Structural analysis of the CICA Cross-Rope tower

The increasing demand for electricity in Brazil has driven the expansion of power transmission lines (TL). The National Interconnected System (SIN) currently includes 171,640 km of transmission lines, with an expected expansion to 200,015 km by 2028. Lattice steel towers are widely used due to their advantageous behavior. Particularly the Cross-Rope type is the primary choice for high SIL lines, due to compaction of the distance between phases and have become essential where efficiency and environmental impact are critical. This paper describes the methodology adopted to the CICA Cross-Rope tower (CICA-CR) design, which uses polymeric insulators for phases suspension. Unlike the Traditional Cross-Rope (T-CR), where guy wires and cables are at the same level, the CICA-CR tower positions the…