed. The models chosen for analysis are 1] Basic moment resisting RC frame i.e. Bare frame and 2] Bare frame with external sloped shear wall at middle and ends. The results obtained analytically are meticulously investigated for higher values of axial force, shear force, bending moment and displacement. The results signify better resistance to lateral loads in the existence of External sloped shear wall at the middle mainly when the shear walls are located symmetrically in two mutually perpendicular direction

Keywords: RC Frame, Earthquake Load, Equivalent Static Analysis, Response Spectrum Analysis, Shear Wall

DOI: https://doi.org/10.15623/ijret.2016.0532018