Ahmad Baset Popal, Zabihullah Dalil Shinwari, Iqbal Irshad, Abdul Sattar Nawabi and Sayed Javid

Volume 4 Issue 1 | Dec 2022

DOI: 10.31841/KJET.2022.28

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Abstract

Population increment encourages engineers to build high-rise structures. However, in high-rise structures lateral load has a more severe impact on the structure than axial loads and this effect is known as the P-Delta effect. The current study aims to evaluate P-Delta effects in a high-rise structure located in Kabul city and to pinpoint the minimum height required for considering P-Delta effects in structural analysis. The analysis is carried out utilizing the response spectrum method performed by ETABS software for a total of five models with a different number of storey and lateral load-resisting systems. It is observed that with the increase in lateral stiffness, P-Delta effects can be minimized to a certain extent. Lateral displacement, storey drift and stability coefficient are some of the other parameters considered for comparison purposes which are significantly mitigated while a shear wall is provided. Also, an adequate and proper positioning of shear walls has resulted in an appropriate solution for minimizing the P-Delta effects.
Keywords: P-Delta effect, Lateral displacement, Lateral stiffness, Stability coefficient.