Lattice Tower Design Using Cold-Formed Shapes

by Paolo Faggiano, SAE SpA, Milan, Italy, SAE SpA, Milan, Italy,



Document Type: Proceeding Paper

Part of: Innovations in the Design of Electrical Transmission Structures

Abstract:

The use of cold-formed shapes in lieu of hot-rolled angles may lead to major changes in the design of lattice transmission towers. The design procedure of the new shapes is more creative, more complex but computer based, thus modifying the role of the designers. The tower outline is affected by the peculiar characteristics of cold-formed shapes and by the importance of connection detailing, giving rise to a wide range of structural solutions which allow it to meet specific requirements of each situation. The first part of the paper deals with some aspects of this new design philosophy. In the second part three well known tower configurations, i. e. guyed towers, rigid towers and portals, are taken into consideration. For each configuration a solution adopting cold formed shapes is presented along with the discussion of the specific requirements on which the design is based.

Subject Headings: Power transmission towers | Electric power | Steel structures | Power transmission lines | Lattices | Structural design | Guyed towers

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