Analysis and Design of Transmission line Tower, Comparison of Bracing Pattern and Materials

Abstract

A high voltage transmission line structure design is characterized by the special requirements to be met from both electrical and structural point of view. The work undertaken is an attempt to understand and compare the effect of different bracing pattern and materials namely high tensile steel, mild steel and aluminum in transmission line tower structure. Analysis and design of tower is carried out in Stadd Pro. From the analysis results obtained, connection and foundation design is successively carried out. The conclusions are drawn on the basis of analysis, member design and foundation design carried out. Parametric study is carried out with comparison of parameters like deflection, total weight of tower and final cost is derived. Results shows that vertical configuration of tower with quad bracing and material high tensile steel shows lowest weight as compared to simple bracing and material mild steel. Aluminum tower with simple and quad bracing shows excessive deflection.