Analysis of RC Building by Pushover Analysis in Different Seismic Zone

Abstract

Structural engineers are facing the challenge of striving for the most efficient and economical design solution. While ensuring that the final design of a building must be serviceable for its intended function, habitable for its occupants and safe over its design life-time. As the our country is the fastest growing country across the globe And need of shelter with higher land cost in major cities like Dhaka where further horizontal expansion is not much possible due to space shortage, we are left with the solution of vertical expansion. Engineers, designers and builders are trying to use different materials to their best advantage Keeping in view the unique properties of each material structurally robust and aesthetically pleasing building Are being constructed by combining the best properties at individual material & at the same time meeting Specific requirements of large span, building load, soil condition, time, flexibility & economy high rise buildings Are best suited solution. Considering this situation this paper is about the comparison of vulnerability of different seismic zones in Bangladesh. According to BNBC-1993, Bangladesh is divided in three different seismic zones. The behaviors of earthquake forces have been analyzed for both shear wall and without shear wall RCC buildings by ETABS in three different seismic zones. The study shows shear wall buildings performs well than without shear wall buildings in different seismic zones. The base shear, base moment and drifts are higher in zone-3 comparing zone-1 and zone-2. The Pushover analysis in present study is performed on multistoried frame structures by using ETABS 2009. To achieve this objective, four buildings (2, 3, 4 and 5) stories were analyzed. The result are satisfactory for perfectly designed building.