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Evaluation of seismic demands for adjacent irregular buildings with transverse alignment eccentricity

Research Authors
Shehata E. Abdel Raheem, Ahmed Youssry, Mahmoud H. Soghier, Mohammed Y. M. Fooly,Yasser Gamal
Research Department
Research Date
Research Year
2024
Research Journal
Bulletin of Earthquake Engineering
Research Publisher
Springer
Research Rank
Q1
Research_Pages
1-26
Research Website
https://doi.org/10.1007/s10518-024-02038-0
Research Abstract

Seismic pounding occurs when adjacent buildings lack adequate spacing, exacerbated by Alignment eccentricity and horizontal irregularities of adjacent buildings. The seismic lateral oscillation of adjacent irregular buildings promotes a torsional response under earthquake excitation, moreover, the gap distances recommended in the regulations to prevent collisions are generally insufficient due to the pounding behavior complicated by irregularity of adjacent buildings. Hence, this research aims to evaluate the eccentric pounding effects on seismic response demands for adjacent irregular buildings with transverse alignment eccentricity. The displacement, inter-story drift, story shear force, and torsional rotation responses are investigated and compared for different levels of irregularity. Results findings reveal that increasing alignment eccentricity of adjacent buildings leads to greater lateral displacements in the rebound direction, reduced displacements in the impact direction, and increased torsional rotation of the buildings, consequently, promote eccentric pounding, higher eccentricity leads to greater horizontal floor displacements and twisting motions, which increases the chances of adjacent floors colliding.

Research Rank
International Journal