SEISMIC PERFORMANCE OF RC STRUCTURES USING DIFFERENT SHAPED SHEAR WALLS IN DIFFERENT ZONES
Journal Title: International Journal of Civil Engineering and Technology - Year 2019, Vol 10, Issue 3
Abstract
With the rapid growth of urban population and economic activities in several regions around the world, the demand of the building has increased in the past few decades. Scarcity of land makes the horizontal development restricted. Hence most of the designers for the construction use vertical development. One of the major obstacles for vertical development of building is lateral loads due to wind and earthquake. India is basically divided into four seismic Zones –II,III,IV,V. Zone II,III may be considered as little and moderately prone to earthquake whereas IV. V may be considered as severe and extreme severe zones. Hence the structures in zones IV, V has to be made earthquake resistant. The structure can be earthquake resistant by the provision of a shear wall in the structure. The structure will be subjected to larger amount of lateral forces during an earthquake. The structure has to be designed for gravity loads as well as lateral earthquake loads which may not be economical since it results in a larger column sizes and more steel reinforcement. For an economical design, a shear wall has to be introduced in the buildings since shear walls are very effective lateral load resisting elements because of their large stiffness and hence the force demand on structural elements like beams and columns will be reduced. In the present work, a 10 and 15 storied structures are considered and seismic analysis is performed in ETABS using seismic coefficient method. The structures were modeled with different configurations of shear walls such as L shape, core and rectangular shaped shear wall. Parameters such as lateral loads at each storey, lateral storey displacements, storey drifts, Shear force and bending moments were considered. From the study conducted, it was observed that maximum reduction in seismic response was observed when an L shape wall is placed at four corners when compared to rectangular shear wall and core shaped wall.
Authors and Affiliations
Y. RAJESH KUMAR
Keywords
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