Comparative Study of Drift Minimization by Different Lateral Load Resisting Systems

Abstract

Increased population densities due to the migration of people from the countryside to the cities, combined with the rising price of developable land provide the urban planners with no better solution than to build higher. In recent decades, dwellers of Dhaka city (Bangladesh) are constructing buildings more than 20 stories to support the current demand. These tall buildings are subjected to drift which is one of the most influencing factors in building structure. The dominant factors which maximize drift of a building structure are dynamic pressure of wind and earthquake force. So drift minimization is the pre-condition for any tall building construction. Drift can be minimized by increasing the size of column, but it reduces floor area of the buildings and it is not effective. So introduction of lateral force resisting system is a crying need for tall buildings to control drift. Drift can be controlled by using shear wall, bracing, outrigger system or introducing other systems. The main objectives of this research are to find out the most successful sidelong power opposing framework which must be savvy. Complete seven models are broke down by utilizing ETABS programming. Examination among established outcomes is done to discover best propping framework and shear divider framework. It is also found out most effective lateral force resisting system by comparing lateral displacement, story drift, seismic base shear, costing of lateral force resisting system and drift index. After observing all results and graphs it is observed that bracing system showed the most acceptable results in lateral force control.