Effect of axial deformation on vibration of tall buildings

Abstract

In this paper, the governing equations of a frame-core wall building are formulated through the continuum approach and the whole structure is idealized as a shear-flexural cantilever. The effect of axial deformation in the frame is considered and incorporated in the formulation of the governing equations. The Bubnov-Galerkin method is used to transform the governing differential equations into a set of algebraic equations. Numerical examples are solved and the results compared with the values obtained from the finite element package 'ETABS'. The study indicates that the effect of axial deformation should be considered especially for tall and/or slender buildings. The proposed method is simple and efficient, provides reasonably accurate results and can be easily implemented on any personal computer.