A Comparative Study on Various Horizontal Aspect Ratios on Seismic Performance of Regular Shape G+10 Storey RCC Building

Abstract

There are several types of aspect ratios depending mainly on geometry and height of the building. The behavior of a building during earthquakes depends on its overall shape, size, height and geometry. To make a building earthquake resistant, the building should have enough strength, stiffness and inelastic deformation capacity. This can be achieved through the selection of an appropriate building configuration and the careful detailing of structural members. Vertical aspect ratio (H/L or H/B) and horizontal aspect ratio (L_max/L_min) affect the efficiency of structure for resisting lateral loadings. In the present study, six building models having G+10 storey intermediate moment resisting frame building but different horizontal aspect ratios such as 1, 2, 4, 6, 8 and 10 have been considered and their influence on the behavior of the RCC buildings is demonstrated, using the parameters for the design as per the BNBC-1993 for the seismic zone- 2. With the help of software the results obtained on seismic response of buildings have been summarized by graphs and tables. The analysis outputs have been investigated to select the appropriate horizontal aspect ratio for the building subjected to earthquake loadings.