Title: Damping impact with different water level on structural behaviour of elevated water towers

Authors: Taha Yasin Altıok; Muhammet Ensar Yiğit; Cansu Beril Eser; Ali Demir

Addresses: Civil Engineering Department, Manisa Celal Bayar University, Manisa, Türkiye ' Civil Engineering Department, Manisa Celal Bayar University, Manisa, Türkiye ' Civil Engineering Department, Manisa Celal Bayar University, Manisa, Türkiye ' Civil Engineering Department, Manisa Celal Bayar University, Manisa, Türkiye

Abstract: Water towers with tall and delicate geometry are highly susceptible to seismic actions. This study aims to develop a fast, reliable and cost-effective method for examining the seismic behaviour of such structures, by taking a reinforced concrete water tower with known material parameters and dimensions as an example. The impact of water absorption on structural response under dynamic loading at empty, half full and full capacity was investigated. Ideal finite element models of the water tower were constructed using operational modal analysis. Linear time history analyses were conducted using the finite element software. The structure was modelled with the Lagrangian approach, while the fluid was modelled using the Eulerian approach in finite element analysis. The coupled Eulerian Lagrangian technique was employed for the analysis. Results obtained from the analyses indicate that an increase in tank fill level led to enhanced structural damping, resulting in reduced displacement and stress values.

Keywords: elevated water tower; coupled Eulerian Lagrangian technique; operational modal analysis; OMA; damping of water; fluid mechanics.

DOI: 10.1504/IJSTRUCTE.2024.139785

International Journal of Structural Engineering, 2024 Vol.14 No.3, pp.291 - 313

Received: 13 Oct 2023
Accepted: 09 Mar 2024
Published online: 05 Jul 2024 *

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