Efficiency of Post-Tensioning in Seismic Retrofitting of Precast Cylindrical Concrete Reservoirs

Autor: Mohammad Ebrahim Karbaschi
Rok vydání: 2013
Předmět:
Zdroj: Arabian Journal for Science and Engineering. 39:1647-1658
ISSN: 2191-4281
1319-8025
DOI: 10.1007/s13369-013-0799-3
Popis: Cylindrical concrete reservoirs are appropriate choice to store liquids such as water, oil, … etc. The use of pre-cast concrete reservoirs considerably increases the speed and precision of construction. In such reservoirs, the assembly of precast wall and roof panels is carried out in construction site. Nevertheless, because of weakness in connections between the wall panels and also between the wall and the foundation, seismic retrofitting may become essential. One innovative method that was applied for seismic retrofitting of numerous precast cylindrical water reservoirs in New Zealand included surrounding the reservoir wall by high tensile post-tensioning cables. In this paper, analytical modeling of wall and roof panels and post-tensioned cables is carried out using the finite element method to investigate the effect of post-tensioning force magnitude, liquid level in reservoir and position of post-tensioning cable on seismic response of reservoir for various height-to-diameter ratios of reservoirs with a constant volume.
Databáze: OpenAIRE
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