Dynamic response of multistoreyed brick buildings

Abstract

AbstractThe paper presents the seismic response analysis of a typical multistoreyed brick building. A number of variables representing the physical properties of the structural system, namely, number of storeys from one to four, wall thickness in various storeys from one to one and a half brick thick and damping from 5 per cent to 15 per cent of critical value are considered. A shear beam type multi‐degree‐of‐freedom oscillator is taken to represent these buildings mathematically in which the masses of the floors and walls are assumed as lumped at the floor levels and the floors are assumed as rigid diaphragms. Koyna and El Centro earthquake accelerograms, representing two seismicity levels, are used for computing dynamic response of the buildings. Overturning and torsional effects have been included in the determination of timewise net stresses in the building elements and their seismic capabilities have been examined. From this study the critical sections for providing reinforcing have been identified and the minimum amount of necessary steel has been estimated.