Seismic Behavior of Tall Buildings with End Shear Walls and Opening

Document Type : Research Article

Authors

1 Ph.D.Candidate of Structural Engineering, Seismic Geotechnical and High Performance Concrete Research Center, Department of Civil Engineering, Semnan Branch, Islamic Azad University, Semnan, Iran

2 Professor of Structural Engineering, Faculty of Civil Engineering, Semnan University, Iran

3 Assistant Professor of Structural Engineering Seismic Geotechnical and High Performance Concrete Research Center, Department of Civil Engineering, Semnan Branch, Islamic Azad University, Semnan, Iran

Abstract

Today, many strategies have been proposed to improve the behavior of tall buildings under seismic load. Drifts, torsion, and structure period are essential parameters affecting high-rise building behavior. In addition, the stress concentration at the end wing of shear walls is another critical subject in high-rise buildings, which was resolved using end shear walls. The end shear wall connects the end of two shear walls in high-rise buildings without opening. In this study, a new end shear wall connects the end of shear walls in a high-rise building with regular openings (ESWO). Therefore, two 30-story RC buildings with and without end shear walls with opening were modeled by a nonlinear time history analysis under seismic load. The drift was decreased by 49% in a 30-story building with a new end shear wall. Moreover, the residual displacement of 30-story buildings with end shear walls with opening was decreased by 67%.. The time history nonlinear analysis investigation indicated that the end shear walls with opening declined the maximum displacement by 62% in tall buildings by Open Sees software. The reduction of the standard deviation of data increased the confinement in 30-story drifts in the X and Y directions by end shear walls with opening. Based on the results, the performance of the end shear walls with the opening was appropriate in the seismic behavior of high-rise buildings.

Keywords

Main Subjects

References

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Journal of Seismology and Earthquake Engineering
Volume 23, Issue 2
May 2021
Pages 55-70

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