Approximate evaluation of lateral acceleration in tall buildings with shear-flexural cantilever beam method

Abstract

In this paper a new method is proposed to estimate the seismic lateral acceleration response in tall buildings. Evaluation of lateral acceleration response in the stories of the structure will allow measures to be taken to reduce the damage on non-structural elements sensitive to lateral acceleration. In this article seismic acceleration response of the structure is obtained by combining mode-acceleration approach with shear-flexural cantilever beams method, and by estimating dynamic components of tall buildings. Quick proposed solutions and equation to calculate the seismic lateral acceleration response, require less information about the structure, which makes analysis easier and faster. The accuracy of the proposed equation is examined by calculating lateral acceleration of 10, 15 story structures during 3 earthquake records using the proposed equation and analyzing the same structures in finite element software, OpenSees. The results show that the proposed equation which does not need simulation and software analysis, offers a good estimation.

Keywords

• tall building
• lateral acceleration
• mode-superposition
• shear-flexural cantilever beam