Comparative Study of Structural Behaviour of A, C and D Type Multi Circuit Tower With Maximum Electric Load of 220 KV in Zone III & V1

Rashi Yaksh, Savita Maru

Volume 7, Issue 3 2023

Page: 18-35

Abstract

Transmission structures support the phase conductors and shield wires of a transmission line. The structures commonly used on transmission lines are either lattice type or pole type. Lattice structures are usually composed of steel angle sections. Poles can be wood, steel, or concrete. Each structure type can also be self-supporting or guyed. Structures may have one of the three basic configurations: horizontal, vertical, or delta, depending on the arrangement of the phase conductors. This paper focuses on the design and analysis of transmission tower subjected to the seismic zone three and five. The transmission tower with angle of deviation 0-degree, 30 degree and 60 degrees at the base i.e. type A, C &D towers with multi-circuit is modelled in STAAD pro. The dead load, live load, wind load and seismic loads are applied, further load combination is considered as per IS code 800-2016. The analysis results concluded that the transmission tower with deviation of 0-degree, 30 degree and 60 degrees at the base is economical under zone – III but it becomes highly uneconomical for zone – V. Whereas at the conclusion of this paper it might be suggested to use Type C tower under Zone – III condition.

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