PARAMETRIC STUDY OF RCC, STEEL AND COMPOSITE STRUCTURES UNDER SEISMIC LOADING

In this research work low rise building comparisons are taken into consideration in which same seismic conditions are applied to all the structures and analysis results have been compared to check the suitability of RCC, steel and composite low rise buildings under seismic conditions. Here RCC, steel and composite buildings have been modelled and analysed on the same grid pattern and same external loads are applied on the all three buildings. Sections of RCC building elements are determined using IS 456 and that of steel structure are determined using IS 1893. For composite building, due to unavailability of Indian codes, sections are determined using ANSI codes. For determination of sections first manual calculations have been performed and then they are applied in the software ETABS v.15 along with similar seismic and external loading conditions. These three buildings are compared on the basis of uniform factor of safety between 2 to 3.After the scrutinisation of the results we have concluded that instead of composite and steel structures, RCC structure should be selected for the low rise building construction, because we have observed more deformations in steel structure and more stiffness in composite structure.