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Earthquake Remediation by Use of Rocking Columns–Finite Element Method Simulations

N. Javed 1 and A. Turer 2
1. Department of Architectural Engineering and Design, University of Engineering and Technology, Lahore, Pakistan
2. Department of Civil Engineering, Middle East Technical University, Ankara, Turkiye

Manuscript received September 7, 2022; revised October 13, 2022; accepted November 16, 2022.

Abstract—Rocking columns have been used in ancient civilization in the form of large stone columns supporting massive stones above them in seismically active regions such as Greece and Rome; however, their behavior under earthquakes is not well investigated using modern computer simulation technologies. Rocking columns generate a form of seismic isolation of earthquake forces and unlike conventional seismic isolators, rocking columns do not have a constant period of rocking. The natural frequency and stiffness of a rocking column changes based on the amount of horizontal displacement. Therefore, the system over rocking columns has ever changing natural (fundamental) frequency and does not get into a resonance state with the dominant earthquake frequencies. This paper includes a detailed investigation of rocking columns by using nonlinear and large deformation analysis techniques, which were compared and validated against rocking columns in the lab. The verification process enabled simulation of full-size rocking columns of modern buildings.

Keywords—rocking column, finite element model, earthquake remediation

Cite: N. Javed and A. Turer, "Earthquake Remediation by Use of Rocking Columns–Finite Element Method Simulations," International Journal of Structural and Civil Engineering Research, Vol. 12, No. 1, pp. 6-12, February 2023. doi: 10.18178/ijscer.12.1.6-12

Copyright © 2023 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.