Seismic Analysis of Irregular Shear Wall in Reinforced Concrete Structures

Structural Dynamics study has been steadily increasing over the years. The modern trend is towards tall and slender structures which have been designed as irregular due to innovative and architectural aspect. These buildings are affected by environmental factors like wind, earthquake and waterways. Millions of people world-wide annually die due to earthquakes which are responsible for billions of rupees of property damage. This has necessitated the study of Earthquake Engineering. However, study and research in the field of Irregular Buildings under seismic conditions is gaining momentum. The provision of shear wall in building has been found effective and economical. Shear walls are structural members used for providing strength of RCC (Reinforced Cement Concrete) structures against seismic load. Their very high in-plane stiffness and strength makes them ideally best for using in tall structure. They act as vertical cantilevers in the form of separate planer wall. In this study, a building in Zone IV is presented to reduce the effect of earthquake using reinforced concrete shear wall-framed structures in the building. The results were tabulated by performing Response spectrum analysis using SAP2000 in the form of maximum storey displacements, base shear reactions, mode shapes and storey drifts. This paper also gives an idea about the behavior of irregular shear wall i.e. by varying the thickness of Shear wall, on a RCC frame structure under the action of Seismic loading with irregularity in vertical direction. The Shear wall performance is assessed by means of flexural stiffness. The analysis of Shear wall RCC frame structure shows the more accurate results against the seismic loading based on IS code depends on linear performance of material.