Comparative Study on Deflection of a Multistoried Building with Shear Wall and Core Wall

Abstract

Abstract: To ensure the seismic effectiveness of highrise buildings different systems of lateral restraints are provided e.g., bracings, shear walls, core walls etc. In the present study, deflection of various joints, storeys & also the drifts have been gone through. For this purpose, 3 different models of multi-storeyed buildings were prepared consisting of a G+6 building with shear wall at the centre of edges on exterior walls, G+6 building with a core wall & G+8 building with a core wall were prepared using an integrated building designing software known as ETABS- 2016 (student version). A 3-bay building was modelled using M30 concrete mix and reinforcing steel bars of HYSD 415 for beams, columns, slabs as well as shear walls. After this pier labels were assigned to the shear walls. A variety of load cases like joint loads, dead loads, live loads, wind load in x-direction for terrain category 4, earthquake loads in x & y directions for zone II along with their combinations were assigned. The respective diaphragms were assigned to the three models & analysis was carried out at the end. The table of results was obtained and the deflection analysis was carried out to compare the relative effectiveness of shear walls & core walls at different locations of the multi-storeyed building. The codes taken into consideration during the progress of work were IS 456:2000 for plain and reinforced concrete, IS 875:2015 (Part 1) for wind loads & IS 1893:2002 for earthquake loads. Keywords: Earthquakes, Shear wall, Core wall, Lateral deflection.