• DOI:10.15554/PCIJ.07011980.146.161
• Corpus ID: 37653808

Segmentally Constructed Prestressed Concrete Hyperboloid Cooling Tower

@article{Rizkalla1980SegmentallyCP,
  title={Segmentally Constructed Prestressed Concrete Hyperboloid Cooling Tower},
  author={Sami H. Rizkalla and Paul Zia},
  journal={Pci Journal},
  year={1980},
  volume={25},
  pages={146-161}
}

• S. Rizkalla, P. Zia
• Published 1 July 1980
• Engineering
• Pci Journal

I many large capacity power plant facilities, the natural draft cooling tower in the fonn of a thin shell of revolution is often required to di~sipate a large amount of heat. Construction of such large reinforced concrete natural draft cooling towers is expensive and time-consuming. The cost of the structure is strongly influenced by the construction technique. A possible means of reducing this cost is the technique of segmental construction in which the benefits of both precasting and post-tensioning can be combined together advantageously. This paper presents the concept of segmental construction as applied to the hyperboloid natural draft cooling tower and the method of analysis and design which have been developed in detail by Rizkalla.1 The structural behavior under gravity load, wind pressure and prestressing force is examined. The analysis is based on the finite element method using a truncated conical shell as the basic element. A numerical example is included to illustrate the design method. A conservative cost estimate indicates that there is a potential saving up to 40 percent of the cost of the tower (excluding foundations and columns) by means of segmental construction. Tower Geometry