SEISMIC PERFORMANCE OF RC FRAME MULTI STOREY BUILDING WITH AND WITHOUT INFILL WALL
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Abstract
Many low-rise and medium rise framed buildings have been constructed in the recent past, without proper attention paid in their design for wind or earthquake loads. This serious shortcoming in structural design and detailing has been exposed by failure that has occurred in the recent earthquakes in various parts of the country. It is the failure of the column during an earthquake which is more severe than the failure of the slabs or beams. The failure of the columns can lead to collapse of the stores one over the other. The columns can fail either in shear or in bending. Shear failure occurs mainly because the column sizes provided are in adequate to resist the seismic loads and inadequate lateral ties. Bending (flexural) failure occur because of steel bars provided vertically in the columns, particularly near the beam-column joints or column-foundation junctions, and may also occur due to poor quality of concrete. In this dissertation work a parametric study is performed on two existing multistoried RC buildings with soft storey, located in seismic zone III. The buildings are used for the purpose of shopping and hostel building. The study is carried out on the buildings with the help of different mathematical model by using different retrofitting techniques for improving seismic performance of the building with soft storey. Analysis and design is carried out on all mathematical 3D models using the software Etabs. Comparison of this models are presented in terms displacement, storey drift , axial force , bending moment, area of steel and quantity and cost for steel and concrete is calculated.
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