A COMPARATIVE STUDY ON SEISMIC ANALYSIS OF MULTI-STORED (G+7) RESIDENTIAL BUILDING FOR DIFFERENT ZONES IN BANGLADESH USING ETABS.

Abstract

Modern residential buildings have efficient structural systems, and utilize high strength materials, resulting in reduced building height, and thus, become slenderer and more flexible with low damping. These flexible buildings are very sensitive to wind excitation and earthquake load causing discomfort to the building occupants. Therefore, in order to mitigate such an excitation and to improve the performance of tall buildings against wind loads and earthquake loads, many researches and studies have been performed. Early integration of aerodynamic shaping, wind engineering considerations, and structural system selections play a major role in the architectural design of a residential building in order to mitigate the building response to the wind excitations. A residential building, whose shape is unsuitable, often requires a great deal of steel or a special damping mechanism to reduce its dynamic displacement within the limits of the criterion level for the design wind speed. Understandably, an appropriate choice of building shape and architectural modifications are also extremely important and effective design approaches to reduce wind and earthquake induced motion by altering the flow pattern around the building, hence for this research work four different shaped buildings are generally studied namely Rectangular.To achieve these purposes, firstly, a literature survey, which includes the definition, design parameters, and lateral load considerations of residential buildings, is presented. Then the results are interpreted for different shaped buildings and of different stories thereby concluding as to which shaped residential building is most stable for different conditions. Keywords: Residential Building, Wind load Effect, Earthquake load.